Aether

Autonomous Agent Ecosystem SDK for Solana

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Aether is a production-ready SDK for building autonomous agent-to-agent systems on Solana. It integrates the x402 Payment Protocol to enable intelligent agent communication and micropayment settlement.

🌟 Vision

Aether enables autonomous AI agents to orchestrate complex workflows on Solana—negotiating contracts, processing micropayments, and making intelligent decisions—all without human intervention.

Core Capabilities

• x402 Protocol - HTTP 402 payment standard for autonomous API payments
• Solana Integration - High-speed, low-cost blockchain infrastructure
• A2A Protocol - Standardized agent-to-agent communication
• USDC Payments - Stable, predictable pricing for agent services

🎯 Features

Autonomous Workflows

• Agent Negotiation: Autonomous term negotiation between agents
• Intelligent Verification: LLM-powered decision making
• Automated Settlement: x402-based micropayments in milliseconds
• Zero Human Intervention: Fully autonomous agent transactions

Solana Performance

• 400ms Finality: Lightning-fast transaction confirmation
• $0.00025 Transaction Costs: Economical micropayments
• Native USDC: Stable pricing without volatility
• SPL Token Support: Extensible payment infrastructure

Agent Framework

• SettlementAgent: Executes x402 payments and settlement on-chain
• x402 Facilitator: Payment verification and USDC transfers
• Protocol Support: A2A and AP2 protocol implementations

📦 Installation

npm install aether-agent-sdk

🚀 Quick Start

import { SettlementAgent } from 'aether-agent-sdk'

const agent = new SettlementAgent()
await agent.init()

const paymentHeader = await agent.createSignedPayment(
  'merchant_wallet_address',
  1.0
)

📚 Documentation

• Setup Guide - Installation and configuration
• API Reference - Complete API documentation
• Usage Guide - Integration examples
• x402 Integration - x402 payment protocol guide

🎬 Demo

See the complete working demo with AI weather agents:

👉 github.com/AETHER-SDK/aether-sdk-demo

The demo shows:

• x402 payment-gated weather API
• AI-powered customer agent
• Real USDC settlements on Solana
• Full comparison with simple HTTP agents

⚙️ Configuration

Create a .env file:

SOLANA_NETWORK=devnet
SOLANA_RPC_URL=https://api.devnet.solana.com
# Preferred: path to keypair file generated by solana-keygen
AGENT_WALLET_PATH=./agent-wallet.json
# Or base58/JSON in SOLANA_WALLET / legacy AGENT_PRIVATE_KEY
SOLANA_WALLET=
# AGENT_PRIVATE_KEY=
MERCHANT_WALLET_ADDRESS=merchant_wallet
# Devnet USDC mint by default (mainnet: EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v)
USDC_MINT=4zMMC9srt5Ri5X14GAgXhaHii3GnPAEERYPJgZJDncDU
DEFAULT_PAYMENT_AMOUNT_USDC=1.0

🏗️ Architecture

┌─────────────────────────────────────────┐
│   SDK Entry Point (src/index.ts)        │
├─────────────────────────────────────────┤
│   Agents Layer                           │
│   └─ SettlementAgent                    │
├─────────────────────────────────────────┤
│   x402 Facilitator                       │
│   └─ X402FacilitatorServer              │
├─────────────────────────────────────────┤
│   Protocols Layer                        │
│   ├─ A2AProtocol                        │
│   └─ AP2Protocol                        │
├─────────────────────────────────────────┤
│   Solana Integration                    │
│   ├─ @solana/web3.js                    │
│   └─ @solana/spl-token                  │
└─────────────────────────────────────────┘

🔑 Key Features

x402 Payment Protocol

• HTTP 402 (Payment Required) implementation
• Autonomous payment authorization and verification
• Sub-second settlement on Solana
• USDC micropayments with stable pricing

Agent-to-Agent Communication

• JSON-RPC based A2A protocol
• Standardized message formats
• Async communication patterns
• Task management and tracking

Production Ready

• TypeScript with full type safety
• Modular exports for tree-shaking
• Comprehensive error handling
• Extensive logging and debugging

🤝 Contributing

Contributions are welcome! Please feel free to submit a Pull Request.

📄 License

MIT License - see LICENSE for details.

🔗 Links

• GitHub: github.com/AETHER-SDK/aether-sdk
• Documentation: docs/
• x402 Protocol: solana.com/x402
• Solana Docs: solana.com/developers

👥 Author

4n0nn43x

Aether - Autonomous agent payments on Solana.