KeyCorp website screenshot

KeyCorp

KeyCorp (KeyBank) is one of the nation's largest bank-based financial services companies and a super-regional commercial bank headquartered in Cleveland, Ohio, providing deposit, lending, cash management, treasury, and investment services to individuals, small businesses, and middle-market companies. The KeyBank Developer Portal at developer.key.com publishes a self-service catalog of commercial and embedded-banking APIs covering account information reporting, ACH origination, RTP and wire payments, account validation, ACH/wire/RTP inquiry, check services, and payment event webhooks. Each product ships a downloadable OpenAPI 3.1 definition and is secured with OAuth2 bearer tokens, mutual TLS client certificates, and FAPI-style interaction-id headers.

KeyCorp publishes 18 API contracts indexed on the APIs.io network, including Account Information API, Account Transactions API, Accounts API, and 15 more. Tagged areas include Banking, Commercial Banking, Financial Services, Fortune 500, and Payments.

The KeyCorp catalog on APIs.io includes 1 event-driven AsyncAPI specification and 1 Spectral governance ruleset.

KeyCorp’s developer surface includes getting-started guide, signup flow, authentication, sandbox, documentation, support, and 24 more developer resources.

🌐 Visit website📡 Profile data on GitHub
42.1/100 developing ▬ flat Agent 35/100 agent ready saas Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →
AccessPaid
9 published contracts 4 Agent Skills
BankingCommercial BankingFinancial ServicesFortune 500PaymentsUnited StatesSuper-Regional BankTreasury ManagementEmbedded BankingACHReal-Time PaymentsWire Transfers

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
ACH Payment OriginationACH TransactionsInitiateParticipantRTPStopPayments
POST /ach/payments/v1/ccd POST /ach/payments/v1/ppd POST /rtp/v1/payment/initiate POST /rtp/v1/payment/validate
Treasury Management
BC-210
Account Transactions

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-11-06 · rubric v0.27.0
Composite quality — 42.1/100 · developing
Contract Quality 11.8 / 19
Developer Ergonomics 7.1 / 15
Access Clarity 4.3 / 15
Operational Transparency 1.3 / 10
Contract Governance 1.6 / 9
Discoverability 5.9 / 8
Regulatory Posture 3.2 / 15
Create-or-Update Ergonomics 0.0 / 10
Agent readiness — 35/100 · agent ready
Machine-Readable Contract 18 / 18
Agentic Access Contract 10 / 10
Documented Reversibility 6 / 6
MCP Server 0 / 12
Machine-Readable Auth 10 / 10
Idempotency 9 / 9
Stable Error Semantics 8 / 8
Request/Response Examples 7 / 7
Rate-Limit Signaling 7 / 7
Typed Event Surface 6 / 6
Agent Skills 5 / 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 0 / 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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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
  • A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0
  • Registration Without a Human +6 pts — a `registration_endpoint` in the served RFC 8414 / OIDC discovery document
  • Delegated User Identity +6 pts — a served discovery document listing authorization_code in grant_types_supported (served), else an oauth2 authorizationCode flow or openIdConnect declared in an OpenAPI (documented)
  • Protected Resource Metadata +5 pts — a served /.well-known/oauth-protected-resource carrying `resource` (documented), and naming its authorization_servers (verified)
  • Agentic Commerce Well-Known Document +5 pts — a parsing /.well-known/ucp.json or acp.json declaring a version and at least one service, OR (0.27) a live x402 payment challenge from _data/x402-adoption.json — `self` when its endpoints are on the provider's own domain, `platform` when they are on a vendor's
4 more unmet checks in the Agent Readiness table above.
Kin Score — facets with the most composite points still available (weight × headroom):
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/keycorp/apis.yml: open an issue on github.com/api-evangelist/keycorp 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.

MarketPositionDepthRegistered MCP serverDeclares compatibility
US Banks and Credit Unions (FDIC BankFind + NCUA insured credit unions) regulated 19.2 (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 3

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.

NACHA
tagged — the provider's own APIs.json carries the standard as a tag; implementation not verified
OpenAPI
measured — observed by APIs.io (published)
Mutual TLS
measured — observed by APIs.io (declared)

APIs 18

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

KeyCorp Account Information API

The Account Information API from KeyCorp — 2 operation(s) for account information.

KeyCorp Account Transactions API

The Account Transactions API from KeyCorp — 2 operation(s) for account transactions.

KeyCorp Accounts API

The Accounts API from KeyCorp — 1 operation(s) for accounts.

KeyCorp ACH API

The ACH API from KeyCorp — 1 operation(s) for ach.

KeyCorp ACH Payment Origination API

The ACH Payment Origination API from KeyCorp — 6 operation(s) for ach payment origination.

