Stripe launches Machine Payments
Stripe unveiled the Machine Payments Protocol (MPP) and Tempo blockchain to let AI agents initiate, authenticate and reconcile payments natively—aiming for high-frequency, low-value micropayments and agent-to-agent commerce. The move shifts payment-system design toward event-driven, auditable flows and built-in compliance hooks for autonomous workflows. (cryptopolitan.com) (forrester.com)
Tempo’s Tempo mainnet and the Machine Payments Protocol (MPP) were publicly launched on March 18, 2026, with the MPP described as an open standard co-authored by Stripe and Tempo. (tempo.xyz) Stripe’s product announcement names Jeff Weinstein and Steve Kaliski as leads and says businesses can accept MPP payments “in a few lines of code” using Stripe’s PaymentIntents API. (stripe.com) Stripe’s developer docs put machine-pay-per-use pricing as low as 0.01 USDC and describe an x402 HTTP flow where a server returns a 402, the client pays, then retries with authorization. (docs.stripe.com) Tempo announced it raised $500 million at roughly a $5 billion valuation in 2025 and lists design partners including OpenAI, Anthropic, Visa, Shopify, DoorDash, and several banks. (theblock.co) Tempo’s whitepaper and launch materials position the chain for high-throughput payments—claiming design targets in the tens of thousands to 100,000+ transactions-per-second range with sub‑second finality and fee predictability. (blockworks.com) The launch day ecosystem included a payments directory of 100+ integrated services and immediate rail extensions: Visa published a card-spec/SDK to support MPP on its network while Tempo documented Lightspark’s adaptation for Bitcoin Lightning payments. (tempo.xyz) Forrester’s analysis flagged MPP’s structural difference from earlier micropayment attempts—specifically that MPP embeds payments as a programmatic, non‑human decision step via session primitives rather than a user confirmation. (forrester.com)
