gateway_resource_policy_put · Awslabs Valkey MCP

WHAT IT DOES

What gateway_resource_policy_put does on Awslabs Valkey

AI agents use gateway_resource_policy_put 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_resource_policy_put needs a policy

The 'put' verb indicates this tool creates or modifies data (specifically IAM/resource policies), classifying it as Write. The severity is high because misconfiguring gateway resource policies can grant or revoke critical access to AWS services, potentially affecting multiple systems and users.

From the tool's definition Tool name 'gateway_resource_policy_put' indicates a PUT operation on gateway resource policies, which modifies access control configurations.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

gateway_resource_policy_put Rate-limited

gateway_resource_policy_put 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_resource_policy_put": {
      "limits": [
        {
          "counter": "gateway_resource_policy_put_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_resource_policy_put

What does the gateway_resource_policy_put tool do? +

gateway_resource_policy_put. 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_resource_policy_put? +

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

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

Can I rate-limit gateway_resource_policy_put? +

Yes. Add a rate_limit block to the gateway_resource_policy_put 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_resource_policy_put completely? +

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

gateway_resource_policy_put 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.