Lezer grammar for the Lean4 language

Run Lean 4 in the browser via WebAssembly

Lean 4 WebAssembly binary and standard library files

Lean 4 standard library (.olean files, lean-lib.tar.gz)

Refactorings and snippets for Lean 4

An interactive display for the Lean 4 theorem prover.

Lean 4 WebAssembly binary (lean.wasm)

Lean 4 Emscripten JS glue (lean.js)

Web terminal panel where multiple AI agents (CodeBuddy / Claude / Codex / shell) act as group members in a single chat — #mention to dispatch, cross-agent forwarding, JSONL persistence, 5x5 LCD activity indicators.

Expert Delegation System for MUSUBIX - 7 Specialized AI Experts with VS Code LM API

A verification toolchain for TypeScript — generates Lean 4 or Dafny from annotated TS

Formal verification skills for Claude Code, Codex, OpenCode, and Gemini. Rust -> Lean 4 via Aeneas.

Lean 4 formal verification integration for MUSUBIX - EARS-to-Lean conversion, TypeScript specification, and proof generation

Lean 4 spec generator for lifecycle-orchestrator state machines. Compiles a transition table to a Lean 4 inductive type and a total dispatch function with no catch-all, so Lean’s exhaustiveness checker is what proves the table is complete, and a rejected

High-performance WebAssembly theorem prover with dependent types, hash-consing (150x faster), Ed25519 proof signatures, MCP support for Claude Code, AgentDB vector search, episodic memory, and ReasoningBank learning. Formal verification with cryptographic

Simple Node.js wrapper for Lean 4 theorem prover

Static declaration browser for Lean projects using doc-gen4 data.

ProofLedger MCP server — verify ASC 606 claims with formal proofs

CLI tool for managing Aeneas extraction from Rust to Lean

Imperium Manifold — Lightning-gated Cohereon Doctrine v6.1 + complete Summa Theologica. SSE MCP server at manifold.cohereon.io/mcp. 398 doctrine components, 9 free. 509 Summa questions, 2,662 articles, all free. Public domain.