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I know there is an API php library for v2 here:
and I'm sure it's not compatible with API v3.
Is there any API library for V3 ?
Solved! Go to Solution.
Currently we do not have any SDK wrapper libraries for our new V3 API as our development focus is on building out additional features. You can find full documentation on our V3 version here: https://v3.developer.constantcontact.com/api_guide/getting_started.html
Tier II API Support Engineer
Thank you for your message.
I have one more question regarding API V3. I'm following the steps here for server_flow Oauth2.0:
In step 4, I'm not sure where to find "client_secret". I went to "My Application" but all I see is API Key which is "client_id". Where is client_secret ?