Stellar has taken another step into the future of internet-native payments by adding support for the Machine Payments Protocol, or MPP, an open standard developed by Stripe and Tempo that allows AI agents and software applications to pay for services directly over HTTP. The update positions Stellar as a more practical settlement layer for machine-to-machine commerce, where software agents may need to pay for APIs, compute, data access, or digital services without relying on manual billing flows or human intervention. As AI systems become more autonomous, this kind of payment infrastructure could become increasingly important. Stellar says its implementation allows the MPP SDK to work with any stablecoin on the network while using server-sponsored fees, so agents do not need to hold separate gas tokens.
Stellar now supports the Machine Payments Protocol (MPP), the open standard by @stripe and @tempo that lets AI agents pay for services over HTTP.
The MPP SDK handles any stablecoin on Stellar with server-sponsored fees so agents never need gas tokens.https://t.co/GdPmRSOl9I pic.twitter.com/Dom8N7jPDw
— Stellar (@StellarOrg) April 3, 2026
The significance of this development lies in the friction it removes. One of the biggest obstacles to machine payments has been that most digital payment systems were designed for humans, not autonomous software. Traditional checkout flows, billing accounts, and API key models are not ideal for AI agents that need to discover, authorize, and complete transactions in real time. MPP addresses that by using the long-dormant HTTP 402 “Payment Required” standard to make payments a native part of online interactions. Under this model, an AI agent can request a resource, receive a price, authorize a stablecoin payment, and access the service in a streamlined flow that feels far more aligned with how software should transact. Stellar’s own documentation on x402 and machine payments describes this as a key building block for the emerging agent economy.
What makes Stellar especially well-suited for this use case is its payment-first design. The network has long focused on fast settlement, low transaction costs, and native support for stablecoins, all of which are critical for machine-driven microtransactions. In many blockchain environments, even small payments require users or applications to maintain a balance of a separate gas token, creating extra operational complexity and friction. Stellar’s server-sponsored fee model removes that problem by allowing fees to be covered without the paying agent needing to manage network-native gas. That makes the experience much closer to what developers and businesses expect from modern internet infrastructure. Stellar’s sponsored reserves and sponsorship tools already support this kind of cost abstraction at the protocol level.
The timing of this integration is also notable because it comes as both Stripe and Tempo are expanding their stablecoin payment infrastructure. Stripe has been actively rolling out more stablecoin payment capabilities, including support for crypto payment flows and API-based stablecoin transactions, while Tempo has been emphasizing stablecoin-native fee design and gas abstraction as a core part of internet-scale payments. In that context, Stellar’s support for MPP connects it to a wider movement around programmable, frictionless digital commerce that is increasingly being designed for software, agents, and APIs rather than just end users.
Ultimately, Stellar’s support for the Machine Payments Protocol reflects a much bigger shift than a simple technical integration. It suggests that blockchain networks are beginning to position themselves not just as financial rails for people, but as economic rails for software. If AI agents become a more active part of the digital economy, they will need native ways to pay, settle, and interact across services in real time. Stellar is clearly making the case that it wants to be one of the networks powering that future.
