Flickr’s API arrived years after the web learned to stitch systems together. This chapter traces the 1995–1998 building blocks—forms, CGI, early JavaScript, and pragmatic “API-like” endpoints—that made media-sharing integrations possible.
In 1990–1994, the Web’s “API surface” was mostly URLs, HTTP methods, and early server scripts—not JavaScript calling APIs. This chapter explains how that era set up the later need for CORS and modern cross-origin rules.
Swagger and OpenAPI feel modern, but their core ideas—contracts, endpoints, headers, and examples—trace back to the Web’s earliest HTTP interfaces. This chapter looks at 1990–1994 documentation practices that quietly set the pattern for today’s API tooling.
Long before Twilio made communications programmable, the early Web (1990–1994) established the practical building blocks of web APIs: URL addressing, request/response patterns, and simple server interfaces that taught developers how to “call” a service over HTTP.
A chronological look at 1990–1994, when the Web’s earliest HTTP interfaces and URL conventions laid the groundwork for modern web APIs—providing historical context for developer-first platforms like Stripe.
XMLHttpRequest and AJAX didn’t arrive in the early 1990s—but the Web’s first HTTP interfaces did. This chapter explains the 1990–1994 foundations (URLs, HTTP requests, forms, and CGI) that made asynchronous web APIs inevitable.