Verify the active user’s permissions
Clerk provides two kinds of helpers for authorization:
protect
helpers are opinionated and will block additional processing for unauthorized users, either by not rendering children or by throwing errors. The<Protect />
component and the experimentalauth().protect()
method fall into this category.has
helpers are more composable and flexible. They allow you to check and see what permissions a user has. You can decide what to do if the user lacks the permission.
Both kinds of helpers can check a user's role and permissions. The recommended approach is to verify a user's permissions. Roles can be added and removed and their permissions changed. Authorizing by permissions is explicit.
has()
Clerk's has()
function can be used on both the frontend and the backend to determine if the user has a role or permission.
has()
can be used anywhere that Clerk returns an Authentication
object:
auth()
in Next.js App RouteruseAuth()
in Client Components, including during SSRgetAuth(request)
in server contexts outside of the App Router and SSR (Remix Loaders, Node, Express, Fastify, etc)
Authorization in Client Components
The examples below work for both SSR and CSR. Examples are written for Next.js App Router but they are supported by any React meta framework, such as Remix or Gatsby.
The following snippet uses Clerk's <Protect />
component to only render the form for users with the org:team_settings:manage
permission.
/app/dashboard/settings/form.tsx'use client'; import { Protect } from "@clerk/nextjs"; export function SettingsForm(){ return ( <Protect permission="org:team_settings:manage" fallback={<p>You are not allowed to see this section.</p>} > <form> .... </form> </Protect> ) }
The useAuth()
hook can help you access what permissions a user has by using has()
. In the example below, has({ permission: "org:team_settings:manage" })
returns false
if the user does not have the org:team_settings:manage
permission.
/app/dashboard/settings/form.tsx'use client'; import { useAuth } from "@clerk/nextjs"; export function SettingsForm(){ const { has } = useAuth(); const canManageSettings = has({ permission: "org:team_settings:manage" }); if(!canManageSettings) return null; return ( <form> //... </form> ) }
Authorization in React Server Components
The following example uses has()
to inspect a user's permissions granularly. If the user doesn't have the org:team_settings:read
permission, the component returns null
instead of rendering its children.
/app/dashboard/settings/layout.tsximport type { PropsWithChildren } from "react"; import { auth } from "@clerk/nextjs/server"; export default function SettingsLayout(props: PropsWithChildren){ const { has } = auth() const canAccessSettings = has({permission: "org:team_settings:read"}); if(!canAccessSettings) return null; return props.children }
auth().protect()
will throw a notFound
Next.js error if authorization checks fail.
/app/dashboard/settings/layout.tsximport type { PropsWithChildren } from "react"; import { auth } from "@clerk/nextjs/server"; export default function SettingsLayout(props: PropsWithChildren){ const { userId } = auth().protect({permission: "org:team_settings:read"}) return props.children }
The following snippet uses <Protect />
's condition
prop to conditionally render its children if the user has the org:team_settings:read
permission.
/app/dashboard/settings/layout.tsximport type { PropsWithChildren } from "react"; import { Protect } from "@clerk/nextjs"; export default function SettingsLayout(props: PropsWithChildren){ return ( <Protect permission="org:team_settings:read" > {props.children} </Protect> ) }
Authorization in endpoints
import { auth } from "@clerk/nextjs/server"; export default function ServerComponent() { async function myAction() { 'use server' const { has } = auth(); const canManage = has({permission:"org:team_settings:manage"}); ... // Perform a DB operation ... } }
auth().protect()
will throw a notFound
Next.js error if authorization checks fail.
Using auth().protect()
import { useAuth } from "@clerk/nextjs"; export const POST = () => { const { userId } = auth().protect({ permission: "org:team_settings:manage" }) return users.createTeam(userId); }
Using has()
import { useAuth } from "@clerk/nextjs"; export const GET = () => { const { userId, has } = auth(); if(!userId){ return Response.json({error: "Unathorized"}, {status: 401}) } if(!has({permission: "org:team_settings:read"})){ return Response.json({error: "Forbidden"}, {status: 403}) } return users.getTeams(userId) }
import { getAuth } from "@clerk/nextjs/server"; export default async function handler(req: NextApiRequest) { const { userId, has } = await getAuth(req); if (!userId) return res.status(401); if(!has({permission: "org:team_settings:read"})) return res.status(403) return users.getTeams(userId) }
Authorization in Remix Loaders
export const loader: LoaderFunction = async args => { const { has } = await getAuth(args); if(has({permission: "org:team_settings:manage"})){ return redirect('/request-access'); } return {}; }; export default function Settings() { return ( <div> <h1>Settings Page</h1> </div> ); }
Authorization in JS SDK
If you are not using React or any of the meta-frameworks we support, there's a good chance that you are using Clerk.js directly. In that case, the following example can help.
import Clerk from '@clerk/clerk-js' const clerk = new Clerk(...) await clerk.load(...) const canManageSettings = clerk.session.checkAuthorization({ permission: "org:team_settings:manage" })
Authorize with roles
Performing role checks is not considered a best-practice and developers should avoid it as much as possible. Usually, complex role checks can be refactored with a single permission check.
You can pass a role
the same way you can pass a permission
in all the examples above.
The following example uses <Protect />
's condition
prop to conditionally render its children if the user is either an org:admin
or an org:billing_manager
.
/app/dashboard/settings/layout.tsximport type { PropsWithChildren } from "react"; import { Protect } from "@clerk/nextjs"; export default function SettingsLayout(props: PropsWithChildren){ return ( <Protect condition={has => has({role: "org:admin"}) || has({role: "org:billing_manager"})} > {props.children} </Protect> ) }
auth().protect()
will throw a notFound
Next.js error if authorization checks fail.
/app/dashboard/settings/layout.tsximport type { PropsWithChildren } from "react"; import { auth } from "@clerk/nextjs/server"; export default function SettingsLayout(props: PropsWithChildren){ const { userId } = auth().protect(has => has({role: "org:admin"}) || has({role: "org:billing_manager"})) return props.children }
The following snippet uses useAuth()
to inspect a user's roles granularly. If the user doesn't have either an org:admin
or an org:billing_manager
role, the component returns null
instead of rendering its children.
/app/dashboard/settings/form.tsx'use client'; import { useAuth } from "@clerk/nextjs"; export function SettingsForm(){ const { has } = useAuth(); const canAccessSettings = has({role: "org:admin"}) || has({role: "org:billing_manager"}) if(!canManageSettings) return null; return ( <form> //... </form> ) }