# KeyBank RTP Send Payment API

**Canonical:** https://apis.io/apis/keycorp/rtp-send-payment-api/  
**Provider:** KeyCorp — https://apis.io/providers/keycorp/  
**Base URL:** https://partner-api.key.com/rtp/v1/payment  
**Documentation:** https://developer.key.com/docs/rtp

KeyBank RTP Send Payment API is one of 10 APIs that [KeyCorp](https://apis.io/providers/keycorp/) publishes on the [APIs.io](https://apis.io/) network, described by a machine-readable OpenAPI specification. Tagged areas include Payments, Real-Time Payments, Commercial Banking, and United States. The published artifact set on APIs.io includes an OpenAPI specification and API documentation.

The RTP Send Payment API initiates instant, irrevocable payments over The Clearing House Real-Time Payments (RTP) network from commercial KeyBank accounts. Sharing KeyBank's combined RTP and Wire Payments service, it supports payment initiation, pre-submission validation, and RTP participant directory lookups by routing number so senders can confirm reachability before dispatch. Secured with OAuth2 bearer tokens and client certificates over https://partner-api.key.com, with a QV sandbox for integration testing.

## Machine-readable artifacts (2)

- **OpenAPI** — https://raw.githubusercontent.com/api-evangelist/keycorp/refs/heads/main/openapi/keycorp-rtp-wire-payments-openapi.yml
- **Documentation** — https://developer.key.com/docs/rtp

## Other KeyCorp APIs (9)

- [KeyBank Account Information API](https://apis.io/apis/keycorp/account-information-api/)
- [KeyBank ACH Origination API](https://apis.io/apis/keycorp/ach-origination-api/)
- [KeyBank Wire Transfer API](https://apis.io/apis/keycorp/wire-transfer-api/)
- [KeyBank Account Validation API](https://apis.io/apis/keycorp/account-validation-api/)
- [KeyBank ACH Inquiry API](https://apis.io/apis/keycorp/ach-inquiry-api/)
- [KeyBank Wire Inquiry API](https://apis.io/apis/keycorp/wire-inquiry-api/)
- [KeyBank RTP Inquiry API](https://apis.io/apis/keycorp/rtp-inquiry-api/)
- [KeyBank Check Services API](https://apis.io/apis/keycorp/check-services-api/)
- [KeyBank Webhooks](https://apis.io/apis/keycorp/webhooks/)

## Tags

Payments, Real-Time Payments, Commercial Banking, United States

---

Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/apis/keycorp/rtp-send-payment-api/). The API's provider profile, Kin Score and agent-readiness rating are at https://apis.io/providers/keycorp/.