Borrowing it
Nothing to install: this file belongs to sandraschi/calibremcp. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/sandraschi/calibremcp/master/AGENTS.mdgit clone --depth 1 https://github.com/sandraschi/calibremcpWrote 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/instructions/sandraschi/calibremcp/agents-md)<a href="https://agentmods.dev/instructions/sandraschi/calibremcp/agents-md"><img src="https://agentmods.dev/badge/instructions/sandraschi/calibremcp/agents-md/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/instructions/sandraschi/calibremcp/agents-md"><img src="https://agentmods.dev/badge/instructions/sandraschi/calibremcp/agents-md.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 | $0.00431 | $0.00431 |
| Opus 5.5 | $0.00172 | $0.00172 |
| Sonnet 5.5 | $0.00086 | $0.00086 |
| Haiku 4.5 | $0.00043 | $0.00043 |
Grade A, and why
calibremcp 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 2mo 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:
- calibremcp AGENTS.md — 94% identical, 4 lines differ
What it actually says
calibremcp — Agent Guide
Overview
SOTA April 2026 industrialized FastMCP 3.2.0 server for conversational Calibre e-book library management with sampling, agentic workflows, skills, prompts, and LanceDB metadata RAG
Entry Points
uv run schip-mcp-calibre→calibre_mcp.__main__:run
Standards
- FastMCP 3.2+ portmanteau tool pattern — tools use
operationenum param - Responses: structured dicts with
success,message, domain-specific fields - Dual transport: stdio (Claude Desktop) + HTTP (
MCP_TRANSPORT=http) - See mcp-central-docs for fleet-wide coding standards
Key Files
README.md— full documentationpyproject.toml— build config and entry pointsCLAUDE.md— Claude Code context (if present)
HTTP Daemon + Stdio Proxy
This server owns persistent state (Calibre metadata.db, LanceDB RAG index, book FTS cache). To prevent database contention when multiple stdio clients connect concurrently, use the HTTP Daemon + Stdio Proxy pattern:
- Start the HTTP daemon (owns DB):
python -m calibre_mcp(HTTP mode) - Stdio clients (Claude Desktop, opencode, Cursor) probe
http://127.0.0.1:10720/mcpon startup - If the daemon is alive, the stdio instance becomes a lightweight proxy via
create_proxy()— zero DB initialization - If unreachable, starts normally as a standalone server
Env var to override the probe URL: CALIBREOPS_API_URL (default: http://127.0.0.1:10720/mcp)
Reference implementation: src/calibre_mcp/server.py
Install docs: follow mcp-central-docs/standards/AGENT_INSTALL_REFERENCE.md
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.
- 2mo ago First seen · 34 lines · 431 tokens per session scan A 0e1c2ccc7676
calibremcp AGENTS.md is an instructions file published in the GitHub repository sandraschi/calibremcp (52 stars, last pushed today), licensed MIT. It adds 431 tokens to every session, about $0.0017 per session on Opus 5.5. 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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