generated: '2026-07-21'
method: searched
source: https://river.com/.well-known/openid-configuration, https://river.com/api
authentication:
  style: oauth2-bearer
  flow: authorization_code + PKCE (S256)
  token_endpoint: https://river.com/oauth2/token
  see: authentication/river-financial-authentication.yml
api_style:
  protocol: graphql
  endpoint: https://river.com/api
  notes: >-
    The data API is a single GraphQL endpoint; requests without a query document
    return {"errors":[{"message":"No query document supplied"}]}.
error_envelope:
  shape: graphql
  example: '{"errors":[{"message":"..."}]}'
  see: errors/
idempotency:
  supported: unknown
  notes: No public idempotency contract documented.
pagination:
  style: unknown
  notes: >-
    Not publicly documented; GraphQL connections are the likely mechanism but
    unverified.
rate_limiting:
  signaling: unknown
versioning:
  scheme: unknown
  see: lifecycle/river-financial-lifecycle.yml