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Writing & Prompts

Humanizer

Rewrites AI text so it reads like a person wrote it, without changing what it says.

Open sourceBy Siqi Chen (blader)
View source

What is it?

Humanizer is built on Wikipedia's "Signs of AI writing", the guide Wikipedia editors use to spot generated text. It checks for 26 patterns, including "not X but Y", one-line closers like "let that sink in", sayings that sound deep and staged run-ups like "here's the thing".

It marks every tell it finds, drafts a rewrite, critiques its own draft and then gives you the final version. Facts, names and numbers are never invented; if a detail is missing it asks. Give it a sample of your own writing and it matches your rhythm and quirks.

It edits for human readers, not to beat AI detectors.

Install in Claude Code

In Claude Code run /plugin marketplace add blader/humanizer, then /plugin install humanizer@humanizer (needs Claude Code 2.1.142 or newer). It answers to /humanizer:humanizer. In claude.ai, download the repo as a ZIP and upload it under Settings > Skills.

Try this prompt

Paste into Claude Code
/humanizer Here is a sample of my writing for voice matching: [two paragraphs]. Now humanize this launch email: [paste]

Who it's for

Anyone who publishes writing that started life in Claude: emails, posts, captions, landing-page copy.

Best for

  • Emails and newsletters
  • Social captions
  • Blog posts
  • Matching your own voice

Why it made the list

In a blind test judges preferred its rewrite over the original AI text 16 times out of 16.

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