I built a crypto swap feature in 20 minutes using wagyu.xyz API

I needed to add cross-chain token swaps to a side project last week. Not a full DEX UI — just a backend endpoint that lets users swap ETH → USDC or USDC → XMR without me having to deal with routing logic or liquidity pools. I'd heard of wagyu.xyz from a Discord thread about DEX aggregators. Decided to give it a shot. Here's what 20 minutes of integration looks like. The API structure Wagyu uses a two-step flow: GET a quote — tells you the rate, estimated output, and timing POST an order — creates a deposit address; user sends tokens, swap executes automatically No private keys. No signing transactions on your backend. The deposit-address model is genuinely clean. Step 1: Get a quote const response = await fetch ( ' https://api.wagyu.xyz/v1/quote ' , { method : ' POST ' , headers : { ' Content-Type ' : ' application/json ' , ' X-API-KEY ' : process . env . WAGYU_API_KEY , }, body : JSON . stringify ({ fromChainId : 42161 , // Arbitrum toChainId : 0 , // Monero (yes, 0 = XMR) fromToken :