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BillionCore.tech
Neutrino API
Turn any card BIN into a decision, not just metadata. In under 1ms you get an approve / review / decline call, a risk score with reasons, issuer data, and card-performance signals (rebill, refund, chargeback risk + projected LTV).
Most BIN APIs return brand/bank/country and stop. BillionCore returns a recommendation you can act on โ fast enough to run inline at checkout โ with the reasoning attached.
One REST GET endpoint, JSON, key auth, batch supported. Call it from any stack in minutes. Also on RapidAPI.
Start free โ 30-day Pro trial, no card.
๐ Live demo, no signup: https://billioncore.tech
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CodePen is where creativity meets frontend code. You can write HTML, CSS, and JavaScript and see results instantly in the browser. - Source: dev.to / 11 months ago
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For this CSS Art challenge, I wanted to step out of my comfort zone. While I've used CSS extensively for web apps and websites, I had never built an art piece purely with CSS. I started by diving into codepen and other inspiration sites, getting a feel for what was possible. Eventually, a rough sketch of an office atmosphere in Excalidraw became my guiding vision. My goal was to depict a typical office scene,... - Source: dev.to / 11 months ago
JSFiddle - Test your JavaScript, CSS, HTML or CoffeeScript online with JSFiddle code editor.
Neutrino API - Neutrino API solves recurring problems encountered during the development of software systems.
CodeSandbox - Online playground for React
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replit - Code, create, andlearn together. Use our free, collaborative, in-browser IDE to code in 50+ languages โ without spending a second on setup.
VS Code - Build and debug modern web and cloud applications, by Microsoft