generated: '2026-08-26'
method: probed
source: https://numitea.com/.well-known/openid-configuration
docs: https://shopify.dev/docs/agents/get-started/authentication
note: >-
  Derived from the OIDC/OAuth discovery documents Numi Tea serves on its own hosts
  and from the observed JSON-RPC auth challenge on the UCP MCP endpoint. Numi Tea
  publishes no developer-facing API auth documentation of its own; the normative
  reference is Shopify's agent authentication guide, which the server itself names
  in its error payload.

schemes:
  - id: customer_account_oauth2
    type: oauth2
    flow: authorization_code
    pkce: required
    pkce_methods: [S256]
    issuer: https://shopify.com/authentication/82698961207
    authorization_endpoint: https://account.numitea.com/authentication/oauth/authorize
    token_endpoint: https://account.numitea.com/authentication/oauth/token
    end_session_endpoint: https://account.numitea.com/authentication/logout
    jwks_uri: https://account.numitea.com/authentication/.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
      - client_secret_post
    id_token_signing_alg: RS256
    subject_types: [public]
    claims:
      - iss
      - sub
      - aud
      - exp
      - iat
      - nonce
      - sid
      - email
      - email_verified
    applies_to: Shopify customer accounts on account.numitea.com
  - id: openid_connect
    type: openIdConnect
    openid_connect_url: https://numitea.com/.well-known/openid-configuration
    note: Same authorization server as customer_account_oauth2; OIDC discovery is served on both numitea.com and account.numitea.com.
  - id: ucp_mcp_bearer
    type: http
    scheme: bearer
    bearer_format: JWT
    applies_to: https://numitea.com/api/ucp/mcp
    evidence: >-
      Unauthenticated tools/call returned JSON-RPC -32000 "AuthenticationRequired":
      "Unauthorized: A valid JWT is required to call <tool>." The RFC 9728 protected
      resource document at /.well-known/oauth-protected-resource declares
      bearer_methods_supported ["header"] and lists account.numitea.com plus the
      Shopify issuer as the authorization servers.

protected_resource:
  resource: https://numitea.com
  authorization_servers:
    - https://account.numitea.com
    - https://shopify.com/authentication/82698961207
  bearer_methods_supported: [header]
  spec: RFC 9728

anonymous_surface:
  - path: /api/ucp/mcp (initialize, tools/list)
    note: Capability discovery is anonymous; every tools/call requires a JWT.
  - path: /products.json
  - path: /collections/{handle}/products.json
  - path: /.well-known/ucp
  - path: /llms.txt

api_keys: false
api_keys_note: >-
  Numi Tea issues no API keys and operates no developer program. There is no
  signup, no key-provisioning surface and no self-serve credential on any Numi Tea
  host; agent credentials for the UCP endpoint are obtained through Shopify's agent
  authentication flow, not from Numi Tea.