diff --git a/integration-tests/api/__tests__/store/cart.js b/integration-tests/api/__tests__/store/cart.js
index b5232bb196..ab9fb24d3b 100644
--- a/integration-tests/api/__tests__/store/cart.js
+++ b/integration-tests/api/__tests__/store/cart.js
@@ -150,7 +150,7 @@ describe("/store/carts", () => {
       const cart = getRes.data.cart
       expect(cart.context).toEqual({
         ip: "::ffff:127.0.0.1",
-        user_agent: "axios/0.21.1",
+        user_agent: expect.stringContaining("axios/0.21."),
         test_id: "test",
       })
     })
diff --git a/packages/medusa-js/src/request.ts b/packages/medusa-js/src/request.ts
index 302ef247ab..0faf43b7a0 100644
--- a/packages/medusa-js/src/request.ts
+++ b/packages/medusa-js/src/request.ts
@@ -68,7 +68,7 @@ class Client {
   }
 
   // Stolen from https://github.com/stripe/stripe-node/blob/fd0a597064289b8c82f374f4747d634050739043/lib/utils.js#L282
-  normalizeHeaders(obj: object): object {
+  normalizeHeaders(obj: object): Record<string, any> {
     if (!(obj && typeof obj === "object")) {
       return obj
     }
@@ -109,9 +109,9 @@ class Client {
     userHeaders: RequestOptions,
     method: RequestMethod,
     path: string,
-    customHeaders: object = {}
+    customHeaders: Record<string, any> = {}
   ): AxiosRequestHeaders {
-    let defaultHeaders: object = {
+    let defaultHeaders: Record<string, any> = {
       Accept: "application/json",
       "Content-Type": "application/json",
     }
@@ -183,9 +183,9 @@ class Client {
   async request(
     method: RequestMethod,
     path: string,
-    payload: object = {},
+    payload: Record<string, any> = {},
     options: RequestOptions = {},
-    customHeaders: object = {}
+    customHeaders: Record<string, any> = {}
   ): Promise<any> {
     const reqOpts = {
       method,
diff --git a/packages/medusa-js/src/resources/addresses.ts b/packages/medusa-js/src/resources/addresses.ts
index ab88a82a20..a04a0c5845 100644
--- a/packages/medusa-js/src/resources/addresses.ts
+++ b/packages/medusa-js/src/resources/addresses.ts
@@ -10,37 +10,40 @@ class AddressesResource extends BaseResource {
   /**
    * Adds an address to a customers saved addresses
    * @param {StorePostCustomersCustomerAddressesReq} payload contains information to create an address
-   * @return {ResponsePromise<StoreCustomerResponse>}
+   * @param customHeaders
+   * @return {ResponsePromise<StoreCustomersRes>}
    */
   addAddress(
-    payload: StorePostCustomersCustomerAddressesReq
-  ): ResponsePromise<StoreCustomersRes> {
+    payload: StorePostCustomersCustomerAddressesReq,
+    customHeaders: Record<string, any> = {}): ResponsePromise<StoreCustomersRes> {
     const path = `/store/customers/me/addresses`
-    return this.client.request("POST", path, payload)
+    return this.client.request("POST", path, payload, {}, customHeaders)
   }
 
   /**
    * Deletes an address of a customer
    * @param {string} address_id id of the address to delete
-   * @return {ResponsePromise<StoreCustomersResponse>}
+   * @param customHeaders
+   * @return {ResponsePromise<StoreCustomersRes>}
    */
-  deleteAddress(address_id: string): ResponsePromise<StoreCustomersRes> {
+  deleteAddress(address_id: string, customHeaders: Record<string, any> = {}): ResponsePromise<StoreCustomersRes> {
     const path = `/store/customers/me/addresses/${address_id}`
-    return this.client.request("DELETE", path)
+    return this.client.request("DELETE", path, {}, {}, customHeaders)
   }
 
   /**
    * Update an address of a customer
    * @param {string} address_id id of customer
    * @param {StorePostCustomersCustomerAddressesAddressReq} payload address update
-   * @return {StoreCustomersResponse}
+   * @param customHeaders
+   * @return {StoreCustomersRes}
    */
   updateAddress(
     address_id: string,
-    payload: StorePostCustomersCustomerAddressesAddressReq
-  ): ResponsePromise<StoreCustomersRes> {
+    payload: StorePostCustomersCustomerAddressesAddressReq,
+    customHeaders: Record<string, any> = {}): ResponsePromise<StoreCustomersRes> {
     const path = `/store/customers/me/addresses/${address_id}`
-    return this.client.request("POST", path, payload)
+    return this.client.request("POST", path, payload, {}, customHeaders)
   }
 }
 
diff --git a/packages/medusa-js/src/resources/admin/auth.ts b/packages/medusa-js/src/resources/admin/auth.ts
index ae45b86e7b..0873979b29 100644
--- a/packages/medusa-js/src/resources/admin/auth.ts
+++ b/packages/medusa-js/src/resources/admin/auth.ts
@@ -6,30 +6,33 @@ class AdminAuthResource extends BaseResource {
   /**
    * @description Retrieves an authenticated session
    * Usually used to check if authenticated session is alive.
+   * @param customHeaders
    * @return {ResponsePromise<AdminAuthRes>}
    */
-  getSession(): ResponsePromise<AdminAuthRes> {
+  getSession(customHeaders: Record<string, any> = {}): ResponsePromise<AdminAuthRes> {
     const path = `/admin/auth`
-    return this.client.request("GET", path)
+    return this.client.request("GET", path, {}, {}, customHeaders)
   }
 
   /**
    * @description destroys an authenticated session
+   * @param customHeaders
    * @return {ResponsePromise<void>}
    */
-  deleteSession(): ResponsePromise<void> {
+  deleteSession(customHeaders: Record<string, any> = {}): ResponsePromise<void> {
     const path = `/admin/auth`
-    return this.client.request("DELETE", path)
+    return this.client.request("DELETE", path, {}, {}, customHeaders)
   }
 
   /**
    * @description Creates an authenticated session
    * @param {AdminPostAuthReq} payload
+   * @param customHeaders
    * @return {ResponsePromise<AdminAuthRes>}
    */
-  createSession(payload: AdminPostAuthReq): ResponsePromise<AdminAuthRes> {
+  createSession(payload: AdminPostAuthReq, customHeaders: Record<string, any> = {}): ResponsePromise<AdminAuthRes> {
     const path = `/admin/auth`
-    return this.client.request("POST", path, payload)
+    return this.client.request("POST", path, payload, {}, customHeaders)
   }
 }
 
diff --git a/packages/medusa-js/src/resources/admin/collections.ts b/packages/medusa-js/src/resources/admin/collections.ts
index 8439d07d85..4ce8225b01 100644
--- a/packages/medusa-js/src/resources/admin/collections.ts
+++ b/packages/medusa-js/src/resources/admin/collections.ts
@@ -14,56 +14,64 @@ class AdminCollectionsResource extends BaseResource {
   /**
    * @description Creates a collection.
    * @param payload
+   * @param customHeaders
    * @returns Created collection.
    */
   create(
-    payload: AdminPostCollectionsReq
+    payload: AdminPostCollectionsReq,
+    customHeaders: Record<string, any> = {}
   ): ResponsePromise<AdminCollectionsRes> {
     const path = `/admin/collections`
-    return this.client.request("POST", path, payload)
+    return this.client.request("POST", path, payload, {}, customHeaders)
   }
 
   /**
    * @description Updates a collection
    * @param id id of the collection to update.
    * @param payload update to apply to collection.
+   * @param customHeaders
    * @returns the updated collection.
    */
   update(
     id: string,
-    payload: AdminPostCollectionsCollectionReq
+    payload: AdminPostCollectionsCollectionReq,
+    customHeaders: Record<string, any> = {}
   ): ResponsePromise<AdminCollectionsRes> {
     const path = `/admin/collections/${id}`
-    return this.client.request("POST", path, payload)
+    return this.client.request("POST", path, payload, {}, customHeaders)
   }
 
   /**
    * @description deletes a collection
    * @param id id of collection to delete.
+   * @param customHeaders
    * @returns Deleted response
    */
-  delete(id: string): ResponsePromise<AdminCollectionsDeleteRes> {
+  delete(id: string, customHeaders: Record<string, any> = {}): ResponsePromise<AdminCollectionsDeleteRes> {
     const path = `/admin/collections/${id}`
-    return this.client.request("DELETE", path)
+    return this.client.request("DELETE", path, {}, {}, customHeaders)
   }
 
   /**
    * @description get a collection
    * @param id id of the collection to retrieve.
+   * @param customHeaders
    * @returns the collection with the given id
    */
-  retrieve(id: string): ResponsePromise<AdminCollectionsRes> {
+  retrieve(id: string, customHeaders: Record<string, any> = {}): ResponsePromise<AdminCollectionsRes> {
     const path = `/admin/collections/${id}`
-    return this.client.request("GET", path)
+    return this.client.request("GET", path, {}, {}, customHeaders)
   }
 
   /**
    * @description Lists collections matching a query
    * @param query Query for searching collections
+   * @param customHeaders
    * @returns a list of collections matching the query.
    */
   list(
-    query?: AdminGetCollectionsParams
+    query?: AdminGetCollectionsParams,
+    customHeaders: Record<string, any> = {}
   ): ResponsePromise<AdminCollectionsListRes> {
     let path = `/admin/collections`
 
@@ -72,7 +80,7 @@ class AdminCollectionsResource extends BaseResource {
       path = `/admin/collections?${queryString}`
     }
 
-    return this.client.request("GET", path)
+    return this.client.request("GET", path, {}, {}, customHeaders)
   }
 }
 
diff --git a/packages/medusa-js/src/resources/admin/customers.ts b/packages/medusa-js/src/resources/admin/customers.ts
index b5e63ee732..6607d3f373 100644
--- a/packages/medusa-js/src/resources/admin/customers.ts
+++ b/packages/medusa-js/src/resources/admin/customers.ts
@@ -13,40 +13,46 @@ class AdminCustomersResource extends BaseResource {
   /**
    * Creates a customer
    * @param payload information of customer
+   * @param customHeaders
    */
-  create(payload: AdminPostCustomersReq): ResponsePromise<AdminCustomersRes> {
+  create(payload: AdminPostCustomersReq, customHeaders: Record<string, any> = {}): ResponsePromise<AdminCustomersRes> {
     const path = `/admin/customers`
-    return this.client.request("POST", path, payload)
+    return this.client.request("POST", path, payload, {}, customHeaders)
   }
 
   /**
    * Updates a customer
    * @param id customer id
    * @param payload data to update customer with
+   * @param customHeaders
    */
   update(
     id: string,
-    payload: AdminPostCustomersCustomerReq
+    payload: AdminPostCustomersCustomerReq,
+    customHeaders: Record<string, any> = {}
   ): ResponsePromise<AdminCustomersRes> {
     const path = `/admin/customers/${id}`
-    return this.client.request("POST", path, payload)
+    return this.client.request("POST", path, payload, {}, customHeaders)
   }
 
   /**
    * Retrieves a customer
    * @param id customer id
+   * @param customHeaders
    */
-  retrieve(id: string): ResponsePromise<AdminCustomersRes> {
+  retrieve(id: string, customHeaders: Record<string, any> = {}): ResponsePromise<AdminCustomersRes> {
     const path = `/admin/customers/${id}`
-    return this.client.request("GET", path)
+    return this.client.request("GET", path, {}, {}, customHeaders)
   }
 
   /**
    * Lists customers
    * @param query optional
+   * @param customHeaders
    */
   list(
-    query?: AdminGetCustomersParams
+    query?: AdminGetCustomersParams,
+    customHeaders: Record<string, any> = {}
   ): ResponsePromise<AdminCustomersListRes> {
     let path = `/admin/customers`
 
@@ -55,7 +61,7 @@ class AdminCustomersResource extends BaseResource {
       path = `/admin/customers?${queryString}`
     }
 
-    return this.client.request("GET", path)
+    return this.client.request("GET", path, {}, {}, customHeaders)
   }
 }
 
diff --git a/packages/medusa-js/src/resources/admin/discounts.ts b/packages/medusa-js/src/resources/admin/discounts.ts
index 25c75b385f..bbcfd66e90 100644
--- a/packages/medusa-js/src/resources/admin/discounts.ts
+++ b/packages/medusa-js/src/resources/admin/discounts.ts
@@ -15,9 +15,9 @@ class AdminDiscountsResource extends BaseResource {
   /**
    * @description Adds region to discount
    */
-  addRegion(id: string, regionId: string): ResponsePromise<AdminDiscountsRes> {
+  addRegion(id: string, regionId: string, customHeaders: Record<string, any> = {}): ResponsePromise<AdminDiscountsRes> {
     const path = `/admin/discounts/${id}/regions/${regionId}`
-    return this.client.request("POST", path, {})
+    return this.client.request("POST", path, {}, {}, customHeaders)
   }
 
   /**
@@ -25,8 +25,8 @@ class AdminDiscountsResource extends BaseResource {
    */
   addValidProduct(
     id: string,
-    productId: string
-  ): ResponsePromise<AdminDiscountsRes> {
+    productId: string,
+    customHeaders: Record<string, any> = {}): ResponsePromise<AdminDiscountsRes> {
     const path = `/admin/discounts/${id}/products/${productId}`
     return this.client.request("POST", path, {})
   }
@@ -34,9 +34,9 @@ class AdminDiscountsResource extends BaseResource {
   /**
    * @description Creates discounts
    */
-  create(payload: AdminPostDiscountsReq): ResponsePromise<AdminDiscountsRes> {
+  create(payload: AdminPostDiscountsReq, customHeaders: Record<string, any> = {}): ResponsePromise<AdminDiscountsRes> {
     const path = `/admin/discounts`
-    return this.client.request("POST", path, payload)
+    return this.client.request("POST", path, payload, {}, customHeaders)
   }
 
   /**
@@ -44,10 +44,10 @@ class AdminDiscountsResource extends BaseResource {
    */
   update(
     id: string,
-    payload: AdminPostDiscountsDiscountReq
-  ): ResponsePromise<AdminDiscountsRes> {
+    payload: AdminPostDiscountsDiscountReq,
+    customHeaders: Record<string, any> = {}): ResponsePromise<AdminDiscountsRes> {
     const path = `/admin/discounts/${id}`
-    return this.client.request("POST", path, payload)
+    return this.client.request("POST", path, payload, {}, customHeaders)
   }
 
   /**
@@ -55,18 +55,18 @@ class AdminDiscountsResource extends BaseResource {
    */
   createDynamicCode(
     id: string,
-    payload: AdminPostDiscountsDiscountDynamicCodesReq
-  ): ResponsePromise<AdminDiscountsRes> {
+    payload: AdminPostDiscountsDiscountDynamicCodesReq,
+    customHeaders: Record<string, any> = {}): ResponsePromise<AdminDiscountsRes> {
     const path = `/admin/discounts/${id}/dynamic-codes`
-    return this.client.request("POST", path, payload)
+    return this.client.request("POST", path, payload, {}, customHeaders)
   }
 
