First Horizon · Authentication Profile

First Horizon Authentication

Authentication

First Horizon secures its APIs with oauth2 across 1 declared security scheme, as derived from its OpenAPI definitions.

United StatesBankingFinancial ServicesTreasury ManagementAPI BankingACHPaymentsOpen BankingSuper-Regional BankFortune 500Wealth ManagementCapital Markets
Methods: oauth2 Schemes: 1 OAuth flows: API key in:

Security Schemes

OAuth2 oauth2
· flows:

Source

Authentication Profile

first-horizon-authentication.yml Raw ↑ 
generated: '2026-07-23'
method: searched
source: https://developers-test.firsthorizon.com/apis/v0/oauth
docs: https://developers-test.firsthorizon.com/apis/v0/oauth
note: >-
  No public OpenAPI is downloadable, so the securityScheme could not be derived
  mechanically. First Horizon's API Banking developer portal documents that all
  API Banking endpoints are authorized with OAuth 2.0 access tokens. The specific
  grant/flow, authorization and token URLs, and scope names are behind
  partner/relationship-gated onboarding and are not published anonymously; they
  are recorded here as unspecified rather than fabricated.
summary:
  types:
  - oauth2
  api_key_in: []
  oauth2_flows: []
schemes:
- name: OAuth2
  type: oauth2
  documented: true
  flows: []
  authorization_url: null
  token_url: null
  scopes: []
  applies_to:
  - Move Money Transfer v1
  - ACH Origination
  - Account Information
  - ABA Lookup v1
  - BIC Lookup v1
  sources:
  - https://developers-test.firsthorizon.com/apis/v0/oauth