Clerk is unclaimed —

Clerk

The easiest way to add authentication and user management to your application.·clerk.com

Clerk is a user management platform that provides drop-in UI components, flexible APIs, and admin dashboards for authentication, authorization, and billing. It offers sign-up/sign-in flows, multi-factor authentication, social login, multi-tenant organizations, enterprise SSO/SCIM, subscription billing, and machine-to-machine authentication. Clerk ships SDKs for frameworks such as Next.js, React, Expo, and many others, and is designed to be dropped into web and mobile applications.

What it's for

Adding sign-up and sign-in to an applicationMulti-factor authenticationSocial sign-on with 20+ providersFraud and bot detection on sign-upsSession management and device monitoringMulti-tenant organization management (roles, invitations, auto-join)Enterprise SSO (SAML, OIDC, EASIE) and SCIM/Directory Sync provisioningSubscription billing for B2C and B2B appsWaitlist collection for pre-launch accessMachine-to-machine authentication and API key issuanceGating application features based on subscription plan

Features 21

API Keys for machine authentication / M2M tokens
Application and Admin Logs
Auto-join organizations by email domain
Bot detection and fraud/abuse prevention
Clerk Billing: subscription plans, PricingTable component, feature gating via has()/<Show/>
Clerk CLI for agent-driven setup
Custom roles and permissions
Email and SMS one-time passcodes
Enterprise SSO (SAML, OIDC, EASIE)
Invitations
Magic links
MCP server for AI agent integration
Multi-factor authentication (MFA)
Multi-tenant Organizations (CreateOrganization, OrganizationSwitcher, OrganizationProfile, OrganizationList)
Passkeys and biometric sign-in
Password authentication with breach detection
Prebuilt drop-in UI components (SignUp, SignIn, UserButton, UserProfile, Waitlist)
Self-serve Directory Sync / SCIM provisioning
Session management with active device monitoring and revocation
Social Sign-On with 20+ providers
Web3 wallet authentication (MetaMask, Coinbase Wallet)

At a glance

free tierAPI

TypeLibrary / SDK

DeploymentCloud

PlatformsWeb, iOS, Android

Fordevelopers, B2B SaaS teams, startups, students

CompanyClerk, Inc. · 2019

Integrations

Microsoft Entra IDSupabaseConvexOkta WorkforceStripeGoogle WorkspaceGitHubFacebookGoogleVercel

Complianceself-reported

CCPAGDPRSOC 2 Type IIHIPAA

Resources

Pricing

Hobby plan is free with no credit card required (free for first 50,000 monthly retained users and 100 monthly retained orgs). Enterprise plan is custom-priced and billed annually only. Clerk Billing (for customers' own subscriptions) charges 0.7% of billing volume plus Stripe's transaction fee (2.9% + $0.30).

HobbyFree

No credit card required

50,000 MRU limit per app; up to 3 dashboard seats; up to 5 user impersonations; fixed 7-day session lifetime; 1-day log retention

Pro$25/mo

$20/mo billed annually or $25/mo billed monthly

50,000 MRU included per app (overage $0.02/mo each above 50K, decreasing at higher tiers); 1 SSO connection included (additional $75/mo each); 1 Directory Sync connection included

Business$300/mo

$250/mo billed annually or $300/mo billed monthly

10 dashboard seats included (additional $20/mo each)

EnterpriseQuote

Custom pricing, contact sales

Custom; only billed annually

Pre-negotiated startup discounts available through partners (Stripe Atlas, Y Combinator, South Park Commons, OnDeck) for companies up to 1 year post-launch and up to $5 million in venture funding, via Clerk for Startups.

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