   /**
    * @description Deletes a discount
    */
-  delete(id: string): ResponsePromise<AdminDiscountsDeleteRes> {
+  delete(id: string, customHeaders: Record<string, any> = {}): ResponsePromise<AdminDiscountsDeleteRes> {
     const path = `/admin/discounts/${id}`
-    return this.client.request("DELETE", path)
+    return this.client.request("DELETE", path, {}, {}, customHeaders)
   }
 
   /**
@@ -74,34 +74,34 @@ class AdminDiscountsResource extends BaseResource {
    */
   deleteDynamicCode(
     id: string,
-    code: string
-  ): ResponsePromise<AdminDiscountsRes> {
+    code: string,
+    customHeaders: Record<string, any> = {}): ResponsePromise<AdminDiscountsRes> {
     const path = `/admin/discounts/${id}/dynamic-codes/${code}`
-    return this.client.request("DELETE", path)
+    return this.client.request("DELETE", path, {}, {}, customHeaders)
   }
 
   /**
    * @description Retrieves a discount
    */
-  retrieve(id: string): ResponsePromise<AdminDiscountsRes> {
+  retrieve(id: string, customHeaders: Record<string, any> = {}): ResponsePromise<AdminDiscountsRes> {
     const path = `/admin/discounts/${id}`
-    return this.client.request("GET", path)
+    return this.client.request("GET", path, {}, {}, customHeaders)
   }
 
   /**
    * @description Retrieves a discount by code
    */
-  retrieveByCode(code: string): ResponsePromise<AdminDiscountsRes> {
+  retrieveByCode(code: string, customHeaders: Record<string, any> = {}): ResponsePromise<AdminDiscountsRes> {
     const path = `/admin/discounts/code/${code}`
-    return this.client.request("GET", path)
+    return this.client.request("GET", path, {}, {}, customHeaders)
   }
 
   /**
    * @description Lists discounts
    */
   list(
-    query?: AdminGetDiscountsParams
-  ): ResponsePromise<AdminDiscountsListRes> {
+    query?: AdminGetDiscountsParams,
+    customHeaders: Record<string, any> = {}): ResponsePromise<AdminDiscountsListRes> {
     let path = `/admin/discounts`
 
     if (query) {
@@ -109,7 +109,7 @@ class AdminDiscountsResource extends BaseResource {
       path = `/admin/discounts?${queryString}`
     }
 
-    return this.client.request("GET", path)
+    return this.client.request("GET", path, {}, {}, customHeaders)
   }
 
   /**
@@ -117,10 +117,10 @@ class AdminDiscountsResource extends BaseResource {
    */
   removeRegion(
     id: string,
-    regionId: string
-  ): ResponsePromise<AdminDiscountsRes> {
+    regionId: string,
+    customHeaders: Record<string, any> = {}): ResponsePromise<AdminDiscountsRes> {
     const path = `/admin/discounts/${id}/regions/${regionId}`
-    return this.client.request("DELETE", path)
+    return this.client.request("DELETE", path, {}, {}, customHeaders)
   }
 
   /**
@@ -128,10 +128,10 @@ class AdminDiscountsResource extends BaseResource {
    */
   removeValidProduct(
     id: string,
-    productId: string
-  ): ResponsePromise<AdminDiscountsRes> {
+    productId: string,
+    customHeaders: Record<string, any> = {}): ResponsePromise<AdminDiscountsRes> {
     const path = `/admin/discounts/${id}/products/${productId}`
-    return this.client.request("DELETE", path)
+    return this.client.request("DELETE", path, {}, {}, customHeaders)
   }
 }
 
diff --git a/packages/medusa-js/src/resources/admin/draft-orders.ts b/packages/medusa-js/src/resources/admin/draft-orders.ts
index 6c37558c03..f36b078829 100644
--- a/packages/medusa-js/src/resources/admin/draft-orders.ts
+++ b/packages/medusa-js/src/resources/admin/draft-orders.ts
@@ -17,10 +17,10 @@ class AdminDraftOrdersResource extends BaseResource {
    * @description Creates a draft order
    */
   create(
-    payload: AdminPostDraftOrdersDraftOrderReq
-  ): ResponsePromise<AdminDraftOrdersRes> {
+    payload: AdminPostDraftOrdersDraftOrderReq,
+    customHeaders: Record<string, any> = {}): ResponsePromise<AdminDraftOrdersRes> {
     const path = `/admin/draft-orders`
-    return this.client.request("POST", path, payload)
+    return this.client.request("POST", path, payload, {}, customHeaders)
   }
 
   /**
@@ -28,18 +28,18 @@ class AdminDraftOrdersResource extends BaseResource {
    */
   addLineItem(
     id: string,
-    payload: AdminPostDraftOrdersDraftOrderLineItemsReq
-  ): ResponsePromise<AdminDraftOrdersRes> {
+    payload: AdminPostDraftOrdersDraftOrderLineItemsReq,
+    customHeaders: Record<string, any> = {}): ResponsePromise<AdminDraftOrdersRes> {
     const path = `/admin/draft-orders/${id}/line-items`
-    return this.client.request("POST", path, payload)
+    return this.client.request("POST", path, payload, {}, customHeaders)
   }
 
   /**
    * @description Delete draft order
    */
-  delete(id: string): ResponsePromise<AdminDraftOrdersDeleteRes> {
+  delete(id: string, customHeaders: Record<string, any> = {}): ResponsePromise<AdminDraftOrdersDeleteRes> {
     const path = `/admin/draft-orders/${id}`
-    return this.client.request("DELETE", path)
+    return this.client.request("DELETE", path, {}, {}, customHeaders)
   }
 
   /**
@@ -47,26 +47,26 @@ class AdminDraftOrdersResource extends BaseResource {
    */
   removeLineItem(
     id: string,
-    itemId: string
-  ): ResponsePromise<AdminDraftOrdersRes> {
+    itemId: string,
+    customHeaders: Record<string, any> = {}): ResponsePromise<AdminDraftOrdersRes> {
     const path = `/admin/draft-orders/${id}/line-items/${itemId}`
-    return this.client.request("DELETE", path)
+    return this.client.request("DELETE", path, {}, {}, customHeaders)
   }
 
   /**
    * @description Retrieves a draft order
    */
-  retrieve(id: string): ResponsePromise<AdminDraftOrdersRes> {
+  retrieve(id: string, customHeaders: Record<string, any> = {}): ResponsePromise<AdminDraftOrdersRes> {
     const path = `/admin/draft-orders/${id}`
-    return this.client.request("GET", path)
+    return this.client.request("GET", path, {}, {}, customHeaders)
   }
 
   /**
    * @description Lists draft orders
    */
   list(
-    query?: AdminGetDraftOrdersParams
-  ): ResponsePromise<AdminDraftOrdersListRes> {
+    query?: AdminGetDraftOrdersParams,
+    customHeaders: Record<string, any> = {}): ResponsePromise<AdminDraftOrdersListRes> {
     let path = `/admin/draft-orders`
 
     if (query) {
@@ -74,14 +74,15 @@ class AdminDraftOrdersResource extends BaseResource {
       path = `/admin/draft-orders?${queryString}`
     }
 
-    return this.client.request("GET", path)
+    return this.client.request("GET", path, {}, {}, customHeaders)
   }
 
   /**
    * @description Mark a draft order as paid
    */
   markPaid(
-    id: string
+    id: string,
+    customHeaders: Record<string, any> = {}
   ): ResponsePromise<AdminPostDraftOrdersDraftOrderRegisterPaymentRes> {
     const path = `/admin/draft-orders/${id}/pay`
     return this.client.request("POST", path, {})
@@ -92,10 +93,10 @@ class AdminDraftOrdersResource extends BaseResource {
    */
   update(
     id: string,
-    payload: AdminPostDraftOrdersDraftOrderReq
-  ): ResponsePromise<AdminDraftOrdersRes> {
+    payload: AdminPostDraftOrdersDraftOrderReq,
+    customHeaders: Record<string, any> = {}): ResponsePromise<AdminDraftOrdersRes> {
     const path = `/admin/draft-orders/${id}`
-    return this.client.request("POST", path, payload)
+    return this.client.request("POST", path, payload, {}, customHeaders)
   }
 
   /**
@@ -104,10 +105,10 @@ class AdminDraftOrdersResource extends BaseResource {
   updateLineItem(
     id: string,
     itemId: string,
-    payload: AdminPostDraftOrdersDraftOrderLineItemsItemReq
-  ): ResponsePromise<AdminDraftOrdersRes> {
+    payload: AdminPostDraftOrdersDraftOrderLineItemsItemReq,
+    customHeaders: Record<string, any> = {}): ResponsePromise<AdminDraftOrdersRes> {
     const path = `/admin/draft-orders/${id}/line-items/${itemId}`
-    return this.client.request("POST", path, payload)
+    return this.client.request("POST", path, payload, {}, customHeaders)
   }
 }
 
diff --git a/packages/medusa-js/src/resources/admin/gift-cards.ts b/packages/medusa-js/src/resources/admin/gift-cards.ts
index a0db39b939..42a0b13450 100644
--- a/packages/medusa-js/src/resources/admin/gift-cards.ts
+++ b/packages/medusa-js/src/resources/admin/gift-cards.ts
@@ -14,9 +14,9 @@ class AdminGiftCardsResource extends BaseResource {
   /**
    * @description Creates a gift card
    */
-  create(payload: AdminPostGiftCardsReq): ResponsePromise<AdminGiftCardsRes> {
+  create(payload: AdminPostGiftCardsReq, customHeaders: Record<string, any> = {}): ResponsePromise<AdminGiftCardsRes> {
     const path = `/admin/gift-cards`
-    return this.client.request("POST", path, payload)
+    return this.client.request("POST", path, payload, {}, customHeaders)
   }
 
   /**
@@ -24,34 +24,34 @@ class AdminGiftCardsResource extends BaseResource {
    */
   update(
     id: string,
-    payload: AdminPostGiftCardsGiftCardReq
-  ): ResponsePromise<AdminGiftCardsRes> {
+    payload: AdminPostGiftCardsGiftCardReq,
+    customHeaders: Record<string, any> = {}): ResponsePromise<AdminGiftCardsRes> {
     const path = `/admin/gift-cards/${id}`
-    return this.client.request("POST", path, payload)
+    return this.client.request("POST", path, payload, {}, customHeaders)
   }
 
   /**
    * @description Deletes a gift card
    */
-  delete(id: string): ResponsePromise<AdminGiftCardsDeleteRes> {
+  delete(id: string, customHeaders: Record<string, any> = {}): ResponsePromise<AdminGiftCardsDeleteRes> {
     const path = `/admin/gift-cards/${id}`
-    return this.client.request("DELETE", path)
+    return this.client.request("DELETE", path, {}, {}, customHeaders)
   }
 
   /**
    * @description Deletes a gift card
    */
-  retrieve(id: string): ResponsePromise<AdminGiftCardsRes> {
+  retrieve(id: string, customHeaders: Record<string, any> = {}): ResponsePromise<AdminGiftCardsRes> {
     const path = `/admin/gift-cards/${id}`
-    return this.client.request("GET", path)
+    return this.client.request("GET", path, {}, {}, customHeaders)
   }
 
   /**
    * @description Lists gift cards
    */
   list(
-    query?: AdminGetGiftCardsParams
-  ): ResponsePromise<AdminGiftCardsListRes> {
+    query?: AdminGetGiftCardsParams,
+    customHeaders: Record<string, any> = {}): ResponsePromise<AdminGiftCardsListRes> {
     let path = `/admin/gift-cards/`
 
     if (query) {
@@ -59,7 +59,7 @@ class AdminGiftCardsResource extends BaseResource {
       path = `/admin/gift-cards?${queryString}`
     }
 
-    return this.client.request("GET", path)
+    return this.client.request("GET", path, {}, {}, customHeaders)
   }
 }
 
diff --git a/packages/medusa-js/src/resources/admin/invites.ts b/packages/medusa-js/src/resources/admin/invites.ts
index ceee73191a..834190dbcd 100644
--- a/packages/medusa-js/src/resources/admin/invites.ts
+++ b/packages/medusa-js/src/resources/admin/invites.ts
@@ -7,29 +7,29 @@ import { AdminPostInvitesPayload, ResponsePromise } from "../.."
 import BaseResource from "../base"
 
 class AdminInvitesResource extends BaseResource {
-  accept(payload: AdminPostInvitesInviteAcceptReq): ResponsePromise {
+  accept(payload: AdminPostInvitesInviteAcceptReq, customHeaders: Record<string, any> = {}): ResponsePromise {
     const path = `/admin/invites/accept`
-    return this.client.request("POST", path, payload)
+    return this.client.request("POST", path, payload, {}, customHeaders)
   }
 
-  create(payload: AdminPostInvitesPayload): ResponsePromise {
+  create(payload: AdminPostInvitesPayload, customHeaders: Record<string, any> = {}): ResponsePromise {
     const path = `/admin/invites`
-    return this.client.request("POST", path, payload)
+    return this.client.request("POST", path, payload, {}, customHeaders)
   }
 
-  delete(id: string): ResponsePromise<AdminInviteDeleteRes> {
+  delete(id: string, customHeaders: Record<string, any> = {}): ResponsePromise<AdminInviteDeleteRes> {
     const path = `/admin/invites/${id}`
-    return this.client.request("DELETE", path)
+    return this.client.request("DELETE", path, {}, {}, customHeaders)
   }
 
-  list(): ResponsePromise<AdminListInvitesRes> {
+  list(customHeaders: Record<string, any> = {}): ResponsePromise<AdminListInvitesRes> {
     const path = `/admin/invites`
-    return this.client.request("GET", path)
+    return this.client.request("GET", path, {}, {}, customHeaders)
   }
 
-  resend(id: string): ResponsePromise {
+  resend(id: string, customHeaders: Record<string, any> = {}): ResponsePromise {
     const path = `/admin/invites/${id}`
-    return this.client.request("POST", path, {})
+    return this.client.request("POST", path, {}, {}, customHeaders)
   }
 }
 
diff --git a/packages/medusa-js/src/resources/admin/notes.ts b/packages/medusa-js/src/resources/admin/notes.ts
index b1c5f4243a..d991ecda44 100644
--- a/packages/medusa-js/src/resources/admin/notes.ts
+++ b/packages/medusa-js/src/resources/admin/notes.ts
@@ -11,30 +11,30 @@ import { ResponsePromise } from "../../typings"
 import BaseResource from "../base"
 
 class AdminNotesResource extends BaseResource {
-  create(payload: AdminPostNotesReq): ResponsePromise<AdminNotesRes> {
+  create(payload: AdminPostNotesReq, customHeaders: Record<string, any> = {}): ResponsePromise<AdminNotesRes> {
     const path = `/admin/notes`
-    return this.client.request("POST", path, payload)
+    return this.client.request("POST", path, payload, {}, customHeaders)
   }
 
   update(
     id: string,
-    payload: AdminPostNotesNoteReq
-  ): ResponsePromise<AdminNotesRes> {
+    payload: AdminPostNotesNoteReq,
+    customHeaders: Record<string, any> = {}): ResponsePromise<AdminNotesRes> {
     const path = `/admin/notes/${id}`
-    return this.client.request("POST", path, payload)
+    return this.client.request("POST", path, payload, {}, customHeaders)
   }
 
