Get Metric IDs for Custom Metricget https://a.klaviyo.com/api/custom-metrics/{id}/relationships/metricsGet all metrics for the given custom metric ID.Rate limits:Burst: 3/sSteady: 60/m Scopes: metrics:readPath ParamsidstringrequiredThe ID of the custom metricHeadersrevisionstringrequiredDefaults to 2026-04-15API endpoint revision (format: YYYY-MM-DD[.suffix])Responses 200Success 4XXClient Error 5XXServer ErrorUpdated about 1 year ago