import { CodeTabs, CodeTab } from "docs-ui"

export const metadata = {
  title: `Links between API Key Module and Other Modules`,
}

# {metadata.title}

This document showcases the module links defined between the API Key Module and other commerce modules.

## Summary

The API Key Module has the following links to other modules:

- [`ApiKey` data model \<\> `SalesChannel` data model of Sales Channel Module](#sales-channel-module).

---

## Sales Channel Module

You can create a publishable API key and associate it with a sales channel. Medusa defines a link between the `ApiKey` and the `SalesChannel` data models.

![A diagram showcasing an example of how data models from the API Key and Sales Channel modules are linked](https://res.cloudinary.com/dza7lstvk/image/upload/v1709812064/Medusa%20Resources/sales-channel-api-key_zmqi2l.jpg)

This is useful to avoid passing the sales channel's ID as a parameter of every request, and instead pass the publishable API key in the header of any request to the Store API route.

Learn more about this in the [Sales Channel Module's documentation](../../sales-channel/publishable-api-keys/page.mdx).

### Retrieve with Query

To retrieve the sales channels of an API key with [Query](!docs!/learn/fundamentals/module-links/query), pass `sales_channels.*` in `fields`:

<CodeTabs group="relation-query">
  <CodeTab label="query.graph" value="method">

```ts
const { data: apiKeys } = await query.graph({
  entity: "api_key",
  fields: [
    "sales_channels.*",
  ],
})

// apiKeys.sales_channels
```

  </CodeTab>
  <CodeTab label="useQueryGraphStep" value="step">

```ts
import { useQueryGraphStep } from "@medusajs/medusa/core-flows"

// ...

const { data: apiKeys } = useQueryGraphStep({
  entity: "api_key",
  fields: [
    "sales_channels.*",
  ],
})

// apiKeys.sales_channels
```

  </CodeTab>
</CodeTabs>

### Manage with Link

To manage the sales channels of an API key, use [Link](!docs!/learn/fundamentals/module-links/link):

<CodeTabs group="relation-link">
  <CodeTab label="link.create" value="method">

```ts
import { Modules } from "@medusajs/framework/utils"

// ...

await link.create({
  [Modules.API_KEY]: {
    api_key_id: "apk_123",
  },
  [Modules.SALES_CHANNEL]: {
    sales_channel_id: "sc_123",
  },
})
```

  </CodeTab>
  <CodeTab label="createRemoteLinkStep" value="step">

```ts
import { Modules } from "@medusajs/framework/utils"
import { createRemoteLinkStep } from "@medusajs/medusa/core-flows"

// ...

createRemoteLinkStep({
  [Modules.API_KEY]: {
    api_key_id: "apk_123",
  },
  [Modules.SALES_CHANNEL]: {
    sales_channel_id: "sc_123",
  },
})
```

  </CodeTab>
</CodeTabs>