docs/daprdocs/content/en/reference/environment/_index.md

type	title	linkTitle	description	weight
docs	Environment variable reference	Environment variables	A list of environment variables used by Dapr	300

The following table lists the environment variables used by the Dapr runtime, CLI, or from within your application:

Environment Variable	Used By	Description
APP_ID	Your application	The id for your application, used for service discovery
APP_PORT	Your application	The port your application is listening on
APP_API_TOKEN	Your application	The token used by the application to authenticate requests from Dapr API. Read [authenticate requests from Dapr using token authentication]({{< ref app-api-token >}}) for more information.
DAPR_HTTP_PORT	Your application	The HTTP port that the Dapr sidecar is listening on. Your application should use this variable to connect to Dapr sidecar instead of hardcoding the port value. Set by the Dapr CLI run command for self hosted or injected by the dapr-sidecar-injector into all the containers in the pod.
DAPR_GRPC_PORT	Your application	The gRPC port that the Dapr sidecar is listening on. Your application should use this variable to connect to Dapr sidecar instead of hardcoding the port value. Set by the Dapr CLI run command for self hosted or injected by the dapr-sidecar-injector into all the containers in the pod.
DAPR_METRICS_PORT	Your application	The HTTP [Prometheus]({{< ref prometheus >}}) port that Dapr sends its metrics information to. Your application can use this variable to send its application specific metrics to have both Dapr metrics and application metrics together. See [metrics-port]({{< ref arguments-annotations-overview>}}) for more information
DAPR_API_TOKEN	Dapr sidecar	The token used for Dapr API authentication for requests from the application. Read [enable API token authentication in Dapr]({{< ref api-token >}}) for more information.
NAMESPACE	Dapr sidecar	Used to specify a component's [namespace in self-hosted mode]({{< ref component-scopes >}})