compute_invariant_mass · CERN ROOT MCP Server MCP

WHAT IT DOES

What compute_invariant_mass does on CERN ROOT MCP Server

AI agents invoke compute_invariant_mass to trigger actions in CERN ROOT 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 compute_invariant_mass needs a policy

This tool executes a physics computation (invariant mass calculation from 4-momentum vectors) against data in CERN ROOT files. It is not a simple read/query but involves processing and deriving results. No data is written or deleted, but it triggers an external computation operation. Misuse could result in incorrect physics analysis, but blast radius is limited to computational resources and analysis integrity.

From the tool's definition 'Compute invariant mass from 4-vectors' — performs a computation/calculation operation on data from ROOT files

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

compute_invariant_mass Rate-limited

compute_invariant_mass 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": {
    "compute_invariant_mass": {
      "limits": [
        {
          "counter": "compute_invariant_mass_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 CERN ROOT MCP Server, so you can run agents against it safely.

FAQ

Questions about compute_invariant_mass

What does the compute_invariant_mass tool do? +

Compute invariant mass from 4-vectors. It is categorised as a Execute tool in the CERN ROOT 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 compute_invariant_mass? +

Register the CERN ROOT MCP Server MCP server in PolicyLayer and add a rule for compute_invariant_mass: 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 CERN ROOT MCP Server. Nothing to install.

What risk level is compute_invariant_mass? +

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

Can I rate-limit compute_invariant_mass? +

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

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

compute_invariant_mass is provided by the CERN ROOT MCP Server MCP server (mohamedelashri/root-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.