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Humanizer: make AI-written text sound like a person

A writing skill that finds the tell-tale habits of AI text, such as "it's not just X, it's Y", staged run-ups and one-line closers, and rewrites the passage so it reads like a person wrote it, without changing the facts or the meaning.

In short: A writing skill that finds the tell-tale habits of AI text, such as "it's not just X, it's Y", staged run-ups and one-line closers, and rewrites the passage so it reads like a person wrote it, without changing the facts or the meaning. It is a free skill for people who use Claude Code, Codex, Claude or Cursor and want help with social & content.

Checked on · Added

Works with

Agent / toolAccess / costLink
Claude CodePaid Claude plan or APIclaude.com/claude-code
CodexChatGPT plan or APIopenai.com/codex
ClaudeFree tier + paidclaude.ai
CursorFree tier + paidcursor.com
GitHub repoOpen source · ★ 59.8kblader/humanizer

Reference videos (1)

Real videos made with this skill, credited to their creators. Hover to preview.

Humanizer in Codex: a flat AI draft rewritten to sound human thumbnailAPP DEMO1:06

Humanizer in Codex: a flat AI draft rewritten to sound human

A real Codex session: the agent first writes a short piece that reads flat and generic, is then asked to use Humanizer, finds the installed skill and rewrites the piece in a more natural voice.

Humanizer@AI_DVD6♥ 11

Try it in 60 seconds

/plugin marketplace add blader/humanizer
/plugin install humanizer@humanizer
npx skills add blader/humanizer --global --agent codex

Install command copied from the project README. Check the README for the latest version.

What it does

A writing skill that finds the tell-tale habits of AI text, such as "it's not just X, it's Y", staged run-ups and one-line closers, and rewrites the passage so it reads like a person wrote it, without changing the facts or the meaning.

Humanizer makes AI-written text sound like a person wrote it, without changing what it says. It is built on Wikipedia's Signs of AI writing, the guide Wikipedia editors use to catch AI-generated text, and it works in…

Short excerpt from the README of blader/humanizer. Read the full README on GitHub.

Inside the repo

The five strongest tellsInstallationClaude CodeCodexClaude.ai and Claude DesktopOther agentsUsageMatch your voiceHow it worksThe 26 patternsA. Staging instead of statingB. Rhythm by rule

A prompt to try

/humanizer Here are two paragraphs I wrote, use them for my voice: [sample]. Now humanize this post without changing any facts or numbers: [text]

Written by us so you can reuse it. Replace each [bracket] with your details.

Step by step

  1. Claude Code: run /plugin marketplace add blader/humanizer, then /plugin install humanizer@humanizer.
  2. Codex or other agents: run npx skills add blader/humanizer --global --agent codex (or --agent '*' for every supported agent).
  3. Claude.ai or Claude Desktop: download the repo as a ZIP and upload it as a skill in Settings.
  4. Call /humanizer and paste your text, or ask it to humanize the prose in a file.
  5. For your own voice, add two or three paragraphs you wrote yourself as a sample.

Watch out for

It edits for human readers, not to beat AI detectors; the author says detectors still flag most of its output. It shows a first rewrite, a critique and a final version, so read the final one before you publish. The README carries a sponsor link you don't need.

Common questions

What does Humanizer do?

A writing skill that finds the tell-tale habits of AI text, such as "it's not just X, it's Y", staged run-ups and one-line closers, and rewrites the passage so it reads like a person wrote it, without changing the facts or the meaning.

Which AI agents can use Humanizer?

It works with Claude Code, Codex, Claude and Cursor. The code is on GitHub at blader/humanizer.

Is Humanizer free?

Free & open source (MIT). It uses the AI model you already pay for; nothing else to buy.

How do I install Humanizer?

Run the install command from the README: “/plugin marketplace add blader/humanizer”. Check the README on GitHub for the latest version, then follow the steps on this page.

Is Humanizer safe to install?

We read 8 instruction and code files in the repo and found no red flags. That is not a guarantee, so review anything that runs commands on your machine.

Sources & credit

All credit to the original authors. We rewrite in our own words and link back. Something wrong? Report it.

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