# Start SAML SSO (deprecated)

Initiates an SSO login flow with a SAML identity provider (IDP). This results in a POST redirect to the SAML IDP configured for the organization, which is determined based on the domain of the user's email address. Once the SAML IDP authenticates the user, it will redirect back to the app with the SAML response so the app can complete the SSO flow. Note:   If the user isn't a member of an organization configured for SAML SSO, an error is returned. New users are added to the app on their first successful SSO login, regardless of the application's public sign-up setting.

Endpoint: GET /v1/auth/sso/saml/start

## Query parameters:

  - `client_id` (string, required)
    Client ID

  - `email` (string, required)
    User's email address

  - `org_id` (string)
    Organization ID, used for member login in B2B scenarios


## Response 200 fields