x402 has a public repository (https://github.com/coinbase/x402) under the Apache-2.0 license, recording 2,577 GitHub stars.

x402

Skill

Internet's payment standard. An open standard for internet-native payments that empowers agentic payments at scale. Build a more free and fair internet.

x402.org Source★ 2,577Apache-2.0Software Development / Auth, Payments & Billing Infrastructure

AI Benchmark

Desktop

Mobile

Monthly visits: None yet; No traffic data yet
Public revenue: Undisclosed; No public revenue evidence yet
Entry price: Free; No monthly subscription pricing
Creators: Brian Armstrong; @brianarmstrong· 4M followersCo-created with erik.eth 🛡
Launched: 19mo ago; 2025-05-06 · Est.

Traffic

Monthly visits

No traffic data yet.

Events22 changes · 1 marketing move

Marketing moves

Launches, search & content, referrals, promotions

X accounts@brian_armstrong @brianarmstrong @dankimxyz @programmer

crypto × AI infrastructure is moving from experimentation toward real economic activity agents need to pay for services, establish trust, access intelligence, consume compute and retrieve data the infrastructure forming around these needs
@cryptoteca__ · 2026-11-12 · 69 likes · 5 reposts · 911 views
Insane behaviour. I wanted to test out @vercel's sandboxes, installed their cli and ran `vercel`, logged in, connected a project, and the cli immediately uploaded all the code in the current directory. Check settings, by default they enabl
@programmer · 2026-11-07 · 314 likes · 9 reposts · 33.5K views
TY 引用帖 @gaspardlezin： 50 fintech founders worth following on X > payments > stablecoins & rails > infra, spend, neobanks > the agentic payments crowd who did i forget? stablecoins & rails: @jerallaire @brian_armstrong @psneville @Nick_v
@yuvalrooz · 2026-11-04 · 52 likes · 6 reposts · 3,487 views

Launched on Show HN (2 pts · 1 comments)Launch
We put ZK attribute proofs inside x402 payment headers — Every x402 settlement in this repo carries a ZK proof bundle in PAYMENT-RESPONSE: issuer identity, payment settlement, and data integrity,…
Apr 28 · 7mo agoLaunch page
Launched on Product HuntLaunch
An open protocol for internet-native payments from Coinbase
May 8, 2025 · 19mo agoLaunch page
Launched on Show HN (16 pts · 6 comments)Launch
X402 – an open standard for internet native payments — Hi HN – excited to announce x402, initially developed by Coinbase (YC 12) x402 lets any HTTP API charge per request without issuing API ke…
May 6, 2025 · 19mo agoLaunch page

Third-party reviews & case dossiers

Acquisition breakdowns, engineer reviews & open-source metrics

Show HN

2025-05-06Source

Post excerpt:: Hi HN – excited to announce x402, initially developed by Coinbase (YC 12) x402 lets any HTTP API charge per request without issuing API keys or storing credit cards. Buyers (humans or AI agents) keep funds in their own wallet and dynamically discover compatible endpoints, call them as usual, and automatically pay a microtransaction in USDC or other tokens to

Show HN

2026-04-28Source

Post excerpt:: Every x402 settlement in this repo carries a ZK proof bundle in PAYMENT-RESPONSE: issuer identity, payment settlement, and data integrity, independently verifiable. Live on Base Sepolia. (Recap: x402 is Coinbase's revival of HTTP 402. Server returns 402, client signs an EIP-3009 USDC auth on Base, retries with PAYMENT-SIGNATURE, facilitator settles. Spec: ht

Open Source & Agent Ecosystem

GitHub · MCP / Skill

coinbase/x402

Last commit 2026-11-02

GitHub Stars: ★ 2,577
Forks: 391
License: Apache-2.0
Primary language: JavaScript

Browse peer open-source projects →

Agent, MCP & Developer Integration

Agent Skill CLI / SDK

Integration docs

Ecosystem & integrations:: Solana
Exposed tool capabilities:: Micropayments API Paywall Paywalls for digital content Zero protocol fees Wallet-based identity Automatic API discovery

Browse developer & CLI tools →

Traffic sources

Traffic breakdown

No traffic channel or country breakdown data for this website yet.

View similar products ↓

Search

Domain authority —Domain registered Unknown

No search keyword data for this website yet.

Traffic data: Vaneform

Pricing

Website does not list public plan prices.

Trial: None · Observed 2026-11-12 · Source page

Pages & changes

Tracked since 2025-05-08

Key pages

Weekly snapshots

Changes

Nov 1 · 13d ago
Homepage headline (H1) changed to “x402”Positioning
The best way to accept digital payments.→x402
Nov 1 · 13d ago
Adopted technology: FastlyFeatures
—→Fastly
Nov 1 · 13d ago
Adopted technology: MariaDBFeatures
—→MariaDB
Nov 1 · 13d ago
Adopted technology: MySQLFeatures
—→MySQL
Nov 1 · 13d ago
Removed technology: Next.jsFeatures
Next.js→—
Nov 1 · 13d ago
Removed technology: Next.js App RouterFeatures
Next.js App Router→—

Questions & evidence

What is x402 and what platforms does it support?: x402 is catalogued under Auth, Payments & Billing Infrastructure: x402 is the internet's payment standard. An open standard for internet-native payments that empowers agentic payments at scale. Build a more free and fair internet.. Supported platforms: CLI / SDK.
Is x402 open source?: x402 has a public repository (https://github.com/coinbase/x402) under the Apache-2.0 license, recording 2,577 GitHub stars.Source

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