generated: '2026-07-20' method: searched source: live /.well-known/* metadata on api.numeric.io + auth.numeric.io standards: - id: oauth2 conforms: true evidence: >- auth.numeric.io publishes OAuth 2.0 endpoints (authorize/token/introspection/register) with authorization_code, refresh_token, client_credentials and device_code grants. - id: oidc conforms: true evidence: >- auth.numeric.io/.well-known/openid-configuration advertises issuer, userinfo, jwks_uri and openid scope (RS256 id_token signing). - id: rfc8414-authorization-server-metadata conforms: true evidence: /.well-known/oauth-authorization-server returns 200 on both api.numeric.io and auth.numeric.io. - id: rfc9728-protected-resource-metadata conforms: true evidence: >- api.numeric.io/.well-known/oauth-protected-resource(/mcp) returns 200; the MCP endpoint issues an RFC 9728 WWW-Authenticate challenge referencing it. - id: rfc7636-pkce conforms: true evidence: code_challenge_methods_supported includes S256. - id: rfc8628-device-authorization-grant conforms: true evidence: device_authorization_endpoint advertised; device_code grant supported. - id: mcp-model-context-protocol conforms: true evidence: OAuth-protected MCP server at https://api.numeric.io/mcp with published skills library.