get_execution_plan

THE RISK

Low Risk

Why get_execution_plan needs a policy

The naming convention 'get_' strongly indicates a retrieval operation with no side effects. Even if this retrieves an execution plan from Prometheus or AWS, it appears to be informational rather than executing queries or modifying state. The empty description reduces confidence slightly, but the tool name itself is indicative of read-only behavior.

From the tool's definition Tool name 'get_execution_plan' suggests retrieval of an execution plan (a query plan or preview), which is read-only by nature. No description provided to confirm exact behavior.

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

POLICY

How to control get_execution_plan

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

policy.json

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

get_execution_plan 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 Prometheus MCP Server — 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

Related tools and policies

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All 805 Prometheus MCP Server tools →

Read tools on other servers

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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 get_execution_plan

What does the get_execution_plan tool do? +

get_execution_plan. It is categorised as a Read tool in the Prometheus MCP Server MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on get_execution_plan? +

Register the Prometheus MCP Server MCP server in PolicyLayer and add a rule for get_execution_plan: 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 Prometheus MCP Server. Nothing to install.

What risk level is get_execution_plan? +

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

Can I rate-limit get_execution_plan? +

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

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

get_execution_plan is provided by the Prometheus MCP Server MCP server (awslabs.prometheus-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Prometheus MCP Server tool call.

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

CHECK YOUR STACK →