lemmy_search

Search across communities, posts, comments, users. Rate-limited: 60/hour.

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/lemmy-search.md

WHAT IT DOES

What lemmy_search does on Crow

AI agents call lemmy_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 lemmy_search is rated Low

This tool retrieves and queries data from a Lemmy instance without creating, modifying, deleting, or executing any operations. The rate limiting (60/hour) further indicates it is a safe read operation. The blast radius of misuse is minimal—an agent could only perform excessive searches, which the rate limit mitigates.

From the tool's definition Tool name is 'lemmy_search' and description states it 'Search[es] across communities, posts, comments, users' with rate-limiting. Search is a read-only query operation with no modification or execution of code.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs lemmy_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 lemmy_search, this is the rule to start with:

lemmy_search Allowed

lemmy_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": {
    "lemmy_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 lemmy_search call is checked against it from then on.

FAQ

Questions about lemmy_search

What does the lemmy_search tool do? +

Search across communities, posts, comments, users. Rate-limited: 60/hour. 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 lemmy_search? +

Register the Crow MCP server in PolicyLayer and add a rule for lemmy_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 lemmy_search? +

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

Can I rate-limit lemmy_search? +

Yes. Add a rate_limit block to the lemmy_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 lemmy_search completely? +

Set action: deny in the PolicyLayer policy for lemmy_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 lemmy_search? +

lemmy_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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