listDatabases
AI agents call listDatabases to retrieve information from Amazon MQ MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
Despite the empty description, the tool name 'listDatabases' clearly denotes a listing/retrieval action that queries existing databases without creating, modifying, deleting, or executing operations. The blast radius of incorrect usage is minimal—returning database lists causes no harm. Confidence is high based on the standard naming convention and semantic meaning of 'list' operations.
From the tool's definition Tool name 'listDatabases' indicates a query operation that retrieves database information without modification. The prefix 'list' is a strong signal of read-only behavior typical of data retrieval operations.
Attacks that exploit this kind of access
listDatabases. It is categorised as a Read tool in the Amazon MQ MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Amazon MQ MCP Server MCP server in PolicyLayer and add a rule for listDatabases: 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 MQ MCP Server. Nothing to install.
listDatabases 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 listDatabases 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 listDatabases. 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.
listDatabases is provided by the Amazon MQ MCP Server MCP server (awslabs.amazon-mq-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.