Where to find the API key? Video
You can find it under Integrations and API > API. To obtain your key:
1. Click the Generate API key button.

2. Name your key. The name is up to you. It’s a good idea to use a name that will help you keep track of all the API keys you generate.
For safety reasons, we recommend generating a different API key for each of the integrations you build and use.
This key should be kept as secret as your password — don’t share it with anybody. The documentation for developers is available at API Docs page.