KeyCorp ACH Payment Request Inquiry API

The ACH Payment Request Inquiry API from KeyCorp — 2 operation(s) for ach payment request inquiry.

KeyCorp ACH Transactions API

ACH Inquiry functions to list and retrieve ACH transaction details

KeyCorp Image Check API

List check images

KeyCorp Initiate API

Send a payment.

KeyCorp Participant API

Look up a RTP participating banks.

KeyCorp RTP API

RTP functions to list and retrieve real-time payment details

KeyCorp Stop Payments API

Place new stop payments

KeyCorp Undo ACH Payment Request API

The Undo ACH Payment Request API from KeyCorp — 1 operation(s) for undo ach payment request.

KeyCorp Validate API

Perform validation checks for a payment transaction.

KeyCorp Wire API

Wire Inquiry functions to list wires and retrieve wire details

KeyCorp Wire/RTP v1 API

The Wire/RTP v1 API from KeyCorp — 1 operation(s) for wire/rtp v1.

KeyCorp Wire/RTP v2 API

The Wire/RTP v2 API from KeyCorp — 1 operation(s) for wire/rtp v2.

KeyCorp Health Check API

The Health Check API from KeyCorp — 7 operation(s) for health check.

Scroll for all 18

Open Collections 10

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

Account Validation v2 API

OPEN COLLECTION

ACH Inquiry

OPEN COLLECTION

ACH Origination

OPEN COLLECTION

Check Services

OPEN COLLECTION

Commercial Accounts Reporting

OPEN COLLECTION

RTP Inquiry API

OPEN COLLECTION

RTP and Wire Payments API

OPEN COLLECTION

Webhooks

OPEN COLLECTION

Wire Inquiry

OPEN COLLECTION

KeyBank Commercial Banking APIs

OPEN COLLECTION

Scroll for all 10

Agent Skills 4

Packaged agent skills for driving this provider's APIs from an AI assistant.

Originate and track an ACH payment

AGENT SKILL

Report on commercial account activity

AGENT SKILL

Send an RTP or Wire payment

AGENT SKILL

Validate an account before payment

AGENT SKILL

KeyCorp API pricing

Not yet checked against KeyCorp's own pricing page. Compiled by API Evangelist on 2026-05-05 from developer.key.com/; confirm before you rely on a figure.

PlanPrice
Commercial Banking Customer enterprise —

Plan details, limits and sources →

Rate limits

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

Pricing Plans 1

Published pricing tiers and plan structures.

Keycorp Plans Pricing

1 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Keycorp Rate Limits

1 limits

RATE LIMITS

Service Levels 1

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

KeyCorp

SLA

FinOps 1

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

Keycorp Finops

FINOPS

Event Specifications 1

AsyncAPI definitions for this provider's event-driven and streaming APIs.

Keycorp Payment Alerts Webhooks

ASYNCAPI

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

KeyCorp API Rules

68 rules · 46 errors 13 warnings 9 info

SPECTRAL

OpenAPI Overlays 9

Overlays applied on top of this provider's contracts. Each card says who wrote it: a document the provider publishes, or one API Evangelist derived or generated.

Keycorp Account Validation Overlay

1 action · update · keycorp-account-validation-openapi.yml

DERIVED

Keycorp Ach Inquiry Overlay

1 action · update · keycorp-ach-inquiry-openapi.yml

DERIVED

Keycorp Ach Originations Overlay

1 action · update · keycorp-ach-originations-openapi.yml

DERIVED

Keycorp Check Services Overlay

1 action · update · keycorp-check-services-openapi.yml

DERIVED

Keycorp Commercial Accounts Reporting Overlay

1 action · update · keycorp-commercial-accounts-reporting-openapi.yml

DERIVED

Keycorp Rtp Inquiry Overlay

1 action · update · keycorp-rtp-inquiry-openapi.yml

DERIVED

Keycorp Rtp Wire Payments Overlay

1 action · update · keycorp-rtp-wire-payments-openapi.yml

DERIVED

Keycorp Webhooks Overlay

1 action · update · keycorp-webhooks-openapi.yml

DERIVED

Keycorp Wire Inquiry Overlay

1 action · update · keycorp-wire-inquiry-openapi.yml

DERIVED

Scroll for all 9

Security Posture 2

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

Keycorp Authentication

http/mutualTLS · 2 schemes

SECURITY

Keycorp Domain Security

TLSv1.3 · DNSSEC · DMARC

SECURITY

Agentic Access 1

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

Keycorp Agentic Access

37 operations · 17 acting · 1 human-in-the-loop

37 operations · 17 acting

AGENTIC

Press 5

Recent news and press coverage referencing this provider.

Google Cloud, KeyBank, and Deloitte today announced ...

KeyCorp (KEY) Latest Press Releases & Corporate News

KeyCorp bulks up investment banking with purchase of UK ...

