printer_set_speed

THE RISK

Medium Risk

Why printer_set_speed needs a policy

This tool modifies a printer's operational parameter (print speed) during a print job. It is reversible (speed can be changed back), so it falls under Write rather than Destructive. Misuse could cause print failures or hardware stress (e.g., 'ludicrous' speed on a delicate print), giving it medium severity.

From the tool's definition Set print speed. Use a named profile (silent/standard/sport/ludicrous) or a percentage (1-166).

Documented attack patterns abuse exactly the kind of access printer_set_speed gives an agent:

POLICY

How to control printer_set_speed

PolicyLayer is an MCP gateway — it sits between your AI agents and Bambu Lab MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for printer_set_speed:

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "printer_set_speed": {
      "limits": [
        {
          "counter": "printer_set_speed_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

printer_set_speed stays usable, but capped — an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.

Create a free account and register Bambu Lab MCP Server — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

LIMIT THIS TOOL →

Free to start. No card required.

EXPLORE

Related tools and policies

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Go deeper

The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Argument validation → Checking tool call arguments against schema and policy before they run.
Scoped token → Per-person credentials that grant a defined subset of servers and tools.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about printer_set_speed

What does the printer_set_speed tool do? +

Set print speed. Use a named profile (silent/standard/sport/ludicrous) or a percentage (1-166). It is categorised as a Write tool in the Bambu Lab MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on printer_set_speed? +

Register the Bambu Lab MCP Server MCP server in PolicyLayer and add a rule for printer_set_speed: 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 Bambu Lab MCP Server. Nothing to install.

What risk level is printer_set_speed? +

printer_set_speed is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit printer_set_speed? +

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

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

printer_set_speed is provided by the Bambu Lab MCP Server MCP server (schwarztim/bambu-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Bambu Lab MCP Server tool call.

Start from Bambu Lab MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

CHECK YOUR STACK →