One of the most starred writing skills, based on Wikipedia's guide to signs of AI-generated text. It rewrites drafts so they sound like the writer, removing stock phrases, forced patterns and inflated claims.

Who it is for

Writers
Marketers
Students
Anyone editing AI drafts

Prompts to try

Once the skill is installed, ask for the result in plain words. Claude picks the skill up on its own.

Prompt 1

Humanize this blog post so it doesn't read like AI

Prompt 2

Edit my LinkedIn post to remove the AI tells

Prompt 3

Review this email draft for AI writing patterns and fix them

How to install it

In Claude Code

>/plugin marketplace add blader/humanizer
>/plugin install humanizer@humanizer

In Claude.ai

Zip the skill folder and upload it under Customize > Skills > + > Create skill > Upload a skill.

Good to know

On older Claude Code versions use: npx skills add blader/humanizer --global --agent claude-code.

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How we checked it

Confirmed SKILL.md at the repo root in blader/humanizer via the GitHub API; skill folder last changed 2026-09-28, repo has 57,816 stars and was pushed 2026-10-16; also included in Trail of Bits' curated skills marketplace.

Source: github.com/blader/humanizer

Humanizer