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Everything I know about good API design

seangoedecke.com · 4,122 words · saved by 1 readers

Most of what modern software engineers do1 involves APIs: public interfaces for communicating with a program, like this one from Twilio. I’ve spent a lot of time working with APIs, both building and using them. I’ve written public APIs for third-party developers, private APIs for internal use (or consumption by a single frontend page), REST and GraphQL APIs, and even non-network interfaces like the ones for command-line tools. Like designing good software systems, I think much of the advice floating around about API design is too fancy. People get wrapped up in what “real” REST is, or whether HATEOAS is a good idea, and so on. This post is my attempt at writing down everything I know about designing good APIs. If this is true about systems - and it is - it’s even more true about APIs: good APIs are boring. An API that’s interesting is a bad API (or at least it would be a better one if it were less interesting). For the developers who build them, APIs are complex products that they spen

Most of what modern software engineers do 1 involves APIs: public interfaces for communicating with a program, like this one from Twilio. I’ve spent a lot of time working with APIs, both building and using them. I’ve written public APIs for third-party developers, private APIs for internal use (or consumption by a single frontend page), REST and GraphQL APIs, and even non-network interfaces like the ones for command-line tools. Like designing good software systems , I think much of the advice floating around about API design is too fancy. People get wrapped up in what “real” REST is, or whethe

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