Lean LSP MCP

Item: Lean LSP MCP
Rating: 46
Author: M8ven

Enables LLM agents to interact with the Lean theorem prover through the Language Server Protocol, providing tools for analyzing Lean projects, accessing diagnostics, goal states, documentation, and searching for theorems using both local and external search services.

→ oOo0oOo/lean-lsp-mcp · listed on glama

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// key findings

⚠️

Tool annotations don’t match behaviour

1 read-only tool performs write/delete/exec — run_code (line 94: with open(abs_path, "w", encoding="utf-8") as f:)

✅

No credential exfiltration, no sensitive file access, no obfuscation

Static analysis found nothing flowing your secrets to unexpected places.

✅

Open source with a license and README

Anyone can audit the code, the license is declared, and the publisher documents what it does.

// required environment variables

This server reads these from process.env. You'll be asked to provide them before it can run.

configXDG_CACHE_HOME

configELAN_HOME

// full audit trail

The full breakdown of what we checked, the deductions that landed, the network hosts, the dependency advisories, and concrete fix guidance is available to verified publishers.

// improvement guidance — verified publishers only

We have 5 concrete improvements we can share with the publisher of this MCP. Each comes with specific guidance to raise the trust score.

// embed badge in your README

[![M8ven Score](https://m8ven.ai/badge/mcp/ooo0ooo-lean-lsp-mcp-1aw3vm)](https://m8ven.ai/mcp/ooo0ooo-lean-lsp-mcp-1aw3vm)

commit: ea23aa56e17090a44298d8ac96ace6850731b76d

code hash: 552eb814cab1f559bf0575a8f6e2c5b40be4019cff5d9b4d971b477bc916c967

verified: 6/17/2026, 12:36:49 PM

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