start_print_recovery · Kiln MCP: Risk & Policy

WHAT IT DOES

What start_print_recovery does on Kiln

AI agents invoke start_print_recovery to trigger actions in Kiln. 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 start_print_recovery needs a policy

This tool triggers execution of a recovery plan on 3D printer hardware, which constitutes an Execute action. Recovery plans can involve thermal adjustments, mechanical movements, or resumption of partially-failed prints, all of which are irreversible physical operations. The high severity reflects potential for damage to in-progress prints, hardware stress, or material waste if a malformed recovery plan is executed.

From the tool's definition Tool name 'start_print_recovery' and description 'Begin executing a recovery plan' indicate initiation of automated operations on 3D printer hardware.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

start_print_recovery Rate-limited

start_print_recovery 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": {
    "start_print_recovery": {
      "limits": [
        {
          "counter": "start_print_recovery_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 Kiln, so you can run agents against it safely.

FAQ

Questions about start_print_recovery

What does the start_print_recovery tool do? +

Begin executing a recovery plan. It is categorised as a Execute tool in the Kiln MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on start_print_recovery? +

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

What risk level is start_print_recovery? +

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

Can I rate-limit start_print_recovery? +

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

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

start_print_recovery is provided by the Kiln MCP server (codeofaxel/Kiln). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.