Huntington Bancshares

Huntington Bancshares is a regional bank holding company that provides full-service consumer and business banking, insurance, investment, mortgage, equipment leasing, and commercial banking services. Huntington operates a developer portal at hnbdevportal.huntington.com built on Apigee X, offering API-first treasury management solutions with over 500 interfaces that process more than 10 million transaction events daily.

Huntington Bancshares publishes 3 API contracts indexed on the APIs.io network: Accounts API, Payments API, and Transactions API. Tagged areas include Banking, ERP Integration, Open Banking, Payments, and Treasury.

The Huntington Bancshares catalog on APIs.io includes 1 Spectral governance ruleset.

Huntington Bancshares’ developer surface includes authentication, developer portal, and 10 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

29.2/100 thin ▬ flat Agent 22/100 agent aware Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

AccessFreemiumSelf serve⚡ Free to try

1 published contract

Banking ERP Integration Open Banking Payments Treasury Fortune 1000

What this lets a business do 2

Business capabilities this provider's published APIs can perform, derived from its own contracts. Browse all capabilities →

Payments & Card Management

BC-1340

Payments

POST /payments

Deposits & Savings Management

BC-1330

Accounts

GET /accounts GET /accounts/{accountId}/balances

Kin Score

Kin Score How this is scored →
scored 2026-11-06 · rubric v0.27.0

Composite quality — 29.2/100 · thin

Contract Quality 9.5 / 19

Developer Ergonomics 3.2 / 15

Access Clarity 2.4 / 15

Operational Transparency 0.5 / 10

Contract Governance 1.2 / 9

Discoverability 5.0 / 8

Regulatory Posture 3.9 / 15

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 22/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 0 / 6

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 7 / 7

Typed Event Surface 0 / 6

Agent Skills 0 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 0 / 4

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Pagination 5 / 5

Distinct Operations 3 / 3

MCP Tool Quality 6 / 6

Regulatory Posture applies to this provider. Its tags matched the Banking & Open Finance regime, so Regulatory Posture carries 15 points of the composite. If this regime is wrong for your business, say so on your provider repo — the applicability map is public and we will correct it.

Create-or-Update Ergonomics applies to this provider. This API accepts writes, so it carries 10 points of the composite. It is scored from the published contracts themselves: whether a caller can create-or-update in one call, whether the write accepts a key the caller already holds, and whether the response says which branch ran. Without that, every write needs a search-and-branch in front of it, and the first time that check is skipped a duplicate record is created. Scored against the observed mean rather than raw — a provider at the catalog average is unchanged by this facet, not penalised by it.

The six quality facets above are damped to 75 points between them, because the conditional facet above carries the other 25. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 75% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

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<a href="https://apis.io/providers/huntington-bancshares/"><img src="https://apis.io/badge/huntington-bancshares/card.svg" alt="Huntington Bancshares on APIs.io — Kin Score by API Evangelist"></a>

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Agent readiness — checks not met, largest first (exact, from this profile):

MCP Server +12 pts — deployment.mode + probe verdict on the mcp/ manifest, not the pointer; an unprobed slug falls back to authorship
Idempotency +9 pts — OpenAPI mutating operations declare an idempotency key — a header, a request-body property, or a named de-duplication token whose own description says so (verified); else common[].type matches /idempoten/i (documented)
Stable Error Semantics +8 pts — OpenAPI $refs a shared error schema across 4xx/5xx responses (verified), else common[].type includes ErrorCatalog / ErrorCodes / DeclineCodes
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0
Request/Response Examples +7 pts — share of operations carrying request/response examples; else an Examples / Code Samples link
Registration Without a Human +6 pts — a `registration_endpoint` in the served RFC 8414 / OIDC discovery document

9 more unmet checks in the Agent Readiness table above.

Kin Score — facets with the most composite points still available (weight × headroom):

Access Clarity scores 15.8 — up to +16.8 composite points
Developer Ergonomics scores 21.4 — up to +15.7 composite points
Contract Quality scores 50.6 — up to +12.4 composite points

Each check links to what satisfies it. Publish the artifact, or tell us where it already lives, and the score moves on the next scoring run.

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from the provider profile at artifacts.apis.io/huntington-bancshares/apis.yml: open an issue on github.com/api-evangelist/huntington-bancshares to ask a question or point us at an artifact you publish. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

Markets this provider is in provisional

The Kin Score Market layer reads a provider inside its market: its position, and how deep its integrations go. Depth is only comparable within a position. Provisional and unweighted: not part of the Kin Score or agent readiness.

