Fin · Authentication Profile

Fin Authentication

Authentication

Fin secures its APIs with http and oauth2 across 1 declared security scheme, as derived from its OpenAPI definitions. OAuth 2.0 is offered via the clientCredentials flow(s).

CompanyPaymentsCross-Border PaymentsStablecoinsFintechMoney MovementForeign ExchangeVirtual AccountsCrypto
Methods: http, oauth2 Schemes: 1 OAuth flows: clientCredentials API key in:

Security Schemes

bearerAuth http
scheme: bearer

Source

Authentication Profile

Raw ↑ 
generated: '2026-07-19'
method: searched
source: openapi/fin-openapi-original.yml
docs: https://developer.fin.com/api-reference/authentication/issue-a-token
summary:
  types:
  - http
  - oauth2
  api_key_in: []
  oauth2_flows:
  - clientCredentials
  notes: >-
    The OpenAPI declares a single http bearer (JWT) security scheme applied to
    all operations. Per the docs the bearer token is obtained via an OAuth 2.0
    client-credentials flow with an enhanced refresh mechanism: exchange client
    credentials at POST /v1/oauth/token to receive an access token + refresh
    token, then renew via POST /v1/oauth/refresh-token without re-authenticating.
schemes:
- name: bearerAuth
  type: http
  scheme: bearer
  bearerFormat: JWT
  description: Bearer token authentication. Obtain token from the Issue a Token endpoint.
  sources:
  - openapi/fin-openapi-original.yml
flows:
- flow: clientCredentials
  token_endpoint: https://api.fin.com/v1/oauth/token
  refresh_endpoint: https://api.fin.com/v1/oauth/refresh-token
  sandbox_token_endpoint: https://sandbox.api.fin.com/v1/oauth/token
  docs: https://developer.fin.com/api-reference/authentication/issue-a-token

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