hand_back_printer

A read tool on the Kiln MCP server.

SERVERKiln SOURCEcodeofaxel/Kiln

Low RISK CLASS

Category Read

Parameters 00 required

Recommended Allowedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/kiln/hand-back-printer.md

WHAT IT DOES

What hand_back_printer does on Kiln

AI agents call hand_back_printer to retrieve information from Kiln without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

RISK

Why hand_back_printer is rated Low

Even though hand_back_printer only reads data, uncontrolled read access leaks sensitive information and racks up API costs: an agent caught in a retry loop can make thousands of calls a minute without anyone noticing.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs hand_back_printer 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 hand_back_printer, this is the rule to start with:

hand_back_printer Allowed

hand_back_printer is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "hand_back_printer": {}
  }
}

ALLOW ONLY THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Kiln, apply this rule, and every hand_back_printer call is checked against it from then on.

FAQ

Questions about hand_back_printer

What does the hand_back_printer tool do? +

hand_back_printer is a read tool on the Kiln MCP server. It is categorised as a Read tool in the Kiln MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on hand_back_printer? +

Register the Kiln MCP server in PolicyLayer and add a rule for hand_back_printer: 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 hand_back_printer? +

hand_back_printer is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit hand_back_printer? +

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

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

hand_back_printer 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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