matrix_status

Report Dendrite status: reachability, server version, whoami, federation mode (disabled/enabled), and the canonical Matrix federation tester verdict for this server.

ServerCrow
CategoryRead

How to control matrix_status ↓

WHAT IT DOES

What matrix_status does on Crow

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

THE RISK

Low Risk

Why matrix_status needs a policy

This tool retrieves and reports status information about a Matrix (Dendrite) server. It performs queries and returns diagnostic data without modifying, executing, or destructively altering any system state. No code execution, data modification, or irreversible operations are involved. The sole purpose is information gathering, fitting the Read category.

From the tool's definition Tool description specifies reporting/querying status information: 'Report Dendrite status: reachability, server version, whoami, federation mode, and the canonical Matrix federation tester verdict'.

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

POLICY

How to control matrix_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 matrix_status:

policy.json

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

matrix_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 matrix_status

What does the matrix_status tool do? +

Report Dendrite status: reachability, server version, whoami, federation mode (disabled/enabled), and the canonical Matrix federation tester verdict for this server. 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 matrix_status? +

Register the Crow MCP server in PolicyLayer and add a rule for matrix_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 matrix_status? +

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

Can I rate-limit matrix_status? +

Yes. Add a rate_limit block to the matrix_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 matrix_status completely? +

Set action: deny in the PolicyLayer policy for matrix_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 matrix_status? +

matrix_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.

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576 Crow tools catalogued and risk-classified — across an index of 43,000+ MCP servers.