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# userConnectRoutes()

Returns API routes that let your application's authenticated users connect their own provider accounts as [end-user connections](https://mastra.ai/docs/mastra-platform/connect/end-user-connections). Spread the result into the server's `apiRoutes`:

```typescript
import { Mastra } from '@mastra/core'
import { userConnectRoutes } from '@mastra/connect'

export const mastra = new Mastra({
  server: {
    auth: {
      authenticateToken: async token => verifyToken(token),
      mapUserToResourceId: user => user.id,
    },
    apiRoutes: [...userConnectRoutes({ providers: ['linear', 'slack'] })],
  },
})
```

Returns: `ApiRoute[]` for the server's `apiRoutes` option.

The routes do no authentication of their own: the server's auth pipeline authenticates each request, and `mapUserToResourceId` establishes the resource ID the routes are gated on. A request without a resolvable resource ID is rejected with a 401 on every route. All platform calls happen server-side with your platform token. The browser only ever talks to these routes.

## Parameters

**providers** (`string[]`): Required allowlist of provider IDs exposed to end users. The end-user surface never defaults open: providers outside this set return 404 on every route.

**resourceId** (`(ctx: { requestContext?, user? }) => string | undefined | Promise<string | undefined>`): Derives the caller's resource ID per request, overriding the default. Defaults to the server-derived resource ID that mapUserToResourceId sets after authentication. A request where the callback returns a falsy value or throws is rejected with 401.

**basePath** (`string`): Mount prefix for every route. Default '/connect'.

**projectId** (`string`): Platform project the routes act on. Falls back to MASTRA_PROJECT_ID.

**client** (`ConnectClientOptions`): Platform client overrides. See ConnectClientOptions in tools(). client.resourceId is rejected: the routes scope each request to the calling user.

**returnTo** (`{ allowedOrigins?: string[] }`): Origins (for example https\://app.example.com) allowed as absolute returnTo redirect targets on the hosted page. Relative paths are always allowed; all other values are rejected.

## Routes

All routes are gated on the caller's resource ID and respond with `Cache-Control: no-store`. Paths below use the default `/connect` base path.

| Route                                 | Description                                                                                                                                                                                                                                                                                                                                                                                                                          |
| ------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |
| `GET /connect/providers`              | The platform catalog filtered to the allowlist: `{ providers: [{ id, displayName, logoUrl, authType, authFields }] }`.                                                                                                                                                                                                                                                                                                               |
| `GET /connect/connections`            | Global connections plus the caller's own, filtered to the allowlist: `{ connections: [{ id, integrationId, status, accountLabel, scope }] }` where `scope` is `'global'` or `'user'`.                                                                                                                                                                                                                                                |
| `POST /connect/:provider/sessions`    | Creates a connect session owned by the caller: `{ connectionId, integrationId, connectUrl, sessionToken, expiresAt }`. Returns 404 for providers outside the allowlist.                                                                                                                                                                                                                                                              |
| `GET /connect/connections/:id/status` | Poll target for a visible (global or own) connection: `{ id, status, scope }`. An invisible connection returns the same 404 as an unknown ID.                                                                                                                                                                                                                                                                                        |
| `DELETE /connect/connections/:id`     | Disconnects the caller's own connection (204). Global connections return 403.                                                                                                                                                                                                                                                                                                                                                        |
| `GET /connect/:provider?returnTo=...` | Hosted connect page: a Connect button opens the provider's authorization flow in a popup, polls the status route, and redirects to the validated `returnTo` with `connectionId` and `status` query parameters. Loaded by top-level navigation, so it requires [cookie-based auth](https://mastra.ai/docs/mastra-platform/connect/end-user-connections); with token-only auth it returns 401 and the JSON routes are the alternative. |

## Error responses

Errors are JSON: `{ error: { code, message } }`. Platform failure details never reach the end user.

| Status | Code                                         | When                                                      |
| ------ | -------------------------------------------- | --------------------------------------------------------- |
| 401    | `unauthorized`                               | No resolvable resource ID for the request                 |
| 400    | `invalid_return_to`                          | `returnTo` isn't a relative path or an allowlisted origin |
| 403    | `forbidden`                                  | Deleting a global connection                              |
| 404    | `provider_not_found`, `connection_not_found` | Provider outside the allowlist or an invisible connection |
| 500    | `misconfigured`                              | Missing platform token or other configuration problem     |
| 502    | `platform_error`                             | The platform request failed                               |

Configuration problems detectable up front (an empty `providers` allowlist, a missing project ID, an invalid `basePath`, `client.resourceId`) throw a `MastraConnectError` from `userConnectRoutes()` itself.