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x402 by Coinbase: Changing How AI and Apps Pay Online

Key Takeaways

  • ​Coinbase’s x402 allows apps, websites, and AI programs to make stablecoin payments through the standard HTTP web protocol;
  • x402 revives the unused "402 Payment Required" code, which makes online payments as easy as sharing data;
  • The tool gives AI agents more autonomy and helps developers and creators offer flexible, usage-based payment options.

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x402 by Coinbase: Changing How AI and Apps Pay Online

On May 6, the cryptocurrency exchange Coinbase $1.87B announced a new payment tool called x402.

This system allows apps, websites, and artificial intelligence (AI) programs to make stablecoin payments directly over the internet using the standard web protocol, HTTP.

Coinbase designed x402 to revive a rarely used part of HTTP called the "402 Payment Required" code. By updating this feature, x402 makes it possible to send and receive payments as easily as sharing data online.

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The goal is to help both people and AI agents pay for services in a quicker and more efficient way. Erik Reppel, co-author of the x402 white paper and head of engineering at Coinbase Developer Platform, explained:

We’re laying the groundwork for an economy run not just by people, but by software — autonomous, intelligent, and always on.

One of the key benefits of x402 is to give AI agents more freedom, so they can pay for what they need, such as data access, computing power, or other services, without waiting for humans to top up credits or manage accounts.

For developers, x402 offers a way to charge users based on how much of a service they use. This could replace flat-rate subscriptions or credit card minimum payments. Content creators may also benefit by receiving stablecoin payments without relying on broad subscription models.

Bhutan has introduced a new way for tourists to pay using cryptocurrencies through a partnership with Binance Pay and DK Bank. How does it work? Read the full story.

Aaron S. Editor-In-Chief
Having completed a Master’s degree in Economics, Politics, and Cultures of the East Asia region, Aaron has written scientific papers analyzing the differences between Western and Collective forms of capitalism in the post-World War II era.
With close to a decade of experience in the FinTech industry, Aaron understands all of the biggest issues and struggles that crypto enthusiasts face. He’s a passionate analyst who is concerned with data-driven and fact-based content, as well as that which speaks to both Web3 natives and industry newcomers.
Aaron is the go-to person for everything and anything related to digital currencies. With a huge passion for blockchain & Web3 education, Aaron strives to transform the space as we know it, and make it more approachable to complete beginners.
Aaron has been quoted by multiple established outlets, and is a published author himself. Even during his free time, he enjoys researching the market trends, and looking for the next supernova.

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