generated: '2026-09-19' method: searched source: live probes of /.well-known/ on Public hosts hosts: - host: https://mcp.public.com documents: - path: /.well-known/oauth-protected-resource status: 200 file: public-oauth-protected-resource.json note: RFC 9728 OAuth 2.0 Protected Resource metadata for the hosted MCP server; declares authorization server and scopes (trading.read, trading.write, marketdata, openid). - path: /.well-known/openid-configuration status: 404 - path: /.well-known/oauth-authorization-server status: 404 - path: /.well-known/security.txt status: 404 - host: https://api.public.com documents: - path: /.well-known/security.txt status: 302 - path: /.well-known/openid-configuration status: 302 - path: /.well-known/oauth-authorization-server status: 302 - path: /.well-known/api-catalog status: 302 - host: https://public.com documents: - path: /.well-known/security.txt status: 403 - path: /.well-known/openid-configuration status: 403 - host: https://prod-api.154310543964.hellopublic.com documents: - path: /userapiauthservice/oauth2/.well-known/oauth-authorization-server status: 200 file: public-prod-api-oauth-authorization-server.json bytes: 1042 path_echo_control: passed x-mcp-probe: probed: '2026-09-19' issue: roadmap#321, roadmap#337 documents: - host: https://prod-api.154310543964.hellopublic.com path: /userapiauthservice/oauth2/.well-known/oauth-authorization-server file: public-prod-api-oauth-authorization-server.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.'