mastodon_status

THE RISK

Low Risk

Why mastodon_status needs a policy

This tool performs read-only queries of public and operational instance information from a Mastodon server. It has no capability to modify, delete, or execute operations—only to retrieve and report status metrics. The blast radius is minimal as misuse would only expose publicly or administratively available information about a Mastodon instance.

From the tool's definition Tool retrieves Mastodon instance health metrics including 'reachability, version, user/post/domain stats, admin account, federation peer count, media cache retention setting' - all informational queries with no modification or deletion of data.

Risk signalsAdmin/system-level operation

Documented attack patterns abuse exactly the kind of access mastodon_status gives an agent:

POLICY

How to control mastodon_status

PolicyLayer is an MCP gateway — it sits between your AI agents and Crow, and nothing reaches the server without passing your rules. This is the rule we recommend for mastodon_status:

policy.json

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

mastodon_status is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.

Create a free account and register Crow — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

CAP THIS TOOL →

Free to start. No card required.

EXPLORE

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Go deeper

The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Data exfiltration → How read access becomes an exfiltration channel when chained with untrusted content.
MCP token cost → What connecting this server costs in context-window tokens on every request.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about mastodon_status

What does the mastodon_status tool do? +

Report Mastodon instance health: reachability, version, user/post/domain stats, admin account, federation peer count, media cache retention setting. 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_status? +

Register the Crow MCP server in PolicyLayer and add a rule for mastodon_status: 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_status? +

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

Can I rate-limit mastodon_status? +

Yes. Add a rate_limit block to the mastodon_status 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_status completely? +

Set action: deny in the PolicyLayer policy for mastodon_status. 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_status? +

mastodon_status 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.

Enforce policy on every Crow tool call.

Start from Crow, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

CHECK YOUR STACK →