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About 402x ​

One Protocol. Infinite Economies. ​

402x extends the HTTP 402 Payment Required status code to deliver frictionless, API-driven payments without accounts, emails, OAuth flows, or complex signing processes. Built on the Coinbase x402 Protocol, 402x enables instant micropayments for creators, developers, researchers, and AI agents across the web.

What is 402x? ​

402x is a comprehensive platform and ecosystem that makes the x402 protocol accessible and practical for real-world applications. We provide the tools, infrastructure, and use-case implementations that allow anyone to monetize content, APIs, tasks, communities, research, and more—all powered by instant, trustless micropayments.

The 402x Vision ​

The internet was built on free content and advertising-based business models. But this approach has limitations:

  • Creators struggle to monetize without subscriptions or intrusive ads
  • Developers can't easily meter API access or charge per-use
  • Researchers face paywalls that limit knowledge distribution
  • Communities battle spam and low-quality engagement
  • AI Agents need programmatic payment rails for autonomous transactions

402x solves these challenges by enabling instant value exchange at the protocol level—no intermediaries, no friction, just direct payments for digital goods and services.

The 402x Ecosystem ​

402x delivers seven core solutions built on the x402 protocol:

🔒 402x Paywalls ​

Fast content monetization via per-article, video, or post fees. Publishers set prices; users pay only for what they consume—no subscriptions required.

Learn more about Paywalls →

⚡ 402x APIs ​

Metered, pay-per-call access suited to AI, data, or SaaS endpoints. Developers can monetize API usage instantly without complex billing systems.

Learn more about APIs →

🤖 402x Tasks ​

Autonomous task marketplace for human and agent collaboration with instant settlement. Post tasks, complete work, get paid—all through simple API calls.

Learn more about Tasks →

👥 402x Communities ​

Fee-based community gating to reduce spam and boost engagement. Members pay to join, ensuring quality conversations and committed participation.

Learn more about Communities →

📚 402x Research ​

Pay-per-download or citation rewards for authors; instant access for readers and agents. Democratize research while fairly compensating creators.

Learn more about Research →

🎨 402x Widgets ​

No-code payment widgets for pay buttons, donations, or gated downloads. Add micropayments to any website in minutes.

Learn more about Widgets →

Why 402x? ​

For Creators & Publishers ​

  • Direct monetization without middlemen taking 30%+ cuts
  • Micropayment support for content worth cents, not just dollars
  • No subscription fatigue for your audience
  • Instant settlement of earnings

For Developers ​

  • API monetization built into your endpoints
  • No payment infrastructure to build or maintain
  • Usage-based pricing that scales with value
  • AI-ready for autonomous agent payments

For Enterprises ​

  • Professional tooling with dashboard analytics
  • Sandbox environments for testing
  • Enterprise support and SLAs
  • Compliance-ready payment flows

For Users ​

  • Pay only for what you use—no subscriptions
  • Privacy-preserving payments without accounts
  • Transparent pricing upfront
  • Seamless experience across 402x-enabled sites

Built on Coinbase x402 ​

402x is built on the x402 protocol, an open payment layer for Web3 created by Coinbase. The x402 protocol provides:

  • Instant settlement via blockchain rails
  • Trustless payments without intermediaries
  • Global accessibility for any user, anywhere
  • Programmable money for smart contract integration

402x makes this powerful protocol accessible through:

  • Easy-to-use APIs and SDKs
  • Pre-built templates and widgets
  • Comprehensive documentation
  • Developer tools and testing environments

Get Started with 402x ​

Ready to enable instant micropayments for your website, API, or application?

  1. Explore Use Cases to see what's possible
  2. Read the Protocol Overview to understand how it works
  3. Check the Dashboard to start building
  4. Review API Examples for implementation guidance

Open Source & Community ​

402x is committed to building an open, transparent ecosystem:

  • Open protocol: x402 is publicly documented and auditable
  • Developer-first: APIs, SDKs, and tools are free to use
  • Community-driven: Join our Discord and GitHub
  • Research & education: Read the x402 whitepaper

Contact & Support ​

Ready to build the future of micropayments? Get Started →