WebAI3

Introduction

What WebAI3 is, what it does, and why it exists.

What is WebAI3?

WebAI3 is an AI inference platform where users pay per request using USDC on Ethereum. It is built around the x402 payment protocol — an open HTTP extension that allows web clients to pay for resources before they are served, using on-chain stablecoin transfers as the settlement mechanism.

The platform has two distinct products:

Product What it does
Inference App (webai3_web) Users connect a wallet, authenticate via SIWE, and run AI models (text-to-image, text-to-text, text-to-sound). Each request is paid in USDC before inference runs.
Presale (webai3-landing) Token presale for AIC — the protocol's governance and utility token. Buyers contribute USDC across 7 phases at escalating prices and receive vested AIC after TGE.

The two products are connected by the AIC token: presale buyers receive AIC, which can be staked in the inference app to unlock discounts on inference costs.

Why x402?

The x402 protocol makes micropayments a native part of HTTP. Instead of requiring subscriptions or prepaid credits, the server issues a 402 Payment Required response that describes exactly what USDC amount is needed and to which address. The client signs an EIP-3009 transferWithAuthorization message off-chain, which gets verified and settled by a facilitator before compute runs.

This enables agent-native payments: autonomous AI software can hold USDC and pay for compute without human interaction — the entire payment loop is machine-readable and requires no accounts or API keys.

The AIC Token

AIC (WebAI3Token) is a fixed-supply ERC-20 governance token deployed on Ethereum. Key properties:

  • Supply: 1,000,000,000 AIC — minted once at deployment, no further minting
  • Governance: ERC20Votes — holders can delegate and vote on protocol parameters
  • Utility: Staking AIC in the inference app reduces the per-second inference rate
  • Presale: 500M AIC (50% of supply) sold across 7 phases at $0.010–$0.070 per token

How the Four Projects Fit Together

┌─────────────────────────────────────────┐
│           Ethereum Blockchain            │
│  USDC · AIC Token · x402 Facilitator   │
└──────┬──────────┬──────────┬────────────┘
       │          │          │
       ▼          ▼          ▼
 webai3_web   webai3-     webai3-
 Inference    landing     token
 App + API    Marketing   Smart
              + Presale   Contracts
  • webai3_web — inference payments via x402, reads AIC balance for staking discounts
  • webai3-landing — presale frontend, reads presale contract state on-chain
  • webai3_token — all 8 smart contracts: WebAI3Token, WebAI3Presale, 5 vaults, ClaimModule
  • webai3-dashboard — read-only admin view of presale and vault state (not covered in user docs)

Networks

Network Chain ID USDC Address Use
Ethereum Mainnet 1 0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48 Production
Ethereum Sepolia 11155111 0x1c7D4B196Cb0C7B01d743Fbc6116a902379C7238 Staging
Anvil (local) 31337 Fork of Sepolia Development

The x402 facilitator is operated by RelAI at https://facilitator.x402.fi and supports eip155:1 (Ethereum mainnet). Sepolia testing uses Anvil in local dev mode where payment settlement is mocked.

Architecture