netdata_query

Query a single chart

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/netdata-query.md

WHAT IT DOES

What netdata_query does on Crow

AI agents call netdata_query 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 netdata_query is rated Low

The tool retrieves or queries data from a monitoring system (netdata charts) without creating, modifying, or deleting data. It has no side effects and matches the 'Read' category definition: retrieves or queries data with no side effects. The blast radius of misuse is minimal—an attacker could only gain visibility into system metrics/charts already available to the Crow service.

From the tool's definition Tool name and description indicate 'Query a single chart' — a retrieval operation with no mutation or execution of external code.

Attacks that exploit this kind of access

RECOMMENDED RULE

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

netdata_query Allowed

netdata_query 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": {
    "netdata_query": {}
  }
}

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 netdata_query call is checked against it from then on.

FAQ

Questions about netdata_query

What does the netdata_query tool do? +

Query a single chart. 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 netdata_query? +

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

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

Can I rate-limit netdata_query? +

Yes. Add a rate_limit block to the netdata_query 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 netdata_query completely? +

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

netdata_query 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

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