Market	Position	Depth	Registered MCP server	Declares compatibility
US Banks and Credit Unions (FDIC BankFind + NCUA insured credit unions)	regulated	36.4 (thin)	-	-

Registered MCP server and declares compatibility are report only — not weighted. Undeclared means we found nothing we can read, so there is no number: we never infer integrations.

Standards implemented 2

Standards this provider implements or carries. De facto ones are profiled and measured by the API Commons; formal ones come from the standards directory and are linked by the provider's own tags. The evidence column says how each claim was established — not that it was made.

OpenAPI

measured — observed by APIs.io (published)

OAuth 2.0

measured — observed by APIs.io (declared)

APIs 3

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

Huntington Bancshares Accounts API

Account information and balances

Huntington Bancshares Payments API

Payment initiation and management

Huntington Bancshares Transactions API

Transaction reporting and history

Open Collections 4

Open, tool-agnostic API collections (OpenAPI-derived and Bruno).

Huntington Bank Treasury Management Accounts API

OPEN COLLECTION

Huntington Bank Treasury Management Accounts Payments API

OPEN COLLECTION

Huntington Bank Treasury Management Accounts Transactions API

OPEN COLLECTION

Huntington Bank Treasury Management API

OPEN COLLECTION

Huntington Bancshares API pricing

Not yet checked against Huntington Bancshares's own pricing page. Compiled by API Evangelist on 2026-05-05 from hnbdevportal.huntington.com/; confirm before you rely on a figure. A free plan or tier is listed.

Plan	Price
Treasury Management API (Partner-Only) enterprise	—
Developer Portal (Documentation) freemium	Free

Plan details, limits and sources →

Rate limits

Treasury Management API (per partner): not publicly published; negotiated per Apigee API product requests per minute
Spike arrest: not publicly published; Apigee spike-arrest policy requests per second

Compiled by API Evangelist, not yet checked against Huntington Bancshares's documentation. Rate-limit details →

Pricing Plans 1

Published pricing tiers and plan structures.

Huntington Bancshares Plans Pricing

2 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Huntington Bancshares Rate Limits

2 limits

RATE LIMITS

Service Levels 1

Uptime the provider promises or reports, as SLA4OAI. Read from its own pages; APIs.io runs no monitors.

Huntington Bancshares

SLA

FinOps 1

Cost, billing, and metering signals for API financial operations.

Huntington Bancshares Finops

FINOPS

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

Huntington Bancshares API Rules

54 rules · 52 errors 1 warnings 1 info

SPECTRAL

Security Posture 2

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

Huntington Bancshares Authentication

oauth2 · 1 scheme

SECURITY

Huntington Bancshares Domain Security

TLSv1.3 · DMARC

SECURITY

Scopes 1

OAuth scopes governing access to this provider's APIs.

Huntington Bancshares Scopes

3 scopes · clientCredentials

3 scopes

SCOPES

Agentic Access 1

Recommended x-agentic-access execution contracts for AI agents.

Huntington Bancshares Agentic Access

4 operations · 1 acting

AGENTIC

Press 5

Recent news and press coverage referencing this provider.

Huntington Launches Huntington Heads Up® with AI to ...

Huntington Bank Announces Treasury Management ...

BANK INVESTMENT AIMS TO IMPROVE REVENUE ...

Veuu Announces Partnership with Huntington Bancshares ...

Huntington Launches Huntington Heads Up® with AI to ...

Resources

Get Started 1

Portal, sign-up, and the first successful call

Portal

Portal

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

Access & Security 3

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Authentication

Authentication

OAuthScopes

OAuthScopes

Operate 1

Status, limits, changes, and where to get help

RateLimits

RateLimits

Commercial 3

Pricing, plans, and the legal terms of use

Plans

Plans

FinOps

FinOps

PrivacyPolicy

PrivacyPolicy

Company 2

The organization behind the API

LinkedIn

Website

Website

Other 1

Properties that don't map to a standard resource type

CapabilityMap

CapabilityMap

Source (apis.yml)

