B4n1Web
Ultra-lightweight browser engine for AI agents. 33 MCP tools, 4 SDKs, cross-platform.
Runs on your machine from its package; the steps are below.
What it does
- Reads
- Writes
- High impact
At most: only reads or looks up information.
What it costs
FreeOdel charges nothing per call. The publisher may charge for its own service.
Runs locally over stdio
This server isn't hosted — your MCP client launches it from a package registry. Use one of the commands below, or drop the config into your client (e.g. Claude Desktop).
Run
npx -y b4n1-web
MCP client config
{
"mcpServers": {
"b4n1web": {
"command": "npx",
"args": [
"-y",
"b4n1-web"
]
}
}
}Run
uvx b4n1-web
MCP client config
{
"mcpServers": {
"b4n1web": {
"command": "uvx",
"args": [
"b4n1-web"
]
}
}
}Published to NuGet as `B4n1Web` — run it with your .NET MCP host.
🌐 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/book/
🌍 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 | 0.14.0 | Bundled (musl) |
| JavaScript/TypeScript | b4n1-web | 0.14.0 | Bundled (musl) |
| Java | com.b4n1:b4n1-web | 0.14.0 | Bundled (musl) |
| C# (.NET) | B4n1Web | 0.14.0 | 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
Links
- Website: https://b4n1.com
- GitHub: https://github.com/B4N1-com/b4n1-web
- PyPI: https://pypi.org/project/b4n1-web
- npm: https://www.npmjs.com/package/b4n1-web
- NuGet: https://www.nuget.org/packages/B4n1Web
- Maven Central: https://central.sonatype.com/artifact/com.b4n1/b4n1-web
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 (BUSL-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.
