finch_push_image · Awslabs Valkey MCP: Risk & Policy

WHAT IT DOES

What finch_push_image does on Awslabs Valkey

AI agents invoke finch_push_image to trigger actions in Awslabs Valkey. 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 finch_push_image needs a policy

The description is empty, lowering confidence. Based on the name, 'finch' is AWS's open-source container development tool, and 'push_image' implies pushing a container image to a remote registry — an external operation with side effects (Write/Execute). Pushing an image to a registry is an irreversible publish action that could expose sensitive artifacts, so Execute at high severity is most appropriate.

From the tool's definition Tool name 'finch_push_image' — 'finch' is a container CLI tool; 'push_image' suggests pushing a container image to a registry.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

finch_push_image Rate-limited

finch_push_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": {
    "finch_push_image": {
      "limits": [
        {
          "counter": "finch_push_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 Awslabs Valkey, so you can run agents against it safely.

FAQ

Questions about finch_push_image

What does the finch_push_image tool do? +

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

How do I enforce a policy on finch_push_image? +

Register the Awslabs Valkey MCP server in PolicyLayer and add a rule for finch_push_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 Awslabs Valkey. Nothing to install.

What risk level is finch_push_image? +

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

Can I rate-limit finch_push_image? +

Yes. Add a rate_limit block to the finch_push_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 finch_push_image completely? +

Set action: deny in the PolicyLayer policy for finch_push_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 finch_push_image? +

finch_push_image is provided by the Awslabs Valkey MCP server (awslabs.valkey-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.