gateway_create · Awslabs Valkey MCP: Risk & Policy

WHAT IT DOES

What gateway_create does on Awslabs Valkey

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

WHY IT NEEDS A POLICY

Why gateway_create needs a policy

The 'create' suffix indicates this tool creates or provisioning a new resource (likely a Redis gateway in the ElastiCache/MemoryDB context). Creation operations are reversible (the resource can be deleted), placing this in the Write category rather than Destructive. Confidence is moderate because the empty description prevents confirmation of exact scope and whether it has side effects beyond resource creation.

From the tool's definition Tool name 'gateway_create' implies creating a gateway resource. The description is empty, providing no additional detail about the operation.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

gateway_create Rate-limited

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

FAQ

Questions about gateway_create

What does the gateway_create tool do? +

gateway_create. It is categorised as a Write tool in the Awslabs Valkey MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on gateway_create? +

Register the Awslabs Valkey MCP server in PolicyLayer and add a rule for gateway_create: 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 gateway_create? +

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

Can I rate-limit gateway_create? +

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

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

gateway_create 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.