The Bitcoin native stablecoin payment execution and settlement layer Utexo announced today a partnership with x402 to bring USDT compatibility to the x402 payment protocol, supporting real-time, agent-to-agent transactions with settlement speeds of up to 50 milliseconds.

x402 is an open protocol that allows for the payment functionality to be directly embedded into HTTP requests using the HTTP 402 "Payment Required" status code. This enables applications, APIs, and autonomous systems to pay service fees in real-time without relying on accounts or preloaded balances.

With the integration of Utexo, developers using x402 can now conduct USDT transactions, which not only extends the initial support for USDC but also increases access to one of the most widely used stablecoins in the global market.

Utexo's infrastructure is designed to handle high-frequency, low-latency transactions, making it highly suitable for machine-driven payments that demand greater speed and reliability.

Utexo co-founder and CEO Viktor Ihnatiuk stated:

x402 provides a new way for the flow of value on the internet by embedding payments directly into requests. Supporting USDT within this framework significantly expands access and provides developers with the performance needed to build real-time, agent-driven systems.

Kevin Leffew, head of the x402 project at Coinbase, added:

Our goal with the launch of x402 is to make payments a seamless part of internet operations. Expanding access to more stablecoins can enhance performance and broaden the asset support range, which helps accelerate developer adoption of x402 for building autonomous and API-based services.

This integration supports an increasing number of application scenarios, where software systems conduct transactions independently, including payment API call fees, on-demand data access, and cross-platform service coordination without human intervention.

With the widespread deployment of AI systems and autonomous agents, the demand for fast, programmable payments continues to grow. By combining the x402 protocol with Utexo's settlement infrastructure, this collaboration supports a model that allows transactions to be as swift and efficient as the requests that trigger them.

About Utexo

Utexo is a Bitcoin-based stablecoin payment execution and settlement layer. It combines the instant execution of the Lightning Network and the privacy-protecting asset issuance mechanism of RGB, enabling payment operators to process USDT transactions instantaneously at predictable costs with complete privacy in execution.

About x402

x402 is an open payment protocol designed to make payments a native part of the Internet by embedding payments directly into HTTP requests. The protocol is based on the long-unused HTTP 402 status code, allowing servers to request payment when responding to queries, thus enabling instant, request-based transactions for APIs, data services, and machine-driven applications.

The early development and application of x402 have been closely tied to the evolving stablecoin ecosystem around USDC, along with the tools and infrastructure that have emerged alongside networks and developer platforms related to Coinbase. This makes x402 an ideal choice for developers already working with on-chain payments and API-native financial flows.

By expanding support for USDT and integrating Utexo's high-speed settlement capabilities, x402 is broadening its reach beyond its initial user base and moving toward a more asset-neutral internet-native payment standard.