-  delete(id: string): ResponsePromise<AdminNotesDeleteRes> {
+  delete(id: string, customHeaders: Record<string, any> = {}): ResponsePromise<AdminNotesDeleteRes> {
     const path = `/admin/notes/${id}`
-    return this.client.request("DELETE", path)
+    return this.client.request("DELETE", path, {}, {}, customHeaders)
   }
 
-  retrieve(id: string): ResponsePromise<AdminNotesRes> {
+  retrieve(id: string, customHeaders: Record<string, any> = {}): ResponsePromise<AdminNotesRes> {
     const path = `/admin/notes/${id}`
-    return this.client.request("GET", path)
+    return this.client.request("GET", path, {}, {}, customHeaders)
   }
 
-  list(query?: AdminGetNotesParams): ResponsePromise<AdminNotesListRes> {
+  list(query?: AdminGetNotesParams, customHeaders: Record<string, any> = {}): ResponsePromise<AdminNotesListRes> {
     let path = `/admin/notes/`
 
     if (query) {
@@ -42,7 +42,7 @@ class AdminNotesResource extends BaseResource {
       path = `/admin/notes?${queryString}`
     }
 
-    return this.client.request("GET", path)
+    return this.client.request("GET", path, {}, {}, customHeaders)
   }
 }
 
diff --git a/packages/medusa-js/src/resources/admin/notifications.ts b/packages/medusa-js/src/resources/admin/notifications.ts
index 481d69e411..2b2b6d56a6 100644
--- a/packages/medusa-js/src/resources/admin/notifications.ts
+++ b/packages/medusa-js/src/resources/admin/notifications.ts
@@ -10,8 +10,8 @@ import BaseResource from "../base"
 
 class AdminNotificationsResource extends BaseResource {
   list(
-    query?: AdminGetNotificationsParams
-  ): ResponsePromise<AdminNotificationsListRes> {
+    query?: AdminGetNotificationsParams,
+    customHeaders: Record<string, any> = {}): ResponsePromise<AdminNotificationsListRes> {
     let path = `/admin/notifications`
 
     if (query) {
@@ -19,15 +19,15 @@ class AdminNotificationsResource extends BaseResource {
       path = `/admin/notifications?${queryString}`
     }
 
-    return this.client.request("GET", path)
+    return this.client.request("GET", path, {}, {}, customHeaders)
   }
 
   resend(
     id: string,
-    payload: AdminPostNotificationsNotificationResendReq
-  ): ResponsePromise<AdminNotificationsRes> {
+    payload: AdminPostNotificationsNotificationResendReq,
+    customHeaders: Record<string, any> = {}): ResponsePromise<AdminNotificationsRes> {
     const path = `/admin/notifications/${id}/resend`
-    return this.client.request("POST", path, payload)
+    return this.client.request("POST", path, payload, {}, customHeaders)
   }
 }
 
diff --git a/packages/medusa-js/src/resources/admin/orders.ts b/packages/medusa-js/src/resources/admin/orders.ts
index 0df0cc86ba..660cf455ee 100644
--- a/packages/medusa-js/src/resources/admin/orders.ts
+++ b/packages/medusa-js/src/resources/admin/orders.ts
@@ -22,25 +22,25 @@ import { ResponsePromise } from "../../typings"
 import BaseResource from "../base"
 
 class AdminOrdersResource extends BaseResource {
-  create(payload: AdminPostOrdersReq): ResponsePromise<AdminOrdersRes> {
+  create(payload: AdminPostOrdersReq, customHeaders: Record<string, any> = {}): ResponsePromise<AdminOrdersRes> {
     const path = `/admin/orders`
-    return this.client.request("POST", path, payload)
+    return this.client.request("POST", path, payload, {}, customHeaders)
   }
 
   update(
     id: string,
-    payload: AdminPostOrdersOrderReq
-  ): ResponsePromise<AdminOrdersRes> {
+    payload: AdminPostOrdersOrderReq,
+    customHeaders: Record<string, any> = {}): ResponsePromise<AdminOrdersRes> {
     const path = `/admin/orders/${id}`
-    return this.client.request("POST", path, payload)
+    return this.client.request("POST", path, payload, {}, customHeaders)
   }
 
-  retrieve(id: string): ResponsePromise<AdminOrdersRes> {
+  retrieve(id: string, customHeaders: Record<string, any> = {}): ResponsePromise<AdminOrdersRes> {
     const path = `/admin/orders/${id}`
-    return this.client.request("GET", path)
+    return this.client.request("GET", path, {}, {}, customHeaders)
   }
 
-  list(query?: AdminGetOrdersParams): ResponsePromise<AdminOrdersListRes> {
+  list(query?: AdminGetOrdersParams, customHeaders: Record<string, any> = {}): ResponsePromise<AdminOrdersListRes> {
     let path = `/admin/orders`
 
     if (query) {
@@ -48,177 +48,191 @@ class AdminOrdersResource extends BaseResource {
       path = `/admin/orders?${queryString}`
     }
 
-    return this.client.request("GET", path)
+    return this.client.request("GET", path, {}, {}, customHeaders)
   }
 
-  complete(id: string): ResponsePromise<AdminOrdersRes> {
+  complete(id: string, customHeaders: Record<string, any> = {}): ResponsePromise<AdminOrdersRes> {
     const path = `/admin/orders/${id}/complete`
-    return this.client.request("POST", path)
+    return this.client.request("POST", path, {}, {}, customHeaders)
   }
 
-  capturePayment(id: string): ResponsePromise<AdminOrdersRes> {
+  capturePayment(id: string, customHeaders: Record<string, any> = {}): ResponsePromise<AdminOrdersRes> {
     const path = `/admin/orders/${id}/capture`
-    return this.client.request("POST", path)
+    return this.client.request("POST", path, {}, {}, customHeaders)
   }
 
   refundPayment(
     id: string,
-    payload: AdminPostOrdersOrderRefundsReq
-  ): ResponsePromise<AdminOrdersRes> {
+    payload: AdminPostOrdersOrderRefundsReq,
+    customHeaders: Record<string, any> = {}): ResponsePromise<AdminOrdersRes> {
     const path = `/admin/orders/${id}/refund`
-    return this.client.request("POST", path, payload)
+    return this.client.request("POST", path, payload, {}, customHeaders)
   }
 
   createFulfillment(
     id: string,
-    payload: AdminPostOrdersOrderFulfillmentsReq
-  ): ResponsePromise<AdminOrdersRes> {
+    payload: AdminPostOrdersOrderFulfillmentsReq,
+    customHeaders: Record<string, any> = {}): ResponsePromise<AdminOrdersRes> {
     const path = `/admin/orders/${id}/fulfillment`
-    return this.client.request("POST", path, payload)
+    return this.client.request("POST", path, payload, {}, customHeaders)
   }
 
   cancelFulfillment(
     id: string,
-    fulfillmentId: string
+    fulfillmentId: string,
+    customHeaders: Record<string, any> = {}
   ): ResponsePromise<AdminOrdersRes> {
     const path = `/admin/orders/${id}/fulfillments/${fulfillmentId}/cancel`
-    return this.client.request("POST", path)
+    return this.client.request("POST", path, {}, {}, customHeaders)
   }
 
   cancelSwapFulfillment(
     id: string,
     swapId: string,
-    fulfillmentId: string
+    fulfillmentId: string,
+    customHeaders: Record<string, any> = {}
   ): ResponsePromise<AdminOrdersRes> {
     const path = `/admin/orders/${id}/swaps/${swapId}/fulfillments/${fulfillmentId}/cancel`
-    return this.client.request("POST", path)
+    return this.client.request("POST", path, {}, {}, customHeaders)
   }
 
   cancelClaimFulfillment(
     id: string,
     claimId: string,
-    fulfillmentId: string
+    fulfillmentId: string,
+    customHeaders: Record<string, any> = {}
   ): ResponsePromise<AdminOrdersRes> {
     const path = `/admin/orders/${id}/claims/${claimId}/fulfillments/${fulfillmentId}/cancel`
-    return this.client.request("POST", path)
+    return this.client.request("POST", path, {}, {}, customHeaders)
   }
 
   createShipment(
     id: string,
-    payload: AdminPostOrdersOrderShipmentReq
+    payload: AdminPostOrdersOrderShipmentReq,
+    customHeaders: Record<string, any> = {}
   ): ResponsePromise<AdminOrdersRes> {
     const path = `/admin/orders/${id}/shipment`
-    return this.client.request("POST", path, payload)
+    return this.client.request("POST", path, payload, {}, customHeaders)
   }
 
   requestReturn(
     id: string,
-    payload: AdminPostOrdersOrderReturnsReq
+    payload: AdminPostOrdersOrderReturnsReq,
+    customHeaders: Record<string, any> = {}
   ): ResponsePromise<AdminOrdersRes> {
     const path = `/admin/orders/${id}/return`
-    return this.client.request("POST", path, payload)
+    return this.client.request("POST", path, payload, {}, customHeaders)
   }
 
-  cancel(id: string): ResponsePromise<AdminOrdersRes> {
+  cancel(id: string, customHeaders: Record<string, any> = {}): ResponsePromise<AdminOrdersRes> {
     const path = `/admin/orders/${id}/cancel`
-    return this.client.request("POST", path)
+    return this.client.request("POST", path, {}, {}, customHeaders)
   }
 
   addShippingMethod(
     id: string,
-    payload: AdminPostOrdersOrderShippingMethodsReq
+    payload: AdminPostOrdersOrderShippingMethodsReq,
+    customHeaders: Record<string, any> = {}
   ): ResponsePromise<AdminOrdersRes> {
     const path = `/admin/orders/${id}/shipping-methods`
-    return this.client.request("POST", path, payload)
+    return this.client.request("POST", path, payload, {}, customHeaders)
   }
 
-  archive(id: string): ResponsePromise<AdminOrdersRes> {
+  archive(id: string, customHeaders: Record<string, any> = {}): ResponsePromise<AdminOrdersRes> {
     const path = `/admin/orders/${id}/archive`
-    return this.client.request("POST", path)
+    return this.client.request("POST", path, {}, {}, customHeaders)
   }
 
   createSwap(
     id: string,
-    payload: AdminPostOrdersOrderSwapsReq
+    payload: AdminPostOrdersOrderSwapsReq,
+    customHeaders: Record<string, any> = {}
   ): ResponsePromise<AdminOrdersRes> {
     const path = `/admin/orders/${id}/swaps`
-    return this.client.request("POST", path, payload)
+    return this.client.request("POST", path, payload, {}, customHeaders)
   }
 
-  cancelSwap(id: string, swapId: string): ResponsePromise<AdminOrdersRes> {
+  cancelSwap(id: string, swapId: string, customHeaders: Record<string, any> = {}): ResponsePromise<AdminOrdersRes> {
     const path = `/admin/orders/${id}/swaps/${swapId}/cancel`
-    return this.client.request("POST", path)
+    return this.client.request("POST", path, {}, {}, customHeaders)
   }
 
   fulfillSwap(
     id: string,
     swapId: string,
-    payload: AdminPostOrdersOrderSwapsSwapFulfillmentsReq
+    payload: AdminPostOrdersOrderSwapsSwapFulfillmentsReq,
+    customHeaders: Record<string, any> = {}
   ): ResponsePromise<AdminOrdersRes> {
     const path = `/admin/orders/${id}/swaps/${swapId}/fulfillments`
-    return this.client.request("POST", path, payload)
+    return this.client.request("POST", path, payload, {}, customHeaders)
   }
 
   createSwapShipment(
     id: string,
     swapId: string,
-    payload: AdminPostOrdersOrderSwapsSwapShipmentsReq
+    payload: AdminPostOrdersOrderSwapsSwapShipmentsReq,
+    customHeaders: Record<string, any> = {}
   ): ResponsePromise<AdminOrdersRes> {
     const path = `/admin/orders/${id}/swaps/${swapId}/shipments`
-    return this.client.request("POST", path, payload)
+    return this.client.request("POST", path, payload, {}, customHeaders)
   }
 
   processSwapPayment(
     id: string,
-    swapId: string
+    swapId: string,
+    customHeaders: Record<string, any> = {}
   ): ResponsePromise<AdminOrdersRes> {
     const path = `/admin/orders/${id}/swaps/${swapId}/process-payment`
-    return this.client.request("POST", path)
+    return this.client.request("POST", path, {}, {}, customHeaders)
   }
 
   createClaim(
     id: string,
-    payload: AdminPostOrdersOrderClaimsReq
+    payload: AdminPostOrdersOrderClaimsReq,
+    customHeaders: Record<string, any> = {}
   ): ResponsePromise<AdminOrdersRes> {
     const path = `/admin/orders/${id}/claims`
-    return this.client.request("POST", path, payload)
+    return this.client.request("POST", path, payload, {}, customHeaders)
   }
 
-  cancelClaim(id: string, claimId: string): ResponsePromise<AdminOrdersRes> {
+  cancelClaim(id: string, claimId: string, customHeaders: Record<string, any> = {}): ResponsePromise<AdminOrdersRes> {
     const path = `/admin/orders/${id}/claims/${claimId}/cancel`
-    return this.client.request("POST", path)
+    return this.client.request("POST", path, {}, {}, customHeaders)
   }
 
   updateClaim(
     id: string,
     claimId: string,
-    payload: AdminPostOrdersOrderClaimsClaimReq
+    payload: AdminPostOrdersOrderClaimsClaimReq,
+    customHeaders: Record<string, any> = {}
   ): ResponsePromise<AdminOrdersRes> {
     const path = `/admin/orders/${id}/claims/${claimId}`
-    return this.client.request("POST", path, payload)
+    return this.client.request("POST", path, payload, {}, customHeaders)
   }
 
   fulfillClaim(
     id: string,
     claimId: string,
-    payload: AdminPostOrdersOrderClaimsClaimFulfillmentsReq
+    payload: AdminPostOrdersOrderClaimsClaimFulfillmentsReq,
+    customHeaders: Record<string, any> = {}
   ): ResponsePromise<AdminOrdersRes> {
     const path = `/admin/orders/${id}/claims/${claimId}/fulfillments`
-    return this.client.request("POST", path, payload)
+    return this.client.request("POST", path, payload, {}, customHeaders)
   }
 
   createClaimShipment(
     id: string,
     claimId: string,
-    payload: AdminPostOrdersOrderClaimsClaimShipmentsReq
+    payload: AdminPostOrdersOrderClaimsClaimShipmentsReq,
+    customHeaders: Record<string, any> = {}
   ): ResponsePromise<AdminOrdersRes> {
     const path = `/admin/orders/${id}/claims/${claimId}/shipments`
-    return this.client.request("POST", path, payload)
+    return this.client.request("POST", path, payload, {}, customHeaders)
   }
 
