Mock any API response in Postman (and let AI build the collection)

<p>Last Tuesday I had a Swagger spec, a frontend kanban board UI to build, and a backend team who promised the API would be ready "by Thursday for sure this time".</p>

<p>Last month I was integrating with a payment API. Wrote my tests against a mock server, everything passed, shipped to staging — and the whole flow broke.</p> <p>The mock told me

<p>Every modern web application relies on Application Programming Interfaces (APIs) to exchange data between user interfaces and backend servers. Before writing code to consume an

<h2> Why API testing needs its own layer </h2> <p>Unit tests check a function in isolation. End-to-end UI tests check the whole product through a browser. Neither of those is

<p>If you’ve ever built a frontend prototype, mobile app, or design demo, you’ve likely run into this common headache:</p> <p>You connect your app to a mock REST API (like

<h1> I Let OpenClaw Build a Web App From Scratch - It Even Created the PayPal Plan </h1> <p><strong>TL;DR</strong>: I gave OpenClaw an idea. It built the entire product, deployed