# FaceSign SAML IdP > Add FaceSign step-up verification to any SAML service provider. ## Docs - [FaceSign SAML IdP](https://idp-docs.facesign.dev/overview.md): Add FaceSign step-up verification to any SAML service provider. Standard SAML 2.0 — configuration, not custom code. - [Quickstart](https://idp-docs.facesign.dev/quickstart.md): Import the metadata, register your service provider, and run a real round-trip. - [Configure your service provider](https://idp-docs.facesign.dev/configure-your-service-provider.md): The two values that register an SP, what activates immediately, and what a person actually experiences. - [SAML request contract](https://idp-docs.facesign.dev/saml-request-contract.md): What FaceSign accepts, what it returns, and what your service provider must check before it trusts either. - [Validate responses](https://idp-docs.facesign.dev/validate-responses.md): Everything your service provider must check before it trusts a FaceSign response. - [Test the live sandbox](https://idp-docs.facesign.dev/test-the-live-sandbox.md): Exercise a real SP-initiated SAML round-trip against FaceSign's own loopback service provider. - [Troubleshooting](https://idp-docs.facesign.dev/troubleshooting.md): Concrete errors from the SSO endpoint and the verification flow, and what each one means. - [Security and operations](https://idp-docs.facesign.dev/security-and-operations.md): Fail-closed semantics, the limits your service provider must design for, and our assurance posture. - [Silverfort Bridge pilot](https://idp-docs.facesign.dev/silverfort-bridge-pilot.md): Partner-specific onboarding for the Silverfort Bridge integration, kept separate from the generic SAML documentation. ## OpenAPI Specs - [openapi](https://idp-docs.facesign.dev/openapi.yaml) ## Optional - [IdP metadata (XML)](https://idp.facesign.dev/api/saml/metadata) - [Service health](https://idp.facesign.dev/api/health) - [Loopback sandbox](https://idp.facesign.dev/test-sp)