hono

Hono Skill

Build Hono web applications. This skill provides inline API knowledge for AI. Use npx hono request to test endpoints. If the hono-docs MCP server is configured, prefer its tools for the latest documentation over the inline reference.

Hono CLI Usage

Request Testing

Test endpoints without starting an HTTP server. Uses app.request() internally.

# GET request
npx hono request [file] -P /path

# POST request with JSON body
npx hono request [file] -X POST -P /api/users -d '{"name": "test"}'

Note: Do not pass credentials directly in CLI arguments. Use environment variables for sensitive values. hono request does not support Cloudflare Workers bindings (KV, D1, R2, etc.). When bindings are required, use workers-fetch instead:

npx workers-fetch /path
npx workers-fetch -X POST -H "Content-Type:application/json" -d '{"name":"test"}' /api/users

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Hono API Reference

App Constructor

import { Hono } from 'hono'

const app = new Hono()

// With TypeScript generics
type Env = {
  Bindings: { DATABASE: D1Database; KV: KVNamespace }
  Variables: { user: User }
}
const app = new Hono<Env>()

Routing Methods

app.get('/path', handler)
app.post('/path', handler)
app.put('/path', handler)
app.delete('/path', handler)
app.patch('/path', handler)
app.options('/path', handler)
app.all('/path', handler) // all HTTP methods
app.on('PURGE', '/path', handler) // custom method
app.on(['PUT', 'DELETE'], '/path', handler) // multiple methods

Routing Patterns

// Path parameters
app.get('/user/:name', (c) => {
  const name = c.req.param('name')
  return c.json({ name })
})

// Multiple params
app.get('/posts/:id/comments/:commentId', (c) => {
  const { id, commentId } = c.req.param()
})

// Optional parameters
app.get('/api/animal/:type?', (c) => c.text('Animal!'))

// Wildcards
app.get('/wild/*/card', (c) => c.text('Wildcard'))

// Regexp constraints
app.get('/post/:date{[0-9]+}/:title{[a-z]+}', (c) => {
  const { date, title } = c.req.param()
})

// Chained routes
app
  .get('/endpoint', (c) => c.text('GET'))
  .post((c) => c.text('POST'))
  .delete((c) => c.text('DELETE'))