Monad API Hub enables pay-per-request access to APIs with USDC

Monad’s API Hub hosts 66 active services from independent providers, all accessible through pay-per-request micropayments. Prices range from $0.01 to $7.50 per endpoint call, with analytics heavyweight Nansen contributing 83 different endpoints alone. At the core of the system sits the x402 v2 protocol, an open standard for internet-native payments that turns every API call into a tiny financial transaction. When a developer or an autonomous AI agent makes a request, the x402 facilitator on Monad handles verification and on-chain settlement automatically. The protocol operates on Monad’s mainnet (chain ID eip155:143) and its testnet. Payments settle exclusively in USDC, Circle’s dollar-pegged stablecoin. Monad’s mainnet launched on November 24, 2025, with native USDC support and developer tools from Circle baked in from day one. The blockchain targets sub-second finality and up to 10,000 transactions per second. Autonomous AI agents need programmatic access to information but traditional API marketplaces require account creation, email verification, credit card entry, and key management. Pay-per-request with USDC strips all of that friction away. At $0.01 per call on the low end, a...