Security & Identity · Integration
Auth0
Add Auth0 to your product for your customers, and give your AI agents governed access to it.
Auth0 splits into two APIs, and knowing which one you are on is the first thing to get right. The Authentication API is what end users hit when they log in. The Management API is where your product reads and writes users, identities, connections, roles and permissions, organizations, and the actions that run mid-login. Only the second is what an integration like this uses, and it is the one whose rate limit is tight enough to shape your design, so a bulk user reconciliation gets paced and cached instead of looped. Tenants are separate too, with development and production behaving as entirely different tenants. fastn manages per-tenant client credentials, paces Management API calls and follows Auth0's changes.
In your product
Embedded for your customers. Per-tenant auth, no per-customer code, maintained by fastn.
Let a customer connect their own tenant so your product manages users in the directory they already run.
Read roles and permissions to decide what somebody can do in your product once they have signed in.
Create or update a user through the Management API without touching the login flow itself.
Pace a bulk reconciliation deliberately, because the Management API allowance is easy to spend all at once.
For your AI agents
Governed, audited access for the agents you build, through the MCP server.
An agent reports which users hold a role they should no longer have.
An agent assigns a permitted role, and the tenant and user it changed are both logged.
An agent reads sign-in logs to explain why a login was refused.
Example prompt
Which users in this tenant hold the admin role, and when did each of them last sign in?
Set up Auth0 in 4 steps
- 01Enable the Auth0 connector from your fastn dashboard.
- 02Have each customer authorise their own Auth0 account, so calls run under their credentials rather than a shared key.
- 03Decide which users, groups and roles your product needs, map those fields, then enable the actions and triggers you want.
- 04Call it from your product and expose it to your agents through the same governed connection.
Why teams use the Auth0 integration
What you get by embedding it with fastn instead of building it yourself.
- Ship an Auth0 integration without building it. Your customers connect their own Auth0 account inside your product and work their users, groups and roles there, with no per-customer code on your side.
- Handle the part that actually costs time: the blast radius of an error is large, so least-privilege and auditability are non-negotiable. fastn owns the auth, token refresh, rate limits, pagination and breaking-change fixes, so an Auth0 update is not your on-call problem.
- One integration serves your product and your agents. The same governed Auth0 connection powers in-product features and gives AI agents scoped, audited access, so you keep access and identity in step across a customer's estate without wiring it twice.
Used by these teams
Compare with
Okta
Amazon Cognito
KeycloakOften used alongside
Tools the same teams tend to run next to Auth0, across other categories.
ServiceNow
Datadog
PagerDutyAuth0 integration FAQ
How do I add an Auth0 integration to my product?
Enable the Auth0 connector in your fastn dashboard, then let each customer authenticate their own Auth0 account. fastn handles the OAuth flow, token storage and refresh per tenant, so there is no Auth0 client code in your app and no per-customer branch in your codebase. Setup is 4 steps.
Do my customers each connect their own Auth0 account?
Yes. Every connection is scoped to the individual customer, so each authorises their own Auth0 account and only ever sees their own users, groups and roles. That per-tenant isolation is the point of an embedded integration: you support the long tail of customer setups without maintaining an integration per customer.
Can AI agents use this Auth0 integration?
Yes. The same connection is exposed to your agents through the fastn MCP gateway, with permissions scoped per tenant and every call audited. An agent reports which users hold a role they should no longer have.
Who maintains the Auth0 integration?
fastn does. When Auth0 changes an endpoint, deprecates a field or alters its auth, the fix lands in the connector rather than in your backlog, and your customers' connections keep working.
What permissions does the Auth0 integration need?
Only the scopes required for the actions you enable. Each customer grants access to their own Auth0 tenant, permissions are scoped per tenant, and every call is recorded so an access change can be traced to its source.
Can access changes be automated safely?
Yes. Provisioning and deprovisioning can be driven from your product or an agent within governed permissions, with every action audited, which is what makes automated access changes reviewable after the fact.
What can I build with the Auth0 integration?
A common starting point: let a customer connect their own tenant so your product manages users in the directory they already run. Teams also use it for the other use cases listed above, and expose it to agents for governed reads and writes.
How much does the Auth0 integration cost?
It is included. Pricing is based on connected accounts, not on how many connectors you enable, so adding Auth0 does not change your per-connector cost. You can start free with 3 connected accounts.
Add Auth0 to your product
Start free with 3 connected accounts. No sales call required, and no per-customer integration code.