First Horizon

First Horizon Corporation is a Fortune 500 financial services holding company headquartered in Memphis, Tennessee. Through First Horizon Bank it provides commercial, private, consumer, and mortgage banking, wealth management, and capital markets services across the southern United States. First Horizon operates a real API Banking developer portal for Treasury Management clients, exposing RESTful products for money movement, ACH origination, real-time account information, and routing-number lookups, secured with OAuth 2.0 and a sandbox for build-and-test integration. Onboarding is partner/relationship gated and no OpenAPI/Swagger specifications are publicly downloadable — this repository captures the documented API surface honestly, humanURL-only.

First Horizon publishes 5 APIs on the APIs.io network. Tagged areas include United States, Banking, Financial Services, Treasury Management, and API Banking.

First Horizon’s developer surface includes documentation, authentication, and 8 more developer resources.

17.8/100 emerging ▬ flat Agent 10/100 human only Full breakdown ↓
scored 2026-07-27 · rubric v0.5
5 APIs
United StatesBankingFinancial ServicesTreasury ManagementAPI BankingACHPaymentsOpen BankingSuper-Regional BankFortune 500Wealth ManagementCapital Markets

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-07-27 · rubric v0.5
Composite quality — 17.8/100 · emerging
Contract Quality 0.0 / 25
Developer Ergonomics 5.7 / 20
Commercial Clarity 0.0 / 20
Operational Transparency 0.0 / 13
Governance 0.0 / 12
Discoverability 8.8 / 10
Agent readiness — 10/100 · human only
Machine-Readable Contract 0 / 18
Agentic Access Contract 0 / 15
MCP Server 0 / 12
Machine-Readable Auth 10 / 10
Idempotency 0 / 9
Stable Error Semantics 0 / 8
Request/Response Examples 0 / 7
Rate-Limit Signaling 0 / 7
Typed Event Surface 0 / 6
Agent Skills 0 / 5
Well-Known Catalog 0 / 4
Consent & Bot Identity 0 / 3
Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/first-horizon: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

APIs 5

Individual APIs this provider publishes, each with its own machine-readable definition.

Move Money Transfer v1

Move Money Transfer is First Horizon's RESTful payments-initiation API for Treasury Management clients, used to originate and manage funds transfers programmatically from an ERP...

ACH Origination

The ACH Origination API lets First Horizon Treasury Management clients originate ACH transactions directly from their ERP or accounting system via a RESTful interface, paired wi...

Account Information

The Account Information API provides Treasury Management clients real-time visibility into account information, balances, and transactions through a RESTful interface, for recon...

ABA Lookup v1

ABA Lookup is a RESTful utility endpoint on First Horizon's API Banking platform that validates and resolves U.S. ABA routing transit numbers, supporting payment-instruction val...

BIC Lookup v1

BIC Lookup is a RESTful utility endpoint on First Horizon's API Banking platform that validates and resolves SWIFT/BIC codes, supporting the validation of international payment ...

Security Posture 2

Authentication, domain security, vulnerability disclosure, and trust-center signals.

First Horizon Authentication

oauth2 · 1 scheme

SECURITY

First Horizon Domain Security

TLSv1.3 · HSTS · DNSSEC · DMARC

SECURITY

Resources

Get Started 1

Portal, sign-up, and the first successful call

Documentation 1

Reference material describing how the API behaves

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

Design & Contract 1

Pagination, idempotency, versioning, errors, and events

Access & Security 3

Authentication, authorization, and security posture

Company 2

The organization behind the API

Other 1

Properties that don't map to a standard resource type

Source (apis.yml)

