List all Timestream for InfluxDB DB clusters.
AI agents call ListDbClusters 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.
This tool lists database clusters without modifying, deleting, or executing operations. It is a read-only query operation that returns cluster information. The blast radius if misused is minimal—an agent could discover cluster names and metadata, but cannot alter infrastructure or access data within clusters. Severity is low as it reveals infrastructure details but poses no direct operational risk.
From the tool's definition Tool name 'ListDbClusters' and description 'List all Timestream for InfluxDB DB clusters' indicate a retrieval operation with no side effects.
Attacks that exploit this kind of access
List all Timestream for InfluxDB DB clusters. 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 ListDbClusters: 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.
ListDbClusters 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 ListDbClusters 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 ListDbClusters. 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.
ListDbClusters 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.