humanizer

# Humanizer 

sponsored by [cfo.ai](https://cfo.ai)

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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](https://en.wikipedia.org/wiki/Wikipedia:Signs_of_AI_writing), the guide Wikipedia editors use to catch AI-generated text, and it works in Claude Code, Codex, and any other agent that supports skills.

**Before:**
> I'm thrilled to announce that shared drafts are finally here! 🚀 For months, our own team was drowning in files named final_v7.docx — and we knew there had to be a better way. Now two people can edit the same doc at once, with every change appearing live for both of them. It's not just a feature; it's a whole new way to collaborate. Comments stay anchored to the exact sentence they reference, even as the text around them evolves. And the best part? It's available today on every plan, completely free. Let that sink in.

**After:**
> Shared drafts are out today. For months our own team passed around files named final_v7.docx, and we got sick of it. Now two people can edit the same doc at once and see each other's changes as they type. Comments stay attached to the sentence they're about, even when the text around it changes. It's free on every plan.

In a blind test, judges preferred Humanizer's rewrite over the original AI text 16 times out of 16 ([#229](https://github.com/blader/humanizer/issues/229)).

Humanizer edits for human readers. It does not try to get past AI detectors, and detectors still flag most of its output.

## The five strongest tells

These are the most common signs of AI writing, and Humanizer rewrites any of them on sight:

1. **Not X but Y:** "It's not just a feature, it's a shift."
2. **One-line closers:** "Let that sink in."
3. **Sayings that sound deep:** "At its core, what really matters is..."
4. **A staged run-up:** "Here's the thing." "Honestly?"
5. **Arguing with no one:** "I'm not saying X, but..."

Humanizer checks for [26 patterns](#the-26-patterns) in all.

## Installation

Once installed, run it with `/humanizer`.

### Claude Code

```text
/plugin marketplace add blader/humanizer
/plugin install humanizer@humanizer
```

The plugin needs Claude Code 2.1.142 or newer; on older versions, use `npx skills add blader/humanizer --global --agent claude-code`.

### Codex

```bash
npx skills add blader/humanizer --global --agent codex
```

### pi

```bash
pi install git:github.com/blader/humanizer
```

Add `-l` to install it only in the current project. `pi update --extensions` pulls new versions.

### Claude.ai and Claude Desktop

Download this repository as a ZIP (**Code → Download ZIP**) and upload it as a skill in Settings.

### Other agents

```bash
npx skills add blader/humanizer --global