lean-lsp-mcp

MCP server for agentic interaction with the Lean theorem prover via LSP, providing tools for understanding, analyzing, and interacting with Lean projects.

→ project-numina/lean-lsp-mcp · listed on glama

Is this your MCP?

Claim it to get a verified publisher badge, a free copy of our full audit findings, and direct contact for any high-priority issues we find.

Install from

Glama

M8ven verifies MCPs across every public registry — install directly from whichever one you prefer.

// key findings

✅

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.

🔐

You'll be asked for 3 credentials: LEAN_LSP_MCP_TOKEN, GEMINI_API_KEY, OPENAI_API_KEY

These are read from process.env at runtime. Make sure you trust where they’ll be sent.

// required environment variables

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

configLEAN_LSP_TEST_MODE

configLEAN_LOG_LEVEL— Log level for the server. Options are "INFO", "WARNING", "ERROR", "NONE". Defaults to "INFO".

configLEAN_PROJECT_PATH— Path to your Lean project root. Set this if the server cannot automatically detect your project.

🔐 secretLEAN_LSP_MCP_TOKEN— Secret token for bearer authentication when using streamable-http or sse transport.

configLEAN_STATE_SEARCH_URL— URL for a self-hosted [premise-search.com](https://premise-search.com) instance.

configLEAN_HAMMER_URL— URL for a self-hosted [Lean Hammer Premise Search](https://github.com/hanwenzhu/lean-premise-server) instance.

🔐 secretGEMINI_API_KEY

configMCP_LOG_DIR

🔐 secretOPENAI_API_KEY

// 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/project-numina-lean-lsp-mcp-wy7hgl)](https://m8ven.ai/mcp/project-numina-lean-lsp-mcp-wy7hgl)

commit: 5c0eddf0a67881aae10589e9c399538f90f1eff6

code hash: 7e62367bd4347976fd32e4ab8fdad169cc69d14811376c11b7044a0042d14e3b

verified: 6/16/2026, 1:27:18 PM

view raw JSON →