-  deleteMetadata(id: string, key: string): ResponsePromise<AdminOrdersRes> {
+  deleteMetadata(id: string, key: string, customHeaders: Record<string, any> = {}): ResponsePromise<AdminOrdersRes> {
     const path = `/admin/orders/${id}/metadata/${key}`
-    return this.client.request("DELETE", path)
+    return this.client.request("DELETE", path, {}, {}, customHeaders)
   }
 }
 
diff --git a/packages/medusa-js/src/resources/admin/products.ts b/packages/medusa-js/src/resources/admin/products.ts
index 2864cd1fa7..9f767284ab 100644
--- a/packages/medusa-js/src/resources/admin/products.ts
+++ b/packages/medusa-js/src/resources/admin/products.ts
@@ -20,30 +20,30 @@ import { ResponsePromise } from "../../typings"
 import BaseResource from "../base"
 
 class AdminProductsResource extends BaseResource {
-  create(payload: AdminPostProductsReq): ResponsePromise<AdminProductsRes> {
+  create(payload: AdminPostProductsReq, customHeaders: Record<string, any> = {}): ResponsePromise<AdminProductsRes> {
     const path = `/admin/products/`
-    return this.client.request("POST", path, payload)
+    return this.client.request("POST", path, payload, {}, customHeaders)
   }
 
-  retrieve(id: string): ResponsePromise<AdminProductsRes> {
+  retrieve(id: string, customHeaders: Record<string, any> = {}): ResponsePromise<AdminProductsRes> {
     const path = `/admin/products/${id}`
-    return this.client.request("GET", path)
+    return this.client.request("GET", path, {}, {}, customHeaders)
   }
 
   update(
     id: string,
-    payload: AdminPostProductsProductReq
-  ): ResponsePromise<AdminProductsRes> {
+    payload: AdminPostProductsProductReq,
+    customHeaders: Record<string, any> = {}): ResponsePromise<AdminProductsRes> {
     const path = `/admin/products/${id}`
-    return this.client.request("POST", path, payload)
+    return this.client.request("POST", path, payload, {}, customHeaders)
   }
 
-  delete(id: string): ResponsePromise<AdminProductsDeleteRes> {
+  delete(id: string, customHeaders: Record<string, any> = {}): ResponsePromise<AdminProductsDeleteRes> {
     const path = `/admin/products/${id}`
-    return this.client.request("DELETE", path)
+    return this.client.request("DELETE", path, {}, {}, customHeaders)
   }
 
-  list(query?: AdminGetProductsParams): ResponsePromise<AdminProductsListRes> {
+  list(query?: AdminGetProductsParams, customHeaders: Record<string, any> = {}): ResponsePromise<AdminProductsListRes> {
     let path = `/admin/products`
 
     if (query) {
@@ -51,75 +51,82 @@ class AdminProductsResource extends BaseResource {
       path = `/admin/products?${queryString}`
     }
 
-    return this.client.request("GET", path)
+    return this.client.request("GET", path, {}, {}, customHeaders)
   }
 
-  listTypes(): ResponsePromise<AdminProductsListTypesRes> {
+  listTypes(customHeaders: Record<string, any> = {}): ResponsePromise<AdminProductsListTypesRes> {
     const path = `/admin/products/types`
-    return this.client.request("GET", path)
+    return this.client.request("GET", path, {}, {}, customHeaders)
   }
 
-  listTags(): ResponsePromise<AdminProductsListTagsRes> {
+  listTags(customHeaders: Record<string, any> = {}): ResponsePromise<AdminProductsListTagsRes> {
     const path = `/admin/products/tag-usage`
-    return this.client.request("GET", path)
+    return this.client.request("GET", path, {}, {}, customHeaders)
   }
 
   setMetadata(
     id: string,
-    payload: AdminPostProductsProductMetadataReq
+    payload: AdminPostProductsProductMetadataReq,
+    customHeaders: Record<string, any> = {}
   ): ResponsePromise<AdminProductsRes> {
     const path = `/admin/products/${id}/metadata`
-    return this.client.request("POST", path, payload)
+    return this.client.request("POST", path, payload, {}, customHeaders)
   }
 
   createVariant(
     id: string,
-    payload: AdminPostProductsProductVariantsReq
+    payload: AdminPostProductsProductVariantsReq,
+    customHeaders: Record<string, any> = {}
   ): ResponsePromise<AdminProductsRes> {
     const path = `/admin/products/${id}/variants`
-    return this.client.request("POST", path, payload)
+    return this.client.request("POST", path, payload, {}, customHeaders)
   }
 
   updateVariant(
     id: string,
     variantId: string,
-    payload: AdminPostProductsProductVariantsVariantReq
+    payload: AdminPostProductsProductVariantsVariantReq,
+    customHeaders: Record<string, any> = {}
   ): ResponsePromise<AdminProductsRes> {
     const path = `/admin/products/${id}/variants/${variantId}`
-    return this.client.request("POST", path, payload)
+    return this.client.request("POST", path, payload, {}, customHeaders)
   }
 
   deleteVariant(
     id: string,
-    variantId: string
+    variantId: string,
+    customHeaders: Record<string, any> = {}
   ): ResponsePromise<AdminProductsDeleteVariantRes> {
     const path = `/admin/products/${id}/variants/${variantId}`
-    return this.client.request("DELETE", path)
+    return this.client.request("DELETE", path, {}, {}, customHeaders)
   }
 
   addOption(
     id: string,
-    payload: AdminPostProductsProductOptionsReq
+    payload: AdminPostProductsProductOptionsReq,
+    customHeaders: Record<string, any> = {}
   ): ResponsePromise<AdminProductsRes> {
     const path = `/admin/products/${id}/options`
-    return this.client.request("POST", path, payload)
+    return this.client.request("POST", path, payload, {}, customHeaders)
   }
 
   updateOption(
     id: string,
     optionId: string,
-    payload: AdminPostProductsProductOptionsOption
+    payload: AdminPostProductsProductOptionsOption,
+    customHeaders: Record<string, any> = {}
   ): ResponsePromise<AdminProductsRes> {
     const path = `/admin/products/${id}/options/${optionId}`
-    return this.client.request("POST", path, payload)
+    return this.client.request("POST", path, payload, {}, customHeaders)
   }
 
   deleteOption(
     id: string,
-    optionId: string
+    optionId: string,
+    customHeaders: Record<string, any> = {}
   ): ResponsePromise<AdminProductsDeleteOptionRes> {
     const path = `/admin/products/${id}/options/${optionId}`
-    return this.client.request("DELETE", path)
+    return this.client.request("DELETE", path, {}, {}, customHeaders)
   }
 }
 
diff --git a/packages/medusa-js/src/resources/admin/regions.ts b/packages/medusa-js/src/resources/admin/regions.ts
index 446277b76b..73d8882138 100644
--- a/packages/medusa-js/src/resources/admin/regions.ts
+++ b/packages/medusa-js/src/resources/admin/regions.ts
@@ -19,53 +19,59 @@ class AdminRegionsResource extends BaseResource {
   /**
    * @description creates a region.
    * @param payload
+   * @param customHeaders
    * @returns created region.
    */
-  create(payload: AdminPostRegionsReq): ResponsePromise<AdminRegionsRes> {
+  create(payload: AdminPostRegionsReq, customHeaders: Record<string, any> = {}): ResponsePromise<AdminRegionsRes> {
     const path = `/admin/regions`
-    return this.client.request("POST", path, payload)
+    return this.client.request("POST", path, payload, {}, customHeaders)
   }
 
   /**
    * @description updates a region
    * @param id id of the region to update.
    * @param payload update to apply to region.
+   * @param customHeaders
    * @returns the updated region.
    */
   update(
     id: string,
-    payload: AdminPostRegionsRegionReq
+    payload: AdminPostRegionsRegionReq,
+    customHeaders: Record<string, any> = {}
   ): ResponsePromise<AdminRegionsRes> {
     const path = `/admin/regions/${id}`
-    return this.client.request("POST", path, payload)
+    return this.client.request("POST", path, payload, {}, customHeaders)
   }
 
   /**
    * @description deletes a region
    * @param id id of region to delete.
+   * @param customHeaders
    * @returns Deleted response
    */
-  delete(id: string): ResponsePromise<AdminRegionsDeleteRes> {
+  delete(id: string, customHeaders: Record<string, any> = {}): ResponsePromise<AdminRegionsDeleteRes> {
     const path = `/admin/regions/${id}`
-    return this.client.request("DELETE", path)
+    return this.client.request("DELETE", path, {}, {}, customHeaders)
   }
 
   /**
    * @description get a region
    * @param id id of the region to retrieve.
+   * @param customHeaders
    * @returns the region with the given id
    */
-  retrieve(id: string): ResponsePromise<AdminRegionsRes> {
+  retrieve(id: string, customHeaders: Record<string, any> = {}): ResponsePromise<AdminRegionsRes> {
     const path = `/admin/regions/${id}`
-    return this.client.request("GET", path)
+    return this.client.request("GET", path, {}, {}, customHeaders)
   }
 
   /**
    * @description lists regions matching a query
    * @param query query for searching regions
+   * @param customHeaders
    * @returns a list of regions matching the query.
    */
-  list(query?: AdminGetRegionsParams): ResponsePromise<AdminRegionsListRes> {
+  list(query?: AdminGetRegionsParams, customHeaders: Record<string, any> = {}): ResponsePromise<AdminRegionsListRes> {
     let path = `/admin/regions`
 
     if (query) {
@@ -73,128 +79,145 @@ class AdminRegionsResource extends BaseResource {
       path = `/admin/regions?${queryString}`
     }
 
-    return this.client.request("GET", path)
+    return this.client.request("GET", path, {}, {}, customHeaders)
   }
 
   /**
    * @description adds metadata to a region
    * @param id region id
    * @param payload metadata
+   * @param customHeaders
    * @returns updated region
    */
   setMetadata(
     id: string,
-    payload: AdminPostRegionsRegionMetadata
+    payload: AdminPostRegionsRegionMetadata,
+    customHeaders: Record<string, any> = {}
   ): ResponsePromise<AdminRegionsRes> {
     const path = `/admin/regions/${id}/metadata`
-    return this.client.request("POST", path, payload)
+    return this.client.request("POST", path, payload, {}, customHeaders)
   }
 
   /**
    * @description delete a region's metadata key value pair
    * @param id region id
    * @param key metadata key
+   * @param customHeaders
    * @returns updated region
    */
-  deleteMetadata(id: string, key: string): ResponsePromise<AdminRegionsRes> {
+  deleteMetadata(id: string, key: string, customHeaders: Record<string, any> = {}): ResponsePromise<AdminRegionsRes> {
     const path = `/admin/regions/${id}/metadata/${key}`
-    return this.client.request("DELETE", path)
+    return this.client.request("DELETE", path, {}, {}, customHeaders)
   }
 
   /**
    * @description adds a country to the list of countries in a region
    * @param id region id
    * @param payload country data
+   * @param customHeaders
    * @returns updated region
    */
   addCountry(
     id: string,
-    payload: AdminPostRegionsRegionCountriesReq
+    payload: AdminPostRegionsRegionCountriesReq,
+    customHeaders: Record<string, any> = {}
   ): ResponsePromise<AdminRegionsRes> {
     const path = `/admin/regions/${id}/countries`
-    return this.client.request("POST", path, payload)
+    return this.client.request("POST", path, payload, {}, customHeaders)
   }
 
   /**
    * @description remove a country from a region's list of coutnries
    * @param id region id
    * @param country_code the 2 character ISO code for the Country.
+   * @param customHeaders
    * @returns updated region
    */
   deleteCountry(
     id: string,
-    country_code: string
+    country_code: string,
+    customHeaders: Record<string, any> = {}
   ): ResponsePromise<AdminRegionsRes> {
     const path = `/admin/regions/${id}/countries/${country_code}`
-    return this.client.request("DELETE", path)
+    return this.client.request("DELETE", path, {}, {}, customHeaders)
   }
 
   /**
    * @description adds a fulfillment provider to a region
    * @param id region id
    * @param payload fulfillment provider data
+   * @param customHeaders
    * @returns updated region
    */
   addFulfillmentProvider(
     id: string,
-    payload: AdminPostRegionsRegionFulfillmentProvidersReq
+    payload: AdminPostRegionsRegionFulfillmentProvidersReq,
+    customHeaders: Record<string, any> = {}
   ): ResponsePromise<AdminRegionsRes> {
     const path = `/admin/regions/${id}/fulfillment-providers`
-    return this.client.request("POST", path, payload)
+    return this.client.request("POST", path, payload, {}, customHeaders)
   }
 
   /**
    * @description remove a fulfillment provider from a region
    * @param id region id
    * @param provider_id the if of the fulfillment provider
+   * @param customHeaders
    * @returns updated region
    */
   deleteFulfillmentProvider(
     id: string,
-    provider_id: string
+    provider_id: string,
+    customHeaders: Record<string, any> = {}
   ): ResponsePromise<AdminRegionsRes> {
     const path = `/admin/regions/${id}/fulfillment-providers/${provider_id}`
-    return this.client.request("DELETE", path)
+    return this.client.request("DELETE", path, {}, {}, customHeaders)
   }
 
   /**
    * @description retrieves the list of fulfillment options available in a region
    * @param id region id
+   * @param customHeaders
    * @returns list of fulfillment options
    */
   retrieveFulfillmentOptions(
-    id: string
+    id: string,
+    customHeaders: Record<string, any> = {}
   ): ResponsePromise<AdminGetRegionsRegionFulfillmentOptionsRes> {
     const path = `/admin/regions/${id}/fulfillment-options`
-    return this.client.request("GET", path)
+    return this.client.request("GET", path, {}, {}, customHeaders)
   }
 
   /**
    * @description adds a payment provider to a region
    * @param id region id
    * @param payload payment provider data
+   * @param customHeaders
    * @returns updated region
    */
   addPaymentProvider(
     id: string,
-    payload: AdminPostRegionsRegionPaymentProvidersReq
+    payload: AdminPostRegionsRegionPaymentProvidersReq,
+    customHeaders: Record<string, any> = {}
   ): ResponsePromise<AdminRegionsRes> {
     const path = `/admin/regions/${id}/payment-providers`
-    return this.client.request("POST", path, payload)
+    return this.client.request("POST", path, payload, {}, customHeaders)
   }
 
