generated: '2026-09-19'
method: searched
source: live probes of https://twelvedata.com, https://api.twelvedata.com, https://mcp.twelvedata.com
hosts:
- host: https://twelvedata.com
  documents:
  - path: /.well-known/api-catalog
    status: 200
    file: twelvedata-api-catalog.json
    note: RFC 9727 linkset pointing at the OpenAPI (api.twelvedata.com/doc/swagger/openapi.json), llms.txt,
      docs, and MCP server.
  - 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/ai-plugin.json
    status: 404
- host: https://api.twelvedata.com
  documents:
  - path: /.well-known/api-catalog
    status: 404
  - 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/ai-plugin.json
    status: 404
- host: https://mcp.twelvedata.com
  documents:
  - path: /.well-known/oauth-authorization-server
    status: 200
    file: twelvedata-mcp-oauth-authorization-server.json
    note: RFC 8414 metadata for the hosted MCP server OAuth (authorization_code + refresh_token, PKCE
      S256, dynamic client registration, single scope "twelvedata").
  - path: /.well-known/oauth-protected-resource
    status: 404
  - path: /.well-known/oauth-protected-resource
    status: 200
    file: twelvedata-mcp-oauth-protected-resource.json
    bytes: 173
  path_echo_control: passed
x-mcp-probe:
  probed: '2026-09-19'
  issue: roadmap#321, roadmap#337
  documents:
  - host: https://mcp.twelvedata.com
    path: /.well-known/oauth-protected-resource
    file: twelvedata-mcp-oauth-protected-resource.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
note: '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.'