Positive and welcoming business name that includes the acronym API ("Application Programming interface").
The name "heyapi" has only six letters and just two syllables. Two-syllable names are very rare and highly prestigious. Examples of two popular syllable names include Walmart, Walgreens and Delta.
Heyapi.com is a dot-com domain. Dot com domains are the most prestigious domain extension in the world, famously used by websites like google.com. When you own a dot-com, it is much easier to rank for your own name in search engines.