MCP Web Snapshot
@gustavo-meilus
About MCP Web Snapshot
Take snapshot of websites and deliver it to LLM tools.
Config
Add this server to your MCP-compatible client using the configuration below.
{
"mcpServers": {
"mcp-web-snapshot": {
"command": "uv",
"args": [
"--directory",
"/path/to/mcp-web-snapshot",
"run",
"python",
"src/server.py"
]
}
}
}Tools
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Overview
What is MCP Web Snapshot?
MCP Web Snapshot is a Model Context Protocol server that uses Playwright to capture comprehensive website snapshots, including accessibility trees, network requests, and console messages, designed for LLM-based analysis. It is built for developers using MCP clients such as VS Code, Cursor, Windsurf, or Claude Desktop.
How to use MCP Web Snapshot?
Install dependencies with uv sync and Playwright browsers with uv run playwright install, then configure the server in your MCP client using a JSON object with command: "uv" and args: ["--directory", "/path/to/mcp-web-snapshot", "run", "python", "src/server.py"]. After setup, invoke the website_snapshot tool with a valid URL.
Key features of MCP Web Snapshot
- Fast and lightweight using Playwright’s accessibility tree
- LLM-optimized structured data output
- Comprehensive network and console message monitoring
- Unique element references for interactive elements
- Production-ready with error handling and timeouts
- Well-tested with 92% code coverage
Use cases of MCP Web Snapshot
- LLM-guided test generation from captured page structure
- Web content analysis for pricing or feature comparison
- Accessibility auditing based on WCAG guidelines
- API integration analysis by monitoring network requests
- Cross-browser test scenario creation from interactive elements
FAQ from MCP Web Snapshot
What are the system requirements?
Python 3.11 or newer and a compatible MCP client (e.g., VS Code, Cursor, Claude Desktop).
How do I install Playwright browsers?
Run uv run playwright install after setting up the project dependencies.
Can I customize the viewport size or timeout?
Yes, edit the CONFIG dictionary in src/tools/snapshot_url.py to adjust viewport, user agent, and timeout settings.
What happens if I provide an invalid URL?
The server returns a helpful error message for malformed URLs.
How is this different from the interactive Playwright MCP?
MCP Web Snapshot focuses on one-shot, structured snapshots with network and console monitoring, while Playwright MCP offers interactive browser control.
Frequently asked questions
What are the system requirements?
Python 3.11 or newer and a compatible MCP client (e.g., VS Code, Cursor, Claude Desktop).
How do I install Playwright browsers?
Run `uv run playwright install` after setting up the project dependencies.
Can I customize the viewport size or timeout?
Yes, edit the `CONFIG` dictionary in `src/tools/snapshot_url.py` to adjust viewport, user agent, and timeout settings.
What happens if I provide an invalid URL?
The server returns a helpful error message for malformed URLs.
How is this different from the interactive Playwright MCP?
MCP Web Snapshot focuses on one-shot, structured snapshots with network and console monitoring, while Playwright MCP offers interactive browser control.
Basic information
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