Auth0

Identity platform (by Okta) covering login, social and enterprise connections, MFA and B2B features.

Works with AI agents:llms.txtMCP
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Auth0, owned by Okta, is a hosted identity platform for customer-facing apps. It handles login with passwords, passwordless codes, social providers and enterprise identity providers, plus MFA, user storage and access tokens for your APIs.

Everything lives in a tenant: a named configuration space that holds your applications, connections (the ways users can log in) and user profiles, usually with separate tenants for development, staging and production. The recommended flow is Universal Login: your app redirects to a login page Auth0 hosts, the user authenticates there, and your app receives standard OAuth 2.0 / OpenID Connect tokens back. You customize behavior with Actions, versioned Node.js functions that run at points such as pre-registration or post-login. Quickstarts cover Next.js, React, Vue, Angular, Svelte, Express, Fastify, Hono, Django, FastAPI, Rails, Laravel, Go, Java, .NET, iOS, Android, Flutter and React Native.

For a small team the practical pieces are Organizations for B2B tenants, enterprise connections with SAML and SCIM, account linking, breached-password detection and attack protection, and bulk user import and export. The public cloud is multi-tenant on AWS with regions in the US, UK, Europe, Australia, Japan and Canada; dedicated private cloud on AWS or Azure is an Enterprise option.

The model has many moving parts (tenants, connections, Actions, Management API tokens), which is more to learn than a drop-in component kit. Rate limits depend on your plan and tenant type, and dedicated infrastructure is reserved for Enterprise contracts.

Where it fits

How Auth0 itself is built

3 tools, from its own code, website and Product Hunt page.

Who uses it

21 makers' products, each linked to the source that shows it, and 17 open-source projects that declare it in their code.

The maker says so 18Subprocessor list 4Declared in code 17How evidence is collected →
MaildroppaGrow your list, send newsletters, and automate follow-up. Every feature on Free. Premium…

“Listed in their tool stack on Starter Story (trello email)”

AuthenticationMaker says so +1 · source ↗
Tech LockdownLearn the best methods for blocking unwanted content on computers and smartphones

“I had a simple login system using Auth0 and it would unlock access to the premium content on the website.”

AuthenticationMaker says so · source ↗
PassionfrootBuilt for modern GTM teams to plan, run, pay, and measure creator-led growth — end to end.

“Listed in their tool stack on Starter Story (email)”

AuthenticationMaker says so · source ↗
Ada.imThe world's first AI Data Analyst

“For handling our user authentication with enterprise-grade security, so our users can log in instantly and focus on their data.”

AuthenticationMaker says so · source ↗
WaydevTokenmaxxing? AI adoption? AI Impact? RL?

“Auth0 makes authentication effortless and enterprise-grade at the same time. For Waydev AI, it handles thousands of users and complex role-based access without adding friction to our development flow. We compared multiple identity providers, but Auth0 stood out for reliability, documentation quality, and easy integration with our AI and analytics stack. It lets us stay focused on building intelligence, not managing login flows.”

AuthenticationMaker says so · source ↗
ChronicleCreate your personal memex through voice for total recall

“You really don't want to mess with security and authentication yourself. Auth0 is great for B2C apps.”

AuthenticationMaker says so · source ↗
ClawTeamsThe first goal-driven, proactive AI team for e-commerce

“When your AI agents are browsing your store backend, updating SKUs, and emailing customers on your behalf — identity boundaries matter a lot. Auth0's M2M token model gave us exactly the permission control we needed for safe, scoped agent actions. 👉 ClawTeams — AI agent teams built for ecommerce, with security taken seriously.”

AuthenticationMaker says so · source ↗
SeyftAIA real-time multi-modal content moderation platform

“A huge thanks to Auth0 for helping us out with the authentication flow. They were really quick with the onboarding process and even with the support tickets.”

AuthenticationMaker says so · source ↗
AlmanaxAn AI Security Engineer fixing your code vulnerabilities

“We love Auth0 ease of use for anything authentication-related”

AuthenticationMaker says so · source ↗
AudoYour AI Career Concierge

“Provides secure access for everyone, ensuring smooth and safe login experiences for users. It’s a powerful identity platform that helps startups manage authentication without compromising on security.”

AuthenticationMaker says so · source ↗
bring.order2chaoskeep track of your stuff

“Rolling authentication yourself is a bad idea for most consumer products; Auth0 offered us a great integration into all the app platforms we run on.”

AuthenticationMaker says so · source ↗
ThriveStack v0.1Self-Service Infrastructure for the Product-Led Era

“We selected Auth0 as our first IdP partner to release core functionality for our 'Use Ours or BYO Authentication provider' functionality. Thank you Auth0 for building a feature-rich product.”

AuthenticationMaker says so · source ↗
DvinaPrivate AI that connects 120+ apps and your live databases

“We use Auth0 to manage user login, session handling, and access control across our product. It allows us to move fast while meeting enterprise-grade security requirements, including SSO and modern auth standards.”

AuthenticationMaker says so · source ↗

Open source: a project that declares Auth0 as a dependency in its public code — verifiable, but not necessarily a live product.

