generated: '2026-08-09'
method: probed
source: >-
  Live probes of the /.well-known/ discovery surface for every host in apis.yml
  (baseURL https://neutrinoapi.net/) and every OpenAPI servers[] entry, plus the
  documentation host https://www.neutrinoapi.com. Status is the HTTP code
  observed at fetch time (2026-08-09). Only documents that returned a real,
  correctly-typed payload were saved verbatim.
description: >-
  Neutrino API publishes an RFC 9727 API catalog (linkset) at
  https://www.neutrinoapi.com/.well-known/api-catalog which points at the
  OpenAPI 3.1 service description, the service documentation, and the status
  page. This is a rare and genuinely useful discovery artifact — it is the
  machine-readable front door to the whole developer surface. No security.txt,
  no OIDC/OAuth metadata (the API is API-key authenticated, not OAuth), and no
  ai-plugin manifest.
hosts:
  - host: https://www.neutrinoapi.com
    documents:
      - path: /.well-known/api-catalog
        status: 200
        type: application/linkset+json; profile="https://www.rfc-editor.org/info/rfc9727"
        file: neutrino-api-api-catalog.json
        note: RFC 9727 API catalog linkset — service-desc, service-doc and status links.
      - 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/oauth-protected-resource
        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
      - path: /llms.txt
        status: 404
      - path: /robots.txt
        status: 200
        type: text/plain
        note: >-
          Allows all crawlers and carries a Content-Signal header value
          "ai-train=yes, search=yes, ai-input=yes" — an explicit opt-in to AI
          training, search indexing and agent input.
  - host: https://neutrinoapi.net
    note: >-
      API host. Every unrouted path returns HTTP 400 with a JSON error envelope
      rather than 404, so no /.well-known/ document can be served from it.
    documents:
      - path: /.well-known/security.txt
        status: 400
      - path: /.well-known/openid-configuration
        status: 400
      - path: /.well-known/oauth-authorization-server
        status: 400
      - path: /.well-known/oauth-protected-resource
        status: 400
      - path: /.well-known/api-catalog
        status: 400
      - path: /.well-known/ai-plugin.json
        status: 400
      - path: /.well-known/agent-card.json
        status: 400
      - path: /.well-known/agent.json
        status: 400
  - host: https://neutrinoapi.com
    note: Backup API endpoint (separate TLD); same 400-for-everything behaviour.
    documents:
      - path: /.well-known/security.txt
        status: 400
      - path: /.well-known/api-catalog
        status: 400
      - path: /.well-known/agent-card.json
        status: 400
      - path: /.well-known/agent.json
        status: 400