B4n1Web

Official

by B4N1-com · Python

Ultra-lightweight browser engine for AI agents. 33 MCP tools, 4 SDKs, cross-platform.

io.github.B4N1-com/b4n1web — MCP Server

This MCP server provides access to B4n1Web, an “ultra-lightweight browser engine for AI agents.” The server lists 33 MCP tools and supports 4 SDKs, and it is stated to be cross-platform.

🛠️ Key Features

Ultra-lightweight browser engine for AI agents
33 MCP tools
4 SDKs
Cross-platform support

🚀 Use Cases

Enabling AI agents to interact with browser-rendered content via MCP tools
Integrating a lightweight browser engine across different development environments using the provided SDKs

⚡ Developer Benefits

Tool-based browser capabilities exposed as MCP functionality (33 tools)
Multi-SDK integration (4 SDKs) and cross-platform usage

⚠️ Limitations

The provided catalog data does not specify tool names, supported platforms in detail, authentication, or configuration options.

README.md5 KBView on GitHub

🌐 B4n1Web — Agentic Browser Engine

Ultra-lightweight headless browser for AI agents.

PyPI npm Maven Central

Single native binary · 4 language SDKs · 33 MCP tools. Navigate URLs, extract structured content (markdown, links, screenshots), and build autonomous agent workflows.

📖 Full documentation: https://B4N1-com.github.io/b4n1-web/

🌍 Languages / Idiomas / 语言


🇬🇧 English	🇪🇸 Español	🇫🇷 Français	🇩🇪 Deutsch	🇵🇹 Português	🇮🇹 Italiano
🇨🇳 简体中文	🇯🇵 日本語	🇰🇷 한국어	🇷🇺 Русский	🇸🇦 العربية	🇮🇳 हिन्दी

🖥 Platform Support

8 pre-compiled binaries — works everywhere:

Platform	Architectures	Binary
Linux	x86_64, aarch64, i686	`musl` (static, no glibc)
macOS	x86_64, arm64	`universal`
Windows	x86_64, arm64, i686	`MSVC`

Quick Start

bash

# Install the binary
curl -sL https://raw.githubusercontent.com/B4N1-com/b4n1-web/master/scripts/install.sh | bash

# Or use your preferred package manager
pip install b4n1-web
npm install b4n1-web
dotnet add package B4n1Web
# Java: add dependency from Maven Central

python

from b4n1web import AgentBrowser

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

MCP Server

bash

# stdio mode (default)
b4n1web mcp
npx b4n1-web mcp
uvx b4n1-web mcp

SDK Matrix

Language	Package	Version	Binary
Python	`b4n1-web`	0.13.0	Bundled (musl)
JavaScript/TypeScript	`b4n1-web`	0.13.0	Bundled (musl)
Java	`com.b4n1:b4n1-web`	0.13.0	Bundled (musl)
C# (.NET)	`B4n1Web`	0.13.0	Bundled (musl)

Browser Modes

Mode	Description	RAM	Startup
Light	HTTP fetch + HTML parsing	~15MB	Instant
JS	Light + JavaScript extraction	~15MB	Instant
Render	Full Chromium + screenshots	~100MB	~2s

Features

33 MCP tools for AI agent integration
4 language SDKs (Python, JS, Java, C#) with bundled binary
Self-contained binary ~12MB, no dependencies
Static linking (musl) — works on any Linux, no glibc required
Three modes: Light (instant), JS (scripts), Render (Chromium)
Security shield: domain filtering, safe browsing
Network interception: block resources, mock responses
MCP Server: stdio transport, no port needed

Documentation

📖 Full documentation — mdBook
Agent Reference — AI agent integration
MCP Tools — MCP registry

License & Commercial Terms

Binaries & SDK Tools: Provided under the Business Source License 1.1 (BSL 1.1).
- Free Tier: 100% free for development, evaluation, testing, personal projects, and startups with gross annual revenue < $100,000 USD.
- Mandatory Enterprise B2B License: Required for government agencies, public bidding projects, and enterprises with gross annual revenue >= $100,000 USD.

For Enterprise B2B licensing inquiries, visit https://b4n1.com/licensing or email b4n1@b4n1.com.

Install

Add to VS Code Add to Cursor

claude_desktop_config.json

json

{
  "mcpServers": {
    "b4n1web": {
      "command": "npx",
      "args": [
        "-y",
        "b4n1-web@0.12.1"
      ]
    }
  }
}