KendraListIndexesTool
AI agents call KendraListIndexesTool 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 are typical Read category tools—they query and retrieve existing data structures (in this case, Kendra indexes) without side effects. The absence of verbs like 'create', 'delete', 'update', or 'execute' supports a Read classification. Severity is low because listing indexes is informational and carries minimal blast radius for misuse.
From the tool's definition Tool name 'KendraListIndexesTool' indicates a listing/enumeration operation. The 'List' prefix is characteristic of read-only operations that retrieve information without modification. No description provided to contradict this inference.
Attacks that exploit this kind of access
KendraListIndexesTool. 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 KendraListIndexesTool: 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.
KendraListIndexesTool 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 KendraListIndexesTool 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 KendraListIndexesTool. 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.
KendraListIndexesTool 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.