---
title: "x402 Deep Dive: A Payment Standard for the Internet"
url: https://daily.dev/posts/x402-deep-dive-a-payment-standard-for-the-internet-zeckslsdd
source_url: https://blog.developerdao.com/x402-deep-dive-a-payment-standard-for-the-internet
type: article
source: "Developer DAO"
published: 2025-10-30T11:12:54.282Z
updated: 2025-10-30T11:13:18.066Z
tags: ["nodejs", "blockchain", "web3", "express", "payment-processing"]
reading_time: 8
upvotes: 3
comments: 0
language: en
---

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# x402 Deep Dive: A Payment Standard for the Internet

**[Developer DAO](https://daily.dev/sources/developerdao)** · 8 min read · 3 upvotes · 0 comments

## Summary

x402 is a blockchain-based payment standard that enables micropayments for web services using the HTTP 402 status code. It works through a stateless flow involving buyers, sellers, and optional facilitators that verify payments. The standard uses EIP-3009 tokens like USDC and EIP-712 signatures for payment authorization. Implementation is straightforward using x402-express middleware for servers and x402-fetch for clients, with facilitators like x402-sovereign handling payment verification and settlement without requiring API keys.

## Full article

daily.dev links to this article rather than hosting it. Read it at the original source: <https://blog.developerdao.com/x402-deep-dive-a-payment-standard-for-the-internet>

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---

Tags: [#nodejs](https://daily.dev/tags/nodejs), [#blockchain](https://daily.dev/tags/blockchain), [#web3](https://daily.dev/tags/web3), [#express](https://daily.dev/tags/express), [#payment-processing](https://daily.dev/tags/payment-processing)

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