---
title: Return JSON
description: Return JSON directly from a Worker script, useful for building APIs and middleware.
image: https://edgetunnel-b2h.pages.dev/dev-products-preview.png
---

> Documentation Index  
> Fetch the complete documentation index at: https://edgetunnel-b2h.pages.dev/workers/llms.txt  
> Use this file to discover all available pages before exploring further. 

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# Return JSON

Return JSON directly from a Worker script, useful for building APIs and middleware.

If you want to get started quickly, click on the button below.

[![Deploy to Cloudflare](https://deploy.workers.cloudflare.com/button)](https://deploy.workers.cloudflare.com/?url=https://github.com/cloudflare/docs-examples/tree/main/workers/return-json)

This creates a repository in your GitHub account and deploys the application to Cloudflare Workers.

* [  JavaScript ](#tab-panel-12603)
* [  TypeScript ](#tab-panel-12604)
* [  Python ](#tab-panel-12605)
* [  Rust ](#tab-panel-12606)
* [  Hono ](#tab-panel-12607)

**JavaScript**

```js
export default {
  async fetch(request) {
    const data = {
      hello: "world",
    };


    return Response.json(data);
  },
};
```

[Run Worker in Playground](https://workers.cloudflare.com/playground#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)

**TypeScript**

```ts
export default {
  async fetch(request): Promise<Response> {
    const data = {
      hello: "world",
    };


    return Response.json(data);
  },
} satisfies ExportedHandler;
```

**Python**

```py
from workers import WorkerEntrypoint, Response
import json


class Default(WorkerEntrypoint):
    def fetch(self, request):
        data = json.dumps({"hello": "world"})
        headers = {"content-type": "application/json"}
        return Response(data, headers=headers)
```

```rs
use serde::{Deserialize, Serialize};
use worker::*;


#[derive(Deserialize, Serialize, Debug)]
struct Json {
    hello: String,
}


#[event(fetch)]
async fn fetch(_req: Request, _env: Env, _ctx: Context) -> Result<Response> {
    let data = Json {
        hello: String::from("world"),
    };
    Response::from_json(&data)
}
```

**TypeScript**

```ts
import { Hono } from "hono";


const app = new Hono();


app.get("*", (c) => {
  const data = {
    hello: "world",
  };


  return c.json(data);
});


export default app;
```

```json
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```