generated: '2026-07-18'
method: searched
source: https://barnandwillow.com/.well-known/openid-configuration
docs: https://shopify.dev/docs/api/customer
notes: >-
  Barn & Willow runs on Shopify. Customer-facing authentication is the Shopify
  Customer Account API, an OAuth 2.0 / OpenID Connect provider (issuer
  https://shopify.com/authentication/4558913). Agentic commerce over the UCP MCP
  endpoint uses the customer-account-mcp-api scope of the same provider.
summary:
  types: [oauth2, openIdConnect]
  oauth2_flows: [authorizationCode]
  pkce: S256
  token_endpoint_auth_methods: [client_secret_basic]
schemes:
- name: ShopifyCustomerAccountOIDC
  type: openIdConnect
  openIdConnectUrl: https://barnandwillow.com/.well-known/openid-configuration
  issuer: https://shopify.com/authentication/4558913
  authorization_endpoint: https://account.barnandwillow.com/authentication/oauth/authorize
  token_endpoint: https://account.barnandwillow.com/authentication/oauth/token
  end_session_endpoint: https://account.barnandwillow.com/authentication/logout
  jwks_uri: https://account.barnandwillow.com/authentication/.well-known/jwks.json
  response_types_supported: [code]
  grant_types_supported:
  - authorization_code
  - refresh_token
  - urn:ietf:params:oauth:grant-type:jwt-bearer
  code_challenge_methods_supported: [S256]
  id_token_signing_alg_values_supported: [RS256]
  sources: [well-known/barn-and-willow-openid-configuration.json]