generated: '2026-09-04'
method: probed
source: https://williesreserve.com/.well-known/openid-configuration
description: >-
  Willie's Reserve exposes two distinct authentication postures. The UCP/MCP commerce endpoint is
  anonymous — a tools/list call with no credentials returned the full tool set — while the
  customer-account surface is an OpenID Connect provider whose discovery document is served from
  the store's own domain and issued by Shopify on the store's behalf.
surfaces:
- name: UCP / MCP commerce endpoint
  endpoint: https://williesreserve.com/api/ucp/mcp
  scheme: none
  type: anonymous
  verified: probed
  http_status: 200
  note: >-
    No Authorization header was sent and the server returned the full 13-tool manifest. Payment
    still requires a buyer-approved payment instrument and explicit human approval at completion,
    so anonymous discovery does not imply anonymous purchase.
- name: Customer Accounts (OpenID Connect)
  scheme: openIdConnect
  type: oauth2
  verified: probed
  discovery:
    openid_configuration: https://williesreserve.com/.well-known/openid-configuration
    oauth_authorization_server: https://williesreserve.com/.well-known/oauth-authorization-server
    status: 200
  issuer: https://shopify.com/authentication/59591163950
  authorization_endpoint: https://shopify.com/authentication/59591163950/oauth/authorize
  token_endpoint: https://shopify.com/authentication/59591163950/oauth/token
  end_session_endpoint: https://shopify.com/authentication/59591163950/logout
  jwks_uri: https://shopify.com/authentication/59591163950/.well-known/jwks.json
  grant_types:
  - authorization_code
  - refresh_token
  - urn:ietf:params:oauth:grant-type:jwt-bearer
  response_types:
  - code
  token_endpoint_auth_methods:
  - client_secret_basic
  - client_secret_post
  pkce:
    supported: true
    code_challenge_methods:
    - S256
  id_token_signing_alg:
  - RS256
  subject_types:
  - public
  claims:
  - iss
  - sub
  - aud
  - exp
  - iat
  - nonce
  - sid
  - email
  - email_verified
  note: >-
    The issuer is a Shopify-hosted authentication tenant keyed to this store's shop id
    (59591163950); the discovery documents are served from williesreserve.com, which is why they
    are recorded here rather than treated as a third party's.
files:
  openid_configuration: well-known/willie-s-reserve-openid-configuration.json
  oauth_authorization_server: well-known/willie-s-reserve-oauth-authorization-server.json