diff --git a/.changeset/serious-panthers-allow.md b/.changeset/serious-panthers-allow.md
new file mode 100644
index 0000000000..5cb9409e5e
--- /dev/null
+++ b/.changeset/serious-panthers-allow.md
@@ -0,0 +1,7 @@
+---
+"@medusajs/client-types": patch
+"@medusajs/medusa-oas-cli": patch
+"@medusajs/oas-github-ci": patch
+---
+
+fix(medusa-oas-cli): fix tool not working in Medusa backends
diff --git a/packages/generated/client-types/scripts/build.ts b/packages/generated/client-types/scripts/build.ts
index 30b4435560..857c9ba7b4 100644
--- a/packages/generated/client-types/scripts/build.ts
+++ b/packages/generated/client-types/scripts/build.ts
@@ -16,7 +16,7 @@ async function run() {
 }
 
 const generateOASSources = async (outDir: string) => {
-  const params = ["oas", `--out-dir=${outDir}`, "--type=combined"]
+  const params = ["oas", `--out-dir=${outDir}`, "--type=combined", "--local"]
   const { all: logs } = await execa("medusa-oas", params, {
     cwd: basePath,
     all: true,
diff --git a/packages/oas/medusa-oas-cli/src/__tests__/command-oas.test.ts b/packages/oas/medusa-oas-cli/src/__tests__/command-oas.test.ts
index f0b0a68e66..0538b0202e 100644
--- a/packages/oas/medusa-oas-cli/src/__tests__/command-oas.test.ts
+++ b/packages/oas/medusa-oas-cli/src/__tests__/command-oas.test.ts
@@ -8,9 +8,6 @@ import { readYaml } from "../utils/yaml-utils"
 import { readJson } from "../utils/json-utils"
 import execa from "execa"
 
-const medusaPackagePath = path.dirname(
-  require.resolve("@medusajs/medusa/package.json")
-)
 /**
  * OAS output directory
  * 
@@ -77,7 +74,7 @@ describe("command oas", () => {
      */
     beforeAll(async () => {
       const outDir = path.resolve(tmpDir, uid())
-      await runCLI("oas", ["--type", "admin", "--out-dir", outDir])
+      await runCLI("oas", ["--type", "admin", "--out-dir", outDir, "--local"])
       const generatedFilePath = path.resolve(outDir, "admin.oas.json")
       oas = (await readJson(generatedFilePath)) as OpenAPIObject
     })
@@ -104,7 +101,7 @@ describe("command oas", () => {
 
     beforeAll(async () => {
       const outDir = path.resolve(tmpDir, uid())
-      await runCLI("oas", ["--type", "store", "--out-dir", outDir])
+      await runCLI("oas", ["--type", "store", "--out-dir", outDir, "--local"])
       const generatedFilePath = path.resolve(outDir, "store.oas.json")
       oas = (await readJson(generatedFilePath)) as OpenAPIObject
     })
@@ -131,7 +128,7 @@ describe("command oas", () => {
 
