This record as markdown: /tools/kiln/resume-print.md
What resume_print does on Kiln
AI agents invoke resume_print 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 resume_print is rated High
This tool resumes a physical 3D printing operation, causing real-world hardware to begin extruding material and moving axes. It triggers an external operation whose effects depend on the current printer state. Misuse could result in physical damage to the print, wasted materials, or hardware damage if resumed under incorrect conditions.
From the tool's definition 'Resume a paused print job' — triggers an external physical operation on a 3D printer
Attacks that exploit this kind of access
The rule that runs resume_print 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 resume_print, this is the rule to start with:
resume_print 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 resume_print call is checked against it from then on.
Questions about resume_print
Resume a paused print job. 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 resume_print: 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.
resume_print 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 resume_print 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 resume_print. 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.
resume_print 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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