# Yorkshire Building Society Confirmation of Funds API

**Canonical:** https://apis.io/apis/yorkshire-building-society/ybs-confirmation-of-funds-api/  
**Provider:** Yorkshire Building Society — https://apis.io/providers/yorkshire-building-society/  
**Base URL:** https://ob-ybs.api.ybs.co.uk/open-banking/v3.1/cbpii  
**Documentation:** https://developers.ybs.co.uk/api-catalog/confirmation-funds-api

Yorkshire Building Society Confirmation of Funds API is one of 6 APIs that [Yorkshire Building Society](https://apis.io/providers/yorkshire-building-society/) publishes on the [APIs.io](https://apis.io/) network, described by a machine-readable OpenAPI specification. Tagged areas include Confirmation of Funds, CBPII, and Open Banking. The published artifact set on APIs.io includes an OpenAPI specification, API documentation, an API reference, and a getting-started guide.

OBIE Read/Write Confirmation of Funds (CBPII) API v3.1.2 - lets FCA-authorised card-based payment instrument issuers set up a funds confirmation consent and confirm whether a specified amount is available on a consenting YBS or Chelsea Building Society account. FAPI-secured (OAuth2/OIDC, mTLS, PSD2 SCA).

## Machine-readable artifacts (4)

- **OpenAPI** — https://raw.githubusercontent.com/api-evangelist/yorkshire-building-society/refs/heads/main/openapi/yorkshire-building-society-confirmation-of-funds-api-openapi.yaml
- **Documentation** — https://developers.ybs.co.uk/api-catalog/confirmation-funds-api
- **APIReference** — https://developers.ybs.co.uk/api-catalog/confirmation-funds-api
- **GettingStarted** — https://developers.ybs.co.uk/docs/getting-started

## Other Yorkshire Building Society APIs (5)

- [Yorkshire Building Society Account Information API](https://apis.io/apis/yorkshire-building-society/ybs-account-information-api/)
- [Yorkshire Building Society Payment Initiation API](https://apis.io/apis/yorkshire-building-society/ybs-payment-initiation-api/)
- [Yorkshire Building Society Event Subscriptions API](https://apis.io/apis/yorkshire-building-society/ybs-event-subscriptions-api/)
- [Yorkshire Building Society Dynamic Client Registration API](https://apis.io/apis/yorkshire-building-society/ybs-dynamic-client-registration-api/)
- [Yorkshire Building Society Generate Access Token API](https://apis.io/apis/yorkshire-building-society/ybs-generate-access-token-api/)

## Tags

Confirmation of Funds, CBPII, Open Banking

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/apis/yorkshire-building-society/ybs-confirmation-of-funds-api/). The API's provider profile, Kin Score and agent-readiness rating are at https://apis.io/providers/yorkshire-building-society/.