Retention in one call: pass up to 10 tokens to snapshot them and get a watchId; ...
https://402.com.tr/api/x402/watchlist-diffOverview
Retention in one call: pass up to 10 tokens to snapshot them and get a watchId; call again with that watchId to get only the DELTAS since last time — liquidity ±%, price ±%, became-honeypot, sell-tax spiked, liquidity pulled. The second call is worth more than the first. Built for agents holding positions that re-check daily.