Claude Code workflow kit

Agent OS

System for injecting codebase standards and writing specs for spec-driven agent development.

5,575 stars 830 forksWorkflow kits Source

Install

From source

git clone https://github.com/buildermethods/agent-os.git

From the README

Agents that build the way you would

Agent OS helps you shape better specs, keeps agents aligned in a lightweight system that fits how you already build.

Works alongside Claude Code, Cursor, Antigravity, and other AI tools. Any language, any framework.

Core capabilities:

- Discover Standards — Extract patterns and conventions from your codebase into documented standards
- Deploy Standards — Intelligently inject relevant standards based on what you're building
- Shape Spec — Create better plans that lead to better builds
- Index Standards — Keep your standards organized and discoverable
Documentation & Installation

Docs, installation, usage, & best practices 👉 It's all here
Follow updates & releases

Read the changelog

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Created by Brian Casel @ Builder Methods

Created by Brian Casel, the creator of Builder Methods, where Brian helps professional software developers and teams build with AI.

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Read the full README on GitHub

Details

Repository: buildermethods/agent-os
Type: Workflow kits
Website: buildermethods.com/agent-os
Language: Shell
License: MIT
Last updated: 7 October 2026
Listed in: subinium/awesome-claude-code

FAQ

What is Agent OS?

System for injecting codebase standards and writing specs for spec-driven agent development. It is a workflow kit for Claude Code, from buildermethods/agent-os on GitHub.