What is x402?
X402 is not merely a token; it functions as a protocol and a payment infrastructure designed for agents, which can include AI agents, API servers, and web services.
This system empowers agents to automatically pay for essential resources such as compute power, inference services, data access, or API calls.
The overarching objective is to establish a decentralized marketplace for "machine-to-machine commerce," facilitating autonomous transactions between AI or machines without the need for human intermediaries.
Core Components of the x402 Ecosystem
The x402 ecosystem is built upon several key components:
1. x402 Token
The x402 token serves as the fundamental unit of payment within the ecosystem.
It is utilized to compensate for services like inference, API calls, and the use of server resources.
2. Facilitators
Facilitators are nodes or intermediaries responsible for processing x402 transactions.
They play a crucial role in ensuring that transfers between agents and servers are fast, cost-effective, and transparent.
3. Bazaar / Marketplace
The Bazaar, or Marketplace, acts as a listing space for various servers, including APIs, AI models, and data services.
Agents can discover, purchase, and immediately utilize these services using x402.
4. x402scan
x402scan, accessible at x402scan.com, functions as a block explorer and an analytics dashboard.
It provides insights into transaction counts, volume, the number of buyers and sellers, top-performing servers, and active facilitators.
Users can leverage x402scan to track which services are being sold, who is purchasing them, and how x402 flows throughout the system.
Key Metrics from x402scan
As of recent data from x402scan:
- •Approximately 449,000 transactions occurred within a 24-hour period.
- •The daily volume was around $360,000.
- •Over 38,000 buyers and 13,000 sellers were active.
- •Popular servers include api.canza.app, 402coin.xyz, and x402.arvos.xyz.
Significance in Web3 and DeFi
If Ethereum is considered the "world computer" for smart contracts, then x402 aims to be the marketplace for AI agents.
It facilitates a decentralized AI-as-a-Service (AIaaS) model, enabling individuals or entities to:
- •List their AI or API services.
- •Allow other agents to instantly purchase and utilize these services.
This development represents a significant advancement in the DeAI (Decentralized AI) movement, integrating blockchain technology, artificial intelligence, and open marketplaces.
Summary
In essence, x402 operates as a payment protocol and marketplace specifically designed for AI agents. x402scan, in turn, serves as the explorer that meticulously tracks all activities within this burgeoning ecosystem.

