x402
./PayOpen HTTP 402 standard for per-request stablecoin payments, now at v2 and governed by the x402 Foundation
OpenAPIllms.txtx402
$ protocol support
$ payment protocols
x402x402Coinbase, x402 Foundation · settlement
HTTP 402 standard for per-request stablecoin payments between an agent and an API
$ agent access
authNo Auth (x402)
onboardingFull — agent can self-onboard
tosExplicitly welcomes bots
webhooksNo
free tierNo
billingper-transaction
#x402#payments#stablecoin#http-402#protocol
https://www.x402.org
// last verified 8/26/2026
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