generated: '2026-07-18'
method: searched
source:
  - https://mcp.cumbuca.com/.well-known/oauth-protected-resource
  - https://idc.cumbuca.com/realms/cumbuca-mcp/.well-known/oauth-authorization-server
  - https://www.cumbuca.com/en/
summary:
  types: [oauth2, openIdConnect, mutualTLS]
  oauth2_flows: [authorizationCode]
  api_key_in: []
schemes:
  - name: OpenFinanceMTLS
    type: mutualTLS
    description: >
      The core regulated proxy forwards cryptographically signed, mutual-TLS
      requests between client infrastructure and the Bacen / Open Finance Brasil
      ecosystem using the client's (or Cumbuca's) certificates. Certificate swap
      when a client obtains its own Payment Institution license (zero lock-in).
    sources: [https://www.cumbuca.com/en/]
  - name: OpenIDConnect
    type: openIdConnect
    description: >
      The Open Finance Data MCP server is an OAuth 2.0 / OIDC protected resource.
      Authorization server is a Keycloak realm (idc.cumbuca.com/realms/cumbuca-mcp).
      Access tokens are mTLS certificate-bound (RFC 8705).
    openIdConnectUrl: https://idc.cumbuca.com/realms/cumbuca-mcp/.well-known/openid-configuration
    authorizationUrl: https://idc.cumbuca.com/realms/cumbuca-mcp/protocol/openid-connect/auth
    tokenUrl: https://idc.cumbuca.com/realms/cumbuca-mcp/protocol/openid-connect/token
    scopes_supported: [openid, profile, offline_access, open-finance]
    mtls_bound_tokens: true
    sources: [https://mcp.cumbuca.com/.well-known/oauth-protected-resource]
  - name: OpenFinanceConsent
    type: oauth2
    description: >
      End-user data access follows the Open Finance Brasil consent flow: the user
      authenticates at their bank by CPF + biometric or banking PIN (no password
      sharing) and grants a scoped consent that Cumbuca relays.
    sources: [https://www.cumbuca.com/en/launchweek/of-data-mcp/]