generated: '2026-09-21'
method: probed
generator: harvest-well-known.py
source: Live GET of the named /.well-known/ path list on every host the record knows; every row is a request that
  was issued.
summary:
  hosts_probed: 3
  paths_probed: 33
  documents_served: 1
hosts:
- host: developers.lseg.com
  control:
    path: /.well-known/apis-io-negative-control-7f3ab91c.json
    status: 200
    bytes: 110276
  documents:
  - path: /.well-known/security.txt
    status: 200
    standard: RFC 9116
    note: '200 carrying an HTML/SPA shell: not a document'
  - path: /.well-known/openid-configuration
    status: 200
    standard: OpenID Connect Discovery 1.0
    note: '200 carrying an HTML/SPA shell: not a document'
  - path: /.well-known/oauth-authorization-server
    status: 200
    standard: RFC 8414
    note: '200 carrying an HTML/SPA shell: not a document'
  - path: /.well-known/oauth-protected-resource
    status: 200
    standard: RFC 9728
    note: '200 carrying an HTML/SPA shell: not a document'
  - path: /.well-known/api-catalog
    status: 200
    standard: RFC 9727
    note: '200 carrying an HTML/SPA shell: not a document'
  - path: /.well-known/apis.json
    status: 200
    standard: APIs.json
    note: '200 carrying an HTML/SPA shell: not a document'
  - path: /.well-known/ai-plugin.json
    status: 200
    standard: OpenAI plugin manifest
    note: '200 carrying an HTML/SPA shell: not a document'
  - path: /.well-known/aauth-resource.json
    status: 200
    standard: AAuth
    note: '200 carrying an HTML/SPA shell: not a document'
  - path: /.well-known/ucp.json
    status: 200
    standard: UCP
    note: '200 carrying an HTML/SPA shell: not a document'
  - path: /.well-known/acp.json
    status: 200
    standard: ACP
    note: '200 carrying an HTML/SPA shell: not a document'
  - path: /.well-known/mcp/server-card.json
    status: 200
    standard: MCP server card
    note: '200 carrying an HTML/SPA shell: not a document'
- host: support.lseg.com
  control:
    path: /.well-known/apis-io-negative-control-7f3ab91c.json
    status: 401
    bytes: 0
  documents:
  - path: /.well-known/security.txt
    status: 401
    standard: RFC 9116
  - path: /.well-known/openid-configuration
    status: 200
    standard: OpenID Connect Discovery 1.0
    content_type: application/json;charset=UTF-8
    file: lseg-support-openid-configuration.json
  - path: /.well-known/oauth-authorization-server
    status: 401
    standard: RFC 8414
  - path: /.well-known/oauth-protected-resource
    status: 401
    standard: RFC 9728
  - path: /.well-known/api-catalog
    status: 401
    standard: RFC 9727
  - path: /.well-known/apis.json
    status: 401
    standard: APIs.json
  - path: /.well-known/ai-plugin.json
    status: 401
    standard: OpenAI plugin manifest
  - path: /.well-known/aauth-resource.json
    status: 401
    standard: AAuth
  - path: /.well-known/ucp.json
    status: 401
    standard: UCP
  - path: /.well-known/acp.json
    status: 401
    standard: ACP
  - path: /.well-known/mcp/server-card.json
    status: 401
    standard: MCP server card
- host: www.lseg.com
  control:
    path: /.well-known/apis-io-negative-control-7f3ab91c.json
    status: 404
    bytes: 0
  documents:
  - path: /.well-known/security.txt
    status: 404
    standard: RFC 9116
  - path: /.well-known/openid-configuration
    status: 404
    standard: OpenID Connect Discovery 1.0
  - path: /.well-known/oauth-authorization-server
    status: 404
    standard: RFC 8414
  - path: /.well-known/oauth-protected-resource
    status: 404
    standard: RFC 9728
  - path: /.well-known/api-catalog
    status: 404
    standard: RFC 9727
  - path: /.well-known/apis.json
    status: 404
    standard: APIs.json
  - path: /.well-known/ai-plugin.json
    status: 404
    standard: OpenAI plugin manifest
  - path: /.well-known/aauth-resource.json
    status: 404
    standard: AAuth
  - path: /.well-known/ucp.json
    status: 404
    standard: UCP
  - path: /.well-known/acp.json
    status: 404
    standard: ACP
  - path: /.well-known/mcp/server-card.json
    status: 404
    standard: MCP server card