fleet_regression_sweep · Grafana MCP Server MCP

WHAT IT DOES

What fleet_regression_sweep does on Grafana MCP Server

AI agents invoke fleet_regression_sweep to trigger actions in Grafana MCP Server. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call — builds kicked off, notifications sent, workflows started.

WHY IT NEEDS A POLICY

Why fleet_regression_sweep needs a policy

This tool executes a regression test sweep—a computational operation with external side effects. It runs analysis operations across all discovered sensors for a given build, which qualifies as Execute (triggers external operations whose effects depend on arguments).

From the tool's definition Tool name 'fleet_regression_sweep' and description 'Run a regression sweep across all discovered sensors against a specific build' indicates execution of automated testing/analysis operations across multiple targets.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

fleet_regression_sweep Rate-limited

fleet_regression_sweep stays usable, but rate-capped — a runaway agent can't fire it dozens of times a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "fleet_regression_sweep": {
      "limits": [
        {
          "counter": "fleet_regression_sweep_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}

RATE-LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches Grafana MCP Server, so you can run agents against it safely.

FAQ

Questions about fleet_regression_sweep

What does the fleet_regression_sweep tool do? +

Run a regression sweep across all discovered sensors against a specific build. It is categorised as a Execute tool in the Grafana MCP Server MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on fleet_regression_sweep? +

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

What risk level is fleet_regression_sweep? +

fleet_regression_sweep is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.

Can I rate-limit fleet_regression_sweep? +

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

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

fleet_regression_sweep is provided by the Grafana MCP Server MCP server (quanticsoul4772/grafana-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.