crucible-write

crucible-write is a command for Claude Code from forsonny/The-Crucible-Writing-System-For-Claude. It costs 23 tokens per session (650 once invoked), scanned A, original, MIT.

A command for drafting novel scenes from Crucible outlines, a 36-step story plan with three connected storylines. It writes one scene at a time and reviews the work after every two chapters.

In plain words
What is it for?
It is for starting at a chosen chapter, continuing from the last saved position, matching a style profile, checking scenes against the outline, and updating the story bible.
Why use it?
It keeps drafting tied to the planned story while checking progress as the manuscript grows.

Command for Claude Code

Written for Claude Code: allowed-tools in frontmatter.

Part of the The-Crucible-Writing-System-For-Claude plugin — 4 skills, 8 commands, 5 agents shipped together

Good fit It is for starting at a chosen chapter, continuing from the last saved position, matching a style profile, checking scenes against the outline, and updating the story bible.

Compare 6 commands from other repositories ↓
Install with agentmods
npx agentmods add commands/forsonny/the-crucible-writing-system-for-claude/crucible-write
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/forsonny/The-Crucible-Writing-System-For-Claude

Made for: Claude Code.

Or install The-Crucible-Writing-System-For-Claude, the plugin that ships this one along with the rest of its 4 skills, 8 commands, 5 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 crucible-write

README.md
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Your own site
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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 crucible-write

Your own site · 80×15
<a href="https://agentmods.dev/commands/forsonny/the-crucible-writing-system-for-claude/crucible-write"><img src="https://agentmods.dev/badge/commands/forsonny/the-crucible-writing-system-for-claude/crucible-write.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 23 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 650 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 $0.00023 $0.00650
Opus 5 $0.00012 $0.00325
Sonnet 5 $0.00005 $0.00130
Haiku 4.5 $0.00002 $0.00065

Measured 12d ago against content hash ab9f03cdf1bc, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

crucible-write 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 12d 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.

commands/crucible-write.md · 80 lines

How it starts

The opening of the file, as written. The whole thing — 80 lines — stays where its author put it; the contents beside it link to each section on GitHub.

/crucible-write

Write prose drafts scene-by-scene from your Crucible outlines.

Execution Instructions

IMPORTANT: When this command is invoked, you MUST:

  1. Invoke the crucible-suite:crucible-writer skill using the Skill tool
  2. The skill will guide you through the complete writing workflow
  3. Verify outline is complete before writing
  4. Follow the skill's scene-by-scene protocol
  5. Track chapter completion and trigger bi-chapter reviews per the skill instructions
  6. When triggering reviews, use the Task tool with the 5 review agent subagent_types

Usage

  • /crucible-suite:crucible-write 1 - Start writing chapter 1
  • /crucible-suite:crucible-write 5 - Jump to chapter 5
  • /crucible-suite:crucible-write continue - Resume from last position

What This Does

  1. Activates the crucible-writer skill (you must follow its instructions)
  2. Loads your chapter outline and style profile
  3. Writes scene-by-scene, matching your voice
  4. Verifies each scene against the outline
  5. Updates the story bible after each chapter
  6. Triggers bi-chapter reviews every 2 chapters

Bi-Chapter Reviews

Every 2 chapters, the system automatically triggers a comprehensive review using 5 specialized agents:

Agent Focus
voice-checker Style/voice consistency
continuity-checker Plot/character continuity
outline-checker Outline fidelity
timeline-checker Chronological consistency
prose-checker Craft-level feedback

Reviews help catch issues before they compound.

Prerequisites

Requires:

  1. Completed chapter outlines from /crucible-suite:crucible-outline
  2. Style sample (2,000+ words of your writing) OR style preferences
  3. Crucible Summary Card (for quick reference)

Word Count Targets

Default targets per scene type:

  • Action scenes: 1,500-2,500 words
  • Dialogue scenes: 1,000-2,000 words
  • Reflection scenes: 800-1,500 words
  • Transitional scenes: 500-1,000 words

Anti-Hallucination

The writer follows strict rules:

  • Never invents plot points not in the outline
  • Never creates characters not in the Constellation Bible
  • Flags any [INVENTED] minor details for your review
  • Asks you if anything seems missing rather than guessing

Read the full file on GitHub · 80 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. 12d ago First seen · 80 lines · 0 tokens per session scan A ab9f03cdf1bc

Subscribe to this mod's changes

crucible-write is a command published in the GitHub repository forsonny/The-Crucible-Writing-System-For-Claude (60 stars, last pushed 8mo ago), licensed MIT. It adds 23 tokens to every session and 650 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 2026-08-30.