x420.dev is a lightweight API on the Base network that provides simple, fixed-amount purchases of the x420 token and a non-trading "spark" utility endpoint. It exposes three REST endpoints — two fixed USDC buy endpoints ($1 and $5) and an /api/spark action — making it easy to integrate micro-purchases and token-triggered behavior. With a very low per-call cost range ($0.0001–$5.00), it’s optimized for tipping, microtransactions, and minimal-friction DeFi integrations.