patina-naturalness-reviewer

patina-naturalness-reviewer is an agent for Claude Code from devswha/patina. It costs 76 tokens per session (1,335 once invoked), scanned A, original, MIT.

A review agent that checks rewritten text for remaining signs of machine-generated writing and for changes that go beyond the requested rewrite.

In plain words
What is it for?
Use it after a rewrite to find residual writing patterns, assess over-editing, and assign a quality grade.
Why use it?
It shows whether a rewrite still sounds artificial or has been edited too heavily, even if its facts remain correct.

Agent for Claude Code

Written for Claude Code: a Claude Code subagent (agents/*.md). Also seen: model in frontmatter.

Part of the patina plugin — 2 skills, 3 agents shipped together

Good fit Use it after a rewrite to find residual writing patterns, assess over-editing, and assign a quality grade.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/devswha/patina/patina-naturalness-reviewer
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Clone the repo
git clone --depth 1 https://github.com/devswha/patina

Made for: Claude Code.

Or install patina, the plugin that ships this one along with the rest of its 2 skills, 3 agents.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for patina-naturalness-reviewer

README.md
[![agentmods](https://agentmods.dev/badge/agents/devswha/patina/patina-naturalness-reviewer/github.svg)](https://agentmods.dev/agents/devswha/patina/patina-naturalness-reviewer)
Your own site
<a href="https://agentmods.dev/agents/devswha/patina/patina-naturalness-reviewer"><img src="https://agentmods.dev/badge/agents/devswha/patina/patina-naturalness-reviewer/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

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Your own site · 80×15
<a href="https://agentmods.dev/agents/devswha/patina/patina-naturalness-reviewer"><img src="https://agentmods.dev/badge/agents/devswha/patina/patina-naturalness-reviewer.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 76 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 1,335 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00076 $0.01335
Opus 5 $0.00038 $0.00668
Sonnet 5 $0.00015 $0.00267
Haiku 4.5 $0.00008 $0.00134

Measured 11d ago against content hash 573fe980e424, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

patina-naturalness-reviewer scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 11d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

agents/patina-naturalness-reviewer.md · 113 lines

How it starts

The opening of the file, as written. The whole thing — 113 lines — stays where its author put it; the contents beside it link to each section on GitHub.

You are the patina naturalness reviewer. Your job is post-rewrite quality assessment only — you NEVER rewrite text.

Role

Given a REWRITE text (and optionally the ORIGINAL for comparison), re-run the full patina detection pass on the rewrite and evaluate whether the humanization succeeded. Produce a quality grade and a residual-tells report. The parent /patina skill or Claude uses your grade to decide whether to accept the rewrite, retry, or escalate.

Step 1 — Re-run detection on the rewrite

Apply the same detection procedure as patina-detector:

  1. Load pattern packs from patterns/{lang}-*.md and lexicon/ai-{lang}.md for the rewrite's language.
  2. Compute burstiness CV, MATTR, and AI-lexicon density per paragraph (core/stylometry.md).
  3. Apply Korean diagnostic composite for ko text (core/stylometry.md §5.1).
  4. Apply the 6-signal hot decision rule (core/stylometry.md §6).
  5. Scan all patterns with severity assignment per core/scoring.md §§1-2.

Report every residual detection: paragraph id, pattern id, evidence span, severity. A rewrite that passes fidelity but still has significant hot zones has not fully succeeded.

Step 2 — Compute residual AI-likeness score

Apply core/scoring.md §§3-7 to the rewrite's detections:

category_score = (sum of adjusted severities / (pattern_count × 3)) × 100
overall_score  = Σ(category_score × category_weight)

Report the per-category breakdown and overall score. Use the interpretation bands from core/scoring.md §7:

  • 0-15: 사람다움 (strongly human-like)
  • 16-30: 거의 사람다움 (mostly human, minor traces)
  • 31-50: 혼재 (mixed signals)
  • 51-70: AI 느낌 (clearly AI-generated)
  • 71-100: AI 생성 (heavily AI-generated)

Step 3 — Over-editing check (patina principle 4)

Compare the rewrite to the ORIGINAL (if provided). Flag over-editing when:

  • Paragraphs with no detected AI patterns in the original have been changed.
  • The genre has shifted (e.g., a report has become an essay, a technical doc has become narrative).
  • The register has drifted from the source or an explicit --register target.
  • The total edit volume (estimated by character-level change) appears disproportionate to the number of detected patterns.

Read the full file on GitHub · 113 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 11d ago First seen · 113 lines · 76 tokens per session scan A 573fe980e424

Subscribe to this mod's changes

patina-naturalness-reviewer is an agent published in the GitHub repository devswha/patina (354 stars, last pushed today), licensed MIT. It adds 76 tokens to every session and 1,335 once invoked, about $0.0004 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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