   /**
    * @description removes a payment provider from a region
    * @param id region id
    * @param provider_id the id of the payment provider
+   * @param customHeaders
    * @returns updated region
    */
   deletePaymentProvider(
     id: string,
-    provider_id: string
+    provider_id: string,
+    customHeaders: Record<string, any> = {}
   ): ResponsePromise<AdminRegionsRes> {
     const path = `/admin/regions/${id}/payment-providers/${provider_id}`
-    return this.client.request("DELETE", path)
+    return this.client.request("DELETE", path, {}, {}, customHeaders)
   }
 }
 
diff --git a/packages/medusa-js/src/resources/admin/return-reasons.ts b/packages/medusa-js/src/resources/admin/return-reasons.ts
index 15155cabe6..83f4a42313 100644
--- a/packages/medusa-js/src/resources/admin/return-reasons.ts
+++ b/packages/medusa-js/src/resources/admin/return-reasons.ts
@@ -12,58 +12,64 @@ class AdminReturnReasonsResource extends BaseResource {
   /**
    * @description Creates a return reason.
    * @param payload
+   * @param customHeaders
    * @returns Created return reason.
    */
   create(
-    payload: AdminPostReturnReasonsReq
+    payload: AdminPostReturnReasonsReq,
+    customHeaders: Record<string, any> = {}
   ): ResponsePromise<AdminReturnReasonsRes> {
     const path = `/admin/return-reasons`
-    return this.client.request("POST", path, payload)
+    return this.client.request("POST", path, payload, {}, customHeaders)
   }
 
   /**
    * @description Updates a return reason
    * @param id id of the return reason to update.
    * @param payload update to apply to return reason.
+   * @param customHeaders
    * @returns the updated return reason.
    */
   update(
     id: string,
-    payload: AdminPostReturnReasonsReasonReq
+    payload: AdminPostReturnReasonsReasonReq,
+    customHeaders: Record<string, any> = {}
   ): ResponsePromise<AdminReturnReasonsRes> {
     const path = `/admin/return-reasons/${id}`
-    return this.client.request("POST", path, payload)
+    return this.client.request("POST", path, payload, {}, customHeaders)
   }
 
   /**
    * @description deletes a return reason
    * @param id id of return reason to delete.
+   * @param customHeaders
    * @returns Deleted response
    */
-  delete(id: string): ResponsePromise<AdminReturnReasonsDeleteRes> {
+  delete(id: string, customHeaders: Record<string, any> = {}): ResponsePromise<AdminReturnReasonsDeleteRes> {
     const path = `/admin/return-reasons/${id}`
-    return this.client.request("DELETE", path)
+    return this.client.request("DELETE", path, {}, {}, customHeaders)
   }
 
   /**
    * @description retrieves a return reason
    * @param id id of the return reason to retrieve.
+   * @param customHeaders
    * @returns the return reason with the given id
    */
-  retrieve(id: string): ResponsePromise<AdminReturnReasonsRes> {
+  retrieve(id: string, customHeaders: Record<string, any> = {}): ResponsePromise<AdminReturnReasonsRes> {
     const path = `/admin/return-reasons/${id}`
-    return this.client.request("GET", path)
+    return this.client.request("GET", path, {}, {}, customHeaders)
   }
 
   /**
    * @description Lists return reasons matching a query
-   * @param query Query for searching return reasons
    * @returns a list of return reasons matching the query.
+   * @param customHeaders
    */
-  list(): ResponsePromise<AdminReturnReasonsListRes> {
+  list(customHeaders: Record<string, any> = {}): ResponsePromise<AdminReturnReasonsListRes> {
     const path = `/admin/return-reasons`
 
-    return this.client.request("GET", path)
+    return this.client.request("GET", path, {}, {}, customHeaders)
   }
 }
 
diff --git a/packages/medusa-js/src/resources/admin/returns.ts b/packages/medusa-js/src/resources/admin/returns.ts
index 48c66e91b4..b61a826c6d 100644
--- a/packages/medusa-js/src/resources/admin/returns.ts
+++ b/packages/medusa-js/src/resources/admin/returns.ts
@@ -13,33 +13,37 @@ class AdminReturnsResource extends BaseResource {
   /**
    * @description cancels a return
    * @param id id of return to cancel
+   * @param customHeaders
    * @returns the order for which the return was canceled
    */
-  cancel(id: string): ResponsePromise<AdminReturnsCancelRes> {
+  cancel(id: string, customHeaders: Record<string, any> = {}): ResponsePromise<AdminReturnsCancelRes> {
     const path = `/admin/returns/${id}/cancel`
-    return this.client.request("POST", path)
+    return this.client.request("POST", path, {}, {}, customHeaders)
   }
 
   /**
    * @description receive a return
    * @param id id of the return to receive.
    * @param payload items to receive and an optional refund amount
+   * @param customHeaders
    * @returns the return
    */
   receive(
     id: string,
-    payload: AdminPostReturnsReturnReceiveReq
+    payload: AdminPostReturnsReturnReceiveReq,
+    customHeaders: Record<string, any> = {}
   ): ResponsePromise<AdminReturnsRes> {
     const path = `/admin/returns/${id}/receive`
-    return this.client.request("POST", path, payload)
+    return this.client.request("POST", path, payload, {}, customHeaders)
   }
 
   /**
    * @description lists returns matching a query
    * @param query query for searching returns
+   * @param customHeaders
    * @returns a list of returns matching the query
    */
-  list(query?: AdminGetReturnsParams): ResponsePromise<AdminReturnsListRes> {
+  list(query?: AdminGetReturnsParams, customHeaders: Record<string, any> = {}): ResponsePromise<AdminReturnsListRes> {
     let path = `/admin/returns/`
 
     if (query) {
@@ -47,7 +51,7 @@ class AdminReturnsResource extends BaseResource {
       path = `/admin/returns?${queryString}`
     }
 
-    return this.client.request("GET", path)
+    return this.client.request("GET", path, {}, {}, customHeaders)
   }
 }
 
diff --git a/packages/medusa-js/src/resources/admin/shipping-options.ts b/packages/medusa-js/src/resources/admin/shipping-options.ts
index 444fcf0cbf..a2e9d080d9 100644
--- a/packages/medusa-js/src/resources/admin/shipping-options.ts
+++ b/packages/medusa-js/src/resources/admin/shipping-options.ts
@@ -14,56 +14,64 @@ class AdminShippingOptionsResource extends BaseResource {
   /**
    * @description creates a shipping option.
    * @param payload
+   * @param customHeaders
    * @returns created shipping option.
    */
   create(
-    payload: AdminPostShippingOptionsReq
+    payload: AdminPostShippingOptionsReq,
+    customHeaders: Record<string, any> = {}
   ): ResponsePromise<AdminShippingOptionsRes> {
     const path = `/admin/shipping-options`
-    return this.client.request("POST", path, payload)
+    return this.client.request("POST", path, payload, {}, customHeaders)
   }
 
   /**
    * @description updates a shipping option
    * @param id id of the shipping option to update.
    * @param payload update to apply to shipping option.
+   * @param customHeaders
    * @returns the updated shipping option.
    */
   update(
     id: string,
-    payload: AdminPostShippingOptionsOptionReq
+    payload: AdminPostShippingOptionsOptionReq,
+    customHeaders: Record<string, any> = {}
   ): ResponsePromise<AdminShippingOptionsRes> {
     const path = `/admin/shipping-options/${id}`
-    return this.client.request("POST", path, payload)
+    return this.client.request("POST", path, payload, {}, customHeaders)
   }
 
   /**
    * @description deletes a shipping option
    * @param id id of shipping option to delete.
+   * @param customHeaders
    * @returns deleted response
    */
-  delete(id: string): ResponsePromise<AdminShippingOptionsDeleteRes> {
+  delete(id: string, customHeaders: Record<string, any> = {}): ResponsePromise<AdminShippingOptionsDeleteRes> {
     const path = `/admin/shipping-options/${id}`
-    return this.client.request("DELETE", path)
+    return this.client.request("DELETE", path, {}, {}, customHeaders)
   }
 
   /**
    * @description get a shipping option
    * @param id id of the shipping option to retrieve.
+   * @param customHeaders
    * @returns the shipping option with the given id
    */
-  retrieve(id: string): ResponsePromise<AdminShippingOptionsRes> {
+  retrieve(id: string, customHeaders: Record<string, any> = {}): ResponsePromise<AdminShippingOptionsRes> {
     const path = `/admin/shipping-options/${id}`
-    return this.client.request("GET", path)
+    return this.client.request("GET", path, {}, {}, customHeaders)
   }
 
   /**
    * @description lists shipping options matching a query
    * @param query query for searching shipping options
+   * @param customHeaders
    * @returns a list of shipping options matching the query.
    */
   list(
-    query?: AdminGetShippingOptionsParams
+    query?: AdminGetShippingOptionsParams,
+    customHeaders: Record<string, any> = {}
   ): ResponsePromise<AdminShippingOptionsListRes> {
     let path = `/admin/shipping-options`
 
@@ -72,7 +80,7 @@ class AdminShippingOptionsResource extends BaseResource {
       path = `/admin/shipping-options?${queryString}`
     }
 
-    return this.client.request("GET", path)
+    return this.client.request("GET", path, {}, {}, customHeaders)
   }
 }
 
diff --git a/packages/medusa-js/src/resources/admin/shipping-profiles.ts b/packages/medusa-js/src/resources/admin/shipping-profiles.ts
index 13d1c6c75d..348d33d388 100644
--- a/packages/medusa-js/src/resources/admin/shipping-profiles.ts
+++ b/packages/medusa-js/src/resources/admin/shipping-profiles.ts
@@ -10,33 +10,33 @@ import BaseResource from "../base"
 
 class AdminShippingProfilesResource extends BaseResource {
   create(
-    payload: AdminPostShippingProfilesReq
-  ): ResponsePromise<AdminShippingProfilesRes> {
+    payload: AdminPostShippingProfilesReq,
+    customHeaders: Record<string, any> = {}): ResponsePromise<AdminShippingProfilesRes> {
     const path = `/admin/shipping-profiles/`
-    return this.client.request("POST", path, payload)
+    return this.client.request("POST", path, payload, {}, customHeaders)
   }
 
   update(
     id: string,
-    payload: AdminPostShippingProfilesProfileReq
-  ): ResponsePromise<AdminShippingProfilesRes> {
+    payload: AdminPostShippingProfilesProfileReq,
+    customHeaders: Record<string, any> = {}): ResponsePromise<AdminShippingProfilesRes> {
     const path = `/admin/shipping-profiles/${id}`
-    return this.client.request("POST", path, payload)
+    return this.client.request("POST", path, payload, {}, customHeaders)
   }
 
-  delete(id: string): ResponsePromise<AdminDeleteShippingProfileRes> {
+  delete(id: string, customHeaders: Record<string, any> = {}): ResponsePromise<AdminDeleteShippingProfileRes> {
     const path = `/admin/shipping-profiles/${id}`
-    return this.client.request("DELETE", path)
+    return this.client.request("DELETE", path, {}, {}, customHeaders)
   }
 
-  retrieve(id: string): ResponsePromise<AdminShippingProfilesRes> {
+  retrieve(id: string, customHeaders: Record<string, any> = {}): ResponsePromise<AdminShippingProfilesRes> {
     const path = `/admin/shipping-profiles/${id}`
-    return this.client.request("GET", path)
+    return this.client.request("GET", path, {}, {}, customHeaders)
   }
 
-  list(): ResponsePromise<AdminShippingProfilesListRes> {
+  list(customHeaders: Record<string, any> = {}): ResponsePromise<AdminShippingProfilesListRes> {
     const path = `/admin/shipping-profiles/`
-    return this.client.request("GET", path)
+    return this.client.request("GET", path, {}, {}, customHeaders)
   }
 }
 
diff --git a/packages/medusa-js/src/resources/admin/store.ts b/packages/medusa-js/src/resources/admin/store.ts
index 98642309f8..b5f37cb52e 100644
--- a/packages/medusa-js/src/resources/admin/store.ts
+++ b/packages/medusa-js/src/resources/admin/store.ts
@@ -10,49 +10,52 @@ class AdminStoresResource extends BaseResource {
   /**
    * @description Updates the store
    * @param payload update to apply to the store.
+   * @param customHeaders
    * @returns the updated store.
    */
-  update(payload: AdminPostStoreReq): ResponsePromise<AdminStoresRes> {
+  update(payload: AdminPostStoreReq, customHeaders: Record<string, any> = {}): ResponsePromise<AdminStoresRes> {
     const path = `/admin/store/`
-    return this.client.request("POST", path, payload)
+    return this.client.request("POST", path, payload, {}, customHeaders)
   }
 
   /**
    * @description adds a currency to the store.
    * @param currency_code code of the currency to add
+   * @param customHeaders
    * @returns updated store.
    */
-  addCurrency(currency_code: string): ResponsePromise<AdminStoresRes> {
+  addCurrency(currency_code: string, customHeaders: Record<string, any> = {}): ResponsePromise<AdminStoresRes> {
     const path = `/admin/store/${currency_code}`
-    return this.client.request("POST", path)
+    return this.client.request("POST", path, {}, {}, customHeaders)
   }
 
   /**
    * @description deletes a currency from the available store currencies
    * @param currency_code currency code of the currency to delete from the store.
+   * @param customHeaders
    * @returns updated store
    */
-  deleteCurrency(currency_code: string): ResponsePromise<AdminStoresRes> {
+  deleteCurrency(currency_code: string, customHeaders: Record<string, any> = {}): ResponsePromise<AdminStoresRes> {
     const path = `/admin/store/currencies/${currency_code}`
-    return this.client.request("DELETE", path)
+    return this.client.request("DELETE", path, {}, {}, customHeaders)
   }
 
   /**
    * @description gets a medusa store
    * @returns a medusa store
    */
-  retrieve(): ResponsePromise<AdminStoresRes> {
+  retrieve(customHeaders: Record<string, any> = {}): ResponsePromise<AdminStoresRes> {
     const path = `/admin/store/`
-    return this.client.request("GET", path)
+    return this.client.request("GET", path, {}, {}, customHeaders)
   }
 
   /**
    * @description Lists the store's payment providers
    * @returns a list of payment providers configured on the store
    */
-  listPaymentProviders(): ResponsePromise<AdminPaymentProvidersList> {
+  listPaymentProviders(customHeaders: Record<string, any> = {}): ResponsePromise<AdminPaymentProvidersList> {
     const path = `/admin/store/payment-providers`
-    return this.client.request("GET", path)
+    return this.client.request("GET", path, {}, {}, customHeaders)
   }
 }
 
diff --git a/packages/medusa-js/src/resources/admin/swaps.ts b/packages/medusa-js/src/resources/admin/swaps.ts
index ab5e75ec33..689c4a356e 100644
--- a/packages/medusa-js/src/resources/admin/swaps.ts
+++ b/packages/medusa-js/src/resources/admin/swaps.ts
@@ -8,12 +8,12 @@ import { ResponsePromise } from "../../typings"
 import BaseResource from "../base"
 
 class AdminSwapsResource extends BaseResource {
-  retrieve(id: string): ResponsePromise<AdminSwapsRes> {
+  retrieve(id: string, customHeaders: Record<string, any> = {}): ResponsePromise<AdminSwapsRes> {
     const path = `/admin/swaps/${id}`
-    return this.client.request("GET", path)
+    return this.client.request("GET", path, {}, {}, customHeaders)
   }
 
