Produce a structured ATDD-first implementation plan. Acceptance tests define "done" before a single line of implementation exists. Design patterns are named and justified. SOLID is audited. The gap review is never empty.
Atdd Plan is a community-contributed Claude Code skill in the testing sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/atdd-plan/ and loads when your prompt matches the skill's trigger.
When to invoke it: Use whenever the user wants to plan a feature, fix, or refactor — 'how should we implement X', 'plan this', 'let's design X', 'where do we start on Y'. Tests follow Kent Dodds Testing Trophy: behavior over implementation, integration-heavy, public-API-only, refactor-proof.
The Atdd Plan Claude Code skill is built for software engineers, backend developers, full-stack teams, and technical leads building and maintaining production systems. It's part of ClaudSkills (also referred to as Claude Skills or Claude Code Skills) — the open community-curated registry of 69,000+ SKILL.md files for Anthropic's Claude Code agent and the wider Claude ecosystem (Claude API, Claude Agent SDK).
mkdir -p ~/.claude/skills/atdd-plan curl -L https://claudskills.com/skills/atdd-plan/SKILL.md \ -o ~/.claude/skills/atdd-plan/SKILL.md
Or just download SKILL.md directly and drop it into ~/.claude/skills/atdd-plan/. Claude Code auto-discovers it on next session.
Skills live at ~/.claude/skills/atdd-plan/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\atdd-plan\SKILL.md on Windows. See the full install guide for step-by-step instructions.
The ClaudSkills desktop app installs any skill directly into ~/.claude/skills/ with one click — no terminal required. Pro starts at $9/mo or $149 lifetime.
For the full experience including quality scoring and one-click install features for each skill — upgrade to Pro.
Browse all Engineering skills in the ClaudSkills registry, or explore these other picks from the same category:
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SKILL.md files, not affiliated with, endorsed by, or sponsored by Anthropic.