describe-events
AI agents call describe-events 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.
The 'describe-events' pattern in AWS APIs consistently retrieves event information without side effects. Although the description is empty, the naming convention strongly indicates a read operation that queries ElastiCache/MemoryDB event data. Severity is low because read operations have no destructive impact, though confidence is moderate due to lack of explicit documentation.
From the tool's definition Tool name 'describe-events' follows AWS API naming conventions for read-only descriptive operations (describe-*). The 'describe' prefix is universally used in AWS for querying and retrieving information without modification.
Attacks that exploit this kind of access
describe-events. 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 describe-events: 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.
describe-events 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 describe-events 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 describe-events. 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.
describe-events 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.