KendraQueryTool
AI agents call KendraQueryTool to retrieve information from Amazon ElastiCache Memcached MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
Query tools are typically Read operations that retrieve data without side effects. However, confidence is moderately reduced because the description is empty, leaving ambiguity about exact permissions and scope. If this tool can query sensitive indexed documents or business data at scale, the blast radius if misused by an AI agent could expose confidential information, warranting medium severity.
From the tool's definition Tool name 'KendraQueryTool' suggests a query operation against Amazon Kendra (AWS search service). The name pattern 'Query' indicates data retrieval rather than modification or deletion.
Attacks that exploit this kind of access
KendraQueryTool. It is categorised as a Read tool in the Amazon ElastiCache Memcached MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Amazon ElastiCache Memcached MCP Server MCP server in PolicyLayer and add a rule for KendraQueryTool: 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 Amazon ElastiCache Memcached MCP Server. Nothing to install.
KendraQueryTool 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 KendraQueryTool 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 KendraQueryTool. 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.
KendraQueryTool is provided by the Amazon ElastiCache Memcached MCP Server MCP server (awslabs.memcached-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.