book-outline

book-outline is a skill for Claude Code from epicsagas/Velith. It costs 38 tokens per session (1,213 once invoked), scanned A, original, Apache-2.0.

A book-planning stage that arranges the material into a structure, defines each chapter, and checks how ideas depend on one another.

In plain words
What is it for?
It is for creating chapter specifications and outlines for fiction, non-fiction, and technical books, including prerequisites and validation results.
Why use it?
It prevents chapters from appearing in a confusing order and exposes missing, repeated, or circular explanations.

Skill for Claude Code

Written for Claude Code: argument-hint in frontmatter.

Runs only inside its plugin — its command needs a path that Claude Code sets for a plugin’s own hooks and for nothing else. Install the plugin, not this.

Part of the velith plugin — 18 skills, 12 agents shipped together

Good fit It is for creating chapter specifications and outlines for fiction, non-fiction, and technical books, including prerequisites and validation results.

Compare 6 skills from other repositories ↓
Install

Getting it into your agent

This one installs as part of its plugin. Adding the marketplace and installing the plugin brings it with everything else the plugin ships.

Claude Code
/plugin marketplace add epicsagas/Velith
Claude Code
/plugin install velith

Made for: Claude Code.

Or install velith, the plugin that ships this one along with the rest of its 18 skills, 12 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 book-outline

README.md
[![agentmods](https://agentmods.dev/badge/skills/epicsagas/velith/book-outline/github.svg)](https://agentmods.dev/skills/epicsagas/velith/book-outline)
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 book-outline

Your own site · 80×15
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Per session 38 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,213 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 $0.00038 $0.01213
Opus 5 $0.00019 $0.00607
Sonnet 5 $0.00008 $0.00243
Haiku 4.5 $0.00004 $0.00121

Measured 4d ago against content hash 6cd8d314b918, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

book-outline 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 4d 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.

skills/book-outline/SKILL.md · 74 lines

How it starts

The opening of the file, as written. The whole thing — 74 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Phase 2: Outlining

Goal: an outline detailed enough that each chapter can be drafted in full context without inventing structure, and a bible that keeps twenty chapters telling one story or making one argument.

Read PRD.md, STYLE.md, ideation.md, sources/INDEX.md, the genre skill, and ${CLAUDE_PLUGIN_ROOT}/skills/loom/quality-bar.md.

Process

  1. Invoke book-architect with the project directory. It produces outline.md (draft) and bible.md (initial), then validates its own structure and writes the score and issues into outline.md's ## Validation section.
  2. Review the validation. If the score is below 8/10 or any Critical issue remains, have book-architect revise once. If still below, surface the issues to the author instead of iterating blindly.
  3. Author checkpoint. Present: the structural shape (one paragraph), the chapter list with one-line purposes, the pacing map, the top three risks the architect flagged, and the bible summary. Ask for approval or changes. Required stop.
  4. On approval, add ## Approval to outline.md with the date and any author notes. The router treats an outline without this section as unapproved.

What a chapter spec must contain

The chapter-writer will draft from this spec plus the full manuscript so far. Anything missing here gets invented inconsistently. Per chapter:

  • Title (working) and slug
  • Purpose — what this chapter changes for the reader. If two chapters have the same purpose, one is redundant.
  • Entry state — where the reader (and, for fiction, the protagonist) is at the start: what they know, want, fear, believe
  • Exit state — same, at the end. The delta is the chapter.
  • Pull — the question or tension that carries the reader through this chapter
  • Content — for fiction: 2-5 scene seeds (situation, turn, what is at stake); for nonfiction: the claims made, evidence used (source IDs), the example or story that anchors it; for technical: concepts, the code artifact built, the failure shown
  • Sets up / pays off — references to other chapters by number
  • Must not — repetitions to avoid, things the reader must not learn yet, tonal limits
  • Length target and difficulty (nonfiction/technical)
  • Sources — IDs from sources/INDEX.md

Read the full file on GitHub · 74 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. 4d ago Changed · +43 lines · +10 tokens per session 6cd8d314b918
  2. 9d ago First seen · 31 lines · 28 tokens per session scan A fddadefe5136

Subscribe to this mod's changes

book-outline is a skill published in the GitHub repository epicsagas/Velith (34 stars, last pushed 4d ago), licensed Apache-2.0. It adds 38 tokens to every session and 1,213 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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