generated: '2026-07-21'
method: searched
standards:
- id: ucp
  name: Universal Commerce Protocol
  conforms: true
  versions:
  - '2026-04-08'
  - '2026-01-23'
  evidence: GET https://tnuck.com/.well-known/ucp returned 200 with a UCP merchant
    profile (shopping service over MCP, checkout/fulfillment/discount/cart/order
    capabilities); fetched 2026-07-21, saved at well-known/uscoop-ucp.json.
- id: oidc
  name: OpenID Connect discovery
  conforms: true
  evidence: GET https://tnuck.com/.well-known/openid-configuration returned 200
    (issuer https://shopify.com/authentication/63049990366); saved at
    well-known/uscoop-openid-configuration.json.
- id: oauth2
  name: OAuth 2.0 Authorization Server Metadata (RFC 8414)
  conforms: true
  evidence: GET https://tnuck.com/.well-known/oauth-authorization-server returned
    200; saved at well-known/uscoop-oauth-authorization-server.json.
- id: mcp
  name: Model Context Protocol
  conforms: true
  evidence: POST https://tnuck.com/api/ucp/mcp answered JSON-RPC 2.0 (UCP shopping
    service transport); probe recorded in mcp/uscoop-mcp.yml.
- id: llms-txt
  name: llms.txt
  conforms: true
  evidence: GET https://tnuck.com/llms.txt returned 200 (mirrors /agents.md);
    saved verbatim at llms/uscoop-llms.txt.
- id: rfc9116-security-txt
  name: security.txt (RFC 9116)
  conforms: false
  evidence: GET https://tnuck.com/.well-known/security.txt returned 404 on
    2026-07-21.