Huntington Bancshares Payments API

Payment initiation and management

Documentation GitHub OpenAPI

Specifications

https://raw.githubusercontent.com/api-evangelist/huntington-bancshares/refs/heads/main/openapi/huntington-bancshares-payments-api-openapi.yml

Other Resources

🔗

Portal

https://hnbdevportal.huntington.com/

Work with this as data

Every API here is available over the APIs.io API and to AI agents over MCP.

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

Tools for apis

7 MCP tools reach this

find_apisBrowse and filter every API in the catalog.
get_api_artifactsOne API's artifacts, grouped by type.
get_openapiThe primary OpenAPI for this API.
find_similar_apisAPIs that look like this one.
apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
resolveTurn a domain, URL or GitHub org into the provider it belongs to.
find_cohortsEvery scored population of providers in the catalog.

All 92 tools

Call it yourself

curl for this page

This API

curl "https://apis.io/api/v1/apis/huntington-bancshares-payments-api"

All apis

curl "https://apis.io/api/v1/apis?limit=25"

Discovery needs no key. Ratings and market analysis are Pro.

Get an API key

Free tier, no email required.

GitHub Google LinkedIn

A second provider on the same verified email joins the account you already have.

OpenAPI Specification

openapi: 3.1.0
info:
  title: Huntington Bank Treasury Management Accounts Payments API
  description: The Huntington Bank Treasury Management API is part of Huntington's Treasury Management Connectivity Ecosystem, an API-first platform that enables businesses to unify banking, ERP, and financial tools. Built on Apigee X, the platform supports over 500 interfaces and processes more than 10 million transaction events daily, providing real-time visibility into treasury operations, automated payment processing, and seamless integration with enterprise systems.
  version: '1.0'
  contact:
    name: Huntington Bank Developer Support
    url: https://hnbdevportal.huntington.com/
servers:
- url: https://api.huntington.com/v1
  description: Production
security:
- oauth2: []
tags:
- name: Payments
  description: Payment initiation and management
paths:
  /payments:
    post:
      operationId: initiatePayment
      summary: Initiate a payment
      description: Initiates a payment transaction from a treasury account.
      tags:
      - Payments
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/PaymentRequest'
      responses:
        '201':
          description: Payment initiated successfully
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/PaymentResponse'
        '400':
          description: Bad request
components:
  schemas:
    PaymentResponse:
      type: object
      properties:
        paymentId:
          type: string
        status:
          type: string
        createdAt:
          type: string
          format: date-time
    PaymentRequest:
      type: object
      properties:
        fromAccountId:
          type: string
        toAccountId:
          type: string
        amount:
          type: number
        currency:
          type: string
        paymentDate:
          type: string
          format: date
        memo:
          type: string
  securitySchemes:
    oauth2:
      type: oauth2
      flows:
        clientCredentials:
          tokenUrl: https://api.huntington.com/oauth/token
          scopes:
            accounts:read: Read account data
            transactions:read: Read transactions
            payments:write: Initiate payments
externalDocs:
  description: Huntington Bank Developer Portal
  url: https://hnbdevportal.huntington.com/