Is the Deep Plan skill free?

Yes. The skill itself is free from piercelamb/deep-plan. SkillProof publishes the install command and an independent test verdict at no cost.

Does Deep Plan work with Claude Code?

It is in our test queue — we run every skill on real work before issuing a verdict, and this one is scheduled.

How do I install Deep Plan?

Copy the install command from this page, run it in your terminal, and restart Claude Code. Skills live in ~/.claude/skills/ (global) or .claude/skills/ inside a project.

Can I use Deep Plan with Cursor, Copilot, Gemini CLI, Codex or other AI tools?

The SKILL.md format is native to Claude (Claude Code, Desktop, claude.ai). The instructions inside adapt to other assistants: Cursor rules, GitHub Copilot instructions, Windsurf rules, Custom GPTs, AGENTS.md for OpenAI Codex, and GEMINI.md for Google Gemini CLI — our conversion guides cover each, and the free converter on the tools page does the wrapping for you.

Deep Plan

Create sectionized, TDD-oriented implementation plans via research and multi-LLM review.

by piercelamb · piercelamb/deep-plan

In test queue

Install — copy the command Download source ↗

Test report

Verdict: In test queue
Tested: —
Environment: Pending

In the test queue — machine-screened (validator 85/100, 102★ repo), full install/trigger/output test scheduled.

What Deep Plan does

Creates detailed, sectionized, TDD-oriented implementation plans through research, stakeholder interviews, and multi-LLM review. Use when planning features that need thorough pre-implementation analysis.

How to install Deep Plan

git clone https://github.com/piercelamb/deep-plan
cp -r deep-plan/skills/deep-plan ~/.claude/skills/deep-plan

Skills live in ~/.claude/skills/ (global) or .claude/skills/ (per-project). Restart Claude Code after installing.

Commands — how to trigger Deep Plan

/deep-plan Create sectionized, TDD-oriented implementation plans via research and multi-LLM review.

It also activates on plain-language prompts like these:

Write a detailed TDD implementation plan for this feature
Research this feature and get multi-LLM review on the plan
Interview me for requirements before planning this build

Frequently asked questions

Is the Deep Plan skill free?: Yes. The skill itself is free from piercelamb/deep-plan. SkillProof publishes the install command and an independent test verdict at no cost.
Does Deep Plan work with Claude Code?: It is in our test queue — we run every skill on real work before issuing a verdict, and this one is scheduled.
How do I install Deep Plan?: Copy the install command from this page, run it in your terminal, and restart Claude Code. Skills live in ~/.claude/skills/ (global) or .claude/skills/ inside a project.
Can I use Deep Plan with Cursor, Copilot, Gemini CLI, Codex or other AI tools?: The SKILL.md format is native to Claude (Claude Code, Desktop, claude.ai). The instructions inside adapt to other assistants: Cursor rules, GitHub Copilot instructions, Windsurf rules, Custom GPTs, AGENTS.md for OpenAI Codex, and GEMINI.md for Google Gemini CLI — our conversion guides cover each, and the free converter on the tools page does the wrapping for you.