# Nationwide Confirmation of Funds API (CBPII)

**Canonical:** https://apis.io/apis/nationwide-building-society/nationwide-confirmation-of-funds-api/  
**Provider:** Nationwide Building Society — https://apis.io/providers/nationwide-building-society/  
**Base URL:** https://api.nationwide.co.uk/open-banking/v3.1/cbpii  
**Documentation:** https://developer.nationwide.co.uk/open-banking/utility-apis

Nationwide Confirmation of Funds API (CBPII) is one of 7 APIs that [Nationwide Building Society](https://apis.io/providers/nationwide-building-society/) publishes on the [APIs.io](https://apis.io/) network. Tagged areas include Confirmation of Funds, CBPII, and Read/Write. The published artifact set on APIs.io includes API documentation, an API reference, and authentication docs.

OBIE Read/Write Confirmation of Funds (CBPII) utility API letting a consented card-based payment instrument issuer check whether funds are available on a Nationwide account. FAPI-secured (OAuth2/OIDC, mutual-TLS, PSD2 SCA).

## Machine-readable artifacts (3)

- **Documentation** — https://developer.nationwide.co.uk/open-banking/utility-apis
- **APIReference** — https://developer.nationwide.co.uk/open-banking/utility-apis
- **Authentication** — https://developer.nationwide.co.uk/open-banking

## Other Nationwide Building Society APIs (6)

- [Nationwide ATM Locator API](https://apis.io/apis/nationwide-building-society/nationwide-atm-locator-api/)
- [Nationwide Branch Locator API](https://apis.io/apis/nationwide-building-society/nationwide-branch-locator-api/)
- [Nationwide Personal Current Accounts API](https://apis.io/apis/nationwide-building-society/nationwide-personal-current-accounts-api/)
- [Nationwide Account and Transaction Information API (AIS)](https://apis.io/apis/nationwide-building-society/nationwide-account-information-api/)
- [Nationwide Payment Initiation API (PIS)](https://apis.io/apis/nationwide-building-society/nationwide-payment-initiation-api/)
- [Nationwide Variable Recurring Payments API (VRP)](https://apis.io/apis/nationwide-building-society/nationwide-variable-recurring-payments-api/)

## Tags

Confirmation of Funds, CBPII, Read/Write

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