apis.yml Raw ↑
aid: first-horizon
name: First Horizon
kind: company
type: Index
description: First Horizon Corporation is a Fortune 500 financial services holding company headquartered in Memphis, Tennessee.
  Through First Horizon Bank it provides commercial, private, consumer, and mortgage banking, wealth management, and capital
  markets services across the southern United States. First Horizon operates a real API Banking developer portal for Treasury
  Management clients, exposing RESTful products for money movement, ACH origination, real-time account information, and routing-number
  lookups, secured with OAuth 2.0 and a sandbox for build-and-test integration. Onboarding is partner/relationship gated and
  no OpenAPI/Swagger specifications are publicly downloadable — this repository captures the documented API surface honestly,
  humanURL-only.
accessModel:
  pricing: unknown
  onboarding: partner
  trial: false
  try_now: false
  public: false
  label: Partner onboarding · Treasury API Banking (sandbox + OAuth2)
  confidence: medium
  source:
  - developer-portal
  generated: '2026-07-23'
  method: researched
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/first-horizon.png
access: 3rd-Party
created: '2026-05-04'
modified: '2026-07-23'
position: Consumer
tags:
- United States
- Banking
- Financial Services
- Treasury Management
- API Banking
- ACH
- Payments
- Open Banking
- Super-Regional Bank
- Fortune 500
- Wealth Management
- Capital Markets
url: https://raw.githubusercontent.com/api-evangelist/first-horizon/refs/heads/main/apis.yml
specificationVersion: '0.19'
apis:
- aid: first-horizon:move-money-transfer-v1
  name: Move Money Transfer v1
  description: Move Money Transfer is First Horizon's RESTful payments-initiation API for Treasury Management clients, used
    to originate and manage funds transfers programmatically from an ERP, accounting, or treasury platform. Requests are authorized
    with OAuth 2.0 access tokens and can be exercised in the portal sandbox before promotion to a live customer environment.
    No public OpenAPI specification is downloadable; the endpoint is documented in HTML on the API Banking developer portal.
  humanURL: https://developers-test.firsthorizon.com/apis/v1/movemoney/transfer
  tags:
  - Payments
  - Money Movement
  - Treasury Management
  - United States
  properties:
  - type: Documentation
    url: https://developers-test.firsthorizon.com/apis/v1/movemoney/transfer
  - type: Authentication
    url: https://developers-test.firsthorizon.com/apis/v0/oauth
  - type: DeveloperPortal
    url: https://developers-test.firsthorizon.com/
- aid: first-horizon:ach-origination
  name: ACH Origination
  description: The ACH Origination API lets First Horizon Treasury Management clients originate ACH transactions directly
    from their ERP or accounting system via a RESTful interface, paired with an ACH Tokenization Solution that replaces sensitive
    bank account numbers with tokens to support security and NACHA compliance. Authorized with OAuth 2.0 and available in
    a sandbox for build-and-test. Documented in HTML on the developer portal; no public OpenAPI specification is downloadable.
  humanURL: https://developers-test.firsthorizon.com/solutions/ach-tokenization
  tags:
  - ACH
  - Payments
  - Tokenization
  - NACHA
  - United States
  properties:
  - type: Documentation
    url: https://developers-test.firsthorizon.com/solutions/ach-tokenization
  - type: Authentication
    url: https://developers-test.firsthorizon.com/apis/v0/oauth
  - type: DeveloperPortal
    url: https://developers-test.firsthorizon.com/
- aid: first-horizon:account-information
  name: Account Information
  description: The Account Information API provides Treasury Management clients real-time visibility into account information,
    balances, and transactions through a RESTful interface, for reconciliation and cash-position workflows inside a client's
    own platform. Authorized with OAuth 2.0 and exercisable in the portal sandbox. Documented in HTML on the API Banking developer
    portal; no public OpenAPI specification is downloadable.
  humanURL: https://developers-test.firsthorizon.com/get-started
  tags:
  - Account Information
  - Balances
  - Transactions
  - Open Banking
  - United States
  properties:
  - type: Documentation
    url: https://developers-test.firsthorizon.com/get-started
  - type: Authentication
    url: https://developers-test.firsthorizon.com/apis/v0/oauth
  - type: DeveloperPortal
    url: https://developers-test.firsthorizon.com/
- aid: first-horizon:aba-lookup-v1
  name: ABA Lookup v1
  description: ABA Lookup is a RESTful utility endpoint on First Horizon's API Banking platform that validates and resolves
    U.S. ABA routing transit numbers, supporting payment-instruction validation ahead of ACH and wire origination. Authorized
    with OAuth 2.0. Documented in HTML on the developer portal; no public OpenAPI specification is downloadable.
  humanURL: https://developers-test.firsthorizon.com/apis/v1/lookups/aba
  tags:
  - Lookups
  - Routing Numbers
  - Payments
  - United States
  properties:
  - type: Documentation
    url: https://developers-test.firsthorizon.com/apis/v1/lookups/aba
  - type: Authentication
    url: https://developers-test.firsthorizon.com/apis/v0/oauth
  - type: DeveloperPortal
    url: https://developers-test.firsthorizon.com/
- aid: first-horizon:bic-lookup-v1
  name: BIC Lookup v1
  description: BIC Lookup is a RESTful utility endpoint on First Horizon's API Banking platform that validates and resolves
    SWIFT/BIC codes, supporting the validation of international payment instructions. Authorized with OAuth 2.0. Documented
    in HTML on the developer portal; no public OpenAPI specification is downloadable.
  humanURL: https://developers-test.firsthorizon.com/apis/v1/lookups/bic
  tags:
  - Lookups
  - SWIFT
  - BIC
  - International Payments
  - United States
  properties:
  - type: Documentation
    url: https://developers-test.firsthorizon.com/apis/v1/lookups/bic
  - type: Authentication
    url: https://developers-test.firsthorizon.com/apis/v0/oauth
  - type: DeveloperPortal
    url: https://developers-test.firsthorizon.com/
common:
- type: DomainSecurity
  url: security/first-horizon-domain-security.yml
- type: Website
  url: https://www.firsthorizon.com
- type: DeveloperPortal
  url: https://developers-test.firsthorizon.com/
- type: Documentation
  url: https://developers-test.firsthorizon.com/get-started
- type: ProductPage
  url: https://www.firsthorizon.com/Corporate/Products-and-Services/Treasury-Management/API-Banking-Solutions
- type: Authentication
  url: https://developers-test.firsthorizon.com/apis/v0/oauth
- type: LinkedIn
  url: https://www.linkedin.com/company/first-horizon-bank
- type: Authentication
  url: authentication/first-horizon-authentication.yml
- type: Conformance
  url: conformance/first-horizon-conformance.yml
- type: LLMsTxt
  url: llms/first-horizon-llms.txt
maintainers:
- FN: API Evangelist
  email: kin@apievangelist.com
  url: https://apievangelist.com