Claude Code plugin
Install the Claude Humanizer Skill in Claude Code
Agentic Humanizer is a free, open-source skill that has Claude rewrite AI-generated text in five passes, in your own voice if you hand it a sample. Paste the two commands into Claude Code, then type /slopornot:agentic-humanizer.
Paste into Claude Code
/plugin marketplace add numen-tech/slopornot
/plugin install slopornot@slopornot- The first command adds the slopornot marketplace.
- The second installs the plugin with both skills.
- Scripting the setup? After adding the marketplace, claude plugin install slopornot@slopornot does the same from your shell.
- Free and open source
- MIT-licensed on GitHub. There is no account to create and no humanizer subscription to pay for.
- Five rewrite passes
- Each pass changes something different: AI-writing patterns, tone, reading level, targeted edits, and, if the draft still reads generated, its structure.
- Slop or Not is optional
- The rewrite works without it. Add Slop or Not on a Mac with Pro and every pass gets an on-device score.
Run
How Do You Use the Humanizer Skill in Claude Code?
Type the command and paste your draft. Claude Code 2.0.21 and later show the skill's questions in one panel: language and variant, reading level, tone, and how far the length may drift. Answer them once and you can save them as your defaults. Plugin installs namespace the command, which is why it reads /slopornot:agentic-humanizer rather than /agentic-humanizer.
/slopornot:agentic-humanizer
[paste your AI-generated text here]To make the rewrite sound like you, save 200 or more words of your own writing to ~/.agentic-humanizer/voice.txt, or answer yes when the skill offers to match a writing sample. It reads rhythm, register, contractions, and phrasing from the sample, shows you what it found, and uses that only after you approve it.
Direct install
Prefer a Plain Skill? Use npx skills add
The skills CLI copies Agentic Humanizer and slop-check straight into Claude Code without the plugin. A direct install runs as /agentic-humanizer, with no slopornot: prefix. Restart Claude Code afterward so it finds the new skills.
npx skills add numen-tech/slopornotReference
Commands and Inline Flags
Put flags on the same line as the command and the skill skips the questions they answer. The profile commands read or clear what it saved under ~/.agentic-humanizer/.
| Flag or command | What it does |
|---|---|
language=<code> | Sets the target language, for example language=de. Without a variant, that language's default variant applies. |
variant=<spec> | Sets the variant, for example variant=de-AT. |
dialect=us | dialect=uk | Shorthand for American or British English. |
grade=N | Targets a Flesch-Kincaid grade. English only. |
level=<band> | Targets a reading-level band in any supported language, from elementary to graduate. |
tone=casual | professional | academic | Sets the tone of the rewrite. |
length=±10 | exp | trim | Keeps the length within 10 percent, lets it grow, or lets it shrink. |
threshold=N | Changes the AI-score target. Needs Slop or Not Pro. |
max=N | Changes the cap on measured passes. Needs Slop or Not Pro. |
voice=/path/to/file.txt | Matches this writing sample for one call. |
voice=off | voice-skip | Skips voice matching for one call. |
skip-interview | Skips the questions and uses your saved profile, or the defaults for the detected language. |
show profile | Prints your saved preferences. |
reset | Deletes your saved preferences. |
show voice | Prints the saved voice fingerprint and the path of your sample. |
reset voice | Deletes the saved voice sample and fingerprint. Your rewrite preferences stay. |
Example
What Does a Rewrite Look Like?
The before text opens the skill's own test fixture, and it trips almost every pattern the first pass hunts for: a stock opener, stacked buzzwords, and a sentence that promises everything and names nothing.
In today's rapidly evolving landscape, leveraging cutting-edge AI solutions has become not just a luxury but a necessity. Organizations across industries are increasingly turning to artificial intelligence to streamline operations, enhance productivity, and unlock new opportunities. By embracing the transformative potential of AI, businesses can navigate the complexities of the modern world and position themselves for long-term success.Plenty of companies now use AI somewhere, usually for the dull parts of a job: sorting support tickets, drafting first replies, summarizing long threads. The ones getting real value started small. They picked one task they could measure and checked the output by hand for a few weeks before trusting it.The after text is an illustrative rewrite, not captured output. Your result depends on your answers, your voice sample, and the model your agent runs.
Optional
Want a Score for Every Pass?
Install Slop or Not on a Mac with Apple silicon, turn on Pro, and the skill starts measuring. It strips hidden characters from the source, scores each pass with the on-device AI text detection model, checks the reading grade against your target, and cleans the final text again. The AI score reads English; other supported languages converge on readability instead. Detection runs on your Mac, and the rewriting still happens in your agent.
Frequently Asked Questions
Is the Claude humanizer skill free?
Yes. Agentic Humanizer is MIT-licensed and free on GitHub. Claude does the rewriting, so it runs on the Claude access you already have.
How is this different from a Claude humanizer prompt?
A prompt asks for one rewrite. The skill runs five passes that each change something different, from AI-writing patterns to tone, reading level, and structure, and it keeps a loop history so you can see what each pass did.
Do I need Slop or Not to use it?
No. The five-pass rewrite and voice matching run without it, and the loop history shows n/a where scores would go. Slop or Not on a Mac with Pro adds an on-device AI score, readability, and Text Cleanup to every pass.
Does it work in Claude Desktop?
Yes, as an uploaded skill. Claude Desktop has no plugin marketplace, so clone the repository and run make -C /tmp/slopornot/claude-skills to build a zip, then upload it under Settings, Capabilities, Skills.
Will the rewrite pass every AI detector?
Nobody can promise that, and we don't. AI detectors are probabilistic and they disagree with each other. The skill removes common AI-writing patterns and moves the draft toward your voice. Read the result yourself before you use it.
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