generated: '2026-06-20'
method: searched
source: live probes of API + OAuth authorization-server hosts
description: >-
  Well-known discovery surface. The Teams API is protected by the Microsoft
  Identity Platform (Entra ID); its OpenID Connect discovery document lives on
  the login.microsoftonline.com authorization server referenced by the OpenAPI
  oauth2 flows. graph.microsoft.com itself requires a bearer token for every
  path (including /.well-known/*), so those endpoints return 401 rather than a
  public document.
hosts:
  - host: https://login.microsoftonline.com/common
    documents:
      - path: /v2.0/.well-known/openid-configuration
        status: 200
        file: microsoft-teams-openid-configuration.json
      - path: /.well-known/oauth-authorization-server
        status: 404
  - host: https://graph.microsoft.com
    documents:
      - path: /.well-known/openid-configuration
        status: 401
      - path: /.well-known/oauth-authorization-server
        status: 401
      - path: /.well-known/security.txt
        status: 401
      - path: /.well-known/ai-plugin.json
        status: 401
      - path: /.well-known/api-catalog
        status: 401
  - host: https://outlook.office.com
    documents:
      - path: /.well-known/security.txt
        status: 404