---
title: "Begin connecting the calling member to Microsoft 365"
method: GET
path: "/v1/mcp-connections/microsoft-365/connect/start"
tags: ["Authentication"]
---

# Begin connecting the calling member to Microsoft 365

`GET /v1/mcp-connections/microsoft-365/connect/start`

Native-provider twin of the external MCP connect/start route: returns an authorize URL for the browser, using the OAuth client the org saved for this provider.

## Response `200`

Authorize URL, or already connected.

- NativeProviderConnectStartResponse
  - `status` 'connected' | 'needs_auth', required
  - `authorizeUrl` string, nullable, required

## Other responses

- `400` — The OAuth client configuration is incomplete.
- `401` — The caller must be signed in.
- `404` — The org has not configured an OAuth client for this provider yet.

---

[API](https://skmtc.net/openworklabs/apis/den-api.md) · [All operations](https://skmtc.net/openworklabs/apis/den-api/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/openworklabs/den-api/revisions/29cfd2dde619/schema)