This is the CLI for Apigee's Remote Service for Envoy. The CLI installs the "remote-service" proxy into Apigee Runtime and provides certain runtime management functions on the command line.
There is specific documentation for your Apigee platform:
Issues filed on Github are not subject to service level agreements (SLAs) and responses should be assumed to be on an ad-hoc volunteer basis. The Apigee community board is recommended as for community support and is regularly checked by Apigee experts.
Apigee customers should use formal support channels.