Explore your endpoints here:
https://apis-explorer.appspot.com/apis-explorer/?base=https://<your_appspot.appspot.com>/_ah/api#p/
For localhost go here:
http://localhost:8080/_ah/api/explorer
Explore your endpoints here:
https://apis-explorer.appspot.com/apis-explorer/?base=https://<your_appspot.appspot.com>/_ah/api#p/
For localhost go here:
http://localhost:8080/_ah/api/explorer