     beforeAll(async () => {
       const outDir = path.resolve(tmpDir, uid())
-      await runCLI("oas", ["--type", "combined", "--out-dir", outDir])
+      await runCLI("oas", ["--type", "combined", "--out-dir", outDir, "--local"])
       const generatedFilePath = path.resolve(outDir, "combined.oas.json")
       oas = (await readJson(generatedFilePath)) as OpenAPIObject
     })
@@ -230,6 +227,7 @@ describe("command oas", () => {
         outDir,
         "--paths",
         additionalPath,
+        "--local"
       ])
       const generatedFilePath = path.resolve(outDir, "store.oas.json")
       oas = (await readJson(generatedFilePath)) as OpenAPIObject
@@ -365,6 +363,7 @@ components:
         outDir,
         "--base",
         filePath,
+        "--local"
       ])
       const generatedFilePath = path.resolve(outDir, "store.oas.json")
       oas = (await readJson(generatedFilePath)) as OpenAPIObject
@@ -455,4 +454,216 @@ components:
       ).toBeTruthy()
     })
   })
+
+  describe("public OAS", () => {
+    let oas: OpenAPIObject
+    /**
+     * In a CI context, beforeAll might exceed the configured jest timeout.
+     * Until we upgrade our jest version, the timeout error will be swallowed
+     * and the test will fail in unexpected ways.
+     */
+    beforeAll(async () => {
+      const outDir = path.resolve(tmpDir, uid())
+      await runCLI("oas", ["--type", "admin", "--out-dir", outDir])
+      const generatedFilePath = path.resolve(outDir, "admin.oas.json")
+      oas = (await readJson(generatedFilePath)) as OpenAPIObject
+    })
+
+    it("generates oas with admin routes only", async () => {
+      const routes = Object.keys(oas.paths)
+      expect(routes.includes("/admin/products")).toBeTruthy()
+      expect(routes.includes("/store/products")).toBeFalsy()
+    })    
+  })
+
+  describe("public OAS with base", () => {
+    let oas: OpenAPIObject
+    beforeAll(async () => {
+      const fileContent = `
+openapi: 3.1.0
+info:
+  version: 1.0.1
+  title: Custom API
+servers:
+  - url: https://foobar.com
+security:
+  - api_key: []
+externalDocs:
+  url: https://docs.com
+webhooks:
+  "foo-hook":
+    get:
+      responses:
+        "200":
+          description: OK
+tags:
+  - name: Products
+    description: Overwritten tag
+  - name: FoobarTag
+    description: Foobar tag description
+paths:
+  "/foobar/tests":
+    get:
+      operationId: GetFoobarTests
+      responses:
+        "200":
+          description: OK
+  "/store/regions":
+    get:
+      operationId: OverwrittenOperation
+      responses:
+        "200":
+          description: OK
+components:
+  schemas:
+    FoobarTestSchema:
+      type: object
+      properties:
+        foo:
+          type: string
+    StoreRegionsListRes:
+      type: object
+      properties:
+        foo:
+          type: string
+  callbacks:
+    fooCallback:
+      get:
+        description: foo callback
+  examples:
+    fooExample:
+      description: foo example
+  headers:
+    fooHeader:
+      description: foo header
+  links:
+    fooLink:
+      description: foo link
+      operationRef: GetFoobarTests
+  parameters:
+    fooParameter:
+      description: foo parameter
+      name: foobar
+      in: path
+      required: true
+      schema:
+        type: string
+  requestBodies:
+    fooRequestBody:
+      description: foo requestBody
+      content:
+        "application/octet-stream": { }
+  responses:
+    fooResponse:
+      description: foo response
+  securitySchemes:
+    fooSecurity:
+      description: foo security
+      type: apiKey
+      name: foo-api-key
+      in: header
+`
+      const targetDir = path.resolve(tmpDir, uid())
+      const filePath = path.resolve(targetDir, "custom.oas.base.yaml")
+      await fs.mkdir(targetDir, { recursive: true })
+      await fs.writeFile(filePath, fileContent, "utf8")
+
+      const outDir = path.resolve(tmpDir, uid())
+      await runCLI("oas", [
+        "--type",
