alejandroqh

alejandroqh / browser39

Public

A headless web browser for AI agents. Converts pages to token-optimized Markdown locally. Single binary, no external browser, no fees.

agent agent-skills agentic-ai claude-code headl
14
2
100% credibility
Found Apr 04, 2026 at 14 stars -- GitGems finds repos before they trend. Get early access to the next one.
Sign Up Free
AI Analysis
Rust
AI Summary

browser39 is a compact headless web browser for AI agents that fetches web pages, runs JavaScript, handles forms and sessions, and converts content to token-optimized Markdown entirely locally.

How It Works

1
🔍 Discover browser39

You hear about a simple tool that lets your AI assistant browse the web and read pages without wasting time or money on big downloads.

2
📥 Get it set up

Download the tiny app and install it on your computer in seconds—no complicated steps needed.

3
Connect your way
🤖
Link to AI chat

Pair it with your AI helper so it can fetch real web content on command.

💻
Use standalone

Run quick web grabs directly without any AI.

4
🌐 Fetch smart web pages

Ask for a webpage and instantly get a clean, easy-to-read version perfect for your AI—saving tons of space and effort.

5
🔄 Explore and interact

Click links, fill out forms, or manage saved info like cookies to keep browsing smoothly.

✅ AI browses like magic

Your AI now surfs the web efficiently, staying logged in and getting exactly what it needs every time.

Sign up to see the full architecture

4 more

Sign Up Free

Star Growth

See how this repo grew from 14 to 14 stars Sign Up Free
Repurpose This Repo

Repurpose is a Pro feature

Generate ready-to-use prompts for X threads, LinkedIn posts, blog posts, YouTube scripts, and more -- with full repo context baked in.

Unlock Repurpose
AI-Generated Review

What is browser39?

browser39 is a Rust-built headless web browser designed for AI agents, delivering pages as token-optimized Markdown without external browsers or cloud fees. It fetches sites, executes JavaScript, handles cookies/sessions with encryption, queries DOM via CSS/JS, fills forms, and supports auth profiles—all in a single ~22MB binary. Agents get structured content previews first, slashing LLM token waste on nav junk or full dumps.

Why is it gaining traction?

Unlike Playwright or Puppeteer needing Chromium installs (280MB+), or raw HTTP lacking JS/DOM smarts, browser39 runs standalone with boa_engine JS and scraper parsing. Token savings shine: Wikipedia sections drop from 14k to 196 tokens, with lossless MD including links/citations. MCP/JSONL transports plug straight into Claude Desktop/Code or OpenClaw, plus CLI watch/batch modes for any lang.

Who should use this?

AI agent builders scripting web tasks in Claude Code/OpenClaw, or backend devs needing a lightweight github headless browser for scraping/logins without deps. Ideal for LLM toolchains handling dynamic sites—forums, dashboards, APIs—where sessions persist across calls.

Verdict

Promising niche tool for agent web access (install via cargo/OpenClaw plugin), with strong docs/examples and tests, but early maturity at 14 stars/1.0% credibility means watch for edge cases. Try the CLI fetch first if you're prototyping headless webview flows.

(198 words)

Sign up to read the full AI review Sign Up Free

Similar repos coming soon.