prometheus_query

Run an instant Prometheus query.

SERVERMcp Control Plane SOURCEalbertik322-sudo/mcp-control-plane

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/mcp-control-plane/prometheus-query.md

WHAT IT DOES

What prometheus_query does on Mcp Control Plane

AI agents call prometheus_query to retrieve information from Mcp Control Plane without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

RISK

Why prometheus_query is rated Low

Prometheus queries retrieve time-series metrics and observability data without side effects. Even though 'Execute' might seem applicable because a query is technically 'executed,' the tool's purpose is data retrieval, not arbitrary code execution or system operation invocation. The blast radius is limited to information disclosure of metrics the requester is already authorized to access.

From the tool's definition Tool name 'prometheus_query' and description 'Run an instant Prometheus query' indicate retrieval of metrics data from Prometheus. Query execution against a metrics database is a read-only operation with no data modification or deletion.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs prometheus_query safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Mcp Control Plane, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For prometheus_query, this is the rule to start with:

prometheus_query Allowed

prometheus_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": {
    "prometheus_query": {}
  }
}

ALLOW ONLY THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Mcp Control Plane, apply this rule, and every prometheus_query call is checked against it from then on.

FAQ

Questions about prometheus_query

What does the prometheus_query tool do? +

Run an instant Prometheus query. It is categorised as a Read tool in the Mcp Control Plane MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on prometheus_query? +

Register the Mcp Control Plane MCP server in PolicyLayer and add a rule for prometheus_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 Mcp Control Plane. Nothing to install.

What risk level is prometheus_query? +

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

Can I rate-limit prometheus_query? +

Yes. Add a rate_limit block to the prometheus_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 prometheus_query completely? +

Set action: deny in the PolicyLayer policy for prometheus_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 prometheus_query? +

prometheus_query is provided by the Mcp Control Plane MCP server (albertik322-sudo/mcp-control-plane). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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