describe-log-streams
AI agents call describe-log-streams 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 appears to query and return information about log streams (likely CloudWatch Logs) based on the naming pattern. It has no side effects—it retrieves descriptive metadata. Severity is low because it accesses log metadata which may contain some operational details but typically does not directly expose sensitive user data.
From the tool's definition Tool name 'describe-log-streams' indicates retrieval/query operation on log streams metadata. The 'describe-' prefix is standard AWS CLI convention for read-only operations that retrieve resource information without modification.
Attacks that exploit this kind of access
describe-log-streams. 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-log-streams: 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-log-streams 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-log-streams 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-log-streams. 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-log-streams 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.