comfy_list_workflows

THE RISK

Low Risk

Why comfy_list_workflows needs a policy

This tool retrieves and filters existing workflow metadata without creating, modifying, deleting, or executing anything. It is a straightforward read operation with minimal risk — the worst outcome is exposure of workflow names or metadata, which is non-destructive and typically low-sensitivity in a local development environment.

From the tool's definition Tool name 'comfy_list_workflows' and description explicitly state it 'List all saved workflows' with support for 'filtering by name, description, or tags' — purely a query/retrieval operation with no side effects.

Documented attack patterns abuse exactly the kind of access comfy_list_workflows gives an agent:

POLICY

How to control comfy_list_workflows

PolicyLayer is an MCP gateway — it sits between your AI agents and ComfyUI MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for comfy_list_workflows:

policy.json

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

comfy_list_workflows is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.

Create a free account and register ComfyUI MCP Server — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

CAP THIS TOOL →

Free to start. No card required.

EXPLORE

Related tools and policies

More ComfyUI MCP Server tools

Destructive comfy_clear_queue Clear all pending items from the queue (does not affect currently running generation). Req Destructive comfy_delete_workflow Delete a saved workflow from the MCP library. Requires confirmation for safety. Execute comfy_cancel_generation Cancel a specific generation or interrupt the currently executing generation. Can optional Execute comfy_wait_for_completion Block until a generation completes or fails. Returns final outputs with image paths. Usefu Execute comfy_generate_simple Quick image generation using pre-configured workflow templates (flux_txt2img, sd15_txt2img Execute comfy_submit_workflow Submit a complete workflow JSON to ComfyUI for execution. Supports parameter overrides for Write comfy_save_workflow Save a workflow JSON to the MCP library for later reuse. Includes metadata like descriptio Write comfy_upload_image Upload an image to ComfyUI\

All 14 ComfyUI MCP Server tools →

Read tools on other servers

M-Team MCP Server get_torrent_detail YouTube MCP Server search_channel Android Forensics ADB MCP Server parse_browser_history 0xarchive web3_challenge

Go deeper

The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Data exfiltration → How read access becomes an exfiltration channel when chained with untrusted content.
MCP token cost → What connecting this server costs in context-window tokens on every request.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about comfy_list_workflows

What does the comfy_list_workflows tool do? +

List all saved workflows in the MCP library. Supports filtering by name, description, or tags. It is categorised as a Read tool in the ComfyUI MCP Server MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on comfy_list_workflows? +

Register the ComfyUI MCP Server MCP server in PolicyLayer and add a rule for comfy_list_workflows: 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 MCP Server. Nothing to install.

What risk level is comfy_list_workflows? +

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

Can I rate-limit comfy_list_workflows? +

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

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

comfy_list_workflows is provided by the ComfyUI MCP Server MCP server (nikolaibibo/claude-comfyui-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every ComfyUI MCP Server tool call.

Start from ComfyUI MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

CHECK YOUR STACK →