X402 on Solana explained— Micropayments, Facilitator vs Native & Live Demos

Description

🧰 Useful Links 🔗 Join the Hackathon: https://x.com/solana/status/1983274986027856208 📘 x402 Guide: https://solana.com/de/developers/guides/getstarted/intro-to-x402 💡 X402 Spec & Docs: x402.org 🧪 Try the Demo: https://solana-paywal.vercel.app/ 🚀 Submit Your Project: https://solana.com/de/x402/hackathon 🌐 Follow Me 🐦 X (Twitter): @SolPlay_jonas 📸 TikTok: @jonashahnsolana 💬 GitHub: github.com/woody4618 🎥 YouTube: youtube.com/@jonashahnsolana 💼 LinkedIn: https://www.linkedin.com/in/jonas-hahn-9488a810/ Today we’re diving into HTTP 402 (Payment Required) and the X402 protocol — an open standard that enables micropayments and pay-per-use directly on the internet. Built on Solana, X402 lets apps charge fractions of a cent for API calls, content access, or AI agent interactions — no subscriptions, no ads, just seamless payments. We’ll go step-by-step through the specification, explain how facilitators simplify the backend, and compare them with native Solana implementations. Then we’ll explore real examples using Corbit, Google A2A agents, and Coinbase’s reference SDK — plus all major SDKs with Solana support. Perfect for developers building AI tools, APIs, paywalls, DePIN devices, or data dashboards that monetize per request. Chapters 00:00 – Intro: The new HTTP 402 “Payment Required” 00:25 – What X402 enables: micropayments & pay-per-use internet 01:00 – Demo: Unlocking content with a 1¢ Solana payment 02:00 – Real examples: image paywalls, music generator, AI bots 03:00 – How it works: 402 request-response flow explained 03:55 – The facilitator API (verify & settle flow) 04:35 – Direct vs facilitator-based Solana implementation 05:00 – The open protocol: x402.org overview 05:20 – Use cases: pay-per-API, LLMs, dashboards, data access 06:10 – More use cases: AI data, streaming, DePIN, gaming, IoT 07:00 – File downloads, peer-to-peer networks & creative ideas 08:20 – SDK overview: Corbit, MCPayTech, Pay.AI, Coinbase 09:20 – Agent Commerce Kit (ACK) and agent identity 10:45 – Crossmint, A2A (Google), and multi-chain expansion 12:20 – X402 Scan: live stats & integrations 13:45 – Example 1: Corbit end-to-end quickstart (RPC on Solana) 15:30 – Example 2: Google agent-to-agent banana demo 18:10 – Example 3: Native Solana implementation (no SDK) 19:25 – Client & server flow: USDC payment verification 21:45 – Validating transactions and sending premium content 23:00 – Coinbase facilitator version (withPayment interceptor) 24:10 – Facilitator pros & cons: convenience vs control 25:00 – Summary: building with X402 + Solana hackathon invite 25:45 – Outro: join the hackathon & share your builds Call to Action Building something with X402? Share your repo or demo in the comments — I’ll pin the best examples. Also, check out the ongoing Solana Hackathon (50K USDC in prizes) and tag your project to get visibility from the DevRel team.