set_high_tension · mcpXL30 MCP: Risk & Policy

WHAT IT DOES

What set_high_tension does on mcpXL30

AI agents invoke set_high_tension to trigger actions in mcpXL30. 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 set_high_tension needs a policy

Setting the high tension (accelerating voltage) on an electron microscope is an external physical operation that directly controls hardware — it adjusts the electron beam voltage, which can damage samples, affect beam optics, or pose safety risks if misused. It triggers a real-world effect on physical equipment.

From the tool's definition Set the XL30 high tension in kilovolts (0 disables)

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

set_high_tension Rate-limited

set_high_tension 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": {
    "set_high_tension": {
      "limits": [
        {
          "counter": "set_high_tension_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 mcpXL30, so you can run agents against it safely.

FAQ

Questions about set_high_tension

What does the set_high_tension tool do? +

Set the XL30 high tension in kilovolts (0 disables). It is categorised as a Execute tool in the mcpXL30 MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on set_high_tension? +

Register the mcpXL30 MCP server in PolicyLayer and add a rule for set_high_tension: 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 mcpXL30. Nothing to install.

What risk level is set_high_tension? +

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

Can I rate-limit set_high_tension? +

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

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

set_high_tension is provided by the mcpXL30 MCP server (tspspi/mcpxl30). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.