mastodon_search

Search accounts/hashtags/statuses. Remote queries resolve via WebFinger when resolve=true. 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/mastodon-search.md

WHAT IT DOES

What mastodon_search does on Crow

AI agents call mastodon_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 mastodon_search is rated Low

This tool only retrieves and queries data from a Mastodon-compatible server without creating, modifying, or deleting content. WebFinger resolution is a standard federated protocol for discovering public information. The rate limit and search scope indicate a passive read operation with no side effects or destructive capabilities.

From the tool's definition Tool description states it 'Search accounts/hashtags/statuses' with 'Remote queries resolve via WebFinger'. No mention of modification, deletion, code execution, or financial operations. Rate-limiting (60/hour) is consistent with a read-only search operation.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs mastodon_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 mastodon_search, this is the rule to start with:

mastodon_search Allowed

mastodon_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": {
    "mastodon_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 mastodon_search call is checked against it from then on.

FAQ

Questions about mastodon_search

What does the mastodon_search tool do? +

Search accounts/hashtags/statuses. Remote queries resolve via WebFinger when resolve=true. 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 mastodon_search? +

Register the Crow MCP server in PolicyLayer and add a rule for mastodon_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 mastodon_search? +

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

Can I rate-limit mastodon_search? +

Yes. Add a rate_limit block to the mastodon_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 mastodon_search completely? +

Set action: deny in the PolicyLayer policy for mastodon_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 mastodon_search? +

mastodon_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.

KEEP EXPLORING

More on Crow, and thousands of servers like it.

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Across the catalogue

search_torrents on M-Team MCP Server →aiva_search_customers on AIVA MCP Server →search_channel on YouTube MCP Server →hybrid_search on Azure AI Agent Service + Azure AI Search MCP Server → The MCP Attack Database →

Guides

Roll out MCP under one policy →Data exfiltration →MCP token cost →