API in Browser

Turn any browser tab into a REST API server. Zero backend needed.

📦 Install • 📖 Docs • 🎯 Examples • 💬 Community

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🎯 What This Is

import API from 'api-in-browser';

const api = new API();

api.get('/hello', (req, res) => {
  res.json({ message: 'Hello from your browser!' });
});

api.listen(); // API running — no server needed

A framework that transforms your browser into a fully functional REST API server using:

Feature	Technology
🔄 Request Handling	Polling / Service Workers
💾 Storage	IndexedDB (60GB+)
🔗 Cross-Tab	postMessage API
⚡ Concurrency	Web Workers

Perfect for:

• 🤖 Telegram bots running in a browser tab
• 💼 Local-first apps with zero backend cost
• 🧪 Prototyping APIs without servers
• 🌐 P2P applications
• ⚡ Edge computing experiments

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🚀 Quick Start

Installation

npm install api-in-browser

Or via CDN:

<script type="module">
  import API from 'https://cdn.jsdelivr.net/npm/api-in-browser/src/index.js';
</script>

Your First API (30 seconds)

import API from 'api-in-browser';

const api = new API({
  polling: true,
  pollingInterval: 2000
});

api.get('/users', async (req, res) => {
  const users = await api.storage.getAll('users');
  res.json(users);
});

api.post('/users', async (req, res) => {
  const user = req.body;
  await api.storage.set('users', user.id, user);
  res.json({ success: true, user });
});

api.listen(() => console.log('🚀 API running in browser'));

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✨ Features

🎯 REST API in Browser

• GET, POST, PUT, DELETE, PATCH
• Query parameters & body parsing
• Response helpers: json(), text(), setStatus()

💾 Built-in Storage

• IndexedDB wrapper with dead-simple API
• 60GB+ quota (Chrome/Firefox)
• Persistent across sessions — no setup

🤖 Telegram Bot Support

• Long-polling built-in — no webhook server needed
• Message queue management
• Handler-based routing (/start, /help, etc.)

🔗 Cross-Tab Communication

• Broadcast updates via postMessage
• Shared state between tabs
• Event synchronization

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💡 Examples

1️⃣ Simple Counter API

import API from 'api-in-browser';

const api = new API();
let counter = 0;

api.get('/counter', (req, res) => {
  res.json({ count: counter });
});

api.post('/counter/increment', (req, res) => {
  counter++;
  res.json({ count: counter });
});

api.listen();

2️⃣ Telegram Bot

import API from 'api-in-browser';

const api = new API({ polling: true, pollingInterval: 2000 });

api.telegramBot('YOUR_BOT_TOKEN', {
  '/start': (msg) => `Hello ${msg.from.first_name}!`,
  '/help':  () => 'Commands: /start, /help, /ping',
  '/ping':  () => 'Pong! 🏓'
});

api.listen();

3️⃣ Todo List with Storage

import API from 'api-in-browser';

const api = new API();

api.get('/todos', async (req, res) => {
  res.json(await api.storage.getAll('todos'));
});

api.post('/todos', async (req, res) => {
  const todo = { id: Date.now(), ...req.body };
  await api.storage.set('todos', todo.id, todo);
  res.json(todo);
});

api.delete('/todos/:id', async (req, res) => {
  await api.storage.delete('todos', req.params.id);
  res.json({ success: true });
});

api.listen();

📂 More Examples

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⚠️ Limitations

Aspect	Reality	Use Case
Uptime	Runs while tab is open	✅ Personal tools
Concurrency	~10-50 req/sec	✅ Small groups
Storage	60GB (Chrome/Firefox)	✅ Local-first
Mobile	May pause in background	⚠️ Desktop recommended
Security	Your IP = API IP	✅ Private use

Perfect for: Personal bots, MVPs, local-first apps, P2P experiments.

Not suitable for: Production high-traffic APIs, apps requiring 24/7 uptime.

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📖 API Reference

Initialization

const api = new API(options);

Options:

Option	Type	Default	Description
polling	boolean	false	Enable polling mode
pollingInterval	number	2000	Polling frequency (ms)
cors	boolean	true	Enable CORS headers
storage	string	'indexeddb'	Storage backend
debug	boolean	false	Debug logging

Routes

api.get(path, handler)
api.post(path, handler)
api.put(path, handler)
api.delete(path, handler)
api.patch(path, handler)

Handler: (req, res) => { } where:

• req: { method, path, params, query, body }
• res: { json(), text(), setStatus() }

Storage

await api.storage.set(store, key, value)
await api.storage.get(store, key)
await api.storage.getAll(store)
await api.storage.delete(store, key)
await api.storage.clear(store)

📚 Full API Documentation

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🌟 Philosophy

"The browser is the most distributed computer on Earth. Let's use it."

This framework embraces Informatique Réalitaire (Reality Computing) — building systems that work with physical constraints rather than against them.

No pretense of being a server. It's a browser that behaves like a server when needed.

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👨‍💻 Author

Daouda Abdoul Anzize — Computational Paradigm Designer

"I don't build apps. I build the clay others use to build apps."

24 ans • Cotonou, Bénin → Global Remote

What I Create:

• Meta-Architectures → Systems that absorb multiple programming paradigms
• Universal Protocols → Standards for distributed systems reliability
• Emergent Computing → Solutions arising from simple physical laws
• AI Infrastructure → Collective intelligence platforms

Featured Research:

• NEXUS AXION — Universal computational framework
• Nexus Backpressure Protocol — 60%+ latency reduction in distributed systems
• Informatique Réalitaire (IR) — Framework for artificial cognition
• Weak Hardware Booster — 95% CPU reduction via semantic collision convergence
• API in Browser — REST API server running inside a browser tab

Stack: Python · Rust · C++ · JavaScript · Go

🎯 Seeking: Research engineering · AI infrastructure · Protocol design (Q1 2026)

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📄 License

MIT © 2026 Daouda Abdoul Anzize — Use freely, attribution appreciated.

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🙏 Acknowledgments

Inspired by the Local-First movement, CRDTs, Service Workers, and IndexedDB as underrated infrastructure.

Built with the philosophy that constraints breed creativity.

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Made with ❤️ by Nexus Studio

Proof that creativity transcends credentials