Welcome — submit your x402 project or suggest additions

[Haustorium12]

About this list

This is a curated collection of x402 protocol resources — SDKs, tools, services, facilitators, examples, articles, and ecosystem projects. Currently tracking 300+ projects across the x402 ecosystem.

How to contribute

Option 1: Open a PR
Add your project directly to README.md following the existing format. One project per PR.

Option 2: Drop it here
Post a comment with:

• Project name and URL
• One-line description
• Which section it belongs in

We'll add it for you.

What we're looking for

• New x402-compatible services and APIs
• SDK implementations in any language
• Tutorials, blog posts, and deep dives
• Tools and utilities for x402 development
• Production deployment case studies
• Facilitator implementations
• AI agent integrations

Stay updated

Watch this repo and star it to stay in the loop. We update regularly as the x402 ecosystem grows.

The x402 Foundation launched under the Linux Foundation on April 2, 2026 with 22+ founding members including Coinbase, Stripe, Cloudflare, Visa, Mastercard, AWS, and Google. This space is moving fast.