create_image · LiblibAI Picture Generator MCP: Risk & Policy

WHAT IT DOES

What create_image does on LiblibAI Picture Generator

AI agents use create_image to create or update resources in LiblibAI Picture Generator — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your LiblibAI Picture Generator environment.

WHY IT NEEDS A POLICY

Why create_image needs a policy

This tool creates new image artifacts through an AI generation service. While not destructive or financial in direct terms, it consumes account credits (reversible but with cost implications) and generates persistent digital content. The primary action is creation (Write category), not merely retrieval.

From the tool's definition Tool name 'create_image' and description '生成AI图片' (generate AI image) indicates creation of new digital content.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

create_image Rate-limited

create_image stays usable, but capped — an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "create_image": {
      "limits": [
        {
          "counter": "create_image_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL →

Instant setup, no code required.

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

FAQ

Questions about create_image

What does the create_image tool do? +

生成AI图片. It is categorised as a Write tool in the LiblibAI Picture Generator MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on create_image? +

Register the LiblibAI Picture Generator MCP server in PolicyLayer and add a rule for create_image: 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 LiblibAI Picture Generator. Nothing to install.

What risk level is create_image? +

create_image is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit create_image? +

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

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

create_image is provided by the LiblibAI Picture Generator MCP server (nathansnmmer/picture). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.