How to Install and Set Up Libspec

libspec is a Python library and CLI tool for spec-driven development with LLM agents.

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Prerequisites

• Python: Version 3.12 or higher.
• Package Manager: uv (recommended) or standard pip.

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Installation

Using uv (Recommended)

Add libspec to your project dependencies:

uv add libspec

Or install it globally for CLI access:

uv tool install libspec

Using pip

Install libspec directly from PyPI:

pip install libspec

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Initializing a Libspec Project

Inside your project root directory, run the initialization command:

uv run libspec init

This creates a .libspec/ configuration directory and a default spec/ folder containing an initial specification file.

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Next Steps

• Follow the Quickstart Tutorial to author your first specification class.
• Learn how to connect your coding agent in Using the MCP Server.