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❄️Welcome to Yuki402

Your AI Agent Settling Payments at Light Speed

No more waiting. No more clicking. Yuki autonomously handles every payment the moment an API asks for it—slashing through HTTP 402 status codes with blockchain-powered precision. It's magic, but make it crypto.

AI Powered
Next.js 16
x402 Protocol

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🚀 What is Yuki402?

Yuki402 is your autonomous AI payment agent powered by the x402 protocol. Think of it as your personal crypto-native assistant that intercepts HTTP 402 Payment Required responses and executes blockchain payments faster than you can say "gas fees."

The Alpha:

  • 🤖 Pure Autonomy - Yuki intercepts HTTP 402 responses instantly and executes payments without you lifting a finger

  • ⚡ Lightning Speed - 2-second settlements on Solana—faster than you can say "gm"

  • 💎 Zero Platform Fees - No middlemen. Only blockchain gas + service costs. That's it.

  • 🌐 Chain Agnostic - Works with Ethereum, Solana, or any blockchain that speaks x402

  • 🚫 No Accounts Required - Forget OAuth, emails, and sign-ups. Access services directly with crypto.

  • 🔓 Open Protocol - Built on x402—the open standard for internet-native payments

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💎 Why This Matters

We're building the infrastructure for the machine economy. When AI agents need to pay other machines for data, services, or compute—they use Yuki402. When developers want to monetize APIs instantly without auth infrastructure—they use x402. When crypto enthusiasts want to experience true web3 payments—they use Yuki402.

Here's the alpha: 100% of platform fees flow directly into automatic $YUKI buybacks. Not some of it. Not most of it. ALL of it. More payments = more buybacks = more value accruing to holders. It's DeFi done right.

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🎯 Quick Navigation

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🏁 Getting Started

New here? Start with these:

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✨ Core Features

What makes Yuki special:

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📖 User Guides

Master Yuki like a pro:

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🏗️ For Developers

Want to build or integrate?

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🔧 Help & Resources

Need assistance?

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🌊 How Yuki Works

It's a four-step dance:

  1. You Ask → Your app requests premium data from any x402-enabled API

  2. API Responds → The API sends back HTTP 402 with payment instructions

  3. Yuki Strikes → In milliseconds, she signs the transaction, broadcasts it to Solana, and secures cryptographic proof

  4. You Win → The API verifies payment instantly and delivers your premium data

Zero clicks. Zero friction. Pure automation.

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💡 Real-World Use Cases

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For Developers

Build AI agents that autonomously pay for API access, create tools that consume paid services without manual intervention, access premium data sources programmatically.

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For API Providers

Monetize your API instantly—no auth infrastructure needed, accept payments in crypto with cryptographic verification, tap into the machine economy.

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For Token Investors

Hold $YUKI for lifetime fee-free access, benefit from automatic buybacks funded by platform fees, participate in a deflationary token economy.

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For Crypto Enthusiasts

Experience true web3 payments in action, no wrapped tokens or custodial wallets—just pure blockchain, watch autonomous agents handle value transfer.

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🎓 Learn the Protocol

Yuki402 is built on the x402 protocol—the open standard for internet-native payments:

  • Programmatic Payments: APIs tell you what they cost. Yuki pays. You get access. Simple.

  • Trustless Transactions: Every payment is verified on-chain with cryptographic proof

  • Machine Economy Ready: Built for autonomous agents to pay other machines at scale

  • No Platform Lock-In: It's an open protocol—anyone can implement it, no permission needed

Learn more:

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🚀 Ready to Start?

  1. Install Yuki402 - Follow the guide

  2. Connect your wallet - MetaMask, Phantom, or any Web3 wallet

  3. Set spending limits - Start conservative, scale up as you get comfortable

  4. Make your first payment - "Get me weather data for London"

That's it. Welcome to the future of autonomous payments.

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🤝 Community & Support

Need Help?

Want to Contribute?

  • Yuki is open source and thrives on community contributions

  • Found a bug? Open an issue

  • Built something cool? Submit a PR

  • Have ideas? Start a discussion

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💻 Tech Stack

Yuki is powered by cutting-edge web3 tech:

  • Next.js 16 – App Router for blazing-fast routing

  • Tailwind CSS 4 – Modern styling with zero config

  • Framer Motion – Buttery smooth animations

  • Vercel AI SDK – Google Gemini powers Yuki's brain

  • Solana Web3.js – Lightning-fast blockchain settlements

  • x402 Protocol – The heart of autonomous payments

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⚠️ Important Disclaimers

  • You're In Control: Set spending limits. Monitor transactions. You're the boss.

  • Blockchain is Permanent: All transactions are irreversible—double check before approving

  • Trust, But Verify: Always verify the services you're accessing

  • Experimental Software: Yuki is cutting-edge tech—use at your own risk

  • Not Financial Advice: This is a technology demonstration, not investment advice

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📄 License

MIT License – Free to use, modify, and deploy. Build the future of payments with us.

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🌐 External Resources

Built with the x402 protocol for autonomous, internet-native payments.

Powered by Solana • Made for the machine economy • Open source forever

🌐 Websitearrow-up-right • 📖 Docsarrow-up-right • 💬 Communityarrow-up-right

Ready to dive in? Start with the Quick Start Guide →

NextQuick Start

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