patina-fidelity-auditor

patina-fidelity-auditor is an agent for Claude Code from devswha/patina. It costs 80 tokens per session (1,528 once invoked), scanned A, original, MIT.

A review agent that compares rewritten text with the original to check whether its meaning, claims, audience, tone, and length were preserved.

In plain words
What is it for?
Use it after producing a rewrite when accuracy against the original text matters.
Why use it?
It helps detect invented details, changed meaning, or unnecessary changes after a rewrite.

Agent for Claude Code

Written for Claude Code: shipped in a Claude Code plugin. Also seen: model in frontmatter.

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

Good fit Use it after producing a rewrite when accuracy against the original text matters.

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

README.md
[![agentmods](https://agentmods.dev/badge/agents/devswha/patina/patina-fidelity-auditor/github.svg)](https://agentmods.dev/agents/devswha/patina/patina-fidelity-auditor)
Your own site
<a href="https://agentmods.dev/agents/devswha/patina/patina-fidelity-auditor"><img src="https://agentmods.dev/badge/agents/devswha/patina/patina-fidelity-auditor/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.

agentmods 80×15 button for patina-fidelity-auditor

Your own site · 80×15
<a href="https://agentmods.dev/agents/devswha/patina/patina-fidelity-auditor"><img src="https://agentmods.dev/badge/agents/devswha/patina/patina-fidelity-auditor.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 80 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 1,528 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 $0.00080 $0.01528
Opus 5 $0.00040 $0.00764
Sonnet 5 $0.00016 $0.00306
Haiku 4.5 $0.00008 $0.00153

Measured 10d ago against content hash 0ef3ac25896d, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

patina-fidelity-auditor 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 10d 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-fidelity-auditor.md · 127 lines

How it starts

The opening of the file, as written. The whole thing — 127 lines — stays where its author put it; the contents beside it link to each section on GitHub.

You are the patina fidelity auditor. Your job is meaning-preservation audit only — you NEVER rewrite text.

Role

Given an ORIGINAL text and a REWRITE, verify that the rewrite faithfully preserves the original's meaning, claims, and semantic content. Produce a structured fidelity verdict. The parent /patina skill or Claude uses your verdict to decide whether to accept the rewrite or trigger rollback.

Prerequisites

Read core/scoring.md §§9-14 before auditing. The fidelity criteria, scoring formula, and verification floors defined there must be applied as written.

Patina's four non-negotiable principles (audit against all four)

  1. Meaning invariance — facts, claims, numbers, proper nouns, and direct quotes must be 100% preserved. Any deviation is a fidelity failure.
  2. Evidence-based — the rewrite should only change spans that contained detected AI patterns. Changes to clean text are a flag for over-editing.
  3. Genre preservation — the rewrite must not convert the genre (e.g., a formal report must not become an essay, a column must not become literature).
  4. No over-editing — excessive change is a fidelity concern even if individual changes look locally correct.

Audit checklist

10.1 Claims Preserved (core/scoring.md §10.1)

Check every factual claim in the ORIGINAL:

  • Is it present in the REWRITE (verbatim or accurately rephrased)?
  • Are numbered lists complete? Are causal chains intact?
  • Are key qualifiers (negation, conditionality, scope) preserved?

Score: High (3) / Medium (2) / Low (1) / Fail (0) per core/scoring.md §10.1 rubric. List any missing or distorted claims with the original span and the rewrite span (or absence).

10.2 No Fabrication (core/scoring.md §10.2)

Check every claim in the REWRITE:

  • Does each claim trace to the ORIGINAL?
  • Are any specific numbers, dates, names, or statistics invented?
  • Are there added assertions not present or implied by the original?

Score: High (3) / Medium (2) / Low (1) / Fail (0) per core/scoring.md §10.2 rubric. List any fabricated spans with the rewrite span and the reason it has no original basis.

Read the full file on GitHub · 127 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. 10d ago First seen · 127 lines · 80 tokens per session scan A 0ef3ac25896d

Subscribe to this mod's changes

patina-fidelity-auditor is an agent published in the GitHub repository devswha/patina (352 stars, last pushed yesterday), licensed MIT. It adds 80 tokens to every session and 1,528 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.

Related

Other agents, from other repositories

humanize-monolith

A Korean text editor that detects wording that sounds machine-generated, revises it, checks the result, and writes a final file in one run. It handles texts of up to 5,000 Korean characters.

epoko77-ai/im-not-ai · 141 tokens

humanize-diagnostician

A first-stage writing-review agent that examines a complete document and identifies the AI-writing patterns that dominate it. It records that diagnosis for a later editing step.

epoko77-ai/im-not-ai · 159 tokens

humanize-finalizer

A final review agent for rewritten text. It compares the original and edited versions to check that the meaning is preserved, the writing sounds natural, and only the affected passages are corrected.

epoko77-ai/im-not-ai · 164 tokens

korean-translation-scholar

A curation guide for adding Korean and international translation-scholarship citations to the Humanize KR project’s reference system. It separates short source markers in the main taxonomy from fuller explanations in a scholarship reference file.

epoko77-ai/im-not-ai · 180 tokens

post-editese-metric-engineer

A measurement tool for studying Korean writing patterns linked to post-editese, meaning wording that becomes simplified, standardized, or shaped by English sentence patterns during editing. It adds these measurements and eight detection signals to an existing metrics file.

epoko77-ai/im-not-ai · 158 tokens

quick-rules-integrator

An integration workflow for updating a compact rulebook used by a monolithic tool, checking its limits, and preparing a GitHub pull request and changelog.

epoko77-ai/im-not-ai · 151 tokens