Keycorp AI Profile: Capabilities, IP and People

Yesterday, we announced KeyCorp's First Quarter 2026 ...

Resources

Get Started 4

Portal, sign-up, and the first successful call

GettingStarted
GettingStarted
 Signup
Signup
 Sandbox
Sandbox
 DeveloperPortal
DeveloperPortal

Documentation 1

Reference material describing how the API behaves

Documentation
Documentation

Agent Surfaces 5

MCP servers, agent skills, and machine-readable catalogs

AgentSkill
AgentSkill
 AgenticAccess
AgenticAccess
 X-MCPServerCandidate
X-MCPServerCandidate
 AgentSkills
AgentSkills
 LLMsTxt
LLMsTxt

Design & Contract 7

Pagination, idempotency, versioning, errors, and events

Conventions
Conventions
 Idempotency
Idempotency
 ErrorCatalog
ErrorCatalog
 Conformance
Conformance
 Lifecycle
Lifecycle
 DataModel
DataModel
 Webhooks
Webhooks

Scroll for all 7

Build 1

SDKs, sample code, and the tooling you integrate with

ToolCrosswalk
ToolCrosswalk

Access & Security 2

Authentication, authorization, and security posture

DomainSecurity
DomainSecurity
 Authentication
Authentication

Operate 2

Status, limits, changes, and where to get help

RateLimits
RateLimits
 Support
Support

Commercial 3

Pricing, plans, and the legal terms of use

Plans
Plans
 FinOps
FinOps
 TermsOfService
TermsOfService

Company 3

The organization behind the API

Website
Website
 Website
Website
 LinkedIn
LinkedIn

Other 2

Properties that don't map to a standard resource type

CapabilityMap
CapabilityMap
 Overlay
Overlay

Source (apis.yml)

