reset_board · Silotek Serial MCP: Risk & Policy

WHAT IT DOES

What reset_board does on Silotek Serial

AI agents invoke reset_board to trigger actions in Silotek Serial. 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 reset_board needs a policy

The name 'reset_board' strongly implies sending a reset signal or command to a connected embedded device, which is an external operation with real physical effects (interrupting firmware execution, restarting the MCU). This falls under Execute as it triggers an external operation. Severity is high because resetting a board in a production or critical embedded system could disrupt operations.

From the tool's definition Tool name 'reset_board' implies triggering a hardware reset on an embedded board (ESP32, STM32); description is empty and uninformative.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

reset_board Rate-limited

reset_board 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": {
    "reset_board": {
      "limits": [
        {
          "counter": "reset_board_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 Silotek Serial, so you can run agents against it safely.

FAQ

Questions about reset_board

What does the reset_board tool do? +

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

How do I enforce a policy on reset_board? +

Register the Silotek Serial MCP server in PolicyLayer and add a rule for reset_board: 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 Silotek Serial. Nothing to install.

What risk level is reset_board? +

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

Can I rate-limit reset_board? +

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

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

reset_board is provided by the Silotek Serial MCP server (jocoin94/silotek-serial-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.