> ## Documentation Index
> Fetch the complete documentation index at: https://docs.pylancemcp.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Introduction

> Welcome to Pylance MCP Pro - Professional Python intelligence with advanced features

<img className="block dark:hidden" src="https://mintcdn.com/threegroup/n3mOf17BpARilor-/images/hero-light.png?fit=max&auto=format&n=n3mOf17BpARilor-&q=85&s=02957d52758669193ccad7750270390a" alt="Hero Light" width="1536" height="512" data-path="images/hero-light.png" />

<img className="hidden dark:block" src="https://mintcdn.com/threegroup/n3mOf17BpARilor-/images/hero-dark.png?fit=max&auto=format&n=n3mOf17BpARilor-&q=85&s=002d056098af05baa36389a56e7cb41f" alt="Hero Dark" width="1536" height="512" data-path="images/hero-dark.png" />

## What is Pylance MCP Pro?

Pylance MCP Pro is a professional, production-ready Model Context Protocol (MCP) server that exposes the full power of Microsoft's Pylance/Pyright language server to AI coding assistants with advanced features like OpenTelemetry tracing and conversation logging. It enables Claude Desktop, Cursor, Continue.dev, Windsurf, and other MCP-compatible clients to autonomously analyze, refactor, type-check, and fix entire Python codebases with zero human intervention.

<CardGroup cols={2}>
  <Card title="Quick Start" icon="rocket" href="/quickstart">
    Get up and running in under 5 minutes
  </Card>

  <Card title="Installation" icon="download" href="/installation">
    Detailed installation instructions for all platforms
  </Card>

  <Card title="API Reference" icon="code" href="/api-reference/tools/get-completions">
    Complete tool and resource documentation
  </Card>

  <Card title="Guides" icon="book" href="/guides/cursor-setup">
    Step-by-step setup guides for popular clients
  </Card>
</CardGroup>

## Features

### 🧠 IntelliSense Completions

Full LSP completion support with type inference. Get context-aware suggestions with function signatures, parameter hints, and docstrings—exactly like VS Code.

### ⚡ Instant Type Checking

Pyright-powered static analysis catches type errors, undefined variables, and import issues before runtime. Zero-config diagnostics for the entire workspace.

### 🎯 Go-to-Definition

Jump to function, class, or variable definitions across files, packages, and virtual environments. Works with stdlib, third-party libs, and your code.

### 🔍 Find All References

Locate every usage of a symbol across your entire codebase in milliseconds. Perfect for refactoring or understanding data flow in complex projects.

### 💡 Hover Type Info

Inspect type annotations, function signatures, and docstrings on-demand. See inferred types, parameter info, and return types without leaving your flow.

### 🔄 Safe Symbol Renaming

Rename variables, functions, or classes across multiple files with guaranteed correctness. LSP ensures all references are updated atomically.

### ✨ Auto-Format & Fix

Format Python code with Black/autopep8 integration. Apply quick fixes for imports, type hints, and common issues with a single command.

### 🗂️ Workspace Intelligence

Multi-file edits, bulk refactoring, and project-wide operations. Create, modify, or delete files programmatically via LSP workspace edits.

### 🐍 Venv Auto-Detection

Automatically discovers Python interpreters, virtual environments, and package dependencies. Supports conda, venv, poetry, and system Python.

### 🔬 Deep Code Analysis

Advanced diagnostics beyond syntax: unused imports, unreachable code, type narrowing issues, and missing type stubs. Powered by Pyright's type checker.

### 🌐 MCP Protocol Native

Built on Model Context Protocol—works seamlessly with Claude Desktop, Cursor, Continue.dev, Windsurf, and any MCP-compatible client.

### 📊 Training Data Export

Optional logging of all prompts, responses, and tool calls to SQLite. Export to JSONL for fine-tuning your own models on real Python workflows.

## Why Pylance MCP Pro?

Traditional AI coding assistants are limited to simple text manipulation without deep understanding of Python semantics. Pylance MCP Pro bridges this gap by providing:

* **Complete Type Awareness**: Full Pyright type checking and inference
* **Zero Configuration**: Works out of the box with any Python project
* **Production Ready**: Secure, fast, and battle-tested
* **MCP Native**: Integrates seamlessly with any MCP client
* **Open Source**: MIT licensed, community-driven

## Supported Clients

<CardGroup cols={2}>
  <Card title="Claude Desktop" icon="comment">
    Anthropic's desktop app with native MCP support
  </Card>

  <Card title="Cursor" icon="cursor">
    AI-powered code editor
  </Card>

  <Card title="Continue.dev" icon="forward">
    VS Code extension for AI pair programming
  </Card>

  <Card title="Windsurf" icon="wind">
    Next-generation AI coding assistant
  </Card>
</CardGroup>

## Next Steps

<CardGroup cols={2}>
  <Card title="Quick Start Guide" icon="play" href="/quickstart">
    Install and configure in minutes
  </Card>

  <Card title="Tool Reference" icon="wrench" href="/api-reference/tools/get-completions">
    Explore all available LSP tools
  </Card>
</CardGroup>