run_template · ComfyUI-APP- MCP: Risk & Policy

WHAT IT DOES

What run_template does on ComfyUI-APP-MCP

AI agents invoke run_template to trigger actions in ComfyUI-APP-MCP. 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 IT NEEDS A POLICY

Why run_template needs a policy

This tool invokes stored ComfyUI workflow templates, which execute image/multimedia generation pipelines with side effects dependent on template parameters and AI-provided arguments. While not destructive in itself, it triggers external computational operations and resource consumption, making it Execute rather than Write.

From the tool's definition Tool name 'run_template' combined with server context describing AI assistants invoking ComfyUI for multimedia generation. The tool executes pre-defined workflows/templates which trigger external multimedia generation operations.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

run_template Rate-limited

run_template 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.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "run_template": {
      "limits": [
        {
          "counter": "run_template_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}

RATE-LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches ComfyUI-APP-MCP, so you can run agents against it safely.

FAQ

Questions about run_template

What does the run_template tool do? +

run_template. It is categorised as a Execute tool in the ComfyUI-APP-MCP MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on run_template? +

Register the ComfyUI-APP- MCP server in PolicyLayer and add a rule for run_template: 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 ComfyUI-APP-MCP. Nothing to install.

What risk level is run_template? +

run_template is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.

Can I rate-limit run_template? +

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

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

run_template is provided by the ComfyUI-APP- MCP server (luo-lotus/comfyui-app-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.