+        "store",
+        "--out-dir",
+        outDir,
+        "--base",
+        filePath,
+      ])
+      const generatedFilePath = path.resolve(outDir, "store.oas.json")
+      oas = (await readJson(generatedFilePath)) as OpenAPIObject
+    })   
+
+    it("should add new path to existing paths", async () => {
+      const routes = Object.keys(oas.paths)
+      expect(routes.includes("/store/products")).toBeTruthy()
+      expect(routes.includes("/foobar/tests")).toBeTruthy()
+    })
+
+    it("should overwrite existing path", async () => {
+      expect(oas.paths["/store/regions"]["get"].operationId).toBe(
+        "OverwrittenOperation"
+      )
+    })
+
+    it("should add new schema to existing schemas", async () => {
+      const schemas = Object.keys(oas.components?.schemas ?? {})
+      expect(schemas.includes("StoreProductsListRes")).toBeTruthy()
+      expect(schemas.includes("FoobarTestSchema")).toBeTruthy()
+    })
+
+    it("should overwrite existing schema", async () => {
+      const schema = oas.components?.schemas?.StoreRegionsListRes as
+        | SchemaObject
+        | undefined
+      expect(schema?.properties?.foo).toBeDefined()
+    })
+
+    it("should replace base properties", async () => {
+      expect(oas.openapi).toBe("3.1.0")
+      expect(oas.info).toEqual({ version: "1.0.1", title: "Custom API" })
+      expect(oas.servers).toEqual([{ url: "https://foobar.com" }])
+      expect(oas.security).toEqual([{ api_key: [] }])
+      expect(oas.externalDocs).toEqual({ url: "https://docs.com" })
+      expect(oas.webhooks).toEqual({
+        "foo-hook": { get: { responses: { "200": { description: "OK" } } } },
+      })
+    })
+
+    it("should add new tag", async () => {
+      expect(oas.tags).toEqual(
+        expect.arrayContaining([
+          expect.objectContaining({
+            name: "FoobarTag",
+          }),
+        ])
+      )
+    })
+
+    it("should overwrite existing tag", async () => {
+      expect(oas.tags).toEqual(
+        expect.arrayContaining([
+          expect.objectContaining({
+            name: "Products",
+            description: "Overwritten tag",
+          }),
+        ])
+      )
+    })
+
+    it("should add new components", async () => {
+      const components = oas.components ?? {}
+      expect(
+        Object.keys(components.callbacks ?? {}).includes("fooCallback")
+      ).toBeTruthy()
+      expect(
+        Object.keys(components.examples ?? {}).includes("fooExample")
+      ).toBeTruthy()
+      expect(
+        Object.keys(components.headers ?? {}).includes("fooHeader")
+      ).toBeTruthy()
+      expect(
+        Object.keys(components.links ?? {}).includes("fooLink")
+      ).toBeTruthy()
+      expect(
+        Object.keys(components.parameters ?? {}).includes("fooParameter")
+      ).toBeTruthy()
+      expect(
+        Object.keys(components.requestBodies ?? {}).includes("fooRequestBody")
+      ).toBeTruthy()
+      expect(
+        Object.keys(components.responses ?? {}).includes("fooResponse")
+      ).toBeTruthy()
+      expect(
+        Object.keys(components.securitySchemes ?? {}).includes("fooSecurity")
+      ).toBeTruthy()
+    })
+  })
 })
diff --git a/packages/oas/medusa-oas-cli/src/command-oas.ts b/packages/oas/medusa-oas-cli/src/command-oas.ts
index 881bdbd4a5..8ee47e8c3a 100644
--- a/packages/oas/medusa-oas-cli/src/command-oas.ts
+++ b/packages/oas/medusa-oas-cli/src/command-oas.ts
@@ -26,16 +26,6 @@ const medusaTypesPath = path.dirname(
 const medusaUtilsPath = path.dirname(
   require.resolve("@medusajs/utils/package.json")
 )
-/**
- * OAS output directory
- * 
- * @privateRemark
- * This should be the only directory OAS is loaded from for Medusa V2.
- * For now, we only use it if the --v2 flag it passed to the CLI tool.
- */
-const oasOutputPath = path.resolve(
-  __dirname, "..", "..", "..", "..", "docs-util", "oas-output"
-)
 const basePath = path.resolve(__dirname, "../")
 
