Integrating flyctl

The flyctl command has a number of features that enable it to be seamlessly integrated with scripted and automated environments such as CI.

Environment variables

• FLY_ACCESS_TOKEN is an environment variable which can be used to pass an access token to an instance of Flyctl. The token may be obtained using flyctl auth token. A token with permission to manage a single app can be generated with fly tokens create deploy.
• FLY_APP is an environment variable which is used as the application name.

JSON output

Many flyctl commands can produce JSON output using the --json or -j flag. The JSON may be streamed messages in JSON-NL format or a single JSON object, depending on what is being requested.