aid: huntington-bancshares
name: Huntington Bancshares
description: Huntington Bancshares is a regional bank holding company that provides full-service consumer and business banking,
  insurance, investment, mortgage, equipment leasing, and commercial banking services. Huntington operates a developer portal
  at hnbdevportal.huntington.com built on Apigee X, offering API-first treasury management solutions with over 500 interfaces
  that process more than 10 million transaction events daily.
url: https://raw.githubusercontent.com/api-evangelist/huntington-bancshares/refs/heads/main/apis.yml
type: Index
deliveryModel:
  model: unknown
  open_source: false
  commercial: false
  callable_host: true
  label: Delivery model not determined — needs a product licence on record
  confidence: low
  source:
  - openapi
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: freemium
  onboarding: self-serve
  trial: false
  try_now: true
  public: false
  gated: none
  gated_source:
  - onboarding
  label: Freemium · Self-serve signup
  confidence: medium
  source:
  - plans
  - authentication
  - security
  generated: '2026-11-06'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/huntington-bancshares.png
tags:
- Banking
- ERP Integration
- Open Banking
- Payments
- Treasury
- Fortune 1000
created: '2026-03-21'
modified: '2026-05-19'
specificationVersion: '0.23'
apis:
- aid: huntington-bancshares:huntington-bancshares-accounts-api
  name: Huntington Bancshares Accounts API
  description: Account information and balances
  humanURL: https://hnbdevportal.huntington.com/
  baseURL: https://api.huntington.com
  tags:
  - Account
  tags_raw:
  - Accounts
  properties:
  - type: OpenAPI
    url: openapi/huntington-bancshares-accounts-api-openapi.yml
  - type: Portal
    url: https://hnbdevportal.huntington.com/
- aid: huntington-bancshares:huntington-bancshares-payments-api
  name: Huntington Bancshares Payments API
  description: Payment initiation and management
  humanURL: https://hnbdevportal.huntington.com/
  baseURL: https://api.huntington.com
  tags:
  - Payments
  properties:
  - type: OpenAPI
    url: openapi/huntington-bancshares-payments-api-openapi.yml
  - type: Portal
    url: https://hnbdevportal.huntington.com/
- aid: huntington-bancshares:huntington-bancshares-transactions-api
  name: Huntington Bancshares Transactions API
  description: Transaction reporting and history
  humanURL: https://hnbdevportal.huntington.com/
  baseURL: https://api.huntington.com
  tags:
  - Transaction
  tags_raw:
  - Transactions
  properties:
  - type: OpenAPI
    url: openapi/huntington-bancshares-transactions-api-openapi.yml
  - type: Portal
    url: https://hnbdevportal.huntington.com/
common:
- type: Plans
  url: plans/huntington-bancshares-plans-pricing.yml
- type: RateLimits
  url: rate-limits/huntington-bancshares-rate-limits.yml
- type: FinOps
  url: finops/huntington-bancshares-finops.yml
- type: CapabilityMap
  url: capabilities/huntington-bancshares-capability-edges.yml
  name: Huntington Bancshares Business Capability Map
- type: AgenticAccess
  url: agentic-access/huntington-bancshares-agentic-access.yml
- type: DomainSecurity
  url: security/huntington-bancshares-domain-security.yml
- type: Authentication
  url: authentication/huntington-bancshares-authentication.yml
- type: OAuthScopes
  url: scopes/huntington-bancshares-scopes.yml
- type: LinkedIn
  url: https://www.linkedin.com/company/huntington-national-bank
- type: Portal
  url: https://hnbdevportal.huntington.com/
- type: Website
  url: https://www.huntington.com/
- type: PrivacyPolicy
  url: https://www.huntington.com/privacy
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

Huntington Bancshares API — frequently asked questions

Does Huntington Bancshares have an API?

Yes. APIs.io lists 3 APIs from Huntington Bancshares, including Huntington Bancshares Accounts API, Huntington Bancshares Payments API and Huntington Bancshares Transactions API.

Is there an OpenAPI specification for the Huntington Bancshares API?

Yes. APIs.io indexes 3 OpenAPI specifications for Huntington Bancshares, each linked for download from this page.

How do I authenticate with the Huntington Bancshares API?

Huntington Bancshares documents its authentication (oauth2 · 1 scheme). The details are profiled on APIs.io as Huntington Bancshares Authentication.

How much does the Huntington Bancshares API cost?

APIs.io lists 2 pricing plans for Huntington Bancshares, with each plan's price, limits and inclusions under Pricing on this page.

Is the Huntington Bancshares API ready for AI agents?

Huntington Bancshares has a Kin Score of 29.2 out of 100 (thin) and an Agent Readiness score of 22.4 (agent-aware), scored by API Evangelist on 2026-11-06.

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