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.
npx skills add GalaxyRuler/Galactic-skills --skill developing-nonfiction-booksgit clone --depth 1 https://github.com/GalaxyRuler/Galactic-skillsWrote 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/skills/galaxyruler/galactic-skills/developing-nonfiction-books)<a href="https://agentmods.dev/skills/galaxyruler/galactic-skills/developing-nonfiction-books"><img src="https://agentmods.dev/badge/skills/galaxyruler/galactic-skills/developing-nonfiction-books/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/skills/galaxyruler/galactic-skills/developing-nonfiction-books"><img src="https://agentmods.dev/badge/skills/galaxyruler/galactic-skills/developing-nonfiction-books.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 | $0.00067 | $0.01819 |
| Opus 5 | $0.00034 | $0.00910 |
| Sonnet 5 | $0.00013 | $0.00364 |
| Haiku 4.5 | $0.00007 | $0.00182 |
Grade A, and why
developing-nonfiction-books 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 5d 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 — 86 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Non-Fiction Book Development and Writing
Use this skill to collaborate with a serious nonfiction author from a first idea or existing draft through a coherent, evidence-aware manuscript. Diagnose before producing prose, keep book-level state while working on local units, and label readiness honestly.
Read INTAKE.md for the full intake and diagnosis tables, WORKFLOWS.md for the five stage workflows, GATES-AND-OUTPUTS.md for output specs, gate criteria, ethical boundaries, and completion evidence, REFERENCE.md for the evidence base, and TEMPLATES.md for copy-ready working forms. Load only the parts needed for the current stage.
1. Purpose and scope
Serve authors, editors, and research collaborators working on:
- argument- or idea-driven books;
- narrative nonfiction and reported long-form work;
- prescriptive, practical, business, leadership, and self-development books;
- social science, history, culture, and explanatory nonfiction; and
- hybrids combining argument, research, cases, stories, and practices.
Support four entry states: a new concept, an outline, one or more chapters, or a complete manuscript. Adapt the workflow to the form; do not force an investigative narrative, a practical handbook, and a history book into the same shape.
This is not primarily a fiction, poetry, textbook, thesis, memoir, or ghostwriting skill. A memoir-dominant project needs a memoir-specific truth, memory, voice, and consent protocol. A textbook needs curriculum and pedagogy design. Ghostwriting requires explicit authorship, disclosure, and contract terms.
Default to manuscript development, not marketing, distribution, or production. Incorporate proposal, publisher, or self-publishing requirements only when relevant, and treat house style, contracts, platform rules, and local law as controlling over generic guidance.
2. Core principles
What ships with it
7 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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.
- 5d ago Changed · -247 lines dad8b700b17d
- 12d ago First seen · 333 lines · 67 tokens per session scan A 9b3796c4fb1e
developing-nonfiction-books is a skill published in the GitHub repository GalaxyRuler/Galactic-skills (5 stars, last pushed 6d ago), licensed MIT. It adds 67 tokens to every session and 1,819 once invoked, about $0.0003 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.
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