0xSammy: I’ll release a report on x402 today
@stripe : Hold my beer. Enter the Machine Payments Protocol “MPP”
TLDR:
- Stripe Paradigm launched
@tempo mainnet today (March 18); payments-focused L1, EVM-compatible, 100K TPS, sub-second finality, stablecoin gas fees ($0.001)
- Simultaneously released Machine Payments Protocol (MPP); open standard for agent-to-service payments co-authored with Stripe
- MPP flow: agent requests resource → service returns payment request → agent authorizes from wallet → instant settlement → resource delivered
- Rail-agnostic: runs on Tempo today but designed to work across any payment rail
- Visa extended it for cards; Stripe extended it for cards/wallets; Lightspark extended it for Bitcoin Lightning
- Design partners: Anthropic, OpenAI, Visa, Mastercard, Shopify, Revolut, Nubank, Standard Chartered, DoorDash, Ramp
Relationship to x402:
- x402 handles the HTTP-layer discovery (“this resource costs money”);
- MPP handles the settlement layer (“here’s how the money actually moves”)
Stripe is positioning to own both sides; it’ll be interesting to see which protocol the machines decide to use!?
Either way it’s bullish for agentic commerce
Khala report below contains a broader coverage on x402 with some research on Tempo/Stripe