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.
/plugin marketplace add epicsagas/Velith/plugin install velithWrote 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/epicsagas/velith/book-genre-creator)<a href="https://agentmods.dev/skills/epicsagas/velith/book-genre-creator"><img src="https://agentmods.dev/badge/skills/epicsagas/velith/book-genre-creator/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/epicsagas/velith/book-genre-creator"><img src="https://agentmods.dev/badge/skills/epicsagas/velith/book-genre-creator.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 | $0.00045 | $0.01264 |
| Opus 5 | $0.00023 | $0.00632 |
| Sonnet 5 | $0.00009 | $0.00253 |
| Haiku 4.5 | $0.00005 | $0.00126 |
Grade A, and why
book-genre-creator 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 — 89 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Genre Creator
Use when the project does not fit a built-in genre cleanly, or when the author is unsure which genre applies. Read ${CLAUDE_PLUGIN_ROOT}/skills/loom/quality-bar.md and the candidate genre skills.
Built-in genres
| Genre | Skill | Core shape | Best for |
|---|---|---|---|
| fiction | book-fiction |
Three-act / 15-beat / bespoke; scene craft; character depth | Novels, novellas, short stories, web novels |
| non-fiction | book-nonfiction |
Problem → principles → practice; evidence discipline | Business, self-help, essays, memoir, narrative nonfiction |
| technical | book-technical |
Concept gradient + running project; failure-first | Programming, engineering, data science |
| screenplay | book-screenplay |
Three-act + eight sequences; subtext | Film, TV, web series |
| poetry | book-poetry |
Form, line, collection arc | Collections, chapbooks |
| game | book-game |
Branching, quests, lore bible | Game scenarios, visual novels, interactive fiction |
| academic | book-academic |
IMRAD / discipline structures; citation integrity | Theses, dissertations, monographs |
Selection
Three questions, then route:
- What is the reader doing with it? (living a story / learning to understand / learning to do / watching / playing / reading aloud / examining)
- What does the author fear most going wrong? (boring middle / being wrong / being unclear / being obvious / being inconsistent)
- What does "done" look like? (a bound book / a script / a build / a submission)
Hybrids are common: a memoir with a practical framework (nonfiction, narrative spine); a technical book with a fictional running story (technical, with fiction scene craft for the story sections); an illustrated poetry-essay (poetry + nonfiction). Most hybrids are a primary genre with a borrowed section from another; write that into genre-custom.md rather than inventing a new genre.
Custom genre spec
Write genre-custom.md in the project root. Agents read it in place of a built-in genre skill.
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 · -23 lines · +10 tokens per session 4a8936e5254b
- 11d ago First seen · 112 lines · 35 tokens per session scan A 1ec23bbc64d8
book-genre-creator is a skill published in the GitHub repository epicsagas/Velith (35 stars, last pushed 5d ago), licensed Apache-2.0. It adds 45 tokens to every session and 1,264 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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