apis.yml Raw ↑ 
aid: keycorp
name: KeyCorp
kind: company
type: Index
description: KeyCorp (KeyBank) is one of the nation's largest bank-based financial services companies and a super-regional
  commercial bank headquartered in Cleveland, Ohio, providing deposit, lending, cash management, treasury, and investment
  services to individuals, small businesses, and middle-market companies. The KeyBank Developer Portal at developer.key.com
  publishes a self-service catalog of commercial and embedded-banking APIs covering account information reporting, ACH origination,
  RTP and wire payments, account validation, ACH/wire/RTP inquiry, check services, and payment event webhooks. Each product
  ships a downloadable OpenAPI 3.1 definition and is secured with OAuth2 bearer tokens, mutual TLS client certificates, and
  FAPI-style interaction-id headers.
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: true
  label: Hosted service · you call their endpoint
  confidence: high
  source:
  - openapi
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: paid
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Paid
  confidence: medium
  source:
  - plans
  - authentication
  - security
  generated: '2026-11-06'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/keycorp.png
tags:
- Banking
- Commercial Banking
- Financial Services
- Fortune 500
- Payments
- United States
- Super-Regional Bank
- Treasury Management
- Embedded Banking
- ACH
- Real-Time Payments
- Wire Transfers
tags_raw:
- Banking
- Commercial Banking
- Financial Services
- Fortune 500
- Payments
- United States
- Super-Regional Bank
- Treasury Management
- Embedded Banking
- ACH
- Real-Time Payments
- Wire Transfer
- Financial-Services
url: https://raw.githubusercontent.com/api-evangelist/keycorp/refs/heads/main/apis.yml
created: '2026-03-21'
modified: '2026-07-23'
specificationVersion: '0.23'
apis:
- aid: keycorp:keycorp-account-information-api
  name: KeyCorp Account Information API
  description: The Account Information API from KeyCorp — 2 operation(s) for account information.
  humanURL: https://developer.key.com/docs/commercial/accounts
  baseURL: https://partner-api.key.com/commercial/accounts/v1
  tags:
  - Account Information
  properties:
  - type: OpenAPI
    url: openapi/keycorp-account-information-api-openapi.yml
  - type: Documentation
    url: https://developer.key.com/docs/commercial/accounts
  - type: Documentation
    url: https://developer.key.com/docs/ach
  - type: Documentation
    url: https://developer.key.com/docs/wireTransfer
  - type: Documentation
    url: https://developer.key.com/docs/rtp
  - type: Documentation
    url: https://developer.key.com/docs/actval/v2
  - type: Documentation
    url: https://developer.key.com/docs/achinquiry
  - type: Documentation
    url: https://developer.key.com/docs/wireinquiry
  - type: Documentation
    url: https://developer.key.com/docs/rtpinquiry
  - type: Documentation
    url: https://developer.key.com/docs/check-services
  - type: Documentation
    url: https://developer.key.com/docs/webhooks
- aid: keycorp:keycorp-account-transactions-api
  name: KeyCorp Account Transactions API
  description: The Account Transactions API from KeyCorp — 2 operation(s) for account transactions.
  humanURL: https://developer.key.com/docs/commercial/accounts
  baseURL: https://partner-api.key.com/commercial/accounts/v1
  tags:
  - Account Transactions
  properties:
  - type: OpenAPI
    url: openapi/keycorp-account-transactions-api-openapi.yml
  - type: Documentation
    url: https://developer.key.com/docs/commercial/accounts
  - type: Documentation
    url: https://developer.key.com/docs/ach
  - type: Documentation
    url: https://developer.key.com/docs/wireTransfer
  - type: Documentation
    url: https://developer.key.com/docs/rtp
  - type: Documentation
    url: https://developer.key.com/docs/actval/v2
  - type: Documentation
    url: https://developer.key.com/docs/achinquiry
  - type: Documentation
    url: https://developer.key.com/docs/wireinquiry
  - type: Documentation
    url: https://developer.key.com/docs/rtpinquiry
  - type: Documentation
    url: https://developer.key.com/docs/check-services
  - type: Documentation
    url: https://developer.key.com/docs/webhooks
- aid: keycorp:keycorp-accounts-api
  name: KeyCorp Accounts API
  description: The Accounts API from KeyCorp — 1 operation(s) for accounts.
  humanURL: https://developer.key.com/docs/commercial/accounts
  baseURL: https://partner-api.key.com/commercial/accounts/v1
  tags:
  - Account
  tags_raw:
  - Accounts
  properties:
  - type: OpenAPI
    url: openapi/keycorp-accounts-api-openapi.yml
  - type: Documentation
    url: https://developer.key.com/docs/commercial/accounts
  - type: Documentation
    url: https://developer.key.com/docs/ach
  - type: Documentation
    url: https://developer.key.com/docs/wireTransfer
  - type: Documentation
    url: https://developer.key.com/docs/rtp
  - type: Documentation
    url: https://developer.key.com/docs/actval/v2
  - type: Documentation
    url: https://developer.key.com/docs/achinquiry
  - type: Documentation
