Base Sepolia
x402 Protocol × ENS × Base

AI Agents Pay
Per Query in USDC

Decentralized AI marketplace: sellers proxy their API keys, agents & buyers pay per query in USDC. Anonymous, instant, no KYC.

— Proxies
— Models
— Volume
— Txns

Marketplace

Live proxy sellers. Browse models, pricing, and status.

Try a Query

Experience the x402 payment lifecycle. Free models bypass payment.

① Send

Send a query to see the x402 flow in action

Sell Your Credits

Register your proxy, add models, and start earning USDC per query.

Step 1 — Register Proxy
Your API key from OpenRouter, OpenAI, Anthropic, etc. Stored securely.
OpenAI-compatible chat completions endpoint.
Step 2 — Add Custom Model

How It Works

The x402 payment lifecycle in six steps.

1

Mint ENS Subname

Create proxy.you.eth with text records for models & pricing.

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2

Deploy Proxy

Run ChainAgent server with your AI API key.

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3

Buyer Sends Prompt

HTTP POST to /v1/chat/completions. No API key.

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4

402 Response

Server demands USDC payment with amount & recipient.

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5

Pay USDC

Sub-cent transfer on Base. Instant confirmation.

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6

AI Response

Retry with tx proof. Verified → proxied to AI.