Daily work and research · 3 free picks
Writing: write in your own voice
Text from an assistant often sounds machine-made. Keeping one tone across emails, posts and documents is also hard. These add-ons remove common signs of AI writing and add skills for copy and business writing.
Free picks (tested by us)
Most useful first. Each one was installed on a clean test system; start with the first, try it, then add the next.
Make AI text sound human
Humanizer
Rewrites stiff, AI-sounding text so it reads like a person wrote it.
Test: installs cleanly and works without an account. Not yet used on real work.
EveryoneWatch outThe skill only changes text. It does not run programs or read other files.
For Claude Code Also works with Codex CLI — see all stepsStep 1 of 2 · Type this inside Claude Code /plugin marketplace add blader/ humanizer Marketing helpers
Marketing Skills
About 50 helpers for marketing work: copy, SEO and growth ideas.
Test: installs cleanly and works without an account. Not yet used on real work.
EveryoneWatch outAll content is text instructions. Some skills tell the agent to open web pages or read analytics data you give it.
For any assistantPaste this in the terminal npx skills add coreyhaines31/marketingskills Business helpers
VoltAgent business subagents
Ready helpers for business work: a product manager, a copywriter, a UX researcher and more.
Test: installs cleanly and works without an account. Not yet used on real work.
EveryoneWatch outThe legal and licence helpers give general guidance, not legal advice. Ask a lawyer for important decisions.
For Claude CodeStep 1 of 2 · Paste this in the terminal claude plugin marketplace add VoltAgent/awesome-claude-code-subagents