{"id":"willdockerhub-metrics-server","name":"metrics-server","af_score":27.5,"security_score":54.5,"reliability_score":37.5,"what_it_does":"metrics-server is a Kubernetes add-on that aggregates resource metrics (CPU/memory) from kubelets and exposes them to the Kubernetes Metrics API (used by Horizontal Pod Autoscaler and kubectl top).","best_when":"You need cluster resource metrics inside Kubernetes and want the standard Kubernetes metrics pipeline.","avoid_when":"You need a full observability stack with retention, alerting, and query languages rather than the Metrics API.","last_evaluated":"2026-04-04T21:27:03.070526+00:00","has_mcp":false,"has_api":false,"auth_methods":["Uses Kubernetes API auth (service accounts/RBAC) to read metrics endpoints; kubelet auth/TLS between metrics-server and kubelets depends on cluster configuration."],"has_free_tier":false,"known_gotchas":["As a Kubernetes add-on, agent interactions depend on cluster setup (RBAC, TLS to kubelets, APIService registration).","Metrics availability can lag during kubelet/cluster transitions; agents may see empty/temporary metrics if queried too early.","Configuration flags and permissions (service account, aggregation permissions) often require manual alignment to the cluster environment."],"error_quality":0.0}