B4n1web
@B4N1-com
About B4n1web
B4n1Web is an ultra-lightweight agentic browser engine (11MB) for AI agents.
Basic information
Config
Add this server to your MCP-compatible client using the configuration below.
{
"mcpServers": {
"b4n1web": {
"command": "b4n1web",
"args": [
"mcp"
]
}
}
}Tools
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Overview
What is B4n1web?
B4n1web is an ultra-lightweight agentic browser engine that provides headless browser automation via an MCP (Model Context Protocol) server. It ships as an 11MB binary or SDKs for Python, JavaScript, C#, and Java, and offers 33 MCP tools for navigation, content extraction, network interception, state management, device emulation, file handling, and performance measurement. It is designed for developers and AI agents needing a minimal, cross-platform browser automation layer.
How to use B4n1web?
Install the standalone binary or SDK (e.g., pip install b4n1-web). For MCP usage, run b4n1web mcp in a terminal, then connect via any MCP client (stdio mode, no port needed). Alternatively, use the SDK directly (e.g., from b4n1web import AgentBrowser) to script browser actions in code.
Key features of B4n1web
- Ultra-lightweight binary (11MB)
- 4 SDKs: Python, JavaScript, C#, Java
- 33 MCP tools for full browser automation
- SQLite-based SecurityShield for safe browsing
- Multiple modes: Light, JS, Render
- Cross-platform: Linux, macOS, Windows
Use cases of B4n1web
- Automate web scraping and data extraction with minimal overhead
- Run headless browser tasks for AI agents without heavy dependencies
- Intercept and modify network requests in automated test suites
- Emulate devices and collect performance metrics for web apps
- Manage browser sessions and cookies in CI/CD pipelines
FAQ from B4n1web
What modes does B4n1web offer?
Light mode does HTTP fetch + HTML parsing (~11MB), JS mode adds JavaScript tag extraction (~11MB), and Render mode uses full headless Chromium with screenshot support.
What transport does the MCP server use?
The MCP server uses stdio by default; no port configuration is needed.
What are the system requirements?
B4n1web runs on Linux (amd64/arm64), macOS (x64/arm64), and Windows (amd64). The binary is 11MB; Render mode requires Chromium.
How do I start the MCP server?
Run b4n1web mcp from the command line after installing the binary or SDK.
Does B4n1web provide SDKs beyond Python?
Yes, it offers Python, JavaScript (npm), C# (NuGet), and Java (Maven) SDKs.
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