What makers say

13 makers on why they use Auth0, in their own words on Product Hunt.

Auth0 makes authentication effortless and enterprise-grade at the same time. For Waydev AI, it handles thousands of users and complex role-based access without adding friction to our development flow. We compared multiple identity providers, but Auth0 stood out for reliability, documentation quality, and easy integration with our AI and analytics stack. It lets us stay focused on building intelligence, not managing login flows.
WaydevSep 2026 ↗
When your AI agents are browsing your store backend, updating SKUs, and emailing customers on your behalf — identity boundaries matter a lot. Auth0's M2M token model gave us exactly the permission control we needed for safe, scoped agent actions. 👉 ClawTeams — AI agent teams built for ecommerce, with security taken seriously.
ClawTeamsSep 2026 ↗
When your AI agents are browsing your store backend, updating SKUs, and emailing customers on your behalf — identity boundaries matter a lot. Auth0's M2M token model gave us exactly the permission control we needed for safe, scoped agent actions. 👉 ClawTeams — AI agent teams built for ecommerce, with security taken seriously.
ClawTeamsJul 2026 ↗
A huge thanks to Auth0 for helping us out with the authentication flow. They were really quick with the onboarding process and even with the support tickets.
SeyftAISep 2026 ↗
For handling our user authentication with enterprise-grade security, so our users can log in instantly and focus on their data.
Ada.imSep 2026 ↗

Loved and watch-outs

Themes that recur in makers' words and Hacker News comments, each linked to what it summarises, with how Product Hunt tags its reviews.

Most loved
  • Enterprise-grade login with SSO and modern standards, so teams avoid rolling their own auth. PHHN
  • Integrates across web and mobile app platforms, with well-regarded docs and responsive onboarding. PH
  • A long track record of reliability that keeps some developers from switching. HNPH
Watch-outs
  • Contracts are expensive with escalating prices and deep vendor lock-in. HNHN 2HN 3
  • Exporting users and password hashes requires a support ticket, which makes migrations painful. HNHN 2HN 3
  • Its hosted login setup has broken password managers. HN
On Product Hunt 5.0★ · 16 reviews
ease of use 6quick onboarding 3secure access 3easy integration 2excellent documentation 2personalization 2
Read the reviews on Product Hunt ↗

Who switches

Public pull requests on GitHub since Oct 2024 whose title says "X to Y" — real code changes moving a project from one tool to another, by developers in general. Open a row to see the pull requests.

Firebase → Auth05 PRs
Supabase → Auth04 PRs
Clerk → Auth03 PRs
Auth0 → Clerk6 PRs
Auth0 → Supabase6 PRs
Auth0 → WorkOS5 PRs
Auth0 → Better Auth4 PRs
Auth0 → Firebase4 PRs

On Product Hunt, people weigh it against: Clerk, WorkOS, Stytch, PropelAuth, Descope, BoxyHQ, Kinde, Logto, Frontegg.

Questions makers ask about Auth0

Which frameworks does Auth0 have quickstarts for?

Web apps in Next.js, Nuxt, React Router, Express, Fastify, Hono, Django, FastAPI, Python, Rails, Laravel, PHP, Go, Java and ASP.NET; SPAs in React, Vue, Angular and Svelte; and native apps on iOS, Android, Flutter, React Native and Expo. source ↗

Where can my tenant's data be hosted?

On the multi-tenant public cloud you choose a region in the United States, United Kingdom, Europe, Australia, Japan or Canada. Private cloud deployments on AWS or Azure, available on Enterprise plans, offer more regions and a dedicated instance. source ↗

Which compliance certifications does Auth0 hold?

Auth0 is audited annually for SOC 2 Type 2 and ISO 27001/27017/27018, is CSA STAR certified, and describes itself as GDPR ready. It can sign a HIPAA Business Associate Agreement on request, though HIPAA is not available on Azure deployments. Reports are requested through the Auth0 Support Center. source ↗

Can I export my users, including password hashes?

Yes. You can bulk export user profiles as NDJSON or CSV from the dashboard or the Management API. Password hashes and MFA secrets are a separate request, delivered encrypted with a PGP key you provide. source ↗

How do I move existing users to Auth0 without forcing password resets?

Either bulk import them with hashes from a supported algorithm (each import file is capped at 500KB, roughly 1,000 users), or use automatic trickle migration through a custom database connection, which moves each user over the first time they log in. source ↗

Is there an uptime SLA?

Auth0 states a 99.99% availability commitment for both its public and private cloud deployments. source ↗

How do I add custom logic to the login flow?

With Actions: versioned Node.js functions attached to triggers such as pre-user-registration or post-login, which can call external services and use npm packages. They replace the older Rules and Hooks. source ↗

Is Auth0 free?

Yes — there is a free tier a small product can run on; paid use starts at $35/mo. source ↗

Is Auth0 open source or self-hostable?

Not open source, and hosted only.

Can AI coding agents work with Auth0?

It serves an llms.txt docs index; it has an official MCP server (com.auth0/mcp).

Who uses Auth0?

21 makers' products we track, each with a source, and 17 open-source projects declare it in their code. source ↗