generated: '2026-07-19'
method: searched
source: live probes of the lingco.io and class.lingco.io hosts
notes: >-
  Lingco publishes no /.well-known/ discovery surface. Both hosts are
  single-page applications that return HTTP 200 with the SPA index.html for
  every unmatched path, so a raw status code is not evidence of a document.
  Every /.well-known/ path below was fetched and the body inspected: all
  returned the SPA shell (recorded as soft_404), so no well-known document was
  saved. The only real machine-readable documents found on either host are the
  Cloudflare-managed robots.txt on class.lingco.io (which carries a
  Content-Signal AI-usage declaration) and the LTI 1.3 JWKS.
hosts:
- host: https://lingco.io
  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: /llms.txt
    status: 404
  - path: /robots.txt
    status: 404
- host: https://class.lingco.io
  documents:
  - path: /.well-known/security.txt
    status: 200
    soft_404: true
    body: SPA index.html
  - path: /.well-known/openid-configuration
    status: 200
    soft_404: true
    body: SPA index.html
  - path: /.well-known/oauth-authorization-server
    status: 200
    soft_404: true
    body: SPA index.html
  - path: /.well-known/api-catalog
    status: 200
    soft_404: true
    body: SPA index.html
  - path: /.well-known/ai-plugin.json
    status: 200
    soft_404: true
    body: SPA index.html
  - path: /llms.txt
    status: 200
    soft_404: true
    body: SPA index.html
  - path: /openapi.json
    status: 200
    soft_404: true
    body: SPA index.html
  - path: /robots.txt
    status: 200
    soft_404: false
    file: lingco-language-labs-robots.txt
    kind: robots.txt with Content-Signal
  - path: /api/lti1p3/keys
    status: 200
    soft_404: false
    file: ../authentication/lingco-language-labs-lti1p3-jwks.json
    kind: JWKS (RFC 7517)
content_signal:
  source: well-known/lingco-language-labs-robots.txt
  managed_by: Cloudflare Managed Content
  signals:
    search: 'yes'
    ai-train: 'no'
    use: reference
  disallowed_agents:
  - Amazonbot
  - Applebot-Extended
  - Bytespider
  - CCBot
  - ClaudeBot
  - CloudflareBrowserRenderingCrawler
  - Google-Extended
  - GPTBot
  - meta-externalagent
security_txt:
  present: false
  note: no /.well-known/security.txt on any Lingco host; /security returns 404