# Required Files

The SDK expects the following files to be as part of the source distribution:

* [**metadata.json**](/guides/connectors-developer-guide/required-files/metadata-json.md): This file is used mainly for registering a connector with the Obsrv system.
* [**ui-config.json**](/guides/connectors-developer-guide/required-files/ui-config-json.md): This JSON configuration schema is used to define the data that the user interface (UI) will collect from the user to configure the connector.
* [**metrics.yaml**](/guides/connectors-developer-guide/required-files/metrics.yaml.md): This YAML configuration is used to define metrics for monitoring and reporting purposes in the  system.
* [**alerts.yaml**](/guides/connectors-developer-guide/required-files/alerts.yaml.md): This file contains the alert configuration, which will be converted into a Prometheus expression used to create the alert.


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