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CoEngineers

SpecKit Setup

What is SpecKit?

Section titled “What is SpecKit?”

SpecKit is an open-source CLI and skill set available on GitHub for turning product descriptions into working software. It provides a specification-driven development workflow that works with any LLM coding assistant — Claude Code, Gemini CLI, Codex, or whatever comes next.

Before You Start

Section titled “Before You Start”

Your vault’s 03_build/ folder is the starting point. It should contain a product requirements document (app_prd.md) that describes what you are building.

Prerequisites

Section titled “Prerequisites”
  • Python 3.11+ — required by the SpecKit CLI
  • uv — Python package manager (install guide)
  • Git — version control for your project
  • An LLM coding tool — Claude Code, Gemini CLI, Codex, or any tool that can read your project files, generate code, and run commands. See the Tool Setup Guides for installation instructions.

Step 1: Install the SpecKit CLI

Section titled “Step 1: Install the SpecKit CLI”
uv tool install specify-cli --from git+https://github.com/github/spec-kit.git

Step 2: Initialise Your Project

Section titled “Step 2: Initialise Your Project”

Create a new folder for your project, initialise a git repo, and run:

specify init [your-project-name] --ai claude

The --ai flag tells SpecKit which LLM tool you are using. It accepts claude, gemini, codex, copilot, and others — pick the one that matches your setup.

Step 3: Verify the Installation

Section titled “Step 3: Verify the Installation”
specify check

This confirms that your project structure is correct and SpecKit is ready to go.