Is the Copychief skill free?

Yes. The skill itself is free from robpalmer99/claude-code-copywriting-skills. SkillProof publishes the install command and an independent test verdict at no cost.

What is the Copychief SkillProof Score?

9.6/10 — installs cleanly 5/5, triggers reliably 5/5, output vs. baseline 9/10, docs & honesty 5/5.

How do I install Copychief?

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 Copychief 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.

Copychief

Line-by-line direct-response copy review with a scored verdict, specific rewrites, and a kill list.

by robpalmer99 · robpalmer99/claude-code-copywriting-skills

Tested · Works

Install — copy the command Download source ↗

Test report

Verdict: Tested · Works
Score: 9.6/10
Tested: Jul 16, 2026
Environment: Claude Code 2.x (agent harness)
Upstream re-checked: Aug 10, 2026 · 1fccb7d

Ran a real A/B on a deliberately generic 'new course' launch email: the baseline gave six generic bullet notes ('make it more specific,' score '3 or 4'), while the skill-guided review produced 5 Location/Issue/Fix/Principle entries with actual drop-in rewrite sentences, a named kill list of exact filler phrases, and a 2/10 conversion score with ranked top-3 fixes.

Scored on four weighted criteria — install, triggering, output vs. baseline, docs. How scoring works

Installs cleanly 5/5
Triggers reliably 5/5
Output vs. baseline 9/10
Docs & honesty 5/5

What Copychief does

Reviews sales copy, VSLs, emails, ads, and landing pages like a senior direct-response creative director: classifies the piece, evaluates 6 strategic elements (hook, lead, mechanism, offer, close, emotional throughline), then gives Location/Issue/Fix/Principle line items and a verdict with a conversion score, top-3 fixes, what's working, and a kill list. Triggers on "review this copy," "copychief this," "critique this VSL/email/ad," or when a shared doc is offered for sales-copy feedback.

How to install Copychief

git clone https://github.com/robpalmer99/claude-code-copywriting-skills
cd claude-code-copywriting-skills
mkdir -p ~/.claude/skills
cp -r copychief ~/.claude/skills/copychief

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

Commands — how to trigger Copychief

/copychief Line-by-line direct-response copy review with a scored verdict, specific rewrites, and a kill list.

It also activates on plain-language prompts like these:

Can you review this VSL script and tell me exactly what's falling flat?
Review this launch email sequence before I send it to my whole list
Here's a Google Doc with my landing page copy, give me brutal feedback

Frequently asked questions

Is the Copychief skill free?: Yes. The skill itself is free from robpalmer99/claude-code-copywriting-skills. SkillProof publishes the install command and an independent test verdict at no cost.
Does Copychief work with Claude Code?: We tested it with Claude Code 2.x (agent harness) on Jul 16, 2026. Verdict: Tested · Works. Ran a real A/B on a deliberately generic 'new course' launch email: the baseline gave six generic bullet notes ('make it more specific,' score '3 or 4'), while the skill-guided review produced 5 Location/Issue/Fix/Principle entries with actual drop-in rewrite sentences, a named kill list of exact filler phrases, and a 2/10 conversion score with ranked top-3 fixes.
What is the Copychief SkillProof Score?: 9.6/10 — installs cleanly 5/5, triggers reliably 5/5, output vs. baseline 9/10, docs & honesty 5/5.
How do I install Copychief?: 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 Copychief 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.