Fitter

Overview

Fitter is a Model Context Protocol server that transforms any website or API into structured JSON using LLM-authored declarative scraping configurations. Instead of manually converting web data, AI assistants can call Fitter as a native tool through MCP, streamlining data extraction workflows.

The server runs locally via Docker using the image ghcr.io/pxyup/fitter-mcp:v1.8.3. It requires no authentication and operates out of the box over stdio. The project is released under the MIT license and maintained at PxyUp/fitter on GitHub, where it has accumulated 132 stars.

Fitter is listed in the Development category on mcp.site and works with any MCP client including Claude Desktop, Claude Code, Cursor, VS Code, Windsurf, and Zed. If you maintain this project, you can claim this listing to verify ownership and keep information up to date.

Installation

// claude_desktop_config.json
{
  "mcpServers": {
    "fitter": {
      "command": "docker",
      "args": [
        "run",
        "-i",
        "--rm",
        "ghcr.io/pxyup/fitter-mcp:v1.8.3"
      ]
    }
  }
}