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x402 Protocol - Introduction

Welcome to BlockEden.xyz's x402 facilitator service. We provide enterprise-grade x402 payment infrastructure with a Sui-first, multi-network approach for autonomous AI commerce.

What is x402?​

The x402 protocol is an open-source payment standard developed by Coinbase that enables instant stablecoin micropayments directly over HTTP by activating the dormant 402 "Payment Required" status code. It reimagines internet payments for autonomous AI agents, enabling frictionless micropayments as low as $0.001 with sub-second settlement times and near-zero costs.

Key Features​

  • HTTP-Native: Works seamlessly with existing web infrastructure - no blockchain knowledge required
  • Instant Settlement: Sub-200ms settlement times on Layer 2 networks like Sui and Base
  • Trust-Minimizing: Facilitators cannot move funds beyond explicit client authorizations
  • Chain-Agnostic: Supports multiple blockchain networks through a unified API
  • Zero Protocol Fees: No fees at the protocol layer, only minimal blockchain transaction costs
  • Gasless Transactions: Users never pay gas fees directly - facilitators handle all blockchain complexity

BlockEden.xyz x402 Facilitator​

BlockEden.xyz acts as your x402 facilitator, handling payment verification, on-chain settlement, and compliance—all behind a simple HTTP API.

Why BlockEden.xyz for x402?​

  • Sui-First Optimization: Native Move smart contract integration, optimized for Sui's parallel execution model
  • Multi-Network Support: Support for 10+ blockchain networks including Sui, Ethereum, Base, Polygon, Avalanche, and more
  • Enterprise Reliability: 99.9% uptime SLA, 24/7 monitoring, and global edge network
  • Developer Experience: One-line code integration with comprehensive documentation and dedicated support
  • Production-Ready: Battle-tested infrastructure trusted by 400+ teams

How x402 Works​

The x402 protocol follows a simple flow:

  1. Client Requests Protected Resource: Your app or AI agent makes an HTTP request to a x402-protected endpoint
  2. 402 Payment Required Response: Server returns payment requirements (amount, token, network, recipient)
  3. Client Signs Authorization: Client generates cryptographic signature authorizing the payment
  4. Facilitator Verifies & Settles: BlockEden.xyz verifies the signature and executes on-chain settlement
  5. Resource Delivered: Your server delivers the protected resource with transaction confirmation

Use Cases​

x402 enables new business models with frictionless micropayments:

AI Agent Payments​

Enable autonomous agents to discover services, authorize payments, and complete transactions without human intervention.

Content Monetization​

Charge per article, video, or API call. No subscriptions, no minimums—just pay for what you use.

Developer APIs​

Monetize your APIs with account-free access. Users pay per request without registration or API keys.

Cloud Services​

Pay-as-you-go infrastructure for compute, storage, and blockchain services with true utility pricing.

Getting Started​

BlockEden.xyz's x402 facilitator service is currently in development. Join our waitlist to be among the first to enable x402 payments:

Visit our x402 landing page: https://blockeden.xyz/x402

Coming Soon Features​

  • Sui-optimized facilitator with Move-based smart contracts
  • Multi-network support across 10+ blockchains
  • Enterprise security with HSM-backed key management
  • Developer-first SDKs for TypeScript, Python, Rust, and Go
  • Real-time analytics and monitoring dashboard
  • AI agent tools with pre-built integrations (Claude MCP, OpenAI Functions, LangChain)

Learn More​

Technical Details​

Supported Networks (Coming Soon)​

  • Sui (Primary): Sub-200ms settlement, ultra-low costs, parallel execution
  • Base: Coinbase L2, optimized for micropayments
  • Ethereum: Maximum security for high-value transfers
  • Polygon: Fast and cost-effective
  • Avalanche: High-throughput transactions
  • And more: Continuous expansion of network support

Payment Standards​

x402 leverages established blockchain standards:

  • EIP-712: Typed structured data signing
  • EIP-3009: Transfer with authorization for gasless transactions
  • ERC-20: Standard token interface (USDC, USDT, etc.)

Security & Compliance​

BlockEden.xyz's x402 facilitator includes:

  • KYT/AML Compliance: Real-time transaction monitoring and OFAC checks
  • HSM-backed Security: Hardware security modules for key management
  • SOC 2 Type II: Certified infrastructure (planned)
  • Audit Trail: Complete on-chain transaction history

Community & Support​

  • Discord: Join our community at discord.gg/GqzTYQ4YNa
  • Documentation: Comprehensive guides and API reference (coming soon)
  • Developer Support: Dedicated support for integration assistance

Ready to enable x402 payments? Join the waitlist for early access and exclusive benefits.

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