3. Do I need to apply beforehand or submit documentation to create an API? July 01, 2021 03:59 Updated Absolutely not. There is no application or documentation required to use the ADDX Open API. Related articles 4. What does ‘usage’ mean for the Open-API? 2. What are the requirements to use the ADDX Open-API? 1. What fees does ADDX charge issuers? 4. Can the custodianship of my digital securities be moved to another provider? 1. What transfer methods can I use to fund my ADDX account? Comments 0 comments Please sign in to leave a comment.