ListAHOWorkflowVersions
AI agents call ListAHOWorkflowVersions 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.
The 'List' operation retrieves or queries existing workflow versions, producing no side effects and matching the Read category definition. The tool does not create, modify, execute, or delete resources. Despite the empty description reducing confidence slightly, the clear read-only semantics of 'List' justify low severity and high confidence classification.
From the tool's definition Tool name 'ListAHOWorkflowVersions' contains 'List', a read-only verb indicating data retrieval without modification or execution. The empty description limits full certainty but the naming convention strongly suggests querying/enumerating workflow versions.
Attacks that exploit this kind of access
ListAHOWorkflowVersions. 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 ListAHOWorkflowVersions: 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.
ListAHOWorkflowVersions 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 ListAHOWorkflowVersions 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 ListAHOWorkflowVersions. 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.
ListAHOWorkflowVersions 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.