Finally, a way to pay for AI that actually makes sense. Built on Solana, powered by X402.
Chat with our AI agent - $0.0001 per message
Real businesses, real use cases, real impact
Subscriptions are broken. You pay $20/month whether you use the service once or a thousand times. That's why most people have subscriptions they never touch.
Auto402 flips the model. Your customers pay exactly for what they consume nothing more, nothing less. One question? One cent. Ten questions? Ten cents. Used the service once this month? You paid for once.
No monthly fees. No unused credits expiring. No guilt about wasted money. Just honest, transparent pricing where everyone wins.
Let AI handle the first line. Customers get instant answers. You save on support costs. Everyone wins.
Add Auto402 to your website. Visitors get real AI help without signing up. Simple.
Building an AI API? Stop worrying about rate limits and pricing tiers. Charge per request, automatically.
NPCs that talk back. AI companions. Dynamic storylines. Charge players micro-amounts for premium AI interactions.
No app store fees on micropayments. Users pay directly through their Solana wallet. You keep more of what you earn.
Tutoring bots, homework help, practice questions. Students pay pennies per session instead of expensive monthly plans.
Why should someone pay for a whole month if they only need your AI once? With Auto402, they pay for exactly what they use. Fair for them. Efficient for you. Simple.
Pay only for what you use, down to fractions of a cent
Access cutting edge AI models with transparent pricing
Built on Solana blockchain for fast, secure transactions
Monitor usage and costs in real-time
Simple SDK to integrate into any application
Native implementation of payment required status code
Everything you need to integrate Auto402 into your application
npm install @solana/web3.js @solana/wallet-adapter-react
npm install @auto402/sdkimport { Auto402 } from '@auto402/sdk';
const auto402 = new Auto402({
network: 'devnet', // or 'mainnet-beta'
apiKey: 'your-api-key',
});const session = await auto402.createSession({
contentType: 'chat',
pricePerMessage: 0.0001,
wallet: walletPublicKey,
});
// Start session
await session.start();
// Send message
await session.sendMessage('Hello AI!');
// Stop session
await session.stop();The HTTP 402 Payment Required status code is reserved for future use in digital payment systems. Auto402 implements this protocol for micropayment-based content access.
HTTP/1.1 402 Payment Required
Content-Type: application/json
{
"price": 0.0001,
"currency": "USD",
"paymentAddress": "SoLaNa...",
"resource": "/api/chat/message"
}import { useWallet } from '@solana/wallet-adapter-react';
function App() {
const { publicKey, connected } = useWallet();
if (!connected) {
return <WalletConnectButton />;
}
return <Auto402Provider wallet={publicKey}>
<YourApp />
</Auto402Provider>;
}const session = await auto402.createSession({
contentType: 'chat', // 'chat', 'video', 'api'
pricePerMessage: 0.0001, // Price in USD
wallet: walletPublicKey, // User's wallet
metadata: { // Optional
sessionName: 'AI Chat',
tags: ['demo', 'test']
}
});// Listen for payment events
session.on('payment', (payment) => {
console.log('Payment processed:', payment);
});
// Listen for insufficient funds
session.on('error', (error) => {
if (error.code === 'INSUFFICIENT_FUNDS') {
// Prompt user to add funds
}
});class Auto402 {
constructor(config: Auto402Config)
createSession(options: SessionOptions): Promise<Session>
getBalance(wallet: PublicKey): Promise<number>
getTransactionHistory(wallet: PublicKey): Promise<Transaction[]>
}class Session {
start(): Promise<void>
stop(): Promise<void>
sendMessage(message: string): Promise<Response>
getCurrentCost(): number
on(event: string, callback: Function): void
}interface Auto402Config {
network: 'devnet' | 'mainnet-beta';
apiKey: string;
endpoint?: string;
}
interface SessionOptions {
contentType: 'chat' | 'video' | 'api';
pricePerMessage?: number;
pricePerSecond?: number;
wallet: PublicKey;
metadata?: Record<string, any>;
}Choose your Solana wallet to connect. Make sure your wallet extension is installed and unlocked.
Connect with Phantom wallet
Connect with Solflare wallet
Connect with Slope wallet