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DIY Crypto Payment Gateway: Swaps, No Custody, Pure Chaos

Crypto payments hit $33 trillion last year. But merchants want stablecoins, not your dusty memecoins. Here's how to bridge that — warts and all.

theAIcatchup Apr 09, 2026 4 min read
Flowchart of crypto payment gateway: customer token swap to merchant USDC via DEX aggregator

⚡ Key Takeaways

  • Non-custodial gateways convert any ERC-20 to USDC/USDT via free swapapi.dev. 𝕏
  • Watch decimals — BSC USDT is 18, not 6. 𝕏
  • Build now: merchants crave it, but volatility lurks. 𝕏
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theAIcatchup

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#ERC-20 payments #ERC-20 swaps #TypeScript #TypeScript tutorial #crypto payment gateway #non-custodial payments #non-custodial swaps #stablecoins #swapapi.dev #typescript crypto

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Originally reported by Dev.to

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