# Use Clerk with Hono middleware

## Install the middleware

To install the Clerk middleware for Hono, follow the instructions provided to set up and configure the middleware in Hono.

```bash
npm i hono @hono/clerk-auth @clerk/backend
```

## Configure the middleware

Before you start using the Clerk middleware, you'll need to set the following environment variables:

```
CLERK_SECRET_KEY=<your-secret-key>
CLERK_PUBLISHABLE_KEY=<your-publishable-key>
```

## Use the middleware

Here is a quick example on how to use the Clerk middleware for Hono:

```typescript
import { clerkMiddleware, getAuth } from '@hono/clerk-auth'
import { Hono } from 'hono'

const app = new Hono()

app.use('*', clerkMiddleware())
app.get('/', (c) => {
  const auth = getAuth(c)

  if (!auth?.userId) {
    return c.json({
      message: 'You are not logged in.',
    })
  }

  return c.json({
    message: 'You are logged in!',
    userId: auth.userId,
  })
})

export default app
```

And that's it. Your app is now secured and running on the edge. Find more about Clerk's Hono middleware on [GitHub](https://github.com/honojs/middleware/tree/main/packages/clerk-auth).