March 18, 2026, leading payment infrastructure company Stripe officially announced the launch of Machine Payments Protocol (MPP) on the X platform. This is an open standard jointly written by Stripe and Tempo, designed to provide programmatic payment solutions for internet-native AI agents (Agents), supporting scenarios such as microtransactions, pay-as-you-go, and recurring payments.

MPP Core Features and Stripe Integration

Stripe users can accept MPP payments with just a few lines of code through the PaymentIntents API. Businesses can directly receive payments from agents, supporting stablecoin payments, as well as fiat currency payments via Shared Payment Tokens (SPTs), including credit cards and "buy now, pay later" (BNPL) options. All transactions will appear seamlessly in the Stripe Dashboard and API, with funds settled into existing balances in the merchant's default currency, following standard payment cycles. Stripe's existing tax calculation, fraud protection, reporting, accounting integration, and refund infrastructure can directly serve agent payments without additional development.

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Overview of How It Works

When an agent requests resources from a service, API, Model Context Protocol (MCP), or any HTTP-addressable endpoint, the server returns a payment request; upon authorization, the resource is delivered immediately. This process makes machine-to-machine transactions as simple and efficient as human payments.

Real-World Application Cases

MPP has quickly empowered multiple cutting-edge agent business models:

  • Browserbase (a browser infrastructure provider) allows agents to start headless browsers and pay per session;
  • Postalform helps agents pay to print and mail physical letters;
  • Prospect Butcher Co. enables agents to order sandwiches in New York City, supporting both pickup and delivery;
  • Agents can also donate programmatically to the Stripe Climate initiative.

Paraga, founder of Parallel, commented: "Parallel was built to make agents the main users of the web. We integrated Stripe's machine payments with just a few lines of code, allowing agents to pay for each API call themselves. This lets us reach any agent developer globally, using the same Stripe technology stack we already have running."

Stripe's Agent Economy Strategy

MPP is a key component of Stripe's "Agentic Commerce Suite". This suite also includes the Agentic Commerce Protocol (ACP), MCP integration, and support for payments with MPP and x402. Tempo (a Layer 1 blockchain focused on payments, incubated by Stripe and Paradigm) launched its mainnet simultaneously, providing the underlying stablecoin payment infrastructure for MPP.

How Developers Can Get Started

Stripe encourages developers to act immediately: read the official documentation (https://docs.stripe.com/payments/machine) and apply for early access to begin building agent payment applications.

This move marks that the payments industry is fully embracing the AI agent economy. Traditional payment systems mainly serve humans, while open standards like MPP allow machines to complete transactions independently, significantly reducing friction in usage-based models such as API services, data access, and computing resources. Analysts believe this will drive the agent economy into an explosive growth phase.