An API (application programming interface) is the set of building blocks developers use to create software and applications. Think of it as the linking of information between one source and another and the automation of tasks between them. You can use Mercury's API to automate different parts of your Mercury account.
For all instructions to set-up and manage API tokens, please visit API documents. You can view all your API tokens under Settings > API Tokens accessible via your company logo in the top left-hand corner of the screen.