Stytch

Identity platform providing APIs and SDKs for authentication, authorization, and security. Covers both consumer and B2B flows with passwordless options, multi-factor auth, single sign-on, and user management.

Acquired by Twilio, Stytch powers identity for AI agent platforms such as Geno, Crossmint, and Spydr. Stands out by offering full control over the login experience: pre-built frontend components, headless SDKs, or backend-only APIs. Native multi-tenancy and org-first data models mean B2B features like SCIM and RBAC work without custom glue. Includes M2M authentication for service-to-service calls and an embeddable admin portal for enterprise self-serve SSO and SCIM setup.

Key capabilities:

• Passkeys, magic links, OAuth, SMS passcodes, WebAuthn, breach-resistant passwords
• B2B: SAML and OIDC SSO, SCIM provisioning, RBAC, JIT provisioning, per-org auth policies
• Embeddable admin portal for customers to self-serve auth and SSO configuration
• M2M authentication for service-to-service communication without human involvement
• Bot detection, device-aware MFA, and intelligent rate limiting for fraud protection

Developers use Stytch to ship auth across consumer and enterprise use cases. Backend integration works via REST APIs or SDKs for Node, Python, and Go. Teams building AI tools or agent platforms rely on Stytch for MCP authentication, authorization, and consent management.