Lists all keyspaces in the Cassandra/Keyspaces database - args: none
AI agents call listKeyspaces 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 performs a read-only query operation that retrieves metadata about existing keyspaces. It has no capability to modify, delete, execute code, or affect data. The blast radius is minimal—exposure would only allow an agent to discover database schema information. Low severity is appropriate for informational metadata retrieval.
From the tool's definition Tool name is 'listKeyspaces' and description states it 'Lists all keyspaces in the Cassandra/Keyspaces database' with no arguments. The verb 'Lists' indicates a retrieval operation with no side effects.
Attacks that exploit this kind of access
Lists all keyspaces in the Cassandra/Keyspaces database - args: none. 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 listKeyspaces: 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.
listKeyspaces 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 listKeyspaces 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 listKeyspaces. 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.
listKeyspaces 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.