Build Svelte components that interact with Solana programs - token balances, transfers, and real-time updates.

Handle Solana errors gracefully, implement proper confirmation patterns, and build resilient transaction flows.

HTTP 402 'Payment Required' finally has a real implementation. Learn how x402 enables pay-per-request APIs and micropayments on the web.

Build an Express API that requires Solana USDC payments. Return 402, verify payments, serve content.

Create a JavaScript client that automatically handles x402 payment flows - detecting 402s, making payments, and retrying requests.

Build a complete SvelteKit application with x402 payments - wallet connection, protected routes, and automatic payment handling.

Implement dynamic pricing, session tokens for repeat access, and usage tracking for your x402 APIs.

Deploy your SvelteKit frontend and Bun backend to production. Environment setup, mainnet configuration, and monitoring.