I Stopped Swapping LLM Providers Without a Smoke Test

<p>I thought I had a fast API until my laptop printed twelve milliseconds for two hundred sequential GETs. Production p95 then sat near a full network round trip, and nobody could

<p>Most LLM client code has a retry branch that has never actually run. The provider returns 200 in every test, so the <code>429</code>, <code>500</code> and timeout paths sit

<p>Ask an engineer to list their agent's failure modes and you'll hear about hallucinations, wrong tool calls, and bad JSON. Ask about <em>time</em> and you get a shrug. Yet the

<p>We spend a lot of time testing whether a service can <em>start</em>. We spend far less time testing whether it can <em>exit</em>. A free model can scaffold an HTTP server, and

<p>Most Playwright suites stop right before the hard part of a signup flow: the "confirm your email" link, the emailed 6-digit code, the password-reset mail. The usual reasons are

<h2> TL;DR </h2> <p>Short answer: a polling-based SMS provider is enough for a basic Node.js OTP login, provided the auth service owns the polling schedule, retry limits, resend