generated: '2026-09-19' method: probed source: live GET of /.well-known/* on every apis.yml + OpenAPI servers[] host note: 'Two real documents were returned. api.6sense.com serves RFC 8414 OAuth Authorization Server Metadata and RFC 9728 OAuth Protected Resource Metadata, both of which describe the 6sense remote MCP server at https://api.6sense.com/mcp (scopes_supported: mcp:use). No security.txt, api-catalog, ai-plugin.json or agent card is served on any host. 6sense.com itself sits behind a Cloudflare bot challenge and answered 403 "Just a moment..." to every probe, so absence on the marketing host is unproven rather than measured. support.6sense.com is a Document360 SPA that answers a 200/404 HTML shell for arbitrary paths; those are recorded as misses, not documents. 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.' hosts: - host: https://api.6sense.com documents: - path: /.well-known/oauth-authorization-server status: 200 content_type: application/json file: 6sense-oauth-authorization-server.json spec: RFC 8414 - path: /.well-known/oauth-protected-resource/mcp status: 200 content_type: application/json file: 6sense-oauth-protected-resource-mcp.json spec: RFC 9728 - path: /.well-known/oauth-protected-resource status: 404 - 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://epsilon.6sense.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 - path: /.well-known/agent-card.json status: 404 - path: /.well-known/agent.json status: 404 - host: https://scribe.6sense.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 - path: /.well-known/agent-card.json status: 404 - path: /.well-known/agent.json status: 404 - host: https://6sense.com note: Cloudflare interstitial — every path returned 403 "Just a moment...". Not a measured absence. documents: - path: /.well-known/security.txt status: 403 - path: /.well-known/agent-card.json status: 403 - path: /.well-known/agent.json status: 403 - path: /.well-known/api-catalog status: 403 - host: https://support.6sense.com note: Document360 SPA catch-all. Returns an HTML application shell for arbitrary /.well-known/* paths; treated as a miss per the soft-200 rule. documents: - path: /.well-known/security.txt status: 404 - path: /.well-known/agent-card.json status: 404 - path: /.well-known/agent.json status: 404 - path: /.well-known/api-catalog status: 404 - host: https://auth.6sense.com documents: - path: /v1/apps/agentic/P32lusHUPY06hG8MJtqJnKEmq7hJ/MS3CTIZ4l7VZ4pFeraAIy18Y6wIVN/.well-known/oauth-authorization-server status: 200 file: 6sense-auth-oauth-authorization-server.json bytes: 1887 path_echo_control: passed summary: documents_found: 2 security_txt: false agent_card: false api_catalog: false openid_configuration: false oauth_metadata: true x-mcp-probe: probed: '2026-09-19' issue: roadmap#321, roadmap#337 documents: - host: https://auth.6sense.com path: /v1/apps/agentic/P32lusHUPY06hG8MJtqJnKEmq7hJ/MS3CTIZ4l7VZ4pFeraAIy18Y6wIVN/.well-known/oauth-authorization-server file: 6sense-auth-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