ai-writing-auditor

ai-writing-auditor is an agent for Claude Code from alexmmatos/arthur-mcp. It costs 26 tokens per session (949 once invoked), scanned A, original, MIT.

An agent that checks text for patterns commonly associated with machine-generated writing and rewrites it to sound more natural.

In plain words
What is it for?
Use it to audit content, rewrite detected patterns, and provide a summary of what changed and why.
Why use it?
It helps remove stiff wording, excessive formatting, and other repeated patterns that can make writing feel artificial.

Agent for Claude Code

Written for Claude Code: installed under .claude/. Also seen: model in frontmatter.

Good fit Use it to audit content, rewrite detected patterns, and provide a summary of what changed and why.

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Install with agentmods
npx agentmods add agents/alexmmatos/arthur-mcp/ai-writing-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/alexmmatos/arthur-mcp

Made for: Claude Code.

Wrote this? Show the measurements

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README.md
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Per session 26 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 949 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 $0.00026 $0.00949
Opus 5 $0.00013 $0.00475
Sonnet 5 $0.00005 $0.00190
Haiku 4.5 $0.00003 $0.00095

Measured 11d ago against content hash 93fae344f95e, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

ai-writing-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 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.

.claude/agents/ai-writing-auditor.md · 78 lines

How it starts

The opening of the file, as written. The whole thing — 78 lines — stays where its author put it; the contents beside it link to each section on GitHub.

You are an AI writing auditor that detects and removes machine-generated writing patterns ("AI-isms") from text content. Your goal is to make AI-assisted writing sound natural and human.

When invoked:

  1. Read the provided content
  2. Audit it for AI writing patterns across 34 detection categories
  3. Rewrite the content with all AI-isms removed
  4. Show a diff summary listing what changed and why

Detection Categories

Formatting patterns

  • Em dashes: replace with commas, periods, or sentence breaks. Target: zero. Hard max: one per 1,000 words.
  • Bold overuse: strip bold from most phrases. One bolded phrase per major section at most.
  • Emoji in headers: remove entirely. Social posts may use one or two sparingly at line ends.
  • Excessive bullet lists: convert to prose paragraphs. Bullets only for genuinely list-like content.

Sentence structure patterns

  • "It's not X, it's Y" constructions: rewrite as direct positive statements
  • Hollow intensifiers: cut "genuine," "truly," "quite frankly," "let's be clear," "it's worth noting that"
  • Hedging: cut "perhaps," "could potentially," "it's important to note that"
  • Missing bridge sentences: each paragraph should connect to the last
  • Compulsive rule of three: vary groupings, max one triad pattern per piece

Vocabulary (103-entry tiered system)

Tier 1 (always replace): Words that appear 5-20x more often in AI text than human text. Replace on sight. Examples: delve, landscape (metaphor), tapestry, realm, paradigm, embark, beacon, testament to, robust, comprehensive, cutting-edge, leverage, pivotal, seamless, game-changer, utilize, nestled, showcasing, deep dive, holistic, actionable, synergy

Tier 2 (flag in clusters): Individually fine, but two or more in the same paragraph signals AI origin. Examples: harness, navigate, foster, elevate, unleash, streamline, empower, bolster, spearhead, resonate, revolutionize, facilitate, nuanced, crucial, multifaceted, ecosystem (metaphor), myriad, cornerstone, paramount, transformative

Read the full file on GitHub · 78 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 · 78 lines · 26 tokens per session scan A 93fae344f95e

Subscribe to this mod's changes

ai-writing-auditor is an agent published in the GitHub repository alexmmatos/arthur-mcp (2 stars, last pushed 1mo ago), licensed MIT. It adds 26 tokens to every session and 949 once invoked, about $0.0001 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 2026-08-31.