MainframeKit

Overview

MainframeKit is a Model Context Protocol server that helps you work with mainframe systems without needing direct access to a mainframe. It can check JCL and DFSORT code, explain abends, and display copybooks. Once installed, it integrates seamlessly with your AI assistant as a set of callable tools.

The server runs locally on your machine via the npm package mainframekit-mcp and requires no credentials to start. Install it with npx -y mainframekit-mcp. The latest release is v0.1.3, available at https://mainframekit.com/ai/.

MainframeKit is listed in the Development category and works with Claude Desktop, Claude Code, Cursor, VS Code, Windsurf, Zed, and other MCP clients. If you maintain this project, claim your listing to earn the Verified badge and keep ownership current.

Installation

// claude_desktop_config.json
{
  "mcpServers": {
    "mainframekit": {
      "command": "npx",
      "args": [
        "-y",
        "mainframekit-mcp"
      ]
    }
  }
}