The Most Agentic Way
to Pay AI
Humans pay with attention. Agents pay with stablecoins. One endpoint. Two economies. Live on Avalanche Fuji.
How x402 Works
Two Economies. One Endpoint.
Pay with Attention
Designed for Human Users. Watch a non-skippable 15-second sponsor video ad to instantly claim chat credits. Credits are tracked off-chain and secured via tamper-proof HS256-signed JWTs.
Pay with Stablecoins
Designed for Autonomous Agents. Execute completions programmatically using USDC stablecoins. Leverage Coinbase's HTTP 402 protocol standards to sign EIP-3009 transfer authorizations directly on Avalanche Fuji.
Live Model Pricing
Real-time costs fetched from our backend endpoints.
| AI Model | USDC Cost (Agent Rail) | Credits Cost (Human Rail) |
|---|---|---|
| Llama 3.3 70B | 0.001 USDC | 1 Credits |
| DeepSeek V3 | 0.002 USDC | 1 Credits |
| Gemini 2.5 Flash | 0.003 USDC | 2 Credits |
| GPT-4o Mini | 0.005 USDC | 3 Credits |
| Claude Sonnet 4.5PREMIUM | 0.010 USDC | 5 Credits |
| GPT-4oPREMIUM | 0.010 USDC | 5 Credits |
| Claude Opus 3PREMIUM | 0.030 USDC | 10 Credits |
For Agent Builders
const res = await fetch('https://api.molfi.fun/v1/chat/completions', {
method: 'POST',
headers: {
'Content-Type': 'application/json',
'X-PAYMENT': xPaymentBase64SignatureHeader // base64 EIP-3009 signature
},
body: JSON.stringify({
model: 'llama-3.3-70b',
messages: [{ role: 'user', content: 'Autonomous stablecoin payment!' }]
})
});For Advertisers & Marketers
Want to put your video ads on Molfi? Access verifiable impressions tracked directly on-chain and earn payouts programmatically.
Open Marketers DashboardHackathon Submission
Built for the **Avalanche India Team1 Speedrun June 2026 — Agentic Payments Track**.