Lists all keyspaces in the Cassandra/Keyspaces database - args: none
AI agents call listKeyspaces to retrieve information from Awslabs Valkey without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool performs a query/list operation to enumerate keyspaces, which is a non-destructive retrieval of information. It has no ability to modify, delete, or execute operations, and poses minimal risk if misused by an agent—the worst outcome is information disclosure about the database schema.
From the tool's definition Tool name 'listKeyspaces' and description 'Lists all keyspaces in the Cassandra/Keyspaces database' indicate a read operation that retrieves metadata about database structure 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 Awslabs Valkey MCP Server, which means it retrieves data without modifying state.
Register the Awslabs Valkey 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 Awslabs Valkey. 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 Awslabs Valkey MCP server (awslabs.valkey-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.