Linking from here:
https://openintegrationhub.github.io/docs/6%20-%20ReferenceDocumentation/APIReferenceOverview.html

The IAM link that goes here:
http://iam.openintegrationhub.com/api-docs/

Results in error:

"Error: Server Error
The server encountered a temporary error and could not complete your request.
Please try again in 30 seconds."