la_trigger · Logic Analyzer MCP: Risk & Policy

WHAT IT DOES

What la_trigger does on Logic Analyzer

AI agents invoke la_trigger to trigger actions in Logic Analyzer. 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 la_trigger needs a policy

Although the description is empty, the context—a logic analyzer control system—indicates this tool triggers hardware capture/measurement operations. This is an Execute category action because it invokes external hardware behavior contingent on arguments. It's not Destructive (capture doesn't permanently delete data), not Write alone (it's not just storing data), and not Read (it actively commands hardware).

From the tool's definition Tool `la_trigger` belongs to a USB logic analyzer control server (FastMCP-driven sigrok integration) with sibling tools for capture, configuration, decoding, and device management.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

la_trigger Rate-limited

la_trigger 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": {
    "la_trigger": {
      "limits": [
        {
          "counter": "la_trigger_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 Logic Analyzer, so you can run agents against it safely.

FAQ

Questions about la_trigger

What does the la_trigger tool do? +

la_trigger. It is categorised as a Execute tool in the Logic Analyzer MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on la_trigger? +

Register the Logic Analyzer MCP server in PolicyLayer and add a rule for la_trigger: 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 Logic Analyzer. Nothing to install.

What risk level is la_trigger? +

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

Can I rate-limit la_trigger? +

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

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

la_trigger is provided by the Logic Analyzer MCP server (sandraschi/logic-analyzer-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.