# Clerk

Clerk provides authentication and user management for web and mobile applications, delivered as embeddable UI components, APIs and admin dashboards. It supports passwords, magic links, one-time codes, social sign-on, passkeys, MFA, enterprise SSO via SAML and OIDC, and SCIM directory sync. Add-ons cover B2B multi-tenancy with organizations and roles, fraud and abuse protection, administration, and subscription billing. SDKs target modern frameworks such as Next.js, React, Expo and Astro.

Page: https://slateindex.ai/brand/clerk · data of 2026-11-03

## Facts

- Founded: 2019
- Headquarters: San Francisco, CA, United States
- Employees: 51–200
- Company type: Private, venture-backed
- Latest funding: Series C
- Deployment: Cloud (SaaS)
- Best for: Developers building React and Next.js apps who want prebuilt auth and user management, including B2B SaaS needing organizations and SSO
- Compliance: SOC 2 Type 2, HIPAA, GDPR (EU-U.S. Data Privacy Framework), CCPA

## Products

- User Authentication: Sign-in and sign-up with passwords, magic links, OTP, social SSO, passkeys and MFA.
- B2B Authentication: Multi-tenancy with organizations, invitations, auto-join and custom roles and permissions.
- Enterprise Authentication: SAML/OIDC SSO connections and SCIM directory sync.
- Protect: Fraud and abuse protection including bot detection, brute force prevention and rate limits.
- Billing: Subscription billing on Stripe with prebuilt pricing and self-service components.
- Administration: Advanced user management including user impersonation.
- Machine Authentication: User API keys and machine-to-machine tokens.
- Clerk CLI and MCP server: Tools letting developers and AI agents set up and configure Clerk.

## Rankings

| Category | Rank | Visibility | Mentions |
|---|---|---|---|
| Identity & Access Management | 22 of 37 | 3.1 | 4 |

## By engine

| Engine | Visibility | Mention rate |
|---|---|---|
| chatgpt | 1.1 | 4.5% |
| google_ai_mode | 3.7 | 7.4% |
| perplexity | 2.4 | 7.4% |

## Definitions

- Visibility (0–100): how often and how high AI answers name the brand, weighted by position.
- Mention rate: share of collected AI answers that name the brand.
- Share of voice: the brand's mentions as a share of all brand mentions in the category.
- Citation authority: share of answers naming the brand that cite the brand's own site.

Cite as: SlateIndex, “Clerk AI visibility profile”, https://slateindex.ai/brand/clerk, data of 2026-11-03. Licence: CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/).