poweredBy

Kind: Function

Source: src/middleware/powered-by/index.ts

Part of: Middleware

Powered By Middleware for Hono.

poweredBy creates Hono middleware that adds an X-Powered-By response header. It runs after downstream middleware and handlers, allowing the header value to be configured with serverName.

Signature

ts
function poweredBy(options: PoweredByOptions): MiddlewareHandler

Parameters

Returns: MiddlewareHandler

Diagram

mermaid
graph LR
  A[Incoming request] --> B[poweredBy middleware]
  B --> C[Downstream middleware and route handler]
  C --> D[Set X-Powered-By response header]
  D --> E[Response]

Usage

ts
import { Hono } from 'hono'
import { poweredBy } from 'hono/powered-by'

const app = new Hono()

app.use('*', poweredBy({ serverName: 'My API' }))

app.get('/', (c) => {
  return c.text('Hello')
})

export default app

AI Coding Instructions

• Register poweredBy() with app.use() so it applies to the intended routes.
• Pass serverName when the default Hono header value should be replaced.
• Keep await next() in the middleware flow so downstream handlers run before the response header is set.
• Check for other middleware that sets X-Powered-By, since later header writes can replace earlier values.