"If you know clearly what you want, this WILL build it for you. No bs."

"I've done SpecKit, OpenSpec and Taskmaster — this has produced the best results for me."

"By far the most powerful addition to my Claude Code. Nothing over-engineered. Literally just gets shit done."

Trusted by engineers at Amazon, Google, Shopify, and Webflow.

Why I Built This · How It Works · Commands · Why It Works · User Guide

Why I Built This

I'm a solo developer. I don't write code — Claude Code does.

Other spec-driven development tools exist; BMAD, Speckit... But they all seem to make things way more complicated than they need to be (sprint ceremonies, story points, stakeholder syncs, retrospectives, Jira workflows) or lack real big picture understanding of what you're building. I'm not a 50-person software company. I don't want to play enterprise theater. I'm just a creative person trying to build great things that work.

So I built GSD. The complexity is in the system, not in your workflow. Behind the scenes: context engineering, XML prompt formatting, subagent orchestration, state management. What you see: a few commands that just work.

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