---
title: "Start SAML2 SSO login"
method: POST
path: "/sso/saml2/start"
tags: ["SSO"]
---

# Start SAML2 SSO login

`POST /sso/saml2/start`

Starts SAML2-based SSO login by resolving the project's SSO configuration for the email and returning an IdP redirect URL.

## Request body

- SsoSaml2StartReq
  - `email` string, required
  - `invitationToken` string

## Response `200`

SSO start succeeded.

- SsoSaml2StartRsp
  - `idpRedirectURL` string, required
  - `ssoNonce` string, required

## Other responses

- `default` — Error

---

[API](https://skmtc.net/corbado/apis/corbado-backend-api.md) · [All operations](https://skmtc.net/corbado/apis/corbado-backend-api/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/corbado/corbado-backend-api/versions/1f6143efe426/schema)