Humanizer: editing out the habits that give AI prose away
Model-written prose leans on the same habits: contrasts that add weight but no claim, one-line closers, triads and dashes everywhere. Humanizer, built on Wikipedia's Signs of AI writing guide, marks those tells strongest first, drafts a rewrite, checks it against the original claims and then writes the final version.
Claude Code, Codex, Claude.ai, Claude Desktop, Gemini CLI, GitHub Copilot, Windsurf
What it does
Checks 26 patterns in six groups, including staging, rhythm by rule, inflated significance, formatting by rule and chat leftovers.
Acts on a single sighting of the five strongest tells, such as not X but Y, while weak-alone patterns need company before it edits.
Never adds a name, number, date, quote or citation that is missing from the source, and asks when a sentence needs one.
Matches your voice from a two-to-three-paragraph sample, following its sentence length, word choice, punctuation and even its dashes.
In file mode it rewrites prose only, leaving code blocks, commands, paths, frontmatter, data and link targets untouched.
When to use it
A launch post or press note drafted with a model reads like a template and needs a plain, specific edit.
A pull request description or commit message should read like an engineer wrote it before it goes public.
Documentation in a repo needs its filler removed without anyone touching the code samples.
Ask your agent
/humanizer Rewrite this feature announcement and drop the hype and the dramatic closers.
Humanize the prose in docs/release-notes.md, keep the code blocks as they are.
Here are three paragraphs of my own writing; match that voice when you humanize the draft below.
Questions
How do I install Humanizer in Claude Code?
Run /plugin marketplace add blader/humanizer and /plugin install humanizer@humanizer; the plugin needs Claude Code 2.1.142 or newer. Older versions can use npx skills add blader/humanizer --global --agent claude-code.
Does Humanizer work in Codex and Claude.ai?
Yes. Codex installs it with npx skills add blader/humanizer --global --agent codex, and Claude.ai or Claude Desktop take the repository as a ZIP uploaded in Settings.
Does Humanizer only handle English?
Its pattern list comes from an English Wikipedia guide, but the skill says constructions like not X but Y appear in every language and are treated the same way.
