nanopayment-x402

Access AIsa x402-paid /apis/v2/ endpoints using mainnet USDC and Circle Gateway across 11 EVM chains (Ethereum, Base, Avalanche, Arbitrum, OP, Polygon, Unichain, Sonic, World Chain, Sei, HyperEVM). Use when setting up x402 payments, creating or funding a wallet, depositing into Circle Gateway on a specific chain, picking the right AIsa endpoint for a task, estimating per-call cost, or making paid AIsa API calls without an API key. 104 endpoints across Twitter, Financial, Search, Scholar, Perplexity, YouTube, and CoinGecko categories.