generated: '2026-09-19'
method: searched
source: probed /.well-known/ across polar-signals hosts on 2026-07-20
hosts:
- host: https://api.polarsignals.com
  documents:
  - path: /.well-known/oauth-authorization-server
    status: 200
    file: polar-signals-oauth-authorization-server.json
    standard: RFC 8414 (OAuth 2.0 Authorization Server Metadata)
  - path: /.well-known/security.txt
    status: 404
  - path: /.well-known/openid-configuration
    status: 404
  - path: /.well-known/api-catalog
    status: 404
  - path: /.well-known/ai-plugin.json
    status: 404
  - path: /.well-known/oauth-protected-resource
    status: 200
    file: polar-signals-api-oauth-protected-resource.json
    bytes: 221
  path_echo_control: passed
- host: https://identity.polarsignals.com
  documents:
  - path: /.well-known/openid-configuration
    status: 200
    file: polar-signals-openid-configuration.json
    standard: OpenID Connect Discovery 1.0
- host: https://www.polarsignals.com
  documents:
  - path: /.well-known/security.txt
    status: 404
  - path: /.well-known/openid-configuration
    status: 404
  - path: /.well-known/oauth-authorization-server
    status: 404
  - path: /.well-known/api-catalog
    status: 404
  - path: /.well-known/ai-plugin.json
    status: 404
- host: https://cloud.polarsignals.com
  documents:
  - path: /.well-known/security.txt
    status: 404
  - path: /.well-known/openid-configuration
    status: 404
  - path: /.well-known/oauth-authorization-server
    status: 404
notes: The OAuth 2.0 Authorization Server Metadata document (RFC 8414) advertises issuer https://identity.polarsignals.com,
  authorization-code + refresh-token grants, PKCE (S256), dynamic client registration (RFC 7591), and
  the OIDC scopes openid/email/groups/profile/offline_access.
x-mcp-probe:
  probed: '2026-09-19'
  issue: roadmap#321, roadmap#337
  documents:
  - host: https://api.polarsignals.com
    path: /.well-known/oauth-protected-resource
    file: polar-signals-api-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.'