# TSB OAuth Toolkit (OTK) Server

**Canonical:** https://apis.io/apis/tsb-bank/tsb-oauth-toolkit-server/  
**Provider:** TSB Bank — https://apis.io/providers/tsb-bank/  
**Base URL:** https://apis.tsb.co.uk  
**Documentation:** https://apis.developer.tsb.co.uk/

TSB OAuth Toolkit (OTK) Server is one of 5 APIs that [TSB Bank](https://apis.io/providers/tsb-bank/) publishes on the [APIs.io](https://apis.io/) network, described by a machine-readable OpenAPI specification. Tagged areas include Authentication, OpenID Connect, Identity, and FAPI. The published artifact set on APIs.io includes an OpenAPI specification and API documentation.

TSB's OpenID Connect / OAuth2 authorization server (Curity OAuth Toolkit, OTK Server APIs v4.3.1), backing the FAPI-secured OBIE Read/Write services. Exposes the authorize, token, token-revocation, userinfo, JWKS, session, and OIDC dynamic-client-registration endpoints. The OpenAPI 3.0.2 contract and the OpenID Provider discovery document are publicly served at apis.tsb.co.uk; token issuance and protected operations require client credentials and (for account/payment APIs) mutual-TLS with OBIE/eIDAS certificates.

## Machine-readable artifacts (4)

- **OpenAPI** — https://raw.githubusercontent.com/api-evangelist/tsb-bank/refs/heads/main/openapi/tsb-bank-oauth-server-openapi.json
- **Overlay** — https://raw.githubusercontent.com/api-evangelist/tsb-bank/refs/heads/main/overlays/tsb-bank-oauth-server-overlay.yaml
- **Documentation** — https://apis.tsb.co.uk/.well-known/openid-configuration
- **OpenIDConnect** — https://apis.tsb.co.uk/.well-known/openid-configuration

## Other TSB Bank APIs (4)

- [TSB Open Data API](https://apis.io/apis/tsb-bank/tsb-open-data-api/)
- [TSB Account and Transaction Information API (AIS)](https://apis.io/apis/tsb-bank/tsb-account-transaction-information-api/)
- [TSB Payment Initiation API (PIS)](https://apis.io/apis/tsb-bank/tsb-payment-initiation-api/)
- [TSB Confirmation of Funds API (CBPII)](https://apis.io/apis/tsb-bank/tsb-confirmation-of-funds-api/)

## Tags

Authentication, OpenID Connect, Identity, FAPI

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/apis/tsb-bank/tsb-oauth-toolkit-server/). The API's provider profile, Kin Score and agent-readiness rating are at https://apis.io/providers/tsb-bank/.