tsdd

tsdd — 真なる仕様駆動開発

A Claude Code plugin for true specification-driven development.

Humans and AI co-create HTML spec documents through dialogue. The spec lives in git. The git diff between spec versions is the input to implementation.

Skills

Skill	Triggers when
tsdd:spec-create	A new feature/system idea appears in conversation
tsdd:spec-update	The user wants to change an existing spec

Spec Structure

spec/
  index.html      ← main spec
  glossary.html   ← project glossary (always separate)
  auth.html       ← split out when a section grows large

Specs contain Why (背景) and What (機能仕様). How is left to the implementation workflow.

What tsdd does NOT do

• Write implementation code
• Run tests
• Manage tasks or issues

Implementation is delegated to the user's preferred workflow after spec-update produces a meaningful git diff.

Installation

Add this plugin to your Claude Code plugins directory and register it in your plugin config.