create_access_key · Awslabs Valkey MCP: Risk & Policy

WHAT IT DOES

What create_access_key does on Awslabs Valkey

AI agents use create_access_key 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 create_access_key needs a policy

Creating access keys is a reversible Write operation—new credentials can be generated and old ones can be deactivated or deleted. However, the severity is elevated to 'high' because misuse could grant an AI agent the ability to create credentials for privilege escalation or unauthorized access persistence.

From the tool's definition Tool named 'create_access_key' with no description provided. Based on the name alone, this creates AWS access credentials, which are security artifacts that enable authentication and authorization.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

create_access_key Rate-limited

create_access_key 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_access_key": {
      "limits": [
        {
          "counter": "create_access_key_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 create_access_key

What does the create_access_key tool do? +

create_access_key. 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 create_access_key? +

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

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

Can I rate-limit create_access_key? +

Yes. Add a rate_limit block to the create_access_key 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_access_key completely? +

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

create_access_key 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.