lean-lsp-mcp
lean-lsp-mcp is an MCP server. It reaches control and lean. It needs CONTROL_PLANE_API_KEY and LEAN_LSP_MCP_TOKEN to authenticate. Its repository has 534 GitHub stars and is licensed under MIT; we last read it on 2026-10-22.
This repository provides Lean Theorem Prover MCP, connecting to Lean's proof assistant, requiring no additional credentials.
Install
MCP servers are packaged differently from each other -- some run via npx, some as a Docker image, some as a plain script you clone and run. lean-lsp-mcp’s own README did not state one plainly enough for this page to quote it rather than guess, so it will not guess. The repository below states it.
What it reaches, and what it needs
Reaches
control, lean
Credential
CONTROL_PLANE_API_KEY, LEAN_LSP_MCP_TOKEN
Maintenance
Stars
534
State
listed
Licence
MIT
Common questions about lean-lsp-mcp
- What does lean-lsp-mcp do?
- This repository provides Lean Theorem Prover MCP, connecting to Lean's proof assistant, requiring no additional credentials.
- How do I install lean-lsp-mcp?
- Its README did not state an install command plainly enough for us to quote one, so we do not guess. The repository has the instructions: https://github.com/oOo0oOo/lean-lsp-mcp
- What does lean-lsp-mcp connect to, and what does it need?
- It reaches control and lean. The credentials we found in its source are CONTROL_PLANE_API_KEY and LEAN_LSP_MCP_TOKEN.
- Is lean-lsp-mcp official and is it maintained?
- We found nothing naming it as a vendor’s official server. Its repository has 534 GitHub stars and its state in our directory is listed. Its last commit we recorded was on 2026-09-30.
- What licence does lean-lsp-mcp use?
- The repository declares the MIT licence.