generated: '2026-09-19' method: probed source: live GET of /.well-known/* on every Kit host in apis.yml + OpenAPI servers[] summary: hosts_probed: 4 paths_probed: 24 documents_found: 3 note: 'Three real documents were served: the A2A agent card on the developer docs host, and RFC 8414 / RFC 9728 OAuth metadata on the API host. The agent card is indexed here but its canonical artifact lives in a2a/. kit.com answers every /.well-known/* path with a Next.js 404 HTML shell — recorded as a miss, not a document.' hosts: - host: https://api.kit.com documents: - path: /.well-known/oauth-authorization-server status: 200 content_type: application/json file: convertkit-oauth-authorization-server.json spec: RFC 8414 - path: /.well-known/oauth-protected-resource status: 200 content_type: application/json file: convertkit-oauth-protected-resource.json spec: RFC 9728 note: Names https://app.kit.com/mcp as the protected resource — this is how the Kit MCP server is discoverable anonymously. - 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/agent-card.json status: 404 - path: /.well-known/agent.json status: 404 - host: https://app.kit.com documents: - path: /.well-known/oauth-authorization-server status: 200 content_type: application/json note: Byte-identical to the api.kit.com document; not saved twice. - path: /.well-known/oauth-protected-resource status: 200 content_type: application/json note: Byte-identical to the api.kit.com document; not saved twice. - path: /.well-known/agent-card.json status: 404 - path: /.well-known/oauth-protected-resource status: 200 file: convertkit-app-oauth-protected-resource.json bytes: 124 path_echo_control: passed - host: https://developers.kit.com documents: - path: /.well-known/agent-card.json status: 200 content_type: application/json file: ../a2a/convertkit-agent-card.json spec: A2A 1.0.0 - path: /.well-known/agent-skills/kit/skill.md status: 200 content_type: text/markdown file: ../skills/convertkit-kit-provider-skill.md note: Referenced from the agent card's skills[0].url. A provider-published Agent Skill, saved verbatim. - path: /.well-known/security.txt status: 404 - host: https://kit.com documents: - path: /.well-known/security.txt status: 404 note: Returns the site's HTML 404 shell. - 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 - path: /.well-known/agent-card.json status: 404 - path: /.well-known/agent.json status: 404 security_txt: served: false note: No RFC 9116 security.txt on any Kit host. Kit does publish a security page at https://kit.com/security — captured in security/convertkit-vulnerability-disclosure.yml — but not at the well-known path, so no SecurityTxt pointer is emitted. x-mcp-probe: probed: '2026-09-19' issue: roadmap#321, roadmap#337 documents: - host: https://app.kit.com path: /.well-known/oauth-protected-resource file: convertkit-app-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.'