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platform-guidesAzure Functions

Last Updated: 3/11/2026

Azure Functions

Azure Functions  is Microsoft Azure’s serverless platform. Hono works on Azure Functions V4 with Node.js 18+ using the Azure Functions Adapter .

Install CLI

Install Azure Functions Core Tools :

macOS:

brew tap azure/functions
brew install azure-functions-core-tools@4

Setup

Create a TypeScript Node.js V4 project:

func init --typescript

Change the default route prefix in host.json:

{
  "extensions": {
    "http": {
      "routePrefix": ""
    }
  }
}

Install dependencies:

npm install @marplex/hono-azurefunc-adapter hono

Hello World

Create src/app.ts:

import { Hono } from 'hono'
 
const app = new Hono()
 
app.get('/', (c) => c.text('Hello Azure Functions!'))
 
export default app

Create src/functions/httpTrigger.ts:

import { app } from '@azure/functions'
import { azureHonoHandler } from '@marplex/hono-azurefunc-adapter'
import honoApp from '../app'
 
app.http('httpTrigger', {
  methods: ['GET', 'POST', 'DELETE', 'PUT'],
  authLevel: 'anonymous',
  route: '{*proxy}',
  handler: azureHonoHandler(honoApp.fetch),
})

Run Locally

Start the development server:

npm run start

Access http://localhost:7071 in your browser.

Deploy

Build the project:

npm run build

Deploy to Azure (replace <YourFunctionAppName>):

func azure functionapp publish <YourFunctionAppName>

See Create supporting Azure resources  before deploying.

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