BREAKING: Tempo Mainnet Goes Live with Machine Payments Protocol (MPP) for Autonomous AI Agents

Tempo, the payments-focused blockchain backed by Stripe and Paradigm, has officially launched its mainnet alongside co-authoring the Machine Payments Protocol (MPP)—an open standard enabling autonomous agent-to-agent payments. The launch signals a major infrastructure push into the burgeoning agentic commerce sector, coming just months after Tempo's $500 million raise at a $5 billion valuation and attracting heavyweight design partners including Anthropic, DoorDash, Mastercard, Nubank, and OpenAI.

What does Tempo’s Machine Payments Protocol (MPP) do?

MPP is designed to give AI agents a standard, rail-agnostic mechanism for coordinating payments programmatically. Rather than each service inventing its own billing flow, the protocol defines how agents request, authorize, and settle payments with external services, across stablecoins, cards, and other payment methods simultaneously.

With the MPP, thousands of small transactions can be aggregated into a single settlement, making true pay-per-use pricing viable at internet scale.

Stripe has extended MPP to support cards, wallets, and other payment methods on its platform; Visa has extended it for card-based payments across its network; and Lightspark has extended it for Bitcoin Lightning payments. 

A directory of more than 100 compatible services, spanning model providers, developer infrastructure, and data platforms, launches alongside mainnet. 

Early Stripe MPP integrations include Browserbase, which lets agents spin up headless browsers and pay per session, and Prospect Butcher Co., which lets agents order food for delivery.

Cloudflare also supports MPP, which was also acknowledged by Huang.

MPP enters a field already contested by Coinbase’s x402 protocol, which embeds stablecoin micropayments directly into the HTTP communication layer and is backed by a coalition that includes Cloudflare, Circle, Stripe, and Amazon Web Services. 

Analysts at McKinsey estimate that AI agents could mediate between $3 trillion and $5 trillion of global consumer commerce by 2030.

AI agent race powers institutional stablecoin rush 

The mainnet launch arrives twenty-four hours after Mastercard agreed to acquire London-based stablecoin infrastructure firm BVNK for up to $1.8 billion, the largest stablecoin acquisition on record, surpassing Stripe’s own $1.1 billion purchase of Bridge in February 2025. 

The deal is intended to link on-chain stablecoin payments with Mastercard’s global network for cross-border transfers, remittances, and business-to-business transactions.

“We expect that most financial institutions and fintechs will in time provide digital currency services,” said Jorn Lambert, Mastercard’s chief product officer, in a statement. Analysts at William Blair described the acquisition as “further affirmation of the stablecoin market for cross-border commerce.”

The two announcements in many ways hint that the contest for stablecoin payment infrastructure is no longer at the experimentation phase and that the stakeholders in the space are already building for the present and a future where AI agents use stablecoins routinely as they perform tasks all over the internet.

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