generated: '2026-07-18'
method: searched
source: https://backbone.com/.well-known/openid-configuration
notes: >-
  Auth metadata published on backbone.com is the Shopify Customer Account OIDC /
  OAuth2 authorization server (issuer shopify.com/authentication/36563550340). It
  governs customer-account login and the Shopify Customer Account API + Customer
  Account MCP API. There is no first-party Backbone developer API; this is the
  real, published auth surface for the store.
summary:
  types: [oauth2, openIdConnect]
  oauth2_flows: [authorizationCode, refreshToken, jwt-bearer]
  pkce: [S256]
schemes:
- name: ShopifyCustomerAccountOIDC
  type: openIdConnect
  openIdConnectUrl: https://backbone.com/.well-known/openid-configuration
  issuer: https://shopify.com/authentication/36563550340
  authorization_endpoint: https://shopify.com/authentication/36563550340/oauth/authorize
  token_endpoint: https://shopify.com/authentication/36563550340/oauth/token
  end_session_endpoint: https://shopify.com/authentication/36563550340/logout
  jwks_uri: https://shopify.com/authentication/36563550340/.well-known/jwks.json
  grant_types: [authorization_code, refresh_token, 'urn:ietf:params:oauth:grant-type:jwt-bearer']
  token_endpoint_auth_methods: [client_secret_basic]
  id_token_signing_alg: [RS256]
  code_challenge_methods: [S256]
  scopes:
  - openid
  - email
  - customer-account-api:full
  - customer-account-mcp-api:full
  sources: [well-known/backbone-openid-configuration.json]