The static measure catalog for authoring an alert rule: per source (LOGS, SPANS,
METRICS), the measure functions available, each with its unit and defaultMode
(THRESHOLD or ANOMALY — the mode a new rule on this measure should default to). READ:
available to any authenticated user. This is a static catalog: it reads no telemetry
and returns the same answer for every caller.
Call query's describe_schema first for the tenant's services, groupable fields, and
metric names (pass source=metrics for the metric list) — this tool no longer returns
any of that. Use this tool only to pick a measure once you know the source and, for
METRICS, the metric's kind.
Connector