The miniasync project will no longer be maintained by Intel.
C API of miniasync is documented in the form of manpages.
For the current master branch you will find them here
Blog posts related to miniasync can be found using dedicated blog tag.
All news and announcements (e.g., about recent releases) related to miniasync can be found here.
The contents of this web site and the associated GitHub repositories are BSD-licensed open source.