Stripe MPP
./PayMachine Payment Protocol support for agent-initiated payments
OpenAPIMPP
$ 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
authAPI Key
onboardingPartial — dashboard signup, then API key
tosNeutral — no bot restrictions
webhooksYes
free tierNo
billingper-transaction
#payments#mpp#cards#subscriptions
https://stripe.com