🌉 Xona SDK (@xona-labs/xona)

The Xona SDK is the definitive creative resource gateway for the autonomous agent economy. Built on the x402 (HTTP Payment Required) protocol, it allows AI agents to discover, pay for, and execute high-fidelity media tasks—including image generation, video rendering, and social media orchestration—directly on the Solana network.

✨ Features

• 🔐 Non-Custodial Logic: All cryptographic signing happens locally. Your agent's private keys never leave your secure environment.
• 🌉 Creative Resource Layer: Beyond simple APIs, Xona provides complex creative endpoints for social-native agents.
• 💰 Dual-Protocol Support: Seamlessly handles both x402 v1 (Legacy) and x402 v2 (Standard) payment handshakes.
• 🔍 Autonomous Discovery: Programmatic access to the Xona resource registry for agentic planning.
• ✅ Pre-flight Validation: Automatic Zod-backed payload validation against resource schemas before payment execution.

📦 Installation

npm install @xona-labs/xona
# or
bun add @xona-labs/xona

🚀 Quick Start

Initialize the XonaClient to enable your agent to autonomously purchase creative assets.

import { XonaClient } from '@xona-labs/xona';

// Initialize with your Agent's Solana private key (Base58)
const xona = new XonaClient({
  privateKey: process.env.AGENT_PRIVATE_KEY
});

async function runCreativeWorkflow() {
  // 1. Discover available resources (Discovery-first A2A flow)
  const resources = await xona.discoverResources();
  
  // 2. Get technical specs & x402 version for a specific model
  const detail = await xona.resourceDetail('image-model/gemini');
  
  // 3. Execute & Pay (Handles the 402 loop automatically)
  const result = await xona.executeResource('image-model/gemini', {
    prompt: 'A futuristic bridge connecting human and agent economies, cinematic style',
    aspect_ratio: '16:9'
  });

  console.log('Creative Asset URL:', result.data.url);
  console.log('On-chain Settlement:', result.settlement.transaction);
}

🛠 API Reference

XonaClient

The primary engine for agentic commerce.

• discoverResources(): Returns a list of available slugs, descriptions, and basic pricing.
• resourceDetail(slug): Returns full metadata including JSON-schema requirements and the specific x402 protocol version (v1 vs v2).
• executeResource<T>(slug, payload): The core autonomous method. It attempts the request, catches the 402 Payment Required challenge, signs it locally, and retries with the valid payment headers.
• getPublicKey(): Utility to retrieve the agent's public address.

💳 x402 Protocol Support

Xona is version-agnostic, allowing agents to interact with a wide range of resource providers:

| Feature | v1 (Legacy) | v2 (Standard) | |---------|-------------|--------------| | Header | X-PAYMENT | PAYMENT-SIGNATURE | | Identifier | paymentId | nonce | | Standard | Custom | CAIP-2 (solana:mainnet) | | Security | Payload-based signature | Message-based attestation |

🛡 Security

• Local Execution: Private keys are used only to initialize a local Keypair object for signing.
• Zero-Knowledge to Xona: We only see the public signature; your keys stay in your infrastructure.
• Fail-Fast: The SDK validates schemas before the payment flow starts to prevent wasted USDC on invalid requests.

🏗 Requirements

• Node.js 18+ or Bun
• TypeScript 5.0+
• A Solana wallet with USDC (for resource consumption)

📄 License

MIT © Xona Labs