---
title: "ty Ultra-Fast Python Type Checker and Language Server"
description: "ty is an extremely fast Python type checker and language server written in Rust by Astral, the creators of Ruff and uv. It delivers 10-100x faster type checking than mypy or Pyright with comprehensive diagnostics, incremental analysis, and first-class editor integrations."
verification: "security_reviewed"
source: "https://github.com/astral-sh/ty"
category:
  - "Code Quality & Review"
framework:
  - "Claude Code"
tool_ecosystem:
  github_repo: "astral-sh/ty"
  github_stars: 18132
---

# ty Ultra-Fast Python Type Checker and Language Server

ty is an extremely fast Python type checker and language server written in Rust by Astral, the creators of Ruff and uv. It delivers 10-100x faster type checking than mypy or Pyright with comprehensive diagnostics, incremental analysis, and first-class editor integrations.

## Installation

Choose whichever fits your setup:

1. Copy this skill folder into your local skills directory.
2. Clone the repo and symlink or copy the skill into your agent workspace.
3. Add the repo as a git submodule if you manage shared skills centrally.
4. Install it through your internal provisioning or packaging workflow.
5. Download the folder directly from GitHub and place it in your skills collection.

## Source

- [Agent Skill Exchange](https://agentskillexchange.com/skills/ty-python-type-checker/)