AI agents call gateway_list to retrieve information from Awslabs Amazon Sns Sqs without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
The name 'gateway_list' indicates a read operation that retrieves or enumerates gateway resources. Without a description, confidence is moderate. The naming convention (verb 'list') is consistent with data retrieval rather than modification or destructive actions. Even in the context of SNS/SQS provisioning, a 'list' operation typically has no side effects and would be low severity if misused.
From the tool's definition Tool name 'gateway_list' suggests listing/querying gateways; no description provided to confirm action.
Documented attack patterns abuse exactly the kind of access gateway_list gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Awslabs Amazon Sns Sqs, and nothing reaches the server without passing your rules. This is the rule we recommend for gateway_list:
{
"version": "1",
"default": "deny",
"tools": {
"gateway_list": {}
}
}gateway_list is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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gateway_list. It is categorised as a Read tool in the Awslabs Amazon Sns Sqs MCP Server, which means it retrieves data without modifying state.
Register the Awslabs Amazon Sns Sqs MCP server in PolicyLayer and add a rule for gateway_list: 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 Amazon Sns Sqs. Nothing to install.
gateway_list is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the gateway_list 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.
Set action: deny in the PolicyLayer policy for gateway_list. 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.
gateway_list is provided by the Awslabs Amazon Sns Sqs MCP server (awslabs.amazon-sns-sqs-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Awslabs Amazon Sns Sqs, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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