x402 (Coinbase)
./PayHTTP 402 payment protocol for pay-per-request with stablecoins
OpenAPIx402
$ protocol support
[✗]MCP Server
[✓]OpenAPI Spec
[✗]Accepts MPP
[✓]Accepts x402
[✗]Supports ACP
[✗]Supports UCP
[✗]Skill File
[✗]Plugin Manifest
[✗]llms.txt
[✗]Structured Feed
[✗]Agent Protocol
$ agent access
authNo Auth (x402)
onboardingFull — agent can self-onboard
tosExplicitly welcomes bots
webhooksNo
free tierNo
billingper-transaction
#payments#x402#stablecoin#http-402
https://www.x402.org