Ask HN: Suggestions for books about API design?

Yep, I second this.

Don Norman’s “The Design of Everyday Things”

A philosophy of software design - John Ousterhout

Another excellent reference is the "The Linux Programming Interface" book by Michael Kerrisk

Domain Driven Design:

book is my recommendation if you haven't read it already

Maybe Lauret's The Design of Web APIs?

https://www.manning.com/books/the-design-of-web-apis

API design in C++ by Martin Reddy is a good text.

https://www.manning.com/books/api-design-patterns

His book Designing Hypermedia APIs is also quite good.

I like Framework Design Guidelines by Cwalina, Barton, and Abrams.

it's an excellent source of wisdom about the design of APIs

About REST : REST API Design Rulebook by Mark Massé (O'Reilly). My reference when I'm designing a REST API.