> ## Documentation Index
> Fetch the complete documentation index at: https://openworklabs.com/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# Begin connecting the calling member to Microsoft 365

> 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.



## OpenAPI

````yaml /openapi.json get /v1/mcp-connections/microsoft-365/connect/start
openapi: 3.1.0
info:
  title: Den API
  description: >-
    OpenAPI spec for the Den control plane API.


    Authentication:

    - Use `Authorization: Bearer <session-token>` for user-authenticated routes
    that require a Den session.

    - Use `x-api-key: <den-api-key>` for API-key-authenticated routes that
    accept organization API keys.

    - Public routes like health and documentation do not require authentication.


    Swagger tip: use the security schemes in the Authorize dialog to set either
    `bearerAuth` or `denApiKey` before trying protected endpoints.
  version: dev
servers: []
security: []
tags:
  - name: System
    description: Service health and operational routes.
  - name: Organizations
    description: Top-level organization creation and context routes.
  - name: Invitations
    description: Invitation preview, acceptance, creation, and cancellation routes.
  - name: API Keys
    description: Organization API key management routes.
  - name: SCIM
    description: Organization SCIM connector management routes.
  - name: SSO
    description: Organization single sign-on connector management routes.
  - name: Members
    description: Organization member management routes.
  - name: Roles
    description: Organization custom role management routes.
  - name: Teams
    description: Organization team management routes.
  - name: Templates
    description: Organization shared template routes.
  - name: LLM Providers
    description: Organization LLM provider catalog, configuration, and access routes.
  - name: Skills
    description: Organization skill authoring and sharing routes.
  - name: Skill Hubs
    description: Organization skill hub management and access routes.
  - name: Workers
    description: Worker lifecycle, billing, and runtime routes.
  - name: Worker Runtime
    description: Worker runtime inspection and upgrade routes.
  - name: Worker Activity
    description: Worker heartbeat and activity reporting routes.
  - name: Telemetry
    description: Telemetry event ingestion and adoption analytics.
  - name: Admin
    description: Administrative reporting routes.
  - name: Users
    description: Current user and membership routes.
  - name: Bootstrap
    description: Agent-first provisional workspace setup routes.
paths:
  /v1/mcp-connections/microsoft-365/connect/start:
    get:
      tags:
        - Authentication
      summary: Begin connecting the calling member to Microsoft 365
      description: >-
        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.
      operationId: getV1McpConnectionsMicrosoft365ConnectStart
      responses:
        '200':
          description: Authorize URL, or already connected.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/NativeProviderConnectStartResponse'
        '400':
          description: The OAuth client configuration is incomplete.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/InvalidRequestError'
        '401':
          description: The caller must be signed in.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/UnauthorizedError'
        '404':
          description: The org has not configured an OAuth client for this provider yet.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/OAuthClientNotConfiguredError'
components:
  schemas:
    NativeProviderConnectStartResponse:
      type: object
      properties:
        status:
          type: string
          enum:
            - connected
            - needs_auth
        authorizeUrl:
          anyOf:
            - type: string
            - type: 'null'
      required:
        - status
        - authorizeUrl
    InvalidRequestError:
      type: object
      properties:
        error:
          type: string
          const: invalid_request
        details:
          type: array
          items:
            type: object
            properties:
              message:
                type: string
              path:
                type: array
                items:
                  anyOf:
                    - type: string
                    - type: number
            required:
              - message
            additionalProperties: {}
      required:
        - error
        - details
    UnauthorizedError:
      type: object
      properties:
        error:
          type: string
          const: unauthorized
      required:
        - error
    OAuthClientNotConfiguredError:
      type: object
      properties:
        error:
          type: string
          const: client_not_configured
        message:
          type: string
      required:
        - error
        - message

````