-  list(query?: AdminGetSwapsParams): ResponsePromise<AdminSwapsListRes> {
+  list(query?: AdminGetSwapsParams, customHeaders: Record<string, any> = {}): ResponsePromise<AdminSwapsListRes> {
     let path = `/admin/swaps/`
 
     if (query) {
@@ -21,7 +21,7 @@ class AdminSwapsResource extends BaseResource {
       path = `/admin/swaps?${queryString}`
     }
 
-    return this.client.request("GET", path)
+    return this.client.request("GET", path, {}, {}, customHeaders)
   }
 }
 
diff --git a/packages/medusa-js/src/resources/admin/users.ts b/packages/medusa-js/src/resources/admin/users.ts
index 07a5b78dbd..062a93355e 100644
--- a/packages/medusa-js/src/resources/admin/users.ts
+++ b/packages/medusa-js/src/resources/admin/users.ts
@@ -16,78 +16,87 @@ class AdminUsersResource extends BaseResource {
   /**
    * @description resets password by re-sending password token.
    * @param payload payload for generating reset-password token.
+   * @param customHeaders
    * @returns
    */
   sendResetPasswordToken(
-    payload: AdminResetPasswordTokenRequest
+    payload: AdminResetPasswordTokenRequest,
+    customHeaders: Record<string, any> = {}
   ): ResponsePromise<void> {
     const path = `/admin/users/password-token`
-    return this.client.request("POST", path, payload)
+    return this.client.request("POST", path, payload, {}, customHeaders)
   }
 
   /**
    * @description resets the users password given the correct token.
    * @param payload reset password information.
+   * @param customHeaders
    * @returns
    */
   resetPassword(
-    payload: AdminResetPasswordRequest
+    payload: AdminResetPasswordRequest,
+    customHeaders: Record<string, any> = {}
   ): ResponsePromise<AdminUserRes> {
     const path = `admin/users/reset-password`
-    return this.client.request("POST", path, payload)
+    return this.client.request("POST", path, payload, {}, customHeaders)
   }
 
   /**
    * Retrieves a given user
    * @param id id of the user
+   * @param customHeaders
    * @returns the user
    */
-  retrieve(id: string): ResponsePromise<AdminUserRes> {
+  retrieve(id: string, customHeaders: Record<string, any> = {}): ResponsePromise<AdminUserRes> {
     const path = `/admin/users/${id}`
-    return this.client.request("GET", path)
+    return this.client.request("GET", path, {}, {}, customHeaders)
   }
 
   /**
    * @description creates a user with the provided information
    * @param payload user creation request body
+   * @param customHeaders
    * @returns created user
    */
-  create(payload: AdminCreateUserPayload): ResponsePromise<AdminUserRes> {
+  create(payload: AdminCreateUserPayload, customHeaders: Record<string, any> = {}): ResponsePromise<AdminUserRes> {
     const path = `/admin/users`
-    return this.client.request("POST", path, payload)
+    return this.client.request("POST", path, payload, {}, customHeaders)
   }
 
   /**
    * @description updates a given user
    * @param id id of the user to update
    * @param payload user update request body
+   * @param customHeaders
    * @returns the updated user
    */
   update(
     id: string,
-    payload: AdminUpdateUserPayload
+    payload: AdminUpdateUserPayload,
+    customHeaders: Record<string, any> = {}
   ): ResponsePromise<AdminUserRes> {
     const path = `/admin/users/${id}`
-    return this.client.request("POST", path, payload)
+    return this.client.request("POST", path, payload, {}, customHeaders)
   }
 
   /**
    * @description deletes a user
    * @param id id of the user to be deleted
+   * @param customHeaders
    * @returns delete response
    */
-  delete(id: string): ResponsePromise<AdminDeleteUserRes> {
+  delete(id: string, customHeaders: Record<string, any> = {}): ResponsePromise<AdminDeleteUserRes> {
     const path = `/admin/users/${id}`
-    return this.client.request("DELETE", path)
+    return this.client.request("DELETE", path, {}, {}, customHeaders)
   }
 
   /**
    * @description lists all users
    * @returns a list of all users
    */
-  list(): ResponsePromise<AdminUsersListRes> {
+  list(customHeaders: Record<string, any> = {}): ResponsePromise<AdminUsersListRes> {
     const path = `/admin/users`
-    return this.client.request("GET", path)
+    return this.client.request("GET", path, {}, {}, customHeaders)
   }
 }
 
diff --git a/packages/medusa-js/src/resources/admin/variants.ts b/packages/medusa-js/src/resources/admin/variants.ts
index 62a9d2f4e4..5a19e5c7e8 100644
--- a/packages/medusa-js/src/resources/admin/variants.ts
+++ b/packages/medusa-js/src/resources/admin/variants.ts
@@ -4,7 +4,7 @@ import { ResponsePromise } from "../.."
 import BaseResource from "../base"
 
 class AdminVariantsResource extends BaseResource {
-  list(query?: AdminGetVariantsParams): ResponsePromise<AdminVariantsListRes> {
+  list(query?: AdminGetVariantsParams, customHeaders: Record<string, any> = {}): ResponsePromise<AdminVariantsListRes> {
     let path = `/admin/variants`
 
     if (query) {
@@ -12,7 +12,7 @@ class AdminVariantsResource extends BaseResource {
       path = `/admin/variants?${queryString}`
     }
 
-    return this.client.request("GET", path)
+    return this.client.request("GET", path, {}, {}, customHeaders)
   }
 }
 
diff --git a/packages/medusa-js/src/resources/auth.ts b/packages/medusa-js/src/resources/auth.ts
index 37df601d65..6dfa507304 100644
--- a/packages/medusa-js/src/resources/auth.ts
+++ b/packages/medusa-js/src/resources/auth.ts
@@ -10,31 +10,34 @@ class AuthResource extends BaseResource {
   /**
    * @description Authenticates a customer using email and password combination
    * @param {StorePostAuthReq} payload authentication payload
+   * @param customHeaders
    * @return {ResponsePromise<StoreAuthRes>}
    */
-  authenticate(payload: StorePostAuthReq): ResponsePromise<StoreAuthRes> {
+  authenticate(payload: StorePostAuthReq, customHeaders: Record<string, any> = {}): ResponsePromise<StoreAuthRes> {
     const path = `/store/auth`
-    return this.client.request("POST", path, payload)
+    return this.client.request("POST", path, payload, {}, customHeaders)
   }
 
   /**
    * @description Retrieves an authenticated session
    * Usually used to check if authenticated session is alive.
+   * @param customHeaders
    * @return {ResponsePromise<StoreAuthRes>}
    */
-  getSession(): ResponsePromise<StoreAuthRes> {
+  getSession(customHeaders: Record<string, any> = {}): ResponsePromise<StoreAuthRes> {
     const path = `/store/auth`
-    return this.client.request("GET", path)
+    return this.client.request("GET", path, {}, {}, customHeaders)
   }
 
   /**
    * @description Check if email exists
    * @param {string} email is required
+   * @param customHeaders
    * @return {ResponsePromise<StoreGetAuthEmailRes>}
    */
-  exists(email: string): ResponsePromise<StoreGetAuthEmailRes> {
+  exists(email: string, customHeaders: Record<string, any> = {}): ResponsePromise<StoreGetAuthEmailRes> {
     const path = `/store/auth/${email}`
-    return this.client.request("GET", path)
+    return this.client.request("GET", path, {}, {}, customHeaders)
   }
 }
 
diff --git a/packages/medusa-js/src/resources/carts.ts b/packages/medusa-js/src/resources/carts.ts
index 977633ea8f..8f6a26fd04 100644
--- a/packages/medusa-js/src/resources/carts.ts
+++ b/packages/medusa-js/src/resources/carts.ts
@@ -18,14 +18,15 @@ class CartsResource extends BaseResource {
    * Adds a shipping method to cart
    * @param {string} cart_id Id of cart
    * @param {StorePostCartsCartShippingMethodReq} payload Containg id of shipping option and optional data
+   * @param customHeaders
    * @return {ResponsePromise<StoreCartsRes>}
    */
   addShippingMethod(
     cart_id: string,
-    payload: StorePostCartsCartShippingMethodReq
-  ): ResponsePromise<StoreCartsRes> {
+    payload: StorePostCartsCartShippingMethodReq,
+    customHeaders: Record<string, any> = {}): ResponsePromise<StoreCartsRes> {
     const path = `/store/carts/${cart_id}/shipping-methods`
-    return this.client.request("POST", path, payload)
+    return this.client.request("POST", path, payload, {}, customHeaders)
   }
 
   /**
@@ -35,22 +36,24 @@ class CartsResource extends BaseResource {
    * The completion of a cart can be performed idempotently with a provided header Idempotency-Key.
    * If not provuided, we will generate one for the request.
    * @param {string} cart_id is required
+   * @param customHeaders
    * @return {ResponsePromise<StoreCompleteCartRes>}
    */
-  complete(cart_id: string): ResponsePromise<StoreCompleteCartRes> {
+  complete(cart_id: string, customHeaders: Record<string, any> = {}): ResponsePromise<StoreCompleteCartRes> {
     const path = `/store/carts/${cart_id}/complete`
-    return this.client.request("POST", path)
+    return this.client.request("POST", path, {}, {}, customHeaders)
   }
 
   /**
    * Creates a cart
    * @param {StorePostCartReq} payload is optional and can contain a region_id and items.
    * The cart will contain the payload, if provided. Otherwise it will be empty
+   * @param customHeaders
    * @return {ResponsePromise<StoreCartsRes>}
    */
-  create(payload?: StorePostCartReq): ResponsePromise<StoreCartsRes> {
+  create(payload?: StorePostCartReq, customHeaders: Record<string, any> = {}): ResponsePromise<StoreCartsRes> {
     const path = `/store/carts`
-    return this.client.request("POST", path, payload)
+    return this.client.request("POST", path, payload, {}, customHeaders)
   }
 
   /**
@@ -58,25 +61,27 @@ class CartsResource extends BaseResource {
    * Initializes the payment sessions that can be used to pay for the items of the cart.
    * This is usually called when a customer proceeds to checkout.
    * @param {string} cart_id is required
+   * @param customHeaders
    * @return {ResponsePromise<StoreCartsRes>}
    */
-  createPaymentSessions(cart_id: string): ResponsePromise<StoreCartsRes> {
+  createPaymentSessions(cart_id: string, customHeaders: Record<string, any> = {}): ResponsePromise<StoreCartsRes> {
     const path = `/store/carts/${cart_id}/payment-sessions`
-    return this.client.request("POST", path)
+    return this.client.request("POST", path, {}, {}, customHeaders)
   }
 
   /**
    * Removes a discount from cart.
    * @param {string} cart_id is required
    * @param {string} code discount code to remove
+   * @param customHeaders
    * @return {ResponsePromise<StoreCartsRes>}
    */
   deleteDiscount(
     cart_id: string,
-    code: string
-  ): ResponsePromise<StoreCartsRes> {
+    code: string,
+    customHeaders: Record<string, any> = {}): ResponsePromise<StoreCartsRes> {
     const path = `/store/carts/${cart_id}/discounts/${code}`
-    return this.client.request("DELETE", path)
+    return this.client.request("DELETE", path, {}, {}, customHeaders)
   }
 
   /**
@@ -84,66 +89,71 @@ class CartsResource extends BaseResource {
    * Can be useful in case a payment has failed
    * @param {string} cart_id is required
    * @param {string} provider_id the provider id of the session e.g. "stripe"
+   * @param customHeaders
    * @return {ResponsePromise<StoreCartsRes>}
    */
   deletePaymentSession(
     cart_id: string,
-    provider_id: string
-  ): ResponsePromise<StoreCartsRes> {
+    provider_id: string,
+    customHeaders: Record<string, any> = {}): ResponsePromise<StoreCartsRes> {
     const path = `/store/carts/${cart_id}/payment-sessions/${provider_id}`
-    return this.client.request("DELETE", path)
+    return this.client.request("DELETE", path, {}, {}, customHeaders)
   }
 
   /**
    * Refreshes a payment session.
    * @param {string} cart_id is required
    * @param {string} provider_id the provider id of the session e.g. "stripe"
+   * @param customHeaders
    * @return {ResponsePromise<StoreCartsRes>}
    */
   refreshPaymentSession(
     cart_id: string,
-    provider_id: string
-  ): ResponsePromise<StoreCartsRes> {
+    provider_id: string,
+    customHeaders: Record<string, any> = {}): ResponsePromise<StoreCartsRes> {
     const path = `/store/carts/${cart_id}/payment-sessions/${provider_id}/refresh`
-    return this.client.request("POST", path)
+    return this.client.request("POST", path, {}, {}, customHeaders)
   }
 
   /**
    * Retrieves a cart
    * @param {string} cart_id is required
+   * @param customHeaders
    * @return {ResponsePromise<StoreCartsRes>}
    */
-  retrieve(cart_id: string): ResponsePromise<StoreCartsRes> {
+  retrieve(cart_id: string, customHeaders: Record<string, any> = {}): ResponsePromise<StoreCartsRes> {
     const path = `/store/carts/${cart_id}`
-    return this.client.request("GET", path)
+    return this.client.request("GET", path, {}, {}, customHeaders)
   }
 
   /**
    * Refreshes a payment session.
    * @param {string} cart_id is required
    * @param {StorePostCartsCartPaymentSessionReq} payload the provider id of the session e.g. "stripe"
+   * @param customHeaders
    * @return {ResponsePromise<StoreCartsRes>}
    */
   setPaymentSession(
     cart_id: string,
-    payload: StorePostCartsCartPaymentSessionReq
-  ): ResponsePromise<StoreCartsRes> {
+    payload: StorePostCartsCartPaymentSessionReq,
+    customHeaders: Record<string, any> = {}): ResponsePromise<StoreCartsRes> {
     const path = `/store/carts/${cart_id}/payment-session`
-    return this.client.request("POST", path, payload)
+    return this.client.request("POST", path, payload, {}, customHeaders)
   }
 
   /**
    * Updates a cart
    * @param {string} cart_id is required
    * @param {StorePostCartsCartReq} payload is required and can contain region_id, email, billing and shipping address
+   * @param customHeaders
    * @return {ResponsePromise<StoreCartsRes>}
    */
   update(
     cart_id: string,
-    payload: StorePostCartsCartReq
-  ): ResponsePromise<StoreCartsRes> {
+    payload: StorePostCartsCartReq,
+    customHeaders: Record<string, any> = {}): ResponsePromise<StoreCartsRes> {
     const path = `/store/carts/${cart_id}`
-    return this.client.request("POST", path, payload)
+    return this.client.request("POST", path, payload, {}, customHeaders)
   }
 
