Could it be possible to have a node to sync contacts+ (https://www.contactsplus.com/) ?
Can you please explain what functionality you would need exactly. That if it gets implemented we can be sure it can do what you need it to. Thanks!
The API documentation can be found her
https://www.contactsplus.com/developers/contacts-api/
The integration could cover:
- contact search
- create contact
- update contact
- delete contact (?)