generate_image · Run402 MCP: Risk & Policy

WHAT IT DOES

What generate_image does on Run402

AI agents use generate_image to commit financial operations through Run402 — usually the final step of a payment, billing, or trading workflow. A call moves real money.

WHY IT NEEDS A POLICY

Why generate_image needs a policy

Each invocation of this tool incurs a real financial cost ($0.03 USDC) paid via the x402 payment protocol. While the primary action is image generation, the financial transaction is an inherent and unavoidable side effect, making Financial the most severe applicable category. Misuse by an AI agent could result in repeated charges accumulating significant costs.

From the tool's definition Costs $0.03 USDC via x402

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

generate_image Approval-gated

Any call to generate_image is blocked until a human approves it. The rest of the server keeps working.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "generate_image": {
      "deny_if": [
        {
          "conditions": [],
          "on_deny": "Requires human approval."
        }
      ]
    }
  }
}

GATE THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches Run402, so you can run agents against it safely.

FAQ

Questions about generate_image

What does the generate_image tool do? +

Generate a PNG image from a text prompt. Costs $0.03 USDC via x402. Aspect ratios: square (1:1), landscape (16:9), portrait (9:16). It is categorised as a Financial tool in the Run402 MCP Server, which means it involves financial transactions. Block by default and require explicit approval.

How do I enforce a policy on generate_image? +

Register the Run402 MCP server in PolicyLayer and add a rule for generate_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 Run402. Nothing to install.

What risk level is generate_image? +

generate_image is a Financial tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.

Can I rate-limit generate_image? +

Yes. Add a rate_limit block to the generate_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 generate_image completely? +

Set action: deny in the PolicyLayer policy for generate_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 generate_image? +

generate_image is provided by the Run402 MCP server (kychee-com/run402). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.