B4n1Web — Agentic Browser Engine

Ultra-lightweight headless browser for AI agents. Single Rust binary, 4 language SDKs. Navigate URLs, extract structured content (markdown, links, screenshots), and build autonomous agent workflows.

Quick Start

1. Install the binary

# One-liner (Linux/macOS/Windows via WSL)
curl -sL https://b4n1.com/install | bash

Or use your preferred package manager:

# Python
pip install b4n1-web

# JavaScript/TypeScript
npm install b4n1-web

# Java (Maven)
# Add to pom.xml:
# <dependency>
#   <groupId>com.b4n1</groupId>
#   <artifactId>b4n1-web</artifactId>
#   <version>0.9.5</version>
# </dependency>

# C# .NET
dotnet add package B4n1Web

2. Extract content from any URL

from b4n1web import AgentBrowser

browser = AgentBrowser()
page = browser.goto("https://example.com")

print(page.url)       # URL
print(page.markdown)  # Clean markdown content
print(page.links)     # All extracted links
print(page.screenshot) # Base64 PNG (if available)
print(page.js_output)  # JavaScript output (if evaluated)

browser.close()

import { AgentBrowser } from 'b4n1-web';

const browser = new AgentBrowser();
const page = await browser.gotoAsync('https://example.com');

console.log(page.url);
console.log(page.markdown);
console.log(page.links);

await browser.close();

using B4N1Web;

var browser = new AgentBrowser();
var page = browser.Goto("https://example.com");

Console.WriteLine(page.Url);
Console.WriteLine(page.Markdown);
Console.WriteLine(page.Links);

browser.Close();

import com.b4n1.AgentBrowser;
import com.b4n1.Page;

AgentBrowser browser = new AgentBrowser();
Page page = browser.goto("https://example.com");

System.out.println(page.getUrl());
System.out.println(page.getMarkdown());
System.out.println(page.getLinks());

browser.close();

What You Get

Browser Modes

SDK Matrix

All platforms = linux-amd64, linux-arm64, macos-x64, macos-arm64, windows-amd64, windows-arm64

Next Steps

• Installation — Detailed install instructions for each platform
• Browser Modes — Choose the right mode for your use case
• Python SDK — Complete Python API reference
• JavaScript SDK — Complete JS/TS API reference
• C# SDK — Complete C# API reference
• Java SDK — Complete Java API reference
• CLI Reference — Command-line interface
• MCP Integration — Use with AI agents via MCP