# SSO Authentication API

**Canonical:** https://apis.io/apis/sso/sso-authentication-api/  
**Provider:** SSO — https://apis.io/providers/sso/  
**Base URL:** https://your-idp.example.com  
**Documentation:** https://www.oasis-open.org/standards#samlv2.0

SSO Authentication API is one of 8 APIs that [SSO](https://apis.io/providers/sso/) publishes on the [APIs.io](https://apis.io/) network, described by a machine-readable OpenAPI specification. Tagged areas include Authentication. The published artifact set on APIs.io includes an OpenAPI specification and API documentation.

SAML 2.0 authentication request and response endpoints for initiating and completing SSO login flows.

## Machine-readable artifacts (6)

- **OpenAPI** — https://raw.githubusercontent.com/api-evangelist/sso/refs/heads/main/openapi/sso-authentication-api-openapi.yml
- **Documentation** — https://www.oasis-open.org/standards#samlv2.0
- **Documentation** — https://wiki.oasis-open.org/security/FrontPage
- **Documentation** — https://openid.net/connect/
- **Specification** — https://openid.net/developers/specs/
- **APIsJSON** — https://raw.githubusercontent.com/api-evangelist/sso/refs/heads/main/apis.yml

## Other SSO APIs (7)

- [SSO Authorization API](https://apis.io/apis/sso/sso-authorization-api/)
- [SSO Discovery API](https://apis.io/apis/sso/sso-discovery-api/)
- [SSO Keys API](https://apis.io/apis/sso/sso-keys-api/)
- [SSO Logout API](https://apis.io/apis/sso/sso-logout-api/)
- [SSO Metadata API](https://apis.io/apis/sso/sso-metadata-api/)
- [SSO Token API](https://apis.io/apis/sso/sso-token-api/)
- [SSO User Info API](https://apis.io/apis/sso/sso-user-info-api/)

## Tags

Authentication

---

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