payment · announced

Machine Payments Protocol (MPP)

An open standard co-authored by Stripe and Tempo. Agents request a resource, receive a 402-style payment request, authorize, and the merchant can see the payment like any other PaymentIntent.

EditorialReported

Graph profile: /entities/mpp

What it is: Give agents an internet-native way to pay for APIs, MCP servers and HTTP resources, including settlement into existing merchant balances.
Who maintains it: Stripe, Tempo
Payment / transport model: Designed to be rail-agnostic, including cards and stablecoins. Tempo’s public mainnet note (18 March 2026) introduced MPP with Stripe. Stripe states support for both MPP and x402 inside a broader agentic commerce stack.
Networks: Tempo; card networks as described by the maintainers
Evidence: Official Tempo mainnet announcement and Stripe documentation dated 18 March 2026. Partnership language from card networks is not a volume disclosure.
Last verified: 7 September 2026

zFinia covers MPP as a strategically important rail. Announcement is not observed settlement volume.

Official documentation · Primary source · Explainer

Known ecosystem relationships

evt-mastercard-agentic-paymentsDISCUSSESmpp
evt-mcp-paid-tools-gapDISCUSSESmpp
evt-openai-apps-agents-commerceDISCUSSESmpp
evt-stablecoin-agent-wallets-patternDISCUSSESmpp
evt-stripe-mpp-blogDISCUSSESmpp
evt-tempo-mainnet-mpp-2026-03-18DISCUSSESmpp
mppIMPLEMENTShttp
stripeBUILDSmpp
tempoSUPPORTSmpp

Machine: https://api.zfinia.com/v1/graph/entities/mpp

Related intelligence

18 Mar 2026

EditorialTIER_Aofficial announcement

Tempo mainnet ships with Stripe-coauthored Machine Payments Protocol

On 18 March 2026 Tempo announced public mainnet RPC and introduced MPP, co-authored with Stripe. MPP lets an agent request a resource, receive a 402 challenge, authorize payment, and receive the resource. Tempo says Visa, Stripe and Lightspark have extended MPP across cards, platform methods and Lightning. Stripe’s own blog presents MPP as an open standard for agent payments, including settlement into existing Stripe balances.