Stytch API
Developer-first authentication platform offering passwordless auth (magic links, OTP, WebAuthn/passkeys), B2C user management, and B2B Organizations with SSO/SAML support — a modern, API-centric alternative to Auth0 and Okta.
Score Breakdown
⚙ Agent Friendliness
🔒 Security
TLS enforced on all endpoints. Project secret acts as a single high-privilege credential with no scope restriction — a meaningful gap for least-privilege agent access. Test/live key separation is good. Webhooks include signature headers for verification. SOC2 Type II certified. HIPAA BAA available.
⚡ Reliability
Best When
You're building a modern SaaS app or B2B product and want developer-friendly passwordless auth with strong B2B multi-tenancy support, without the complexity and cost of Okta.
Avoid When
You need deep enterprise IdP federation (AD FS, legacy on-prem) out of the box, or your organization already has Okta/Auth0 deeply embedded and switching cost is prohibitive.
Use Cases
- • Adding passwordless login (magic links, OTP, passkeys) to web and mobile apps
- • B2B SaaS authentication with multi-tenant Organizations and per-org SSO
- • Replacing legacy username/password with modern auth flows via agent-driven user management
- • Migrating users from another auth provider without forcing re-registration
- • Embedding auth into agent workflows that create or verify user identities
Not For
- • Teams who need on-premises or air-gapped identity management
- • Applications requiring legacy Kerberos or LDAP integration without a cloud bridge
- • Pure machine-to-machine auth (use OAuth2 client credentials or API keys directly)
Interface
Authentication
Authentication uses project_id and secret pair sent as Basic auth credentials. Separate public tokens for frontend SDK initialization. Test vs Live environments use different project credentials. No per-key scoping — credentials carry full project access.
Pricing
Generous free tier for prototyping and small apps. Pricing scales per MAU, which can become significant at higher volumes. SSO/SAML features available on paid plans. No monthly minimum on self-serve.
Agent Metadata
Known Gotchas
- ⚠ Test and Live environments require different project_id/secret pairs — easy to accidentally use test credentials in production
- ⚠ Magic link tokens expire quickly (default 60 minutes) — agents coordinating multi-step flows must account for expiry
- ⚠ B2B Organizations API is a separate product from B2C Users — endpoints and data models differ significantly
- ⚠ SAML/SSO configuration requires per-organization setup and IdP metadata exchange — not fully automatable via API alone
- ⚠ No per-key permission scoping — a leaked secret gives full project access; store carefully
- ⚠ Webhook signature verification requires HMAC-SHA256 validation — agents consuming webhooks must verify or risk spoofed events
Alternatives
Full Evaluation Report
Comprehensive deep-dive: security analysis, reliability audit, agent experience review, cost modeling, competitive positioning, and improvement roadmap for Stytch API.
AI-powered analysis · PDF + markdown · Delivered within 30 minutes
Package Brief
Quick verdict, integration guide, cost projections, gotchas with workarounds, and alternatives comparison.
Delivered within 10 minutes
Score Monitoring
Get alerted when this package's AF, security, or reliability scores change significantly. Stay ahead of regressions.
Continuous monitoring
Scores are editorial opinions as of 2026-03-07.