This record as markdown: /tools/kiln/acquire-printer-lock.md
What acquire_printer_lock does on Kiln
AI agents invoke acquire_printer_lock 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 acquire_printer_lock is rated High
Based on the name alone, 'acquire_printer_lock' likely triggers an external operation on a physical 3D printer — locking or reserving the printer resource for exclusive access. This implies an Execute-level action that affects physical hardware operations. However, the description is empty, so confidence is low.
From the tool's definition Tool name: 'acquire_printer_lock'; description is empty and uninformative.
Attacks that exploit this kind of access
The rule that runs acquire_printer_lock safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Kiln, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For acquire_printer_lock, this is the rule to start with:
acquire_printer_lock 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.
The button opens the PolicyLayer dashboard: create your workspace, connect Kiln, apply this rule, and every acquire_printer_lock call is checked against it from then on.
Questions about acquire_printer_lock
acquire_printer_lock is a execute tool on the Kiln MCP server. 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.
Register the Kiln MCP server in PolicyLayer and add a rule for acquire_printer_lock: 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.
acquire_printer_lock is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.
Yes. Add a rate_limit block to the acquire_printer_lock 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.
Set action: deny in the PolicyLayer policy for acquire_printer_lock. 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.
acquire_printer_lock 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.
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