mcp-grafana
In-cluster MCP server for read-only diagnostics of Grafana, Prometheus, Alertmanager, and Loki, enabling metric queries, alert listings, and log queries through Grafana datasource proxies with Kubernetes RBAC authentication.
README
mcp-grafana
In-cluster MCP server for read-only Grafana, Prometheus, Alertmanager, and Loki diagnostics.
Tools
get_grafana_health()- Grafana health/status.list_datasources()- compact datasource inventory.query_prometheus()- instant PromQL through Grafana's Prometheus datasource proxy.query_prometheus_range()- range PromQL through Grafana's Prometheus datasource proxy.list_prometheus_alerts()- Prometheus alert state from the datasource proxy.list_alertmanager_alerts()- Alertmanager alerts from the datasource proxy.query_loki()- Loki range query through the Grafana datasource proxy.
query_prometheus, list_prometheus_alerts, and list_alertmanager_alerts
default to the prometheus and alertmanager datasource UIDs provisioned by
kube-prometheus-stack. query_loki defaults to the loki UID pinned in
romaine-life/osms.
Auth
Inbound transport is gated by kube-rbac-proxy using Kubernetes
TokenReview/SubjectAccessReview, matching the other romaine.life MCP servers.
Outbound calls to Grafana use the calling session pod's auth.romaine.life
service-principal JWT, forwarded by the pod's mcp-auth-proxy sidecar in the
X-Auth-Romaine-Token header. Grafana validates that JWT via its [auth.jwt]
configuration, so this server does not mint or store a separate Grafana service
account token.
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