khenzar (khenzar)
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https://snakeretroonbase.vercel.app
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GM
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I recently wrote a guide on how to build on Arc Testnet (Circle) using vibecoding. Today, I took it a step further: I built a mini onchain OS using Arc AppKit. GitHub: https://github.com/khenzarr/flowpay Live Demo: https://flowpay-sand.vercel.app 🧠 The process (simple, but intentional) I combined: * ChatGPT → for idea generation + system design * Kiro IDE → for execution Instead of jumping straight into coding, I: 1. Refined the product idea through conversation 2. Generated a build-ready MASTER PROMPT 3. Fed that prompt into Kiro 4. Let the system execute No chaos. Just structured iteration. ⚙️ What made the difference I embedded: * Arc documentation * AppKit references directly into my prompts. That single decision eliminated: * Contract mismatches * Network incompatibilities * Most debugging cycles Context is leverage.
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🌐 Cross-chain design (practical insight) For the USDC transfer system, I manually injected RPC configs for: * Ethereum Sepolia * Holesky * Linea Sepolia * MegaETH Testnet * Monad Testnet This resulted in: * Stable multi-chain execution * Minimal credit consumption * Predictable behavior across networks What FlowPay can do today? * Send USDC from Arc Testnet to other testnets * Deploy ERC20 tokens * Deploy NFTs * Deploy smart contracts All from a single interface. Product philosophy Most onchain apps over-abstract. FlowPay does the opposite: * No forced routing * No hidden automation * Full user control The system executes. The user decides. What’s next? * GM streak mechanics * Agent-based deployments * Full Arc AppKit integration I’ll continue building this in public and document everything along the way.
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