matrix_federation_health

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/matrix-federation-health.md

WHAT IT DOES

What matrix_federation_health does on Crow

AI agents call matrix_federation_health 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 matrix_federation_health is rated Low

This tool retrieves diagnostic information about federation health from a public testing service. It performs a read-only query against an external API (federationtester.matrix.org) to verify configuration status. No data is modified, deleted, or created; no arbitrary code is executed; and no financial operations occur.

From the tool's definition Tool queries an external service (Matrix Federation Tester) to check server federation status. Description uses verbs 'Ask' and 'Exercises' in the context of testing/checking, with no modification, creation, deletion, or execution of arbitrary code.

Attacks that exploit this kind of access

RECOMMENDED RULE

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

matrix_federation_health Allowed

matrix_federation_health 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": {
    "matrix_federation_health": {}
  }
}

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 matrix_federation_health call is checked against it from then on.

FAQ

Questions about matrix_federation_health

What does the matrix_federation_health tool do? +

Ask the public Matrix Federation Tester (federationtester.matrix.org) whether this server federates correctly. Exercises both .well-known delegation and :8448 reachability — the canonical test for new Matrix installs. 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_federation_health? +

Register the Crow MCP server in PolicyLayer and add a rule for matrix_federation_health: 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_federation_health? +

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

Can I rate-limit matrix_federation_health? +

Yes. Add a rate_limit block to the matrix_federation_health 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_federation_health completely? +

Set action: deny in the PolicyLayer policy for matrix_federation_health. 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_federation_health? +

matrix_federation_health 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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