crow_calibreweb_search

Search the Calibre-Web library by title, author, or keyword. Returns matching books.

SERVERCrow SOURCEkh0pper/crow

Low RISK CLASS

Category Read

Parameters 00 required

Recommended Allowedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/kh0pper-crow/crow-calibreweb-search.md

WHAT IT DOES

What crow_calibreweb_search does on Crow

AI agents call crow_calibreweb_search to retrieve information from Crow without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

RISK

Why crow_calibreweb_search is rated Low

This is a straightforward query operation that retrieves and filters existing data from a book library. It has no side effects, does not execute code, does not modify data, and does not involve financial transactions. The only conceivable risk is information disclosure if the library contains sensitive material, but this is a read-only retrieval tool with minimal blast radius if misused by an AI agent.

From the tool's definition Tool performs a search operation on a Calibre-Web library, returning matching books without modifying or deleting data.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs crow_calibreweb_search safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Crow, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For crow_calibreweb_search, this is the rule to start with:

crow_calibreweb_search Allowed

crow_calibreweb_search is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "crow_calibreweb_search": {}
  }
}

ALLOW ONLY THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Crow, apply this rule, and every crow_calibreweb_search call is checked against it from then on.

FAQ

Questions about crow_calibreweb_search

What does the crow_calibreweb_search tool do? +

Search the Calibre-Web library by title, author, or keyword. Returns matching books. It is categorised as a Read tool in the Crow MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on crow_calibreweb_search? +

Register the Crow MCP server in PolicyLayer and add a rule for crow_calibreweb_search: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches Crow. Nothing to install.

What risk level is crow_calibreweb_search? +

crow_calibreweb_search is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit crow_calibreweb_search? +

Yes. Add a rate_limit block to the crow_calibreweb_search rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.

How do I block crow_calibreweb_search completely? +

Set action: deny in the PolicyLayer policy for crow_calibreweb_search. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.

What MCP server provides crow_calibreweb_search? +

crow_calibreweb_search is provided by the Crow MCP server (kh0pper/crow). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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