stanford-centaur/PyPantograph

A Machine-to-Machine Interaction System for Lean 4.

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/ 100
Established

PyPantograph is a system designed for developers working with Lean 4, a formal proof assistant. It allows you to programmatically interact with Lean 4, executing tactics and inspecting Lean constants. This project is for engineers building advanced theorem-proving tools or integrating Lean 4 into larger automated reasoning systems.

136 stars.

Use this if you are a developer building automated reasoning systems or tools that need to programmatically control and analyze Lean 4 proofs and its internal state.

Not ideal if you are an end-user of Lean 4 who is manually writing proofs and not looking to build programmatic interactions.

formal-verification theorem-proving proof-automation symbolic-AI software-engineering
No Package No Dependents
Maintenance 10 / 25
Adoption 10 / 25
Maturity 16 / 25
Community 20 / 25

How are scores calculated?

Stars

136

Forks

31

Language

Python

License

Apache-2.0

Last pushed

Feb 24, 2026

Commits (30d)

0

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