generated: '2026-09-19'
method: searched
source: live probes of Microsoft 365 / Microsoft Identity Platform hosts
notes: Microsoft Graph (graph.microsoft.com) returns 401 on /.well-known/* (auth required). OAuth/OIDC
  discovery lives on the Microsoft Identity Platform host login.microsoftonline.com, which the Graph and
  Office.js OpenAPI declare as their authorization/token authority.
hosts:
- host: https://login.microsoftonline.com
  documents:
  - path: /common/v2.0/.well-known/openid-configuration
    status: 200
    file: microsoft-word-openid-configuration.json
  - path: /common/.well-known/oauth-authorization-server
    status: 404
- host: https://graph.microsoft.com
  documents:
  - path: /.well-known/openid-configuration
    status: 401
  - path: /.well-known/security.txt
    status: 401
- host: https://learn.microsoft.com
  documents:
  - path: /.well-known/security.txt
    status: 404
  - path: /llms.txt
    status: 404
- host: https://developer.microsoft.com
  documents:
  - path: /.well-known/security.txt
    status: 404
- host: https://microsoft.com
  documents:
  - path: /.well-known/security.txt
    status: 200
    note: see security/microsoft-word-vulnerability-disclosure.yml (MSRC)
- host: https://mcp.svc.cloud.microsoft
  documents:
  - path: /.well-known/oauth-protected-resource
    status: 200
    file: microsoft-word-mcp-oauth-protected-resource.json
    bytes: 295
  path_echo_control: passed
x-mcp-probe:
  probed: '2026-09-19'
  issue: roadmap#321, roadmap#337
  documents:
  - host: https://mcp.svc.cloud.microsoft
    path: /.well-known/oauth-protected-resource
    file: microsoft-word-mcp-oauth-protected-resource.json
  validated_on: resource (RFC 9728) / issuer (RFC 8414, OIDC)
  negative_control: one per host; a 2xx JSON object at an impossible path discards the host
note: 'MCP-host OAuth discovery added 2026-09-19 (roadmap#321/#337): the harvest visits a provider''s
  primary hosts, and RFC 9728 protected-resource metadata lives on the MCP host, so these documents existed
  and were invisible to the scorer. Fetched live and validated on `resource`/`issuer`; one negative control
  per host.'