We are excited to introduce x402–a new open source payments protocol built on HTTP rails. Let’s break it down:
x402 is fixing the internet’s first mistake. Onchain payments are now easy and frictionless, opening new use cases for agentic commerce for API providers, context retrieval protocols, content creators, and more.
First, a little history: HTTP 402 “Payment Required” has been a part of the internet’s blueprint for decades, but it was never used. x402 turns this 402 status code into a real payment layer—letting any server request payment, and any client (human or agent) respond with
Research shows that agents that have access to external APIs, context, and tools consistently outperform models who only have access to internal reasoning or websearch. Today, giving agents access to external context and APIs is a high-friction process, with lots of manual
For API providers and developers, subscription models are outdated, UX-heavy, and cumbersome for agents to navigate. Pay-per-use APIs without subscriptions are now possible with x402. Pay-per-use API microtransactions have the potential to “kill the API key” and replace it with
Content creators, you can now monetize your content as model context without the need for blanket subscriptions or credit card minimums and enjoy near-zero fees and nearly instant payments. Imagine unlocking your content for your audience by letting them pay by article read,
For service providers, CDP can help you with: → Easy x402 integration → No chargebacks or middlemen → Built-in compliance and security → Real time revenue, balance, and transaction dashboards All with a few lines of code. Get Started with Coinbase x402 Facilitator service:
We’re excited to build out x402 alongside our community and create an open standard to drive forward agentic finance. We’re open to any contributions to the open-source x402 protocol repo, and plan to decentralize our roadmap soon. Want to learn more about x402? → Check out:
A huge thank you to our x402 launch collaborators: @AnthropicAI, @awscloud, @base, @calcom, @chainlink, @circle, @fewsats, @hyperbolic_labs, and @NEARProtocol.

