generated: '2026-08-12' method: probed source: live HTTP probes of every Zefr-controlled host discovered via DNS and certificate transparency note: >- Zefr publishes no security.txt, api-catalog or ai-plugin.json on any host. The only real /.well-known documents served anywhere on zefr.com are the OpenID Connect / OAuth 2.0 Authorization Server Metadata documents on login.zefr.com — Zefr's custom Auth0 domain (CNAME zefr-prod-cd-qq34zjzlcmyzcxao.edge.tenants.auth0.com), which fronts the Zefr Brand Suitability Suite at suitability.zefr.com. The apex zefr.com answers 404 with an HTML shell for every /.well-known path; suitability.zefr.com answers 400 with an HTML shell. Neither is a document. hosts: - host: login.zefr.com role: identity provider (Auth0 custom domain) for the Zefr Brand Suitability Suite paths: - path: /.well-known/openid-configuration status: 200 content_type: application/json; charset=utf-8 file: zefr-openid-configuration.json document: true - path: /.well-known/oauth-authorization-server status: 200 content_type: application/json; charset=utf-8 file: zefr-oauth-authorization-server.json document: true - path: /.well-known/jwks.json status: 200 content_type: application/json; charset=utf-8 document: true saved: false note: JWKS not saved verbatim — signing keys rotate; the URI is recorded in the discovery document. - path: /.well-known/security.txt status: 404 document: false - path: /.well-known/api-catalog status: 404 document: false - path: /.well-known/oauth-protected-resource status: 404 document: false - path: /.well-known/agent-card.json status: 404 document: false - path: /.well-known/agent.json status: 404 document: false - host: zefr.com role: marketing site (Craft CMS) paths: - path: /.well-known/security.txt status: 404 document: false note: HTML 404 shell, not a document. - path: /.well-known/openid-configuration status: 404 document: false - path: /.well-known/oauth-authorization-server status: 404 document: false - path: /.well-known/api-catalog status: 404 document: false - path: /.well-known/ai-plugin.json status: 404 document: false - path: /.well-known/agent-card.json status: 404 document: false - path: /.well-known/agent.json status: 404 document: false - path: /llms.txt status: 404 document: false - host: suitability.zefr.com role: Zefr Brand Suitability Suite application (login required) paths: - path: /.well-known/security.txt status: 400 document: false note: HTML error shell for every /.well-known path. - path: /.well-known/agent-card.json status: 400 document: false - path: /.well-known/agent.json status: 400 document: false - path: /llms.txt status: 400 document: false - host: api.zefr.com role: production API gateway (Google Apigee) — no proxy resolves at any probed basepath paths: - path: /.well-known/agent-card.json status: 404 document: false note: 'Apigee fault body: "Unable to identify proxy for host: secure-zefr".' - path: /.well-known/agent.json status: 404 document: false - host: api2.zefr.com role: production API host (Google Cloud load balancer) paths: - path: /.well-known/agent-card.json status: 404 document: false - path: /.well-known/agent.json status: 404 document: false - path: /.well-known/security.txt status: 404 document: false summary: documents_served: 3 security_txt: false api_catalog: false ai_plugin: false agent_card: false openid_configuration: true oauth_authorization_server: true