github spec kit - spec-driven development toolkit
About Spec Kit
Open-source toolkit for Spec-Driven Development: scaffold specs, plans, and tasks in your repo, then run agent commands to implement changes with the AI tool you prefer.
Key Capabilities
Specify CLI to bootstrap spec-driven workflows in new or existing repos
Spec → plan → tasks → implement workflow for clearer agent context
Agent-agnostic: designed to work across multiple AI tools/environments
Slash-command driven implementation stage (e.g., /speckit.implement)
Template releases you can download and version independently
Docs, changelog, and security reporting guidance maintained in-repo
Perfect for
Pricing
How much does Spec Kit cost?
Free
Community Buzz
Air just launched. No single agent is best at everything. Air lets you easily switch between Codex, Claude Agent, Gemini CLI, and Junie.
Someone just leaked the full system prompts of every major AI coding tool. Cursor. Devin. Claude Code. Windsurf. Kiro. 25+ products fully exposed.
Stop coding from scratch with agents. This repo gives you 860+ battle-tested skills for Claude Code, Gemini CLI, Cursor, and Copilot.
Similar Tools to Spec Kit
Continue.dev
Open-source CLI tool for Continuous AI that runs async agents on pull requests to enforce team rules, catch issues, and accelerate software shipping.
free-claude-code
MIT-licensed local Python gateway that sits in front of coding agents and routes Anthropic-format traffic to free, paid, subscription and local backends. The README claims 50 ToS-friendly providers, 1.3B+ free tokens a month and 10 coding agents (Claude Code, Codex, Pi, OpenCode, Cline, Hermes, DeepSeek Harness, Grok Build, Muse Code, Aider) behind one searchable model catalog, with automatic fallback to the next configured model when a provider fails. It is an independent project, not affiliated with Anthropic: you keep the agent harness, not Claude's weights, and free-tier limits belong to each upstream provider and may change. A GitHub issue titled "Malicious claims about this repo" is a community dispute, not a verified finding, and no privacy or security policy page exists beyond the README.
Apache Maka
Apache-incubating agent workspace where the Desktop app, the TUI and the CLI are thin clients of one Runtime Host, and every model message, tool call, permission decision and termination is written as an append-only RuntimeEvent: the project's own line is "the log is the runtime". You bring the model (a cloud API, a local model or a compatible gateway) and sessions, settings and run records stay on your machine. Its site publishes a nine-harness Terminal-Bench 2.1 table with per-task CSVs rather than a headline claim. Read the status before installing: as of 8 September 2026 Maka has not made an Apache release, the desktop nightlies are unsigned previews not intended for production, and the CLI ships as maka-agent@next on npm (the unrelated maka package is not this project). Its SECURITY.md is unusually direct: the only enforcement boundary against an adversarial LLM is the operating system, and API keys sit in a local plaintext credential file readable only by your OS account.
Archify
MIT agent skill for Cursor, Claude Code, Codex and OpenCode: describe a system in chat, or point the agent at a repository, and it produces a self-contained interactive HTML diagram (architecture, workflow, sequence, data flow or state machine) with no runtime dependencies, plus PNG, SVG, WebP and clipboard export. The agent writes a typed JSON intermediate representation and Archify compiles it deterministically, which is what makes the output checkable, and a Before/Delta/After compare reviews architecture changes before merge. It is not a drawing editor or a Mermaid theme. Two name collisions to avoid: archifyai.com (building design) and Archify AG (a Swiss CAD firm) are unrelated companies.
OpenClaw
Free, open-source personal AI assistant by Peter Steinberger that runs on your machine and performs real tasks autonomously. Talk to it from WhatsApp, Telegram, iMessage, Discord, Slack, or Signal. One-liner install, persistent local memory, ClawHub skills marketplace, sandbox or full system access, and support for Claude, OpenAI, DeepSeek, Qwen, or local LLMs via Ollama. 247K GitHub stars by March 2026; Steinberger joined OpenAI on February 14, 2026 with a non-profit foundation taking project stewardship.
OpenHands
Open-source AI software engineering agent (formerly OpenDevin) that browses the web, writes and executes code, runs bash commands, and resolves GitHub issues autonomously. Backed by All Hands AI and supported by 55k+ GitHub stars.
Related Articles
Browse vetted vibe coding agencies for MVP builds, cleanups, and audits.
ready to try spec kit?
go to the official site and judge Spec Kit yourself.
try spec kit now