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Metrics can be used to track how Watchtower behaves over time.
To use this feature, you have to set an [API token](arguments.md#http-api-token) and [enable the metrics API](arguments.md#http-api-metrics),
To use this feature, you have to set an [API token](arguments.md#http_api_token) and [enable the metrics API](arguments.md#http_api_metrics),
as well as creating a port mapping for your container for port `8080`.
The metrics API endpoint is `/v1/metrics`.