pull_engine_image · PineForge-Codegen MCP: Risk & Policy

WHAT IT DOES

What pull_engine_image does on PineForge-Codegen

AI agents invoke pull_engine_image to trigger actions in PineForge-Codegen. 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 pull_engine_image needs a policy

This tool triggers execution of Docker operations that download and load container images. While not destructive in isolation, this is an Execute-class action because it invokes external processes whose effects depend on runtime conditions (network state, image availability, container startup).

From the tool's definition The description states the tool will 'Run' and based on server context, it executes Docker operations to pull and initialize the PineForge engine image, which is an external system operation with side effects (downloading and staging container images).

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

pull_engine_image Rate-limited

pull_engine_image 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": {
    "pull_engine_image": {
      "limits": [
        {
          "counter": "pull_engine_image_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 PineForge-Codegen, so you can run agents against it safely.

FAQ

Questions about pull_engine_image

What does the pull_engine_image tool do? +

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

How do I enforce a policy on pull_engine_image? +

Register the PineForge-Codegen MCP server in PolicyLayer and add a rule for pull_engine_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 PineForge-Codegen. Nothing to install.

What risk level is pull_engine_image? +

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

Can I rate-limit pull_engine_image? +

Yes. Add a rate_limit block to the pull_engine_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 pull_engine_image completely? +

Set action: deny in the PolicyLayer policy for pull_engine_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 pull_engine_image? +

pull_engine_image is provided by the PineForge-Codegen MCP server (oci:ghcr.io/pineforge-4pass/pineforge-codegen-mcp:v0.9.2). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.