# Bun Build an HTTP server using Express and Bun

> Build an HTTP server using Express and Bun

- Skill: `jarle/bun-build-an-http-server-using-express-and-bun` (Agent Skill)
- Install (CLI): `npx skillmds@latest add jarle/bun-build-an-http-server-using-express-and-bun`
- Raw SKILL.md: https://api.skillmd.com/api/skills/jarle/bun-build-an-http-server-using-express-and-bun/raw
- Safety review: pending (external: skill-scanner PASS, skillspector PASS)
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Coding & Dev Tools
- Author: jarle (https://skillmd.com/u/jarle)
- Updated: 2026-09-21
- Page: https://skillmd.com/skills/jarle/bun-build-an-http-server-using-express-and-bun

---


# Build an HTTP server using Express and Bun

Express and other major Node.js HTTP libraries should work out of the box. Bun implements the [`node:http`](https://nodejs.org/api/http.html) and [`node:https`](https://nodejs.org/api/https.html) modules that these libraries rely on.

<Note>
  Refer to the [Runtime > Node.js APIs](/runtime/nodejs-compat#node-http) page for more detailed compatibility
  information.
</Note>

```sh terminal icon="terminal" theme={"theme":{"light":"github-light","dark":"dracula"}}
bun add express
```

***

To define a simple HTTP route and start a server with Express:

```ts server.ts icon="https://mintcdn.com/bun-1dd33a4e/nIz6GtMH5K-dfXeV/icons/typescript.svg?fit=max&auto=format&n=nIz6GtMH5K-dfXeV&q=85&s=5d73d76daf7eb7b158469d8c30d349b0" theme={"theme":{"light":"github-light","dark":"dracula"}}
import express from "express";

const app = express();
const port = 8080;

app.get("/", (req, res) => {
  res.send("Hello World!");
});

app.listen(port, () => {
  console.log(`Listening on port ${port}...`);
});
```

***

To start the server on `localhost`:

```sh terminal icon="terminal" theme={"theme":{"light":"github-light","dark":"dracula"}}
bun server.ts
```