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ty-lsp

🔌Plugin

astral-sh/ty

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What it does

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An extremely fast Python type checker and language server written in Rust by the Astral team (creators of uv and ruff), providing real-time type checking and IDE integration.

Overview

ty LSP is a Claude Code plugin for ty, an extremely fast Python type checker and language server written in Rust by Astral (creators of uv and Ruff). It provides real-time type checking that is 10x-100x faster than mypy and Pyright.

Key Features

Real-time Python type checking with comprehensive diagnostics and rich contextual information
10x-100x faster than mypy and Pyright, benchmarked against large projects like home-assistant
Configurable rule levels and per-file overrides with support for gradual adoption via suppression comments
Full language server protocol support for IDE integration

Who is this for?

Python developers who want fast, accurate type checking integrated into their Claude Code workflow.

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Part of

zwldarren-claude-code-marketplace

development

Installation

Add marketplace in Claude Code:

/plugin marketplace add zwldarren/claude-code-marketplace

Step 2. Install plugin:

/plugin install ty-lsp@zwldarren-marketplace

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Last UpdatedFeb 16, 2026