    url: https://developer.key.com/docs/wireinquiry
  - type: Documentation
    url: https://developer.key.com/docs/rtpinquiry
  - type: Documentation
    url: https://developer.key.com/docs/check-services
  - type: Documentation
    url: https://developer.key.com/docs/webhooks
- aid: keycorp:keycorp-ach-api
  name: KeyCorp ACH API
  description: The ACH API from KeyCorp — 1 operation(s) for ach.
  humanURL: https://developer.key.com/docs/commercial/accounts
  baseURL: https://partner-api.key.com/commercial/accounts/v1
  tags:
  - ACH
  properties:
  - type: OpenAPI
    url: openapi/keycorp-ach-api-openapi.yml
  - type: Documentation
    url: https://developer.key.com/docs/commercial/accounts
  - type: Documentation
    url: https://developer.key.com/docs/ach
  - type: Documentation
    url: https://developer.key.com/docs/wireTransfer
  - type: Documentation
    url: https://developer.key.com/docs/rtp
  - type: Documentation
    url: https://developer.key.com/docs/actval/v2
  - type: Documentation
    url: https://developer.key.com/docs/achinquiry
  - type: Documentation
    url: https://developer.key.com/docs/wireinquiry
  - type: Documentation
    url: https://developer.key.com/docs/rtpinquiry
  - type: Documentation
    url: https://developer.key.com/docs/check-services
  - type: Documentation
    url: https://developer.key.com/docs/webhooks
- aid: keycorp:keycorp-ach-payment-origination-api
  name: KeyCorp ACH Payment Origination API
  description: The ACH Payment Origination API from KeyCorp — 6 operation(s) for ach payment origination.
  humanURL: https://developer.key.com/docs/commercial/accounts
  baseURL: https://partner-api.key.com/commercial/accounts/v1
  tags:
  - ACH Payment Origination
  properties:
  - type: OpenAPI
    url: openapi/keycorp-ach-payment-origination-api-openapi.yml
  - type: Documentation
    url: https://developer.key.com/docs/commercial/accounts
  - type: Documentation
    url: https://developer.key.com/docs/ach
  - type: Documentation
    url: https://developer.key.com/docs/wireTransfer
  - type: Documentation
    url: https://developer.key.com/docs/rtp
  - type: Documentation
    url: https://developer.key.com/docs/actval/v2
  - type: Documentation
    url: https://developer.key.com/docs/achinquiry
  - type: Documentation
    url: https://developer.key.com/docs/wireinquiry
  - type: Documentation
    url: https://developer.key.com/docs/rtpinquiry
  - type: Documentation
    url: https://developer.key.com/docs/check-services
  - type: Documentation
    url: https://developer.key.com/docs/webhooks
- aid: keycorp:keycorp-ach-payment-request-inquiry-api
  name: KeyCorp ACH Payment Request Inquiry API
  description: The ACH Payment Request Inquiry API from KeyCorp — 2 operation(s) for ach payment request inquiry.
  humanURL: https://developer.key.com/docs/commercial/accounts
  baseURL: https://partner-api.key.com/commercial/accounts/v1
  tags:
  - ACH Payment Request Inquiry
  properties:
  - type: OpenAPI
    url: openapi/keycorp-ach-payment-request-inquiry-api-openapi.yml
  - type: Documentation
    url: https://developer.key.com/docs/commercial/accounts
  - type: Documentation
    url: https://developer.key.com/docs/ach
  - type: Documentation
    url: https://developer.key.com/docs/wireTransfer
  - type: Documentation
    url: https://developer.key.com/docs/rtp
  - type: Documentation
    url: https://developer.key.com/docs/actval/v2
  - type: Documentation
    url: https://developer.key.com/docs/achinquiry
  - type: Documentation
    url: https://developer.key.com/docs/wireinquiry
  - type: Documentation
    url: https://developer.key.com/docs/rtpinquiry
  - type: Documentation
    url: https://developer.key.com/docs/check-services
  - type: Documentation
    url: https://developer.key.com/docs/webhooks
- aid: keycorp:keycorp-ach-transactions-api
  name: KeyCorp ACH Transactions API
  description: ACH Inquiry functions to list and retrieve ACH transaction details
  humanURL: https://developer.key.com/docs/commercial/accounts
  baseURL: https://partner-api.key.com/commercial/accounts/v1
  tags:
  - ACH Transactions
  properties:
  - type: OpenAPI
    url: openapi/keycorp-ach-transactions-api-openapi.yml
  - type: Documentation
    url: https://developer.key.com/docs/commercial/accounts
  - type: Documentation
    url: https://developer.key.com/docs/ach
  - type: Documentation
    url: https://developer.key.com/docs/wireTransfer
  - type: Documentation
    url: https://developer.key.com/docs/rtp
  - type: Documentation
    url: https://developer.key.com/docs/actval/v2
  - type: Documentation
    url: https://developer.key.com/docs/achinquiry
  - type: Documentation
    url: https://developer.key.com/docs/wireinquiry
  - type: Documentation
    url: https://developer.key.com/docs/rtpinquiry
  - type: Documentation
    url: https://developer.key.com/docs/check-services
  - type: Documentation
    url: https://developer.key.com/docs/webhooks
- aid: keycorp:keycorp-imagecheck-api
  name: KeyCorp Image Check API
  description: List check images
  humanURL: https://developer.key.com/docs/commercial/accounts
