x402 - DeFi Data API

DeFi API service providing funding rates and crypto market data via x402 payment protocol

A production-grade API that aggregates funding rates, arbitrage opportunities, and market data from 12+ exchanges. Built with FastAPI and designed for high-frequency trading applications.

Features

• Multi-Exchange Integration: Real-time data from 12 exchanges (Binance, Kraken, KuCoin, OKX, dYdX, Hyperliquid, and more)
• Funding Rate Arbitrage: Identify funding rate spreads across exchanges
• x402 Payment Protocol: Built-in micropayment support for API access
• Production Infrastructure: Redis caching, Prometheus metrics, OpenTelemetry tracing
• Rate Limiting: Smart rate limiting per exchange
• Alerting: Telegram notifications for arbitrage opportunities

Supported Exchanges

Exchange	Funding Rates	Spot	Perps
Binance	✅	✅	✅
Kraken	✅	✅	✅
KuCoin	✅	✅	✅
OKX	✅	✅	✅
dYdX	✅	-	✅
Hyperliquid	✅	-	✅
Gate.io	✅	✅	✅
Bitget	✅	✅	✅
MEXC	✅	✅	✅
GMX	✅	-	✅
Vertex	✅	-	✅
Drift	✅	-	✅

Quick Start

# Clone the repository
git clone https://github.com/yourusername/x402.git
cd x402

# Set up environment
cp .env.example .env
# Edit .env with your API keys

# Install dependencies
pip install -r requirements.txt

# Run the API
uvicorn main:app --reload

API Endpoints

GET /funding-rates           # All funding rates across exchanges
GET /funding-rates/{symbol}  # Funding rates for specific symbol
GET /arbitrage               # Current arbitrage opportunities
GET /health                  # Health check

Architecture

┌─────────────────┐     ┌──────────────────┐
│  FastAPI App    │────▶│  Redis Cache     │
└────────┬────────┘     └──────────────────┘
         │
    ┌────┴────┐
    │         │
┌───▼───┐ ┌───▼───┐
│Exchange│ │Exchange│  ... (12 exchanges)
│Adapters│ │Adapters│
└───────┘ └───────┘

Environment Variables

See .env.example for all configuration options.

License

MIT