# PromQL Metrics

> Get detailed insights into your Temporal Cloud Namespace metrics using your own observability tool. Access data with a CA certificate and retain raw metrics for seven days.

> **🚨 Danger:**
> PromQL endpoint deprecated
>
> The PromQL endpoint and its `temporal_cloud_v0_*` metrics were deprecated on April 2, 2026 and are no longer accepting new users.
> The PromQL endpoint will be disabled for all users on **October 5, 2026**.
>
> Migrate to the [OpenMetrics endpoint](/cloud/metrics/openmetrics).
> See the [migration guide](/cloud/metrics/openmetrics/migration-guide) for a complete v0-to-v1 metric mapping.
>

Metrics for all Namespaces in your account are available from your metrics endpoint. Keep in mind that your Temporal Cloud metrics lag real-time performance by about one minute. Temporal Cloud also only retains raw metrics for seven days.

To ensure security of your metrics, a CA certificate dedicated to observability is required.
Only clients that use certificates signed by that CA, or that chain up to the CA, can query the metrics endpoint.
For more information about CA certificates in Temporal Cloud, see [Certificate requirements](/cloud/certificates#certificate-requirements).

- [General setup](/cloud/metrics/general-setup)
- [Available metrics](/cloud/metrics/reference)
- [Prometheus & Grafana setup](/cloud/metrics/prometheus-grafana)