   /**
@@ -151,15 +161,16 @@ class CartsResource extends BaseResource {
    * @param {string} cart_id is required
    * @param {string} provider_id is required
    * @param {StorePostCartsCartPaymentSessionUpdateReq} payload is required
+   * @param customHeaders
    * @return {ResponsePromise<StoreCartsRes>}
    */
   updatePaymentSession(
     cart_id: string,
     provider_id: string,
-    payload: StorePostCartsCartPaymentSessionUpdateReq
-  ): ResponsePromise<StoreCartsRes> {
+    payload: StorePostCartsCartPaymentSessionUpdateReq,
+    customHeaders: Record<string, any> = {}): ResponsePromise<StoreCartsRes> {
     const path = `/store/carts/${cart_id}/payment-sessions/${provider_id}`
-    return this.client.request("POST", path, payload)
+    return this.client.request("POST", path, payload, {}, customHeaders)
   }
 }
 
diff --git a/packages/medusa-js/src/resources/collections.ts b/packages/medusa-js/src/resources/collections.ts
index 6278b05862..6cb8e03a5f 100644
--- a/packages/medusa-js/src/resources/collections.ts
+++ b/packages/medusa-js/src/resources/collections.ts
@@ -11,21 +11,23 @@ class CollectionsResource extends BaseResource {
   /**
    * @description Retrieves a single collection
    * @param {string} id id of the collection
+   * @param customHeaders
    * @return {ResponsePromise<StoreCollectionsRes>}
    */
-  retrieve(id: string): ResponsePromise<StoreCollectionsRes> {
+  retrieve(id: string, customHeaders: Record<string, any> = {}): ResponsePromise<StoreCollectionsRes> {
     const path = `/store/collections/${id}`
-    return this.client.request("GET", path)
+    return this.client.request("GET", path, {}, {}, customHeaders)
   }
 
   /**
    * @description Retrieves a list of collections
    * @param {string} query is optional. Can contain a limit and offset for the returned list
+   * @param customHeaders
    * @return {ResponsePromise<StoreCollectionsListRes>}
    */
   list(
-    query?: StoreGetCollectionsParams
-  ): ResponsePromise<StoreCollectionsListRes> {
+    query?: StoreGetCollectionsParams,
+    customHeaders: Record<string, any> = {}): ResponsePromise<StoreCollectionsListRes> {
     let path = `/store/collections`
 
     if (query) {
@@ -33,7 +35,7 @@ class CollectionsResource extends BaseResource {
       path = `/store/collections?${queryString}`
     }
 
-    return this.client.request("GET", path)
+    return this.client.request("GET", path, {}, {}, customHeaders)
   }
 }
 
diff --git a/packages/medusa-js/src/resources/customers.ts b/packages/medusa-js/src/resources/customers.ts
index 81408f4b2f..47e1a7b268 100644
--- a/packages/medusa-js/src/resources/customers.ts
+++ b/packages/medusa-js/src/resources/customers.ts
@@ -19,42 +19,46 @@ class CustomerResource extends BaseResource {
   /**
    * Creates a customer
    * @param {StorePostCustomersReq} payload information of customer
+   * @param customHeaders
    * @return { ResponsePromise<StoreCustomersRes>}
    */
-  create(payload: StorePostCustomersReq): ResponsePromise<StoreCustomersRes> {
+  create(payload: StorePostCustomersReq, customHeaders: Record<string, any> = {}): ResponsePromise<StoreCustomersRes> {
     const path = `/store/customers`
-    return this.client.request("POST", path, payload)
+    return this.client.request("POST", path, payload, {}, customHeaders)
   }
 
   /**
    * Retrieves the customer that is currently logged
+   * @param customHeaders
    * @return {ResponsePromise<StoreCustomersRes>}
    */
-  retrieve(): ResponsePromise<StoreCustomersRes> {
+  retrieve(customHeaders: Record<string, any> = {}): ResponsePromise<StoreCustomersRes> {
     const path = `/store/customers/me`
-    return this.client.request("GET", path)
+    return this.client.request("GET", path, {}, {}, customHeaders)
   }
 
   /**
    * Updates a customer
    * @param {StorePostCustomersCustomerReq} payload information to update customer with
+   * @param customHeaders
    * @return {ResponsePromise<StoreCustomersRes>}
    */
   update(
-    payload: StorePostCustomersCustomerReq
-  ): ResponsePromise<StoreCustomersRes> {
+    payload: StorePostCustomersCustomerReq,
+    customHeaders: Record<string, any> = {}): ResponsePromise<StoreCustomersRes> {
     const path = `/store/customers/me`
-    return this.client.request("POST", path, payload)
+    return this.client.request("POST", path, payload, {}, customHeaders)
   }
 
   /**
    * Retrieve customer orders
    * @param {StoreGetCustomersCustomerOrdersParams} params optional params to retrieve orders
+   * @param customHeaders
    * @return {ResponsePromise<StoreCustomersListOrdersRes>}
    */
   listOrders(
-    params?: StoreGetCustomersCustomerOrdersParams
-  ): ResponsePromise<StoreCustomersListOrdersRes> {
+    params?: StoreGetCustomersCustomerOrdersParams,
+    customHeaders: Record<string, any> = {}): ResponsePromise<StoreCustomersListOrdersRes> {
     let path = `/store/customers/me/orders`
     if (params) {
       const query = qs.stringify(params)
@@ -62,32 +66,35 @@ class CustomerResource extends BaseResource {
         path += `?${query}`
       }
     }
-    return this.client.request("GET", path)
+    return this.client.request("GET", path, {}, {}, customHeaders)
   }
 
   /**
    * Resets customer password
    * @param {StorePostCustomersCustomerPasswordTokenReq} payload info used to reset customer password
+   * @param customHeaders
    * @return {ResponsePromise<StoreCustomersRes>}
    */
   resetPassword(
-    payload: StorePostCustomersCustomerPasswordTokenReq
-  ): ResponsePromise<StoreCustomersRes> {
+    payload: StorePostCustomersCustomerPasswordTokenReq,
+    customHeaders: Record<string, any> = {}): ResponsePromise<StoreCustomersRes> {
     const path = `/store/customers/password-reset`
-    return this.client.request("POST", path, payload)
+    return this.client.request("POST", path, payload, {}, customHeaders)
   }
 
   /**
    * Generates a reset password token, which can be used to reset the password.
    * The token is not returned but should be sent out to the customer in an email.
    * @param {StorePostCustomersCustomerPasswordTokenReq} payload info used to generate token
+   * @param customHeaders
    * @return {ResponsePromise}
    */
   generatePasswordToken(
-    payload: StorePostCustomersCustomerPasswordTokenReq
+    payload: StorePostCustomersCustomerPasswordTokenReq,
+    customHeaders: Record<string, any> = {}
   ): ResponsePromise {
     const path = `/store/customers/password-token`
-    return this.client.request("POST", path, payload)
+    return this.client.request("POST", path, payload, {}, customHeaders)
   }
 }
 
diff --git a/packages/medusa-js/src/resources/gift-cards.ts b/packages/medusa-js/src/resources/gift-cards.ts
index bf6dd9a7ab..0e458b5bef 100644
--- a/packages/medusa-js/src/resources/gift-cards.ts
+++ b/packages/medusa-js/src/resources/gift-cards.ts
@@ -6,11 +6,12 @@ class GiftCardsResource extends BaseResource {
   /**
    * @description Retrieves a single GiftCard
    * @param {string} code code of the gift card
+   * @param customHeaders
    * @return {ResponsePromise<StoreGiftCardsRes>}
    */
-  retrieve(code: string): ResponsePromise<StoreGiftCardsRes> {
+  retrieve(code: string, customHeaders: Record<string, any> = {}): ResponsePromise<StoreGiftCardsRes> {
     const path = `/store/gift-cards/${code}`
-    return this.client.request("GET", path)
+    return this.client.request("GET", path, {}, {}, customHeaders)
   }
 }
 
diff --git a/packages/medusa-js/src/resources/line-items.ts b/packages/medusa-js/src/resources/line-items.ts
index 4a096fc741..6443301110 100644
--- a/packages/medusa-js/src/resources/line-items.ts
+++ b/packages/medusa-js/src/resources/line-items.ts
@@ -11,14 +11,15 @@ class LineItemsResource extends BaseResource {
    * Creates a line-item for a cart
    * @param {string} cart_id id of cart
    * @param {StorePostCartsCartLineItemsReq} payload details needed to create a line-item
+   * @param customHeaders
    * @return {ResponsePromise<StoreCartsRes>}
    */
   create(
     cart_id: string,
-    payload: StorePostCartsCartLineItemsReq
-  ): ResponsePromise<StoreCartsRes> {
+    payload: StorePostCartsCartLineItemsReq,
+    customHeaders: Record<string, any> = {}): ResponsePromise<StoreCartsRes> {
     const path = `/store/carts/${cart_id}/line-items`
-    return this.client.request("POST", path, payload)
+    return this.client.request("POST", path, payload, {}, customHeaders)
   }
 
   /**
@@ -27,26 +28,28 @@ class LineItemsResource extends BaseResource {
    * @param {string} cart_id id of cart
    * @param {string} line_id id of item to update
    * @param {StorePostCartsCartLineItemsItemReq} payload details needed to update a line-item
+   * @param customHeaders
    * @return {ResponsePromise<StoreCartsRes>}
    */
   update(
     cart_id: string,
     line_id: string,
-    payload: StorePostCartsCartLineItemsItemReq
-  ): ResponsePromise<StoreCartsRes> {
+    payload: StorePostCartsCartLineItemsItemReq,
+    customHeaders: Record<string, any> = {}): ResponsePromise<StoreCartsRes> {
     const path = `/store/carts/${cart_id}/line-items/${line_id}`
-    return this.client.request("POST", path, payload)
+    return this.client.request("POST", path, payload, {}, customHeaders)
   }
 
   /**
    * Remove a line-item from a cart
    * @param {string} cart_id id of cart
    * @param {string} line_id id of item to remove
-   * @return {ResponsePromise<StoreCartsDeleteRes>}
+   * @param customHeaders
+   * @return {ResponsePromise<StoreCartsRes>}
    */
-  delete(cart_id: string, line_id: string): ResponsePromise<StoreCartsRes> {
+  delete(cart_id: string, line_id: string, customHeaders: Record<string, any> = {}): ResponsePromise<StoreCartsRes> {
     const path = `/store/carts/${cart_id}/line-items/${line_id}`
-    return this.client.request("DELETE", path)
+    return this.client.request("DELETE", path, {}, {}, customHeaders)
   }
 }
 
diff --git a/packages/medusa-js/src/resources/orders.ts b/packages/medusa-js/src/resources/orders.ts
index ff55e898aa..921646e724 100644
--- a/packages/medusa-js/src/resources/orders.ts
+++ b/packages/medusa-js/src/resources/orders.ts
@@ -7,35 +7,38 @@ class OrdersResource extends BaseResource {
   /**
    * @description Retrieves an order
    * @param {string} id is required
+   * @param customHeaders
    * @return {ResponsePromise<StoreOrdersRes>}
    */
-  retrieve(id: string): ResponsePromise<StoreOrdersRes> {
+  retrieve(id: string, customHeaders: Record<string, any> = {}): ResponsePromise<StoreOrdersRes> {
     const path = `/store/orders/${id}`
-    return this.client.request("GET", path)
+    return this.client.request("GET", path, {}, {}, customHeaders)
   }
 
   /**
    * @description Retrieves an order by cart id
    * @param {string} cart_id is required
+   * @param customHeaders
    * @return {ResponsePromise<StoreOrdersRes>}
    */
-  retrieveByCartId(cart_id: string): ResponsePromise<StoreOrdersRes> {
+  retrieveByCartId(cart_id: string, customHeaders: Record<string, any> = {}): ResponsePromise<StoreOrdersRes> {
     const path = `/store/orders/cart/${cart_id}`
-    return this.client.request("GET", path)
+    return this.client.request("GET", path, {}, {}, customHeaders)
   }
 
   /**
    * @description Look up an order using order details
    * @param {StoreGetOrdersParams} payload details used to look up the order
+   * @param customHeaders
    * @return {ResponsePromise<StoreOrdersRes>}
    */
-  lookupOrder(payload: StoreGetOrdersParams): ResponsePromise<StoreOrdersRes> {
+  lookupOrder(payload: StoreGetOrdersParams, customHeaders: Record<string, any> = {}): ResponsePromise<StoreOrdersRes> {
     let path = `/store/orders?`
 
     const queryString = qs.stringify(payload)
     path = `/store/orders?${queryString}`
 
-    return this.client.request("GET", path, payload)
+    return this.client.request("GET", path, payload, {}, customHeaders)
   }
 }
 
diff --git a/packages/medusa-js/src/resources/payment-methods.ts b/packages/medusa-js/src/resources/payment-methods.ts
index d2f2cbaf4b..b367f8ee9f 100644
--- a/packages/medusa-js/src/resources/payment-methods.ts
+++ b/packages/medusa-js/src/resources/payment-methods.ts
@@ -6,11 +6,12 @@ class PaymentMethodsResource extends BaseResource {
   /**
    * Lists customer payment methods
    * @param {string} id id of cart
+   * @param customHeaders
    * @return {StoreCustomersListPaymentMethodsRes}
    */
-  list(id: string): ResponsePromise<StoreCustomersListPaymentMethodsRes> {
+  list(id: string, customHeaders: Record<string, any> = {}): ResponsePromise<StoreCustomersListPaymentMethodsRes> {
     const path = `/store/carts/${id}/payment-methods`
-    return this.client.request("GET", path)
+    return this.client.request("GET", path, {}, {}, customHeaders)
   }
 }
 
diff --git a/packages/medusa-js/src/resources/product-variants.ts b/packages/medusa-js/src/resources/product-variants.ts
index 13448d1bbd..39350ebfb8 100644
--- a/packages/medusa-js/src/resources/product-variants.ts
+++ b/packages/medusa-js/src/resources/product-variants.ts
@@ -11,26 +11,28 @@ class ProductVariantsResource extends BaseResource {
   /**
    * @description Retrieves a single product variant
    * @param {string} id is required
+   * @param customHeaders
    * @return {ResponsePromise<StoreVariantsRes>}
    */
-  retrieve(id: string): ResponsePromise<StoreVariantsRes> {
+  retrieve(id: string, customHeaders: Record<string, any> = {}): ResponsePromise<StoreVariantsRes> {
     const path = `/store/variants/${id}`
-    return this.client.request("GET", path)
+    return this.client.request("GET", path, {}, {}, customHeaders)
   }
 
   /**
    * @description Retrieves a list of of Product Variants
-   * @param {StoreVariantsListParamsObject} query
+   * @param {StoreGetVariantsParams} query
+   * @param customHeaders
    * @return {ResponsePromise<StoreVariantsListRes>}
    */
-  list(query?: StoreGetVariantsParams): ResponsePromise<StoreVariantsListRes> {
+  list(query?: StoreGetVariantsParams, customHeaders: Record<string, any> = {}): ResponsePromise<StoreVariantsListRes> {
     let path = `/store/variants`
     if (query) {
       const queryString = qs.stringify(query)
       path += `?${queryString}`
     }
 
