fetch_pyroscope_profile

THE RISK

Low Risk

Why fetch_pyroscope_profile needs a policy

This tool retrieves observability data (a Pyroscope profile) from a monitoring system without side effects. Fetching profiling data is a read-only operation that does not modify state, execute arbitrary commands, or affect other systems. The blast radius is limited to potential information disclosure from the profile contents.

From the tool's definition Tool name contains 'fetch' and description states 'Fetch a Pyroscope profile', indicating data retrieval. Returns profile data in DOT format with no mention of modification, deletion, or execution of code.

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

POLICY

How to control fetch_pyroscope_profile

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

policy.json

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

fetch_pyroscope_profile 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 Grafana FastMCP 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 →

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EXPLORE

Related tools and policies

More Grafana FastMCP Server tools

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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 fetch_pyroscope_profile

What does the fetch_pyroscope_profile tool do? +

Fetch a Pyroscope profile in DOT format for a given query. It is categorised as a Read tool in the Grafana FastMCP Server MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on fetch_pyroscope_profile? +

Register the Grafana FastMCP Server MCP server in PolicyLayer and add a rule for fetch_pyroscope_profile: 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 Grafana FastMCP Server. Nothing to install.

What risk level is fetch_pyroscope_profile? +

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

Can I rate-limit fetch_pyroscope_profile? +

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

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

fetch_pyroscope_profile is provided by the Grafana FastMCP Server MCP server (sandersouza/grafanafastmcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Grafana FastMCP Server tool call.

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

CHECK YOUR STACK →