ty
MIT Astral Python type checker (beta) in Rust
Python / Tooling · OSS/MIT · 19.6k
What's Good
MIT. Extremely fast Python type checker and language server from the uv/Ruff team. uvx ty check to try. Incremental analysis aimed at IDE speed.
The Catch
Beta/maturing vs mypy/pyright — say so. Do not invent pass rates or claim it already replaces either tool on every codebase. Distinct from Ruff (lint/format) even though same vendor.
Verdict
MIT Astral type checker. Fast and young — measure it; do not invent scores.
Embed
[](https://stackgems.com/gems/ty)