x402 is a Base-network API hub offering very low-cost (microtransaction) endpoints across DeFi, developer tools, and data services. It includes utilities for token minting and payment flows ($pong), ACP job budgeting, an API directory, and simple data endpoints like weather — all priced around $0.001 per call. This makes x402 a practical choice for developers building lightweight on‑chain/off‑chain integrations and early adopter community utilities.