Is the Humanizer skill free?

Yes. The skill itself is free from blader/humanizer. SkillProof publishes the install command and an independent test verdict at no cost.

What is the Humanizer SkillProof Score?

9.6/10 — installs cleanly 5/5, triggers reliably 5/5, output vs. baseline 9/10, docs & honesty 5/5.

How do I install Humanizer?

Copy the install command from this page, run it in your terminal, and restart Claude Code. Skills live in ~/.claude/skills/ (global) or .claude/skills/ inside a project.

Can I use Humanizer with Cursor, Copilot, Gemini CLI, Codex or other AI tools?

The SKILL.md format is native to Claude (Claude Code, Desktop, claude.ai). The instructions inside adapt to other assistants: Cursor rules, GitHub Copilot instructions, Windsurf rules, Custom GPTs, AGENTS.md for OpenAI Codex, and GEMINI.md for Google Gemini CLI — our conversion guides cover each, and the free converter on the tools page does the wrapping for you.

Humanizer

Strips 33 documented AI-writing tells from text via a draft-audit-final rewrite loop.

by blader · blader/humanizer

Tested · Works Featured

Install — copy the command Download source ↗

Test report

Verdict: Tested · Works
Score: 9.6/10
Tested: Jul 14, 2026
Environment: Claude Code 2.x (agent harness)
Upstream re-checked: Aug 10, 2026 · 0a40275

Ran a sample AI-sounding product-launch paragraph through the draft→audit→final loop: the draft still had a stray em dash and a generic closer, and the mandatory second pass caught and fixed both — a step a single-pass edit skipped entirely.

Scored on four weighted criteria — install, triggering, output vs. baseline, docs. How scoring works

Installs cleanly 5/5
Triggers reliably 5/5
Output vs. baseline 9/10
Docs & honesty 5/5

What Humanizer does

Removes signs of AI-generated writing (em dashes, rule-of-three, vague attributions, inflated significance, filler, sycophancy, and 30 more patterns) based on Wikipedia's 'Signs of AI writing' guide. Runs a mandatory second audit pass ('what still looks AI-generated?') before the final rewrite, and supports optional voice-calibration from a writing sample. Single self-contained SKILL.md, no external dependencies.

Humanizer before / after — same task, with and without

Without the skill

In today's fast-paced digital landscape, it is important to note that our innovative solution delivers transformative results — streamlining workflows, boosting productivity, and unlocking new opportunities.

With Humanizer

Our tool saves teams about four hours a week. Three customers measured it; the median was 4.2 hours.

How to install Humanizer

git clone https://github.com/blader/humanizer
cd humanizer
mkdir -p ~/.claude/skills
cp -r . ~/.claude/skills/humanizer

Skills live in ~/.claude/skills/ (global) or .claude/skills/ (per-project). Restart Claude Code after installing.

Commands — how to trigger Humanizer

/humanizer Strips 33 documented AI-writing tells from text via a draft-audit-final rewrite loop.

It also activates on plain-language prompts like these:

Rewrite this paragraph so it doesn't read as AI-generated
Remove the em dashes and inflated language from this draft
Edit out the AI writing tells in this blog post

Appears in

Frequently asked questions

Is the Humanizer skill free?: Yes. The skill itself is free from blader/humanizer. SkillProof publishes the install command and an independent test verdict at no cost.
Does Humanizer work with Claude Code?: We tested it with Claude Code 2.x (agent harness) on Jul 14, 2026. Verdict: Tested · Works. Ran a sample AI-sounding product-launch paragraph through the draft→audit→final loop: the draft still had a stray em dash and a generic closer, and the mandatory second pass caught and fixed both — a step a single-pass edit skipped entirely.
What is the Humanizer SkillProof Score?: 9.6/10 — installs cleanly 5/5, triggers reliably 5/5, output vs. baseline 9/10, docs & honesty 5/5.
How do I install Humanizer?: Copy the install command from this page, run it in your terminal, and restart Claude Code. Skills live in ~/.claude/skills/ (global) or .claude/skills/ inside a project.
Can I use Humanizer with Cursor, Copilot, Gemini CLI, Codex or other AI tools?: The SKILL.md format is native to Claude (Claude Code, Desktop, claude.ai). The instructions inside adapt to other assistants: Cursor rules, GitHub Copilot instructions, Windsurf rules, Custom GPTs, AGENTS.md for OpenAI Codex, and GEMINI.md for Google Gemini CLI — our conversion guides cover each, and the free converter on the tools page does the wrapping for you.