generated: '2026-08-05'
method: probed
source: live probes of every Syllable host, 2026-08-05
summary: >-
  One /.well-known/ document is served across the whole estate: the A2A agent card on the
  documentation host. There is no security.txt, no api-catalog, no OIDC or OAuth discovery
  document, and no ai-plugin.json anywhere. All four hosts return honest 404s (api.syllable.cloud
  returns a plain-text "404 page not found"; syllable.ai returns its own 404 page), so no
  SPA catch-all false positives were possible on these probes.
hosts:
- host: https://docs.syllable.ai
  documents:
  - path: /.well-known/agent-card.json
    status: 200
    content_type: application/json
    file: ../a2a/syllable-agent-card.json
    type: A2A Agent Card
  - path: /.well-known/agent-skills/actiumhealth/skill.md
    status: 200
    file: ../skills/syllable-docs-agent-skill.md
    type: Agent Skill
    note: Referenced by the skills[] entry in the agent card.
  - path: /.well-known/agent.json
    status: 404
  - path: /.well-known/security.txt
    status: 404
  - path: /.well-known/api-catalog
    status: 404
  - path: /.well-known/openid-configuration
    status: 404
  - path: /.well-known/oauth-authorization-server
    status: 404
  - path: /.well-known/ai-plugin.json
    status: 404
- host: https://api.syllable.cloud
  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/oauth-protected-resource
    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://syllable.ai
  documents:
  - path: /.well-known/security.txt
    status: 404
  - path: /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
gaps:
- >-
  No RFC 9116 security.txt on any host, despite a published trust center carrying SOC 2,
  HIPAA, HITRUST and GDPR posture. This is the cheapest single fix available to Syllable.
- >-
  No /.well-known/api-catalog, so the OpenAPI at spec.speakeasy.com is discoverable only by
  reading the rendered documentation pages.