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Lean Info

Verified Integration
Author: @ljwljwljwljw•Category: ServerApplication
GitHub Repository
JSON-RPC 2.0
Protocol Standard
Sub-second
Execution Latency
Active
Operational Status
Tags:#Claude#Search#Database#API#Git#Filesystem#AI#GitHub#Node.js

Client Configuration

— Connect Lean Info to Claude Desktop or Cursor in seconds
{
  "mcpServers": {
    "lean-info": {
      "command": "npx",
      "args": [
        "-y",
        "@modelcontextprotocol/server-lean-info"
      ],
      "env": {}
    }
  }
}
Paste into ~/Library/Application Support/Claude/claude_desktop_config.json (macOS) or %APPDATA%\Claude\claude_desktop_config.json (Windows).
Architecture & Capabilities

System Overview

Provides AI coding assistants with access to Lean 4's InfoView data, exposing proof goals, diagnostics, types, and completions.

Indexed Date

7/23/2026

License

Open Source

Protocol Layer

stdio / SSE RPC

Frequently Asked Questions

Architecture and operational details for Lean Info

Lean Info is an MCP server designed to provide AI coding assistants, such as Claude Code, programmatic access to Lean 4's interactive InfoView data. This enables AI to 'see' proof goals, diagnostics, types, and code completions, significantly enhancing their ability to assist with Lean 4 proof development.

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