generated: '2026-07-20'
method: searched
source: >-
  https://modcloth.com/.well-known/ucp,
  https://modcloth.com/.well-known/openid-configuration,
  https://modcloth.com/.well-known/oauth-authorization-server
standards:
- id: oauth2
  conforms: true
  evidence: RFC 8414 authorization-server metadata published; authorizationCode + refresh_token + jwt-bearer grants
- id: oidc
  conforms: true
  evidence: OpenID Connect discovery document at /.well-known/openid-configuration (RS256, PKCE S256)
- id: pkce
  conforms: true
  evidence: code_challenge_methods_supported includes S256
- id: ucp
  conforms: true
  evidence: Universal Commerce Protocol merchant profile at /.well-known/ucp (versions 2026-04-08, 2026-01-23)
- id: mcp
  conforms: true
  evidence: UCP shopping service exposed over MCP at /api/ucp/mcp
- id: llms-txt
  conforms: true
  evidence: /llms.txt and /agents.md agent-instruction documents published
- id: rfc9457-problem-details
  conforms: false
  evidence: no application/problem+json error surface documented