Identity & Access Management
Stytch
Developer APIs and SDKs for CIAM, passwordless login, B2B SSO, fraud prevention, and AI agent auth.
Stytch Overview
What it does
Stytch is a customer identity and access management (CIAM) platform delivered as backend APIs and frontend SDKs rather than a hosted login portal, giving developers a single integration for authentication, authorization, and fraud prevention. The platform spans consumer authentication, multi-tenant B2B SaaS authentication, and identity for AI agents: its Connected Apps capability turns an application into an OAuth identity provider so AI agents and Model Context Protocol (MCP) clients can authenticate with scoped, revocable permissions.
How it works
Applications call Stytch's REST APIs directly or embed its JavaScript, React, and mobile SDKs and prebuilt UI components. Consumer flows support passkeys, magic links, one-time passcodes, passwords, and social login across 15 OAuth providers, while B2B flows add organization-level multi-tenancy with SAML and OIDC single sign-on, SCIM provisioning, role-based access control, and just-in-time provisioning, configurable through an embeddable Admin Portal. An optional Device Fingerprinting add-on scores requests in under 100 milliseconds to block bots, credential stuffing, and account takeover. Tome migrated tens of millions of users to the platform from Auth0 in under a month.
Credentials and traction
SOC 2 Type II attested and ISO 27001 certified, with compliance documentation including CAIQ and PCI-DSS materials available through the Twilio Trust Center. The platform has powered hundreds of millions of end users and thousands of applications; named customers include HubSpot, Replit, Descript, and Bitcoin.com. Stytch targets development teams from startups through enterprises that need consumer authentication, enterprise-ready B2B single sign-on, and AI agent identity.
Key Capabilities
mapped to solution categoriesSupports passkey registration and authentication via the WebAuthn API, enabling biometric-authenticated, phishing-resistant login for consumer-facing applications.
Federates login with Google, Apple, Facebook, Microsoft, and other external identity providers via OIDC, returning normalized user attributes.
Applies bot detection, velocity checks, and device fingerprinting at the authentication layer to block credential stuffing, account takeover, and fake account creation.
Handles authentication and session management for millions of concurrent external users at low latency, sustaining consumer traffic spikes such as product launches and seasonal peaks.
Implements FIDO2/WebAuthn for phishing-resistant authentication, binding credentials cryptographically to the registered origin to prevent use on phishing domains.
Supports passkeys synced across devices through encrypted cloud storage (such as iCloud Keychain or Google Password Manager) for cross-device sign-in without re-enrolling each device.
Binds passkeys to specific device hardware (TPM, Secure Enclave), the private key cannot be exported or used from a different device.
Supports parallel operation of password and passwordless authentication during transition, allowing gradual user migration without a hard cutover.
Compliance
certificationsIntegrations
compatible toolsImplementation & support
Info last updated on July 26, 2026
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