preflight_check_tool
AI agents call preflight_check_tool to retrieve information from Mcp Print without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
Preflight checks are standard pre-production validation steps that query and report on file properties and potential issues without modifying data or triggering production. The low severity reflects that misuse would only provide false validation results, not cause direct harm. Confidence is high based on industry standard terminology, though the empty description prevents full certainty.
From the tool's definition Tool name 'preflight_check_tool' indicates validation/inspection of print files. Description is empty, but preflight in print production universally means checking files for errors (resolution, color mode, bleed, fonts, etc.) before production—a read-only…
Documented attack patterns abuse exactly the kind of access preflight_check_tool gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Mcp Print, and nothing reaches the server without passing your rules. This is the rule we recommend for preflight_check_tool:
{
"version": "1",
"default": "deny",
"tools": {
"preflight_check_tool": {}
}
}preflight_check_tool is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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preflight_check_tool. It is categorised as a Read tool in the Mcp Print MCP Server, which means it retrieves data without modifying state.
Register the Mcp Print MCP server in PolicyLayer and add a rule for preflight_check_tool: 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 Mcp Print. Nothing to install.
preflight_check_tool is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the preflight_check_tool 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 preflight_check_tool. 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.
preflight_check_tool is provided by the Mcp Print MCP server (kcgdz/mcp-print). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Mcp Print, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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12 Mcp Print tools catalogued and risk-classified — across an index of 43,000+ MCP servers.