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

How do I install B4n1Web?

Clone B4n1Web from https://github.com/B4N1-com/b4n1-web and configure it as an MCP server in your client (Claude Desktop, Cursor, or VS Code).

Is B4n1Web open source?

Yes, B4n1Web is open source under the NOASSERTION license. Source code is available at https://github.com/B4N1-com/b4n1-web.

What category does B4n1Web belong to?

B4n1Web is listed under AI & ML MCP servers on MCPFind.

B4n1Web — MCP Server for AI & ML

🌐 B4n1Web — Agentic Browser Engine

Ultra-lightweight headless browser for AI agents.

Single Rust 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

# 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

from b4n1web import AgentBrowser

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

MCP Server

# 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

Original Source Code: 100% Proprietary and Closed Source (All Rights Reserved by Bani Montoya).
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.

Set up in your AI client

AI clientOperating system

Merge this template into ~/Library/Application Support/Claude/claude_desktop_config.json. Keep existing servers. Add any arguments, credentials, and permissions required by the maintainer; this template has not been install-tested.

json

{
  "mcpServers": {
    "io-github-b4n1-com-b4n1web": {
      "command": "npx",
      "args": [
        "-y",
        "b4n1-web"
      ]
    }
  }
}

Restart Claude Desktop completely for changes to take effect. Confirm the server appears connected in the client’s tool list, then try a read-only example from its documentation.

Claude Desktop setup reference

Compatible MCP Clients

B4n1Web works with any MCP-compatible client. Copy the config snippet from the Configuration section above and add it to the file shown for your client, then restart the application.

Claude Desktop~/Library/Application Support/Claude/claude_desktop_config.jsonRestart Claude Desktop completely for changes to take effect.

Cursor~/.cursor/mcp.jsonRestart Cursor for changes to take effect.

VS Code.vscode/mcp.jsonReload VS Code window for changes to take effect.

Windsurf~/.codeium/windsurf/mcp_config.jsonRestart Windsurf for changes to take effect.

Claude Code.mcp.jsonSave at the project root, then start Claude Code in that project and review the MCP server approval prompt. Keep real credentials out of shared files.

B4n1Web