  baseURL: https://partner-api.key.com/commercial/accounts/v1
  tags:
  - ImageCheck
  properties:
  - type: OpenAPI
    url: openapi/keycorp-imagecheck-api-openapi.yml
  - type: Documentation
    url: https://developer.key.com/docs/commercial/accounts
  - type: Documentation
    url: https://developer.key.com/docs/ach
  - type: Documentation
    url: https://developer.key.com/docs/wireTransfer
  - type: Documentation
    url: https://developer.key.com/docs/rtp
  - type: Documentation
    url: https://developer.key.com/docs/actval/v2
  - type: Documentation
    url: https://developer.key.com/docs/achinquiry
  - type: Documentation
    url: https://developer.key.com/docs/wireinquiry
  - type: Documentation
    url: https://developer.key.com/docs/rtpinquiry
  - type: Documentation
    url: https://developer.key.com/docs/check-services
  - type: Documentation
    url: https://developer.key.com/docs/webhooks
- aid: keycorp:keycorp-initiate-api
  name: KeyCorp Initiate API
  description: Send a payment.
  humanURL: https://developer.key.com/docs/commercial/accounts
  baseURL: https://partner-api.key.com/commercial/accounts/v1
  tags:
  - Initiate
  properties:
  - type: OpenAPI
    url: openapi/keycorp-initiate-api-openapi.yml
  - type: Documentation
    url: https://developer.key.com/docs/commercial/accounts
  - type: Documentation
    url: https://developer.key.com/docs/ach
  - type: Documentation
    url: https://developer.key.com/docs/wireTransfer
  - type: Documentation
    url: https://developer.key.com/docs/rtp
  - type: Documentation
    url: https://developer.key.com/docs/actval/v2
  - type: Documentation
    url: https://developer.key.com/docs/achinquiry
  - type: Documentation
    url: https://developer.key.com/docs/wireinquiry
  - type: Documentation
    url: https://developer.key.com/docs/rtpinquiry
  - type: Documentation
    url: https://developer.key.com/docs/check-services
  - type: Documentation
    url: https://developer.key.com/docs/webhooks
- aid: keycorp:keycorp-participant-api
  name: KeyCorp Participant API
  description: Look up a RTP participating banks.
  humanURL: https://developer.key.com/docs/commercial/accounts
  baseURL: https://partner-api.key.com/commercial/accounts/v1
  tags:
  - Participant
  properties:
  - type: OpenAPI
    url: openapi/keycorp-participant-api-openapi.yml
  - type: Documentation
    url: https://developer.key.com/docs/commercial/accounts
  - type: Documentation
    url: https://developer.key.com/docs/ach
  - type: Documentation
    url: https://developer.key.com/docs/wireTransfer
  - type: Documentation
    url: https://developer.key.com/docs/rtp
  - type: Documentation
    url: https://developer.key.com/docs/actval/v2
  - type: Documentation
    url: https://developer.key.com/docs/achinquiry
  - type: Documentation
    url: https://developer.key.com/docs/wireinquiry
  - type: Documentation
    url: https://developer.key.com/docs/rtpinquiry
  - type: Documentation
    url: https://developer.key.com/docs/check-services
  - type: Documentation
    url: https://developer.key.com/docs/webhooks
- aid: keycorp:keycorp-rtp-api
  name: KeyCorp RTP API
  description: RTP functions to list and retrieve real-time payment details
  humanURL: https://developer.key.com/docs/commercial/accounts
  baseURL: https://partner-api.key.com/commercial/accounts/v1
  tags:
  - RTP
  properties:
  - type: OpenAPI
    url: openapi/keycorp-rtp-api-openapi.yml
  - type: Documentation
    url: https://developer.key.com/docs/commercial/accounts
  - type: Documentation
    url: https://developer.key.com/docs/ach
  - type: Documentation
    url: https://developer.key.com/docs/wireTransfer
  - type: Documentation
    url: https://developer.key.com/docs/rtp
  - type: Documentation
    url: https://developer.key.com/docs/actval/v2
  - type: Documentation
    url: https://developer.key.com/docs/achinquiry
  - type: Documentation
    url: https://developer.key.com/docs/wireinquiry
  - type: Documentation
    url: https://developer.key.com/docs/rtpinquiry
  - type: Documentation
    url: https://developer.key.com/docs/check-services
  - type: Documentation
    url: https://developer.key.com/docs/webhooks
- aid: keycorp:keycorp-stoppayments-api
  name: KeyCorp Stop Payments API
  description: Place new stop payments
  humanURL: https://developer.key.com/docs/commercial/accounts
  baseURL: https://partner-api.key.com/commercial/accounts/v1
  tags:
  - Stop Payments
  tags_raw:
  - StopPayments
  properties:
  - type: OpenAPI
    url: openapi/keycorp-stoppayments-api-openapi.yml
  - type: Documentation
    url: https://developer.key.com/docs/commercial/accounts
  - type: Documentation
    url: https://developer.key.com/docs/ach
  - type: Documentation
    url: https://developer.key.com/docs/wireTransfer
  - type: Documentation
    url: https://developer.key.com/docs/rtp
  - type: Documentation
    url: https://developer.key.com/docs/actval/v2
  - type: Documentation
    url: https://developer.key.com/docs/achinquiry
  - type: Documentation
    url: https://developer.key.com/docs/wireinquiry
  - type: Documentation
    url: https://developer.key.com/docs/rtpinquiry
