# x402 Watch

> A tracker for x402 — the open, stablecoin-native payment standard for AI agents,
> based on HTTP 402. Covers how it works, adoption metrics, who is shipping it, and
> how it compares to AP2 (Google) and ACP (Stripe/OpenAI).

## For AI agents
- Machine-readable data: /api/x402.json

## Key pages
- Home: /
- Companion index of the whole agentic-finance stack: https://index.agiscorecard.com/

## What this is
Independent editorial tracker, refreshed on update. x402 is a project of the
Linux Foundation; this site is not affiliated.