AI agents call list_agent_runtime_versions 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 'list' prefix is a strong indicator of a Read operation that queries and retrieves data about agent runtime versions without causing side effects. Despite the empty description reducing confidence slightly, the verb choice provides sufficient evidence for classification as a benign Read operation with low severity.
From the tool's definition Tool name 'list_agent_runtime_versions' uses the 'list' verb, which indicates retrieval of information rather than modification or execution. The empty description prevents full certainty, but the naming convention is consistent with Read operations.
Documented attack patterns abuse exactly the kind of access list_agent_runtime_versions 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 list_agent_runtime_versions:
{
"version": "1",
"default": "deny",
"tools": {
"list_agent_runtime_versions": {}
}
}list_agent_runtime_versions is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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list_agent_runtime_versions. 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 list_agent_runtime_versions: 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.
list_agent_runtime_versions 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 list_agent_runtime_versions 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 list_agent_runtime_versions. 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.
list_agent_runtime_versions 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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