add x402 express.js template

[v1xingyue]

The template demonstrates how to use X402 payment system with Express.js, allowing API endpoints to charge for access using Solana USDC payments.

[vercel]

@v1xingyue is attempting to deploy a commit to the Solana Foundation Team on Vercel.

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[cxalem]

Hey there! 👋

It would be nice if you added a description of what you did on this template, it'll make it easier to review! 😄

[v1xingyue]

Hey there! 👋

It would be nice if you added a description of what you did on this template, it'll make it easier to review! 😄

Sorry, I forget it.

The template demonstrates how to use X402 payment system with Express.js, allowing API endpoints to charge for access using Solana USDC payments.

[GuiBibeau]

Thanks for the submission this is a great addition on x402 and we want to feature it!. A few more work is needed to get it into the format of publishing on our website:

A bit more detals here https://github.com/solana-foundation/templates/blob/main/COMMUNITY_TEMPLATE_GUIDE.md#directory-structure

• Getting a more friendly metadata in
• generate an og image
• generalize a bit to NPM where to possible to make this generalizable

[v1xingyue]

Seems all need changes have bee done. Tell me , if anything should I change.

[v1xingyue]

In fact this template do the same feature with X402 Next.js, but this is based on express.js. They are also based on corbits which is the x402 instruction.