How do I build a crypto payment gateway with swaps?

Grab TypeScript, ethers, Hono. Use swapapi.dev for quotes/tx. Config chains, fetch quotes, let customers sign.

What chains and tokens does swapapi.dev support?

46 EVM chains—Eth, Arbitrum, Base, BSC, etc. Any ERC-20 in, USDC/USDT out.

Is a non-custodial crypto gateway safe for merchants?

Yes—customer funds never touch you. Swaps atomic, settles direct. But watch gas, slippage.

$33T Stablecoin Boom: Build a Non-Custodial Crypto Payment Gateway in TypeScript

Stablecoin volumes smashed $33 trillion last year. Merchants, here's your TypeScript blueprint for a payment gateway that swaps any token to stablecoins instantly.

theAIcatchup Apr 09, 2026 3 min read

TypeScript code snippet for crypto payment gateway swapping ERC-20 to USDC on Ethereum

⚡ Key Takeaways

Stablecoin volumes hit $33T in 2025, pushing 46% of merchants to crypto. 𝕏
Build non-custodial gateway with TypeScript + swapapi.dev: free, multi-chain swaps. 𝕏
DIY beats vendor fees; poised for 19% market growth amid regulatory thaw. 𝕏

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theAIcatchup

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#ERC-20 swaps #TypeScript tutorial #TypeScript web3 #crypto-payment-gateway #non-custodial #non-custodial payments #stablecoins #swapapi.dev #typescript

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