Lean MCP
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Alternatives to Lean MCP
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Related Servers
- AlicenseNot gradedqualityDmaintenanceEnables verification of Lean 4 mathematical proofs via MCP tools, allowing AI clients to compile and check theorems with Mathlib.1MIT
- AlicenseNot gradedqualityAmaintenanceEnables AI-driven formal proof search in Lean 4 by submitting theorems with sorry placeholders and running parallel LLM agents whose proposed edits are verified by the Lean compiler until a machine-checked proof is produced. Also provides Mathlib theorem search and job/attempt management tools.2MIT
- AlicenseBqualityBmaintenanceEnables coding agents to drive HOL4's built-in hol lsp language server against individual SML script files, exposing proof diagnostics, goal states, evaluation, hover, definitions, symbols and completions as concise text tools. It manages server lifecycle, file syncing, proof-waiting, 1-based Unicode-aware positions, and detection of cheat usage.11BSD 3-Clause
- AlicenseAqualityAmaintenanceEnables AI coding agents to perform Lean 4 formal verification, navigate project symbols offline, and inspect C FFI bindings.51Apache 2.0
- AlicenseAqualityAmaintenanceEnables 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.22204,827 PyPI530MIT

narya-mcpofficial
AlicenseAqualityCmaintenanceEnables LLM agents to typecheck Narya files and develop proofs interactively by loading files into live sessions, inspecting and solving holes, searching for lemmas, and replaying edits.17Apache 2.0
TDQS
Scored across 1 tool
There is only one tool, so no overlap or misselection is possible. An agent cannot confuse lean_check with anything else.
A single snake_case noun-scoped name (lean_check) is internally consistent and clearly readable. Consistency cannot be violated with one tool.
A server named 'Lean MCP' implies a broader Lean workflow, yet it exposes only one execution tool. There is no tool for separate diagnostics retrieval, file handling, or environment information, making the surface very thin.
Execution plus diagnostics return covers the core 'run Lean code' loop, so the primary use case is served. However, related operations such as managing source files, listing library/version info, or iterative editing are absent, leaving notable gaps.