-    return this.client.request("GET", path)
+    return this.client.request("GET", path, undefined, {}, customHeaders)
   }
 }
 
diff --git a/packages/medusa-js/src/resources/products.ts b/packages/medusa-js/src/resources/products.ts
index ac32be9d36..306b4c2247 100644
--- a/packages/medusa-js/src/resources/products.ts
+++ b/packages/medusa-js/src/resources/products.ts
@@ -16,31 +16,35 @@ class ProductsResource extends BaseResource {
   /**
    * @description Retrieves a single Product
    * @param {string} id is required
+   * @param customHeaders
    * @return {ResponsePromise<StoreProductsRes>}
    */
-  retrieve(id: string): ResponsePromise<StoreProductsRes> {
+  retrieve(id: string, customHeaders: Record<string, any> = {}): ResponsePromise<StoreProductsRes> {
     const path = `/store/products/${id}`
-    return this.client.request("GET", path)
+    return this.client.request("GET", path, {}, {}, customHeaders)
   }
 
   /**
    * @description Searches for products
    * @param {StorePostSearchReq} searchOptions is required
+   * @param customHeaders
    * @return {ResponsePromise<StorePostSearchRes>}
    */
   search(
-    searchOptions: StorePostSearchReq
+    searchOptions: StorePostSearchReq,
+    customHeaders: Record<string, any> = {}
   ): ResponsePromise<StorePostSearchRes> {
     const path = `/store/products/search`
-    return this.client.request("POST", path, searchOptions)
+    return this.client.request("POST", path, searchOptions, {}, customHeaders)
   }
 
   /**
    * @description Retrieves a list of products
    * @param {StoreGetProductsParams} query is optional. Can contain a limit and offset for the returned list
+   * @param customHeaders
    * @return {ResponsePromise<StoreProductsListRes>}
    */
-  list(query?: StoreGetProductsParams): ResponsePromise<StoreProductsListRes> {
+  list(query?: StoreGetProductsParams, customHeaders: Record<string, any> = {}): ResponsePromise<StoreProductsListRes> {
     let path = `/store/products`
 
     if (query) {
@@ -48,7 +52,7 @@ class ProductsResource extends BaseResource {
       path = `/store/products?${queryString}`
     }
 
-    return this.client.request("GET", path)
+    return this.client.request("GET", path, {}, {}, customHeaders)
   }
 }
 
diff --git a/packages/medusa-js/src/resources/regions.ts b/packages/medusa-js/src/resources/regions.ts
index 551d7881d5..bbf19cefa0 100644
--- a/packages/medusa-js/src/resources/regions.ts
+++ b/packages/medusa-js/src/resources/regions.ts
@@ -5,21 +5,23 @@ import BaseResource from "./base"
 class RegionsResource extends BaseResource {
   /**
    * @description Retrieves a list of regions
+   * @param customHeaders
    * @return {ResponsePromise<StoreRegionsListRes>}
    */
-  list(): ResponsePromise<StoreRegionsListRes> {
+  list(customHeaders: Record<string, any> = {}): ResponsePromise<StoreRegionsListRes> {
     const path = `/store/regions`
-    return this.client.request("GET", path)
+    return this.client.request("GET", path, {}, {}, customHeaders)
   }
 
   /**
    * @description Retrieves a region
    * @param {string} id is required
+   * @param customHeaders
    * @return {ResponsePromise<StoreRegionsRes>}
    */
-  retrieve(id: string): ResponsePromise<StoreRegionsRes> {
+  retrieve(id: string, customHeaders: Record<string, any> = {}): ResponsePromise<StoreRegionsRes> {
     const path = `/store/regions/${id}`
-    return this.client.request("GET", path)
+    return this.client.request("GET", path, {}, {}, customHeaders)
   }
 }
 
diff --git a/packages/medusa-js/src/resources/return-reasons.ts b/packages/medusa-js/src/resources/return-reasons.ts
index a06e14b62d..ff03044205 100644
--- a/packages/medusa-js/src/resources/return-reasons.ts
+++ b/packages/medusa-js/src/resources/return-reasons.ts
@@ -9,20 +9,22 @@ class ReturnReasonsResource extends BaseResource {
   /**
    * @description Retrieves a single Return Reason
    * @param {string} id is required
+   * @param customHeaders
    * @return {ResponsePromise<StoreReturnReasonsRes>}
    */
-  retrieve(id: string): ResponsePromise<StoreReturnReasonsRes> {
+  retrieve(id: string, customHeaders: Record<string, any> = {}): ResponsePromise<StoreReturnReasonsRes> {
     const path = `/store/return-reasons/${id}`
-    return this.client.request("GET", path)
+    return this.client.request("GET", path, {}, {}, customHeaders)
   }
 
   /**
    * Lists return reasons defined in Medusa Admin
+   * @param customHeaders
    * @return {ResponsePromise<StoreReturnReasonsListRes>}
    */
-  list(): ResponsePromise<StoreReturnReasonsListRes> {
+  list(customHeaders: Record<string, any> = {}): ResponsePromise<StoreReturnReasonsListRes> {
     const path = `/store/return-reasons`
-    return this.client.request("GET", path)
+    return this.client.request("GET", path, {}, {}, customHeaders)
   }
 }
 
diff --git a/packages/medusa-js/src/resources/returns.ts b/packages/medusa-js/src/resources/returns.ts
index c3a71c75eb..17b6358191 100644
--- a/packages/medusa-js/src/resources/returns.ts
+++ b/packages/medusa-js/src/resources/returns.ts
@@ -6,11 +6,12 @@ class ReturnsResource extends BaseResource {
   /**
    * Creates a return request
    * @param {StorePostReturnsReq} payload details needed to create a return
+   * @param customHeaders
    * @return {ResponsePromise<StoreReturnsRes>}
    */
-  create(payload: StorePostReturnsReq): ResponsePromise<StoreReturnsRes> {
+  create(payload: StorePostReturnsReq, customHeaders: Record<string, any> = {}): ResponsePromise<StoreReturnsRes> {
     const path = `/store/returns`
-    return this.client.request("POST", path, payload)
+    return this.client.request("POST", path, payload, {}, customHeaders)
   }
 }
 
diff --git a/packages/medusa-js/src/resources/shipping-options.ts b/packages/medusa-js/src/resources/shipping-options.ts
index 03f97395a9..74564a82cf 100644
--- a/packages/medusa-js/src/resources/shipping-options.ts
+++ b/packages/medusa-js/src/resources/shipping-options.ts
@@ -10,23 +10,23 @@ class ShippingOptionsResource extends BaseResource {
   /**
    * @description Lists shiping options available for a cart
    * @param {string} cart_id
+   * @param customHeaders
    * @return {ResponsePromise<StoreShippingOptionsListRes>}
    */
-  listCartOptions(
-    cart_id: string
-  ): ResponsePromise<StoreShippingOptionsListRes> {
+  listCartOptions(cart_id: string, customHeaders: Record<string, any> = {}): ResponsePromise<StoreShippingOptionsListRes> {
     const path = `/store/shipping-options/${cart_id}`
-    return this.client.request("GET", path)
+    return this.client.request("GET", path, {}, {}, customHeaders)
   }
 
   /**
    * @description Lists shiping options available
-   * @param {StoreGetShippingOptionsParamsObject} query
+   * @param {StoreGetShippingOptionsParams} query
+   * @param customHeaders
    * @return {ResponsePromise<StoreShippingOptionsListRes>}
    */
   list(
-    query?: StoreGetShippingOptionsParams
-  ): ResponsePromise<StoreShippingOptionsListRes> {
+    query?: StoreGetShippingOptionsParams,
+    customHeaders: Record<string, any> = {}): ResponsePromise<StoreShippingOptionsListRes> {
     let path = `/store/shipping-options`
 
     if (query) {
@@ -34,7 +34,7 @@ class ShippingOptionsResource extends BaseResource {
       path = `/store/shipping-options?${queryString}`
     }
 
-    return this.client.request("GET", path)
+    return this.client.request("GET", path, {}, {}, customHeaders)
   }
 }
 
diff --git a/packages/medusa-js/src/resources/swaps.ts b/packages/medusa-js/src/resources/swaps.ts
index dd3803a3e2..266ac9afca 100644
--- a/packages/medusa-js/src/resources/swaps.ts
+++ b/packages/medusa-js/src/resources/swaps.ts
@@ -6,21 +6,23 @@ class SwapsResource extends BaseResource {
   /**
    * @description Creates a swap from a cart
    * @param {StorePostSwapsReq} payload
+   * @param customHeaders
    * @return {ResponsePromise<StoreSwapsRes>}
    */
-  create(payload: StorePostSwapsReq): ResponsePromise<StoreSwapsRes> {
+  create(payload: StorePostSwapsReq, customHeaders: Record<string, any> = {}): ResponsePromise<StoreSwapsRes> {
     const path = `/store/swaps`
-    return this.client.request("POST", path, payload)
+    return this.client.request("POST", path, payload, {}, customHeaders)
   }
 
   /**
    * @description Retrieves a swap by cart id
    * @param {string} cart_id id of cart
+   * @param customHeaders
    * @return {ResponsePromise<StoreSwapsRes>}
    */
-  retrieveByCartId(cart_id: string): ResponsePromise<StoreSwapsRes> {
+  retrieveByCartId(cart_id: string, customHeaders: Record<string, any> = {}): ResponsePromise<StoreSwapsRes> {
     const path = `/store/swaps/${cart_id}`
-    return this.client.request("GET", path)
+    return this.client.request("GET", path, {}, {}, customHeaders)
   }
 }
 
diff --git a/packages/medusa/src/api/routes/admin/draft-orders/create-draft-order.ts b/packages/medusa/src/api/routes/admin/draft-orders/create-draft-order.ts
index 699c916d17..a5bab9b3c4 100644
--- a/packages/medusa/src/api/routes/admin/draft-orders/create-draft-order.ts
+++ b/packages/medusa/src/api/routes/admin/draft-orders/create-draft-order.ts
@@ -189,7 +189,7 @@ export class AdminPostDraftOrdersReq {
 
   @IsObject()
   @IsOptional()
-  metadata?: object = {}
+  metadata?: Record<string, any> = {}
 }
 
 class ShippingMethod {
@@ -198,7 +198,7 @@ class ShippingMethod {
 
   @IsObject()
   @IsOptional()
-  data?: object = {}
+  data?: Record<string, any> = {}
 
   @IsNumber()
   @IsOptional()
@@ -228,5 +228,5 @@ class Item {
 
   @IsObject()
   @IsOptional()
-  metadata?: object = {}
+  metadata?: Record<string, any> = {}
 }
diff --git a/packages/medusa/src/api/routes/admin/draft-orders/create-line-item.ts b/packages/medusa/src/api/routes/admin/draft-orders/create-line-item.ts
index e4945cd90c..06ffeff0e7 100644
--- a/packages/medusa/src/api/routes/admin/draft-orders/create-line-item.ts
+++ b/packages/medusa/src/api/routes/admin/draft-orders/create-line-item.ts
@@ -134,5 +134,5 @@ export class AdminPostDraftOrdersDraftOrderLineItemsReq {
 
   @IsObject()
   @IsOptional()
-  metadata?: object = {}
+  metadata?: Record<string, any> = {}
 }
diff --git a/packages/medusa/src/api/routes/admin/draft-orders/update-line-item.ts b/packages/medusa/src/api/routes/admin/draft-orders/update-line-item.ts
index 5ff8f9a29e..ff4a66f895 100644
--- a/packages/medusa/src/api/routes/admin/draft-orders/update-line-item.ts
+++ b/packages/medusa/src/api/routes/admin/draft-orders/update-line-item.ts
@@ -128,5 +128,5 @@ export class AdminPostDraftOrdersDraftOrderLineItemsItemReq {
 
   @IsObject()
   @IsOptional()
-  metadata?: object = {}
+  metadata?: Record<string, any> = {}
 }
diff --git a/packages/medusa/src/api/routes/admin/orders/add-shipping-method.ts b/packages/medusa/src/api/routes/admin/orders/add-shipping-method.ts
index 4258962927..47de55b040 100644
--- a/packages/medusa/src/api/routes/admin/orders/add-shipping-method.ts
+++ b/packages/medusa/src/api/routes/admin/orders/add-shipping-method.ts
@@ -70,5 +70,5 @@ export class AdminPostOrdersOrderShippingMethodsReq {
 
   @IsObject()
   @IsOptional()
-  data?: object = {}
+  data?: Record<string, any> = {}
 }
diff --git a/packages/medusa/src/api/routes/store/carts/add-shipping-method.ts b/packages/medusa/src/api/routes/store/carts/add-shipping-method.ts
index ae56e660ed..7a73dd1ab4 100644
--- a/packages/medusa/src/api/routes/store/carts/add-shipping-method.ts
+++ b/packages/medusa/src/api/routes/store/carts/add-shipping-method.ts
@@ -67,5 +67,5 @@ export class StorePostCartsCartShippingMethodReq {
   option_id: string
 
   @IsOptional()
-  data?: object = {}
+  data?: Record<string, any> = {}
 }
diff --git a/packages/medusa/src/services/cart.ts b/packages/medusa/src/services/cart.ts
index 0636b9e9e5..7b7fe1c67d 100644
--- a/packages/medusa/src/services/cart.ts
+++ b/packages/medusa/src/services/cart.ts
@@ -1215,7 +1215,7 @@ class CartService extends BaseService {
    *    this could be IP address or similar for fraud handling.
    * @return {Promise<Cart>} the resulting cart
    */
-  async authorizePayment(cartId: string, context: object = {}): Promise<Cart> {
+  async authorizePayment(cartId: string, context: Record<string, any> = {}): Promise<Cart> {
     return this.atomicPhase_(async (manager: EntityManager) => {
       const cartRepository = manager.getCustomRepository(this.cartRepository_)
 
@@ -1520,7 +1520,7 @@ class CartService extends BaseService {
   async addShippingMethod(
     cartId: string,
     optionId: string,
-    data: object = {}
+    data: Record<string, any> = {}
   ): Promise<Cart> {
     return this.atomicPhase_(async (manager: EntityManager) => {
       const cart = await this.retrieve(cartId, {
diff --git a/packages/medusa/src/services/product-variant.ts b/packages/medusa/src/services/product-variant.ts
index 7bb4be7466..3ced10225f 100644
--- a/packages/medusa/src/services/product-variant.ts
+++ b/packages/medusa/src/services/product-variant.ts
@@ -666,7 +666,7 @@ class ProductVariantService extends BaseService {
    * @param {Object} metadata - the metadata to set
    * @return {Object} updated metadata object
    */
-  setMetadata_(variant: ProductVariant, metadata: object): object {
+  setMetadata_(variant: ProductVariant, metadata: object): Record<string, any> {
     const existing = variant.metadata || {}
     const newData = {}
     for (const [key, value] of Object.entries(metadata)) {