get_promql_label_values
AI agents call get_promql_label_values 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 tool name strongly indicates a read operation to fetch or list label values from a metric system (PromeQL is used for querying time-series data in Prometheus). No description is provided to suggest side effects, modification, execution, or destructive capabilities. The absence of any descriptive details justifies lower-than-maximum confidence despite the fairly clear semantic intent of the name.
From the tool's definition Tool name 'get_promql_label_values' suggests querying label values from Prometheus Query Language (PromeQL), which is a read operation that retrieves metric metadata. However, the description is empty, significantly limiting confidence.
Attacks that exploit this kind of access
get_promql_label_values. 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 get_promql_label_values: 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.
get_promql_label_values 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 get_promql_label_values 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 get_promql_label_values. 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.
get_promql_label_values 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.