x402
x402

x402

An open-source, web-native payment protocol enabling autonomous AI agents to transact over HTTP.

2025ActiveSan Francisco, United States

Check the tech stack behind x402.org. Find a founder email at x402.org.

About

x402 is an open, neutral standard for internet-native payments that natively enables payments between clients and servers using HTTP 402. It aims to create win-win economies for agentic payments at scale, empowering a more free and fair internet by allowing any request to require payment without accounts or fees. This standard serves developers and AI agents looking for a frictionless, instant, and decentralized way to transact online. Teams look it up for Fintech, Blockchain, AI.

Frequently asked

What does x402 do?

x402 is a Fintech company that offers Platform. Teams look it up for Blockchain, AI, Payments. It is based in San Francisco, United States and was founded in 2025. Compare it on funding, headcount, reviews and nearby alternatives rather than the marketing line alone.

Where is x402 headquartered?

x402 is headquartered in San Francisco, United States.

When was x402 founded?

x402 was founded in 2025.

What industry does x402 operate in?

x402 operates in Fintech, Blockchain, AI, Payments, Agentic AI.

Scores
Measured, not editorial
Ahrefs DR
81/100

Strength of the site’s backlink profile, on Ahrefs’ 0-100 Domain Rating scale. Licensed third-party data, not our opinion.

Agent Readiness
62/100

How well an AI agent can read and use this site: structured data, clean markup, and whether key facts are reachable without running JavaScript. We scan the live site.

Site Speed
49/100

Google PageSpeed mobile performance for the company’s own site. Measured by Google, not by us.

Add first review