 /**
@@ -66,6 +56,10 @@ export const commandOptions: Option[] = [
   new Option(
     "--v2", 
     "Generate OAS files for V2 endpoints. This loads OAS from docs-util/oas-output/operations directory"
+  ),
+  new Option(
+    "--local",
+    "Generate OAS from local files rather than public OAS. This is useful for generating references in the Medusa monorepo."
   )
 ]
 
@@ -90,6 +84,7 @@ export async function execute(cliParams: OptionValues) {
   const dryRun = !!cliParams.dryRun
   const force = !!cliParams.force
   const v2 = !!cliParams.v2
+  const local = !!cliParams.local
 
   const apiType: ApiType = cliParams.type
 
@@ -122,11 +117,11 @@ export async function execute(cliParams: OptionValues) {
   console.log(`🟣 Generating OAS - ${apiType}`)
 
   if (apiType === "combined") {
-    const adminOAS = await getOASFromCodebase("admin", undefined, v2)
-    const storeOAS = await getOASFromCodebase("store", undefined, v2)
+    const adminOAS = !local ? await getPublicOas("admin", v2) :  await getOASFromCodebase("admin", v2)
+    const storeOAS = !local ? await getPublicOas("store", v2) :  await getOASFromCodebase("store", v2)
     oas = await combineOAS(adminOAS, storeOAS)
   } else {
-    oas = await getOASFromCodebase(apiType, undefined, v2)
+    oas = !local ? await getPublicOas(apiType, v2) :  await getOASFromCodebase(apiType, v2)
   }
 
   if (additionalPaths.length || baseFile) {
@@ -152,9 +147,18 @@ export async function execute(cliParams: OptionValues) {
  */
 async function getOASFromCodebase(
   apiType: ApiType,
-  customBaseFile?: string,
   v2?: boolean
 ): Promise<OpenAPIObject> {
+  /**
+   * OAS output directory
+   * 
+   * @privateRemark
+   * This should be the only directory OAS is loaded from for Medusa V2.
+   * For now, we only use it if the --v2 flag it passed to the CLI tool.
+   */
+  const oasOutputPath = path.resolve(
+    __dirname, "..", "..", "..", "..", "docs-util", "oas-output"
+  )
   const gen = await swaggerInline(
     v2 ? [
       path.resolve(oasOutputPath, "operations", apiType),
@@ -171,15 +175,21 @@ async function getOASFromCodebase(
       path.resolve(medusaPackagePath, "dist", `api/routes/${apiType}`),
     ],
     {
-      base:
-        customBaseFile ??
-        path.resolve(oasOutputPath, v2 ? "base-v2" : "base", `${apiType}.oas.base.yaml`),
+      base: path.resolve(oasOutputPath, v2 ? "base-v2" : "base", `${apiType}.oas.base.yaml`),
       format: ".json",
     }
   )
   return (await OpenAPIParser.parse(JSON.parse(gen))) as OpenAPIObject
 }
 
+async function getPublicOas(
+  apiType: ApiType,
+  v2?: boolean
+) {
+  const url = `https://docs.medusajs.com/api/download/${apiType}?version=${v2 ? "2" : "1"}`
+  return await OpenAPIParser.parse(url) as OpenAPIObject
+}
+
 async function getOASFromPaths(
   additionalPaths: string[] = [],
   customBaseFile?: string
diff --git a/packages/oas/oas-github-ci/scripts/build-openapi.js b/packages/oas/oas-github-ci/scripts/build-openapi.js
index 1c97cef9ad..9976e1c5b5 100755
--- a/packages/oas/oas-github-ci/scripts/build-openapi.js
+++ b/packages/oas/oas-github-ci/scripts/build-openapi.js
@@ -24,7 +24,7 @@ const run = async () => {
 }
 
 const generateOASSource = async (outDir, apiType) => {
-  const commandParams = ["oas", `--type=${apiType}`, `--out-dir=${outDir}`]
+  const commandParams = ["oas", `--type=${apiType}`, `--out-dir=${outDir}`, "--local"]
   if (v2) {
     commandParams.push(`--v2`)
   }
diff --git a/www/apps/api-reference/app/api/download/[area]/route.ts b/www/apps/api-reference/app/api/download/[area]/route.ts
index 1c2b2fd6f1..2f8eccda34 100644
--- a/www/apps/api-reference/app/api/download/[area]/route.ts
+++ b/www/apps/api-reference/app/api/download/[area]/route.ts
@@ -1,6 +1,7 @@
 import { existsSync, readFileSync } from "fs"
 import { NextResponse } from "next/server"
 import path from "path"
+import { Version } from "../../../../types/openapi"
 
 type DownloadParams = {
   params: {
@@ -9,8 +10,16 @@ type DownloadParams = {
 }
 
 export function GET(request: Request, { params }: DownloadParams) {
+  const { searchParams } = new URL(request.url)
   const { area } = params
-  const filePath = path.join(process.cwd(), `specs/${area}/openapi.full.yaml`)
+  const version =
+    process.env.NEXT_PUBLIC_VERSIONING === "true"
+      ? (searchParams.get("version") as Version) || "1"
+      : "1"
+  const filePath = path.join(
+    process.cwd(),
+    `${version === "1" ? "specs" : "specs-v2"}/${area}/openapi.full.yaml`
+  )
 
   if (!existsSync(filePath)) {
     return new NextResponse(null, {