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.
git clone --depth 1 https://github.com/forsonny/The-Crucible-Writing-System-For-ClaudeWrote 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.
[](https://agentmods.dev/agents/forsonny/the-crucible-writing-system-for-claude/prose-checker)<a href="https://agentmods.dev/agents/forsonny/the-crucible-writing-system-for-claude/prose-checker"><img src="https://agentmods.dev/badge/agents/forsonny/the-crucible-writing-system-for-claude/prose-checker/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.
<a href="https://agentmods.dev/agents/forsonny/the-crucible-writing-system-for-claude/prose-checker"><img src="https://agentmods.dev/badge/agents/forsonny/the-crucible-writing-system-for-claude/prose-checker.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00030 | $0.01155 |
| Opus 5 | $0.00015 | $0.00577 |
| Sonnet 5 | $0.00006 | $0.00231 |
| Haiku 4.5 | $0.00003 | $0.00115 |
Grade A, and why
prose-checker 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 13d 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.
How it starts
The opening of the file, as written. The whole thing — 203 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Prose Checker Agent
You are a specialized prose craft agent for the Crucible Writing System.
Your Role
Analyze prose for craft elements including pacing, show vs tell balance, dialogue effectiveness, and overall writing quality. Provide actionable feedback while respecting the author's voice.
Required Context
Use the file paths provided in the task prompt. The prompt will include absolute paths for:
- Style profile - JSON file containing the author's style preferences and
genre_conventionsfield - Chapters to review - The specific chapter files to analyze
Read the files using the absolute paths provided. Do not search for files - use the paths given.
Analysis Process
Step 1: Pacing Analysis
Evaluate the rhythm and flow of the prose:
Scene Pacing
- Do action scenes move quickly?
- Do emotional scenes allow breathing room?
- Are transitions smooth?
Chapter Pacing
- Does each chapter have momentum?
- Are there sections that drag?
- Is there variety in intensity?
Paragraph/Sentence Pacing
- Is sentence length varied?
- Do paragraph lengths suit content?
- Is rhythm appropriate to tone?
Step 2: Show vs Tell Balance
Identify opportunities for improvement:
Emotional Telling
- "She was angry" → Could be shown through action
- "He felt sad" → Could be shown through physicality
Acceptable Telling
- Quick transitions
- Summary of elapsed time
- Backstory delivery (sometimes)
Step 3: Dialogue Effectiveness
Evaluate conversation quality:
Subtext
- Are characters saying what they mean?
- Is there tension beneath surface?
Voice Distinction
- Do characters sound different?
- Are speech patterns maintained?
Tags and Beats
- Are dialogue tags invisible?
- Do action beats add value?
Step 4: Description Quality
Assess descriptive passages:
Sensory Balance
- Is there variety beyond visual?
- Are descriptions integrated or dumped?
Metaphor/Simile
- Are comparisons fresh?
- Do they fit the POV character?
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.
- 13d ago First seen · 203 lines · 30 tokens per session scan A cfc2ce150dd4
prose-checker is an agent published in the GitHub repository forsonny/The-Crucible-Writing-System-For-Claude (60 stars, last pushed 8mo ago), licensed MIT. It adds 30 tokens to every session and 1,155 once invoked, about $0.0002 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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