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 agentmods add skills/janyork/llm-wiki-cli/using-booknpx skills add JanYork/llm-wiki-cli --skill using-bookgit clone --depth 1 https://github.com/JanYork/llm-wiki-cliWrote 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/janyork/llm-wiki-cli/using-book)<a href="https://agentmods.dev/skills/janyork/llm-wiki-cli/using-book"><img src="https://agentmods.dev/badge/skills/janyork/llm-wiki-cli/using-book.svg" alt="Measured on agentmods" 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 | $0.00028 | $0.00652 |
| Opus 5 | $0.00014 | $0.00326 |
| Sonnet 5 | $0.00006 | $0.00130 |
| Haiku 4.5 | $0.00003 | $0.00065 |
Grade A, and why
using-book 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 — 54 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Using Book
Use Book when the user wants whole-book absorption, ordered reading, or recovery of an active Book lease. Skip ordinary lookup, summarization of supplied excerpts, and unsupported HTML, scanned/OCR PDF, MOBI, or AZW3 input.
Book is a silent control plane. Do not narrate status checks, leases, locators, coverage commits, source lookup, or other routine tool calls. Never inspect its SQLite, plugin files, or runtime binaries and never probe CLI help for routine arguments. Give the user only the requested reading result, progress that materially affects them, or a concise actionable failure.
Enter or recover
- Inspect
LWC_READINESS.book. It is read-only capability metadata, not consent to enable, install, import, or expose book text. - If disabled, explain the durable local-data boundary and ask once before running
lwc --scope global config set --book enabled. An explicit enable request already supplies consent. Enabling does not download; the firstlwc book statusmay lazily install the fixed hash-verified runtime. - Run
lwc book status. Recover the current book and outstanding lease before import or new reading. Retry with the samerequest_id, owner, andif_revision. - After cross-machine recovery, require the latest successful Sync receipt and run an explicit exact-revision takeover. The old owner must stop writing after takeover.
Ordered reading
- Import only EPUB, TXT, Markdown, or text PDF. Preserve returned
book_id, source hash, anomalies, and preparation state. Never guess identity from title or tags. - Do not read until preparation reports validated ordered blocks and ready state.
- Call
read nextwith an explicit token or UTF-8-byte budget. Read the complete returned contiguous text and retain lease ID, revision, locators, and range hash. - Submit the required structured report with
read commit, owner, request ID, andif_revision. Coverage advances only after that commit succeeds. - Repeat until exact ordered coverage reaches 100%. Search, show, and peek never advance coverage. Synthesis still requires every hierarchy summary, mainline, relation, and anomaly disposition.
What ships with it
1 file 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 First seen · 54 lines · 28 tokens per session scan A 09778ef73b0d
using-book is a skill published in the GitHub repository JanYork/llm-wiki-cli (52 stars, last pushed today), licensed Apache-2.0. It adds 28 tokens to every session and 652 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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