  - type: Documentation
    url: https://developer.key.com/docs/check-services
  - type: Documentation
    url: https://developer.key.com/docs/webhooks
- aid: keycorp:keycorp-undo-ach-payment-request-api
  name: KeyCorp Undo ACH Payment Request API
  description: The Undo ACH Payment Request API from KeyCorp — 1 operation(s) for undo ach payment request.
  humanURL: https://developer.key.com/docs/commercial/accounts
  baseURL: https://partner-api.key.com/commercial/accounts/v1
  tags:
  - Undo ACH Payment Request
  properties:
  - type: OpenAPI
    url: openapi/keycorp-undo-ach-payment-request-api-openapi.yml
  - type: Documentation
    url: https://developer.key.com/docs/commercial/accounts
  - type: Documentation
    url: https://developer.key.com/docs/ach
  - type: Documentation
    url: https://developer.key.com/docs/wireTransfer
  - type: Documentation
    url: https://developer.key.com/docs/rtp
  - type: Documentation
    url: https://developer.key.com/docs/actval/v2
  - type: Documentation
    url: https://developer.key.com/docs/achinquiry
  - type: Documentation
    url: https://developer.key.com/docs/wireinquiry
  - type: Documentation
    url: https://developer.key.com/docs/rtpinquiry
  - type: Documentation
    url: https://developer.key.com/docs/check-services
  - type: Documentation
    url: https://developer.key.com/docs/webhooks
- aid: keycorp:keycorp-validate-api
  name: KeyCorp Validate API
  description: Perform validation checks for a payment transaction.
  humanURL: https://developer.key.com/docs/commercial/accounts
  baseURL: https://partner-api.key.com/commercial/accounts/v1
  tags:
  - Validate
  properties:
  - type: OpenAPI
    url: openapi/keycorp-validate-api-openapi.yml
  - type: Documentation
    url: https://developer.key.com/docs/commercial/accounts
  - type: Documentation
    url: https://developer.key.com/docs/ach
  - type: Documentation
    url: https://developer.key.com/docs/wireTransfer
  - type: Documentation
    url: https://developer.key.com/docs/rtp
  - type: Documentation
    url: https://developer.key.com/docs/actval/v2
  - type: Documentation
    url: https://developer.key.com/docs/achinquiry
  - type: Documentation
    url: https://developer.key.com/docs/wireinquiry
  - type: Documentation
    url: https://developer.key.com/docs/rtpinquiry
  - type: Documentation
    url: https://developer.key.com/docs/check-services
  - type: Documentation
    url: https://developer.key.com/docs/webhooks
- aid: keycorp:keycorp-wire-api
  name: KeyCorp Wire API
  description: Wire Inquiry functions to list wires and retrieve wire details
  humanURL: https://developer.key.com/docs/commercial/accounts
  baseURL: https://partner-api.key.com/commercial/accounts/v1
  tags:
  - Wire
  properties:
  - type: OpenAPI
    url: openapi/keycorp-wire-api-openapi.yml
  - type: Documentation
    url: https://developer.key.com/docs/commercial/accounts
  - type: Documentation
    url: https://developer.key.com/docs/ach
  - type: Documentation
    url: https://developer.key.com/docs/wireTransfer
  - type: Documentation
    url: https://developer.key.com/docs/rtp
  - type: Documentation
    url: https://developer.key.com/docs/actval/v2
  - type: Documentation
    url: https://developer.key.com/docs/achinquiry
  - type: Documentation
    url: https://developer.key.com/docs/wireinquiry
  - type: Documentation
    url: https://developer.key.com/docs/rtpinquiry
  - type: Documentation
    url: https://developer.key.com/docs/check-services
  - type: Documentation
    url: https://developer.key.com/docs/webhooks
- aid: keycorp:keycorp-wire-rtp-v1-api
  name: KeyCorp Wire/RTP v1 API
  description: The Wire/RTP v1 API from KeyCorp — 1 operation(s) for wire/rtp v1.
  humanURL: https://developer.key.com/docs/commercial/accounts
  baseURL: https://partner-api.key.com/commercial/accounts/v1
  tags:
  - Wire/RTP v1
  properties:
  - type: OpenAPI
    url: openapi/keycorp-wire-rtp-v1-api-openapi.yml
  - type: Documentation
    url: https://developer.key.com/docs/commercial/accounts
  - type: Documentation
    url: https://developer.key.com/docs/ach
  - type: Documentation
    url: https://developer.key.com/docs/wireTransfer
  - type: Documentation
    url: https://developer.key.com/docs/rtp
  - type: Documentation
    url: https://developer.key.com/docs/actval/v2
  - type: Documentation
    url: https://developer.key.com/docs/achinquiry
  - type: Documentation
    url: https://developer.key.com/docs/wireinquiry
  - type: Documentation
    url: https://developer.key.com/docs/rtpinquiry
  - type: Documentation
    url: https://developer.key.com/docs/check-services
  - type: Documentation
    url: https://developer.key.com/docs/webhooks
- aid: keycorp:keycorp-wire-rtp-v2-api
  name: KeyCorp Wire/RTP v2 API
  description: The Wire/RTP v2 API from KeyCorp — 1 operation(s) for wire/rtp v2.
  humanURL: https://developer.key.com/docs/commercial/accounts
  baseURL: https://partner-api.key.com/commercial/accounts/v1
  tags:
  - Wire/RTP v2
  properties:
  - type: OpenAPI
    url: openapi/keycorp-wire-rtp-v2-api-openapi.yml
