Copy Sharpener

Agent

Rewrites marketing copy to be clearer, punchier, and conversion-ready.

4.7(98)28.4k installs1.3k likesUpdated 1 month ago

Low riskMITOpen Source

Copy Sharpener

Read-only marketing copy reviewer and rewriter. Paste in any copy — headline, email, ad, landing section — and get specific, conversion-focused rewrites.

What it improves

Headlines — buries the benefit? too clever? it rewrites for immediate clarity
CTAs — vague "Learn more" buttons become action-specific
Email subjects — flags curiosity gaps, length issues, and spam-trigger words
Feature lists — translates features into buyer outcomes

Install

bash

npx nuclexa install copy-sharpener --target claude-code

Demo

copy-sharpener — preview

Interactive demo coming soon

A short walkthrough of Copy Sharpener in action will appear here.

Supported platforms

CCClaude CodeCDClaude DesktopCuCursor

Installation

Install or export Copy Sharpener for any platform it supports.

Claude Code

$ npx nuclexa install copy-sharpener --target claude-code

Claude Desktop

$ npx nuclexa install copy-sharpener --target claude-desktop

Cursor

$ npx nuclexa install copy-sharpener --target cursor

Example usage

Sharpen your landing page headline

bash

npx nuclexa install copy-sharpener --target claude-code

Then:

Rewrite this headline for higher clarity and conversion: "We help teams do more with less."

Copy Sharpener returns the original annotated with weaknesses plus three alternatives ranked by expected clarity.

Required permissions

Low risk

Read files
Read files in the workspace.
Write files
Create or modify files in the workspace.
Run shell commands
Execute commands in your shell.
Network access
Make outbound network requests.
Access environment variables
Read process environment variables.
Access browser
Control a browser session.
Access git history
Read commit history and diffs.
Access secrets
Read configured secrets and tokens.

Compatibility

How Copy Sharpener behaves across supported runtimes.

Platform	Status	Install method
CCClaude Code	Supported	CLI install
CDClaude Desktop	Supported	Desktop install
CuCursor	Supported	Cursor rule

License & safety

License

MITOpen source — free for commercial use.

Safety note

Every install shows its full permission scope before it runs. Review the requested permissions and source repository before installing.

Platform

Status

Install method

CCClaude Code

Supported

CLI install

CDClaude Desktop

Supported

Desktop install

CuCursor

Supported

Cursor rule