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# MastraAuthClerk class

The `MastraAuthClerk` class provides authentication for Mastra applications using Clerk. It verifies incoming requests with Clerk-issued JWT tokens and integrates with the Mastra server using the `auth` option.

## Usage example

```typescript
import { Mastra } from '@mastra/core'
import { MastraAuthClerk } from '@mastra/auth-clerk'

export const mastra = new Mastra({
  server: {
    auth: new MastraAuthClerk({
      jwksUri: process.env.CLERK_JWKS_URI,
      publishableKey: process.env.CLERK_PUBLISHABLE_KEY,
      secretKey: process.env.CLERK_SECRET_KEY,
    }),
  },
})
```

## Restricting login to a single organization

Set `organizationId` or `organizationSlug` to only allow members of a specific Clerk organization to sign in. Non-members are rejected during authorization. Configure only one of the two. Setting both throws at startup, so login can't be granted to two different organizations.

```typescript
import { Mastra } from '@mastra/core'
import { MastraAuthClerk } from '@mastra/auth-clerk'

export const mastra = new Mastra({
  server: {
    auth: new MastraAuthClerk({
      jwksUri: process.env.CLERK_JWKS_URI,
      publishableKey: process.env.CLERK_PUBLISHABLE_KEY,
      secretKey: process.env.CLERK_SECRET_KEY,
      organizationId: process.env.CLERK_ORGANIZATION_ID,
    }),
  },
})
```

## Constructor parameters

**publishableKey** (`string`): Your Clerk publishable key. Can be found in your Clerk Dashboard under API Keys. (Default: `process.env.CLERK_PUBLISHABLE_KEY`)

**secretKey** (`string`): Your Clerk secret key. Used for server-side authentication and token verification. (Default: `process.env.CLERK_SECRET_KEY`)

**jwksUri** (`string`): The JWKS URI from your Clerk application. Used to verify JWT signatures. (Default: `process.env.CLERK_JWKS_URI`)

**organizationId** (`string`): Restrict login to members of a single Clerk organization, identified by its ID. Users who are not members of this organization are denied access. (Default: `process.env.CLERK_ORGANIZATION_ID`)

**organizationSlug** (`string`): Restrict login to members of a single Clerk organization, identified by its slug. Users who are not members of this organization are denied access. (Default: `process.env.CLERK_ORGANIZATION_SLUG`)

**name** (`string`): Custom name for the auth provider instance.

**authorizeUser** (`(user: User, request: HonoRequest) => Promise<boolean> | boolean`): Custom authorization function to determine if a user should be granted access. Called after token verification. By default, allows all authenticated users, unless organizationId or organizationSlug is set, in which case only members of that organization are allowed.

## Related

[MastraAuthClerk Class](https://mastra.ai/integrations/auth/clerk)