Humanizer: pricing, features, alternatives

Humanizer is a loadable agent skill that rewrites AI-sounding text so it reads like a person wrote it, without changing the claims. The repo blader/humanizer is MIT, created 2026-01-18. On 2026-09-06 GitHub listed about 43,874 stars and 3,670 forks. Homepage on the repo is skills.sh/blader/humanizer. r/PromptEngineering was discussing Wikipedia's Signs of AI Writing checklist skills this week; Humanizer is the high-star implementation of that guide, not a YouMind marketplace Skill.

Compare Claude Skills if you wanted how SKILL.md loads, Writing Skills if you wanted a meta-skill for writing skills themselves, or Scientific Writing if the draft is a paper.

Key Features

35 Wikipedia-derived patterns: README maps inflated importance, stock vocabulary, "not X but Y", em dash overuse, chatbot leftovers, filler, and more to before/after examples. Source: Wikipedia: Signs of AI writing.
Facts stay put: Names, numbers, dates, quotes, and citations must come from the source or the writer. The skill is not allowed to invent them.
Voice matching: Paste 2-3 paragraphs of your own writing and Humanizer follows that sample instead of its default style rules.
File-aware: Point it at a Markdown file and it rewrites prose only, leaving code, data, frontmatter, and link targets alone.
Cross-agent install: npx skills add blader/humanizer --global, Claude Code plugin marketplace, or copy SKILL.md into the agent's skill folder. Version 2.11.2 on the README.

Limitation: English-first. Several checks, especially dash frequency, do not map cleanly onto other languages. A zero-dash, zero-contrast rewrite can still read fake.

Use Cases

People shipping blog posts, docs, or social copy who can see the AI tells and want a silent self-edit pass.
Claude Code / Codex / Cursor users who already load skills and want /humanizer on a file.
Editors who need the agent to show the first rewrite and a short critique before the final version.

Pricing

GitHub on 2026-09-06.

Piece	Price	Notes from first-party pages
humanizer	$0	MIT. About 43,874 stars.
Host agent	Confirm that product	Claude Code, Codex, Cursor, or any skill loader.

A smaller MIT checklist in the same Wikipedia lineage is Avinashricky211/writ (about 20 stars the same day). Treat Humanizer as the catalog pick.

Getting Started

Open github.com/blader/humanizer and read SKILL.md.
Install with npx skills add blader/humanizer --global, or copy the skill into your agent folder.
Run /humanizer on pasted text, or ask it to humanize a file path.
Confirm Claude Skills if you still need the loader docs.

First-party resource: Humanizer README.

Frequently Asked Questions

Does it detect AI, or rewrite it?

Rewrite. It is a self-edit checklist, not an AI-detector score.

Will it fabricate travel dates or quotes?

README says no. Missing details should be asked for, not invented.

Same as YouMind Skills?

No. This is a SKILL.md for coding agents. YouMind Skills live inside YouMind.

Alternatives

Claude Skills: How skills load in Claude Code.
Writing Skills: Meta-skill for writing other skills.
Scientific Writing: Academic register, not AI-tell cleanup.

Tips

Quote 43,874 stars, MIT, and 35 patterns from the README checked 2026-09-06.
Give a writing sample if you care about voice.
Do not treat a clean Humanizer pass as proof the text was never AI-assisted.

Conclusion

Humanizer is a 43k-star MIT skill that applies Wikipedia's AI-writing tells as a rewrite checklist. Start at github.com/blader/humanizer, then decide whether Claude Skills already covers how you load skills.