1. Can I get developer email and app ID when accessing API proxy through OAUTH2 access token? How can I do that
2. If I use edge microgateway, can I also get same functionality? (Retrieve app ID and developer email through API key / bearer token)
OauthV2 policy can be used to achieve the same.
If you are using OAuthV2 policy with VerifyAccessToken operation you can extract developer email and app id using following flow variable.
developer.app.id
developer.email
You can get any additional information using Access Entity Policy .
https://docs.apigee.com/api-platform/reference/policies/access-entity-policy
Regards
Jayesh
What if I'm using apigee microgateway with API key credential?
Any way I can gee app id and email (e.g. through API with API key as parameter), etc?
From what I see here, it is the reverse of I need (know app ID, get the key), but I don't see any other API