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 instructions/booklib-ai/booklib/agents-mdgit clone --depth 1 https://github.com/booklib-ai/booklibWhat 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 | $0.00298 | $0.00298 |
| Opus 5 | $0.00149 | $0.00149 |
| Sonnet 5 | $0.00060 | $0.00060 |
| Haiku 4.5 | $0.00030 | $0.00030 |
Grade A, and why
booklib AGENTS.md 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 2d 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.
Copies of this mod
1 near-identical copy found in the catalogue:
- booklib CLAUDE.md — 91% identical, 1 lines differ
What it actually says
BookLib
Context engineering tool for AI coding assistants. Detects post-training knowledge gaps, resolves them via MCP.
Stack
JavaScript (Node.js >= 18, ES modules). No build step. No TypeScript.
Key Directories
bin/— CLI (booklib.js) and MCP server (booklib-mcp.js)lib/engine/— core: indexer, searcher, gap-detector, context-map, registrieslib/wizard/—booklib initinteractive wizardhooks/— PreToolUse/PostToolUse hooks for Claude Codeskills/— 23 bundled skills (SKILL.md files)tests/— 767 tests vianode:test
Commands
npm install— install depsnpm test— run all tests (must pass before committing)npm link— link for local CLI testingnode bin/booklib.js <cmd>— run CLI from source
Rules
- Always add a test when fixing a bug
- Never write to CLAUDE.md or other agent config files from code — MCP handles discovery
- MCP tools: lookup, review, remember, verify, guard (5 exposed, old names kept as aliases)
BookLib: knowledge tools for this project. Read skills/booklib-mcp-guide/SKILL.md before first use.
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.
- 2d ago First seen · 28 lines · 298 tokens per session scan A 1be93d5d8ec6
booklib AGENTS.md is an instructions file published in the GitHub repository booklib-ai/booklib (38 stars, last pushed 4mo ago), licensed MIT. It adds 298 tokens to every session, about $0.0015 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.
Other instructions, from other repositories
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