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 Ckokoski/AuthorAgent --skill blurb-writergit clone --depth 1 https://github.com/Ckokoski/AuthorAgentWrote 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/ckokoski/authoragent/blurb-writer)<a href="https://agentmods.dev/skills/ckokoski/authoragent/blurb-writer"><img src="https://agentmods.dev/badge/skills/ckokoski/authoragent/blurb-writer/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/ckokoski/authoragent/blurb-writer"><img src="https://agentmods.dev/badge/skills/ckokoski/authoragent/blurb-writer.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 | $0.00020 | $0.00398 |
| Opus 5 | $0.00010 | $0.00199 |
| Sonnet 5 | $0.00004 | $0.00080 |
| Haiku 4.5 | $0.00002 | $0.00040 |
Grade A, and why
blurb-writer 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 9d 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.
What it actually says
Blurb Writer
Craft blurbs that make readers click "Buy Now."
Blurb Formula (Fiction)
- Hook — One explosive sentence
- Character — Who are we rooting for? What makes them relatable?
- Setup — What's their world? What do they want?
- Inciting Incident — What goes catastrophically wrong?
- Stakes — What happens if they fail? (Personal + universal)
- Cliffhanger — End with a question that DEMANDS the reader buy the book
- Social Proof — Comp line or review quote
Blurb Formula (Nonfiction)
- Problem — What pain point does the reader have?
- Promise — What will this book deliver?
- Credibility — Why should they trust this author?
- Preview — What will they learn? (3-5 key takeaways)
- Transformation — Who will they become after reading?
- CTA — Why read this NOW?
Length Guidelines
- Amazon description: 150-200 words (with HTML formatting)
- Back cover: 100-150 words
- One-line pitch: Under 25 words
- Elevator pitch: Under 50 words
Anti-Patterns (Avoid)
- Starting with a question (overdone)
- "In a world where..." (cliché)
- Giving away the ending
- Using the word "must" more than once
- Being vague instead of specific
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.
- 9d ago First seen · 48 lines · 20 tokens per session scan A 66e468cb2909
blurb-writer is a skill published in the GitHub repository Ckokoski/AuthorAgent (105 stars, last pushed 1mo ago), licensed MIT. It adds 20 tokens to every session and 398 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.
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