list_event_data_stores
AI agents call list_event_data_stores to retrieve information from AWS IoT SiteWise MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
List operations retrieve existing data without creating, modifying, deleting, or executing actions. The 'list_' prefix is a standard naming convention for Read operations that enumerate resources. Even with an empty description, the function name itself strongly indicates this is a data retrieval operation with no destructive or side-effect causing capabilities.
From the tool's definition Tool name 'list_event_data_stores' indicates a listing/enumeration operation that retrieves information about event data stores without modifying them.
Attacks that exploit this kind of access
list_event_data_stores. It is categorised as a Read tool in the AWS IoT SiteWise MCP Server MCP Server, which means it retrieves data without modifying state.
Register the AWS IoT SiteWise MCP Server MCP server in PolicyLayer and add a rule for list_event_data_stores: 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 AWS IoT SiteWise MCP Server. Nothing to install.
list_event_data_stores 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_event_data_stores 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_event_data_stores. 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_event_data_stores is provided by the AWS IoT SiteWise MCP Server MCP server (awslabs.aws-iot-sitewise-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.