  - type: Documentation
    url: https://developer.key.com/docs/commercial/accounts
  - type: Documentation
    url: https://developer.key.com/docs/ach
  - type: Documentation
    url: https://developer.key.com/docs/wireTransfer
  - type: Documentation
    url: https://developer.key.com/docs/rtp
  - type: Documentation
    url: https://developer.key.com/docs/actval/v2
  - type: Documentation
    url: https://developer.key.com/docs/achinquiry
  - type: Documentation
    url: https://developer.key.com/docs/wireinquiry
  - type: Documentation
    url: https://developer.key.com/docs/rtpinquiry
  - type: Documentation
    url: https://developer.key.com/docs/check-services
  - type: Documentation
    url: https://developer.key.com/docs/webhooks
- aid: keycorp:keycorp-health-check-api
  name: KeyCorp Health Check API
  description: The Health Check API from KeyCorp — 7 operation(s) for health check.
  humanURL: https://developer.key.com/docs/commercial/accounts
  baseURL: https://partner-api.key.com/commercial/accounts/v1
  tags:
  - Health Check
  properties:
  - type: OpenAPI
    url: openapi/keycorp-health-check-api-openapi.yml
  - type: Documentation
    url: https://developer.key.com/docs/commercial/accounts
  - type: Documentation
    url: https://developer.key.com/docs/ach
  - type: Documentation
    url: https://developer.key.com/docs/wireTransfer
  - type: Documentation
    url: https://developer.key.com/docs/rtp
  - type: Documentation
    url: https://developer.key.com/docs/actval/v2
  - type: Documentation
    url: https://developer.key.com/docs/achinquiry
  - type: Documentation
    url: https://developer.key.com/docs/wireinquiry
  - type: Documentation
    url: https://developer.key.com/docs/rtpinquiry
  - type: Documentation
    url: https://developer.key.com/docs/check-services
  - type: Documentation
    url: https://developer.key.com/docs/webhooks
common:
- type: Plans
  url: plans/keycorp-plans-pricing.yml
- type: RateLimits
  url: rate-limits/keycorp-rate-limits.yml
- type: FinOps
  url: finops/keycorp-finops.yml
- type: CapabilityMap
  url: capabilities/keycorp-capability-edges.yml
  name: KeyCorp Business Capability Map
- type: AgentSkill
  url: skills/keycorp-originate-ach-payment.md
- type: TermsOfService
  url: https://developer.key.com/tos
- type: GettingStarted
  url: https://developer.key.com/guides/getting-started
- type: Signup
  url: https://developer.key.com/secure/signup
- type: AgenticAccess
  url: agentic-access/keycorp-agentic-access.yml
- type: DomainSecurity
  url: security/keycorp-domain-security.yml
- type: Authentication
  url: authentication/keycorp-authentication.yml
- type: Conventions
  url: conventions/keycorp-conventions.yml
- type: Idempotency
  url: conventions/keycorp-conventions.yml
- type: ErrorCatalog
  url: errors/keycorp-error-codes.yml
- type: Conformance
  url: conformance/keycorp-conformance.yml
- type: Lifecycle
  url: lifecycle/keycorp-lifecycle.yml
- type: Sandbox
  url: sandbox/keycorp-sandbox.yml
- type: DataModel
  url: data-model/keycorp-data-model.yml
- type: Webhooks
  url: asyncapi/keycorp-payment-alerts-webhooks.yml
- type: X-MCPServerCandidate
  url: mcp/keycorp-mcp.yml
  note: 'Renamed from MCPServer 2026-09-03 (roadmap#247): the manifest self-describes as status: candidate — a tool list derived
    from the published API contracts, not an existing server. The scorer already read the manifest and reported mcp_server
    correctly; the MCPServer type was crediting the artifact-type surfaces with a server that does not exist.'
- type: ToolCrosswalk
  url: mcp/keycorp-tool-crosswalk.yml
- type: AgentSkills
  url: skills/_index.yml
- type: Overlay
  url: overlays/keycorp-ach-originations-overlay.yaml
- type: LLMsTxt
  url: llms/keycorp-llms.txt
- type: Website
  url: https://www.key.com/
- type: Website
  url: https://www.keycorp.com/
- type: DeveloperPortal
  url: https://developer.key.com/
- type: Documentation
  url: https://developer.key.com/docs/commercial/accounts
- type: Support
  url: https://developer.key.com/support
- type: LinkedIn
  url: https://www.linkedin.com/company/keybank
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

KeyCorp API — frequently asked questions

Does KeyCorp have an API?

Yes. APIs.io lists 18 APIs from KeyCorp, including KeyCorp Account Information API, KeyCorp Account Transactions API and KeyCorp Accounts API, and 15 more.

Is there an OpenAPI specification for the KeyCorp API?

Yes. APIs.io indexes 18 OpenAPI specifications for KeyCorp, each linked for download from this page.

How do I authenticate with the KeyCorp API?

KeyCorp uses bearer-token authentication (http/mutualTLS · 2 schemes). The details are profiled on APIs.io as Keycorp Authentication.

How much does the KeyCorp API cost?

APIs.io lists 1 pricing plan for KeyCorp, with each plan's price, limits and inclusions under Pricing on this page.

Is the KeyCorp API ready for AI agents?

KeyCorp has a Kin Score of 42.1 out of 100 (developing) and an Agent Readiness score of 35.0 (agent-ready), scored by API Evangelist on 2026-11-06.

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