BlockRun Building the AWS of Agent Commerce (4 minute read) (opens in new tab)

x402 revives the HTTP 402 status code, reserved but unused since 1997, as a machine-native payment rail: an agent requests a resource, the server returns a price and wallet address, the agent pays in USDC, and the server delivers with no API keys, subscriptions, or human approval required. USDC's sub-cent transfer costs and instant settlement make the economics viable where credit cards and API key systems break down at agent scale. BlockRun is building the aggregation and discovery layer on ...