Coinbase has launched x402 Bazaar for AI agent-powered x402 micropayments.
The catalog exposes a machine-readable index of services that accept pay-per-request USDC payments and is positioned as a discovery layer for agents and developers integrating the x402 protocol.
Coinbase says Bazaar is in early development, and today, it indexes endpoints that settle through its hosted facilitator.
x402 revives the HTTP 402 “Payment Required” status code and a repeat-request flow in which the client attaches a signed payment payload.
Coinbase’s hosted facilitator verifies and settles the payment, so sellers do not need blockchain infrastructure, and the company states it charges no facilitator fee for USDC on Base.
Per Coinbase’s docs, current network support is USDC on Base mainnet and Base Sepolia, with additional assets on the roadmap. See the x402 overview, the facilitator documentation, and HTTP 402 background on MDN.
The whitepaper…
