---
ref: company:clerk
name: Clerk
tools: [tool:clerk/create-invitation, tool:clerk/invite-waitlist-entry, tool:clerk/list-users]
tags: [capability:authenticate-users, category:auth, has:api, has:cli]
updated: 2026-09-26
---

# Clerk

User management for developers, with prebuilt sign-up and sign-in, organizations, SSO and billing.

Clerk is user management for developers: sign-up and sign-in with prebuilt UI
components, multi-tenant organizations, enterprise SSO, subscription billing
and machine-to-machine auth. Its Backend API and CLI read and manage an
application's users, invitations and waitlist, so new sign-ups can start a
growth workflow.

## Tools

- tool:clerk/create-invitation — Invite a user: Creates an invitation for an email address and sends the invitation email with a link to sign up.
- tool:clerk/invite-waitlist-entry — Invite a waitlist entry: Sends an invitation to the email address on a waitlist entry so that person can sign up.
- tool:clerk/list-users — List users: Returns the application's users, newest first, filtered by email, name, organization or sign-up, sign-in and last-active dates.

## Links

- Website: https://clerk.com
- Docs: https://clerk.com/docs