Lean4 GitHub Repositories (2026) · Open Source Tools

Composable mathematics tools for agents

Neuro-symbolic agents with verified memory. MCP math tools, an algebra repair Skill, and an open challenge. Verify solutions, learn checked rules, and reuse.

LLMs as Copilots for Theorem Proving in Lean

Formally Verified Arguments of Knowledge in Lean

Lean 4 programming language and theorem prover

The math library of Lean 4

Plan, apply and roll back changes to a production ontology, with a blast radius report and a proof an auditor can re-check.

A minimal, self-contained implementation of a Lean 4-style theorem prover kernel in Rust.

An Axum-based Rust web framework with Lean 4-verifiable application kernels that run on servers, bare-metal embedded devices, and GPUs, plus integrated security testing.