CRYPTO MARKET DATA

Real-time
Multi-DEX
Aggregated Prices

Access aggregated prices, arbitrage opportunities, and risk metrics from 8+ DEXes. Pay per request with USDC on Base via x402 protocol.

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LIVE DEMO

GET /price/ETH

─────────────────────

"symbol": "ETH",
  "price_usd": 2450.32,
  "change_24h": +2.45%,
  "sources": 3,
  "spread": 0.07%,
  "volume_24h": "$12.5M"
Cost: $0.01 USDCLatency: <100ms

FEATURES

Everything you need for crypto data

Multi-DEX Aggregation

Volume-weighted prices from Uniswap, SushiSwap, Curve, BaseSwap, and 4 more DEXes.

Arbitrage Detection

Real-time cross-DEX arbitrage opportunities with profit calculations and gas estimates.

Risk Metrics

Volatility, VaR, Sharpe ratio, and sentiment analysis for informed trading decisions.

Real-time Data

30-second cache TTL, 100 req/min rate limit. Fresh data for high-frequency trading.

Historical OHLCV

Candlestick data with 1m, 5m, 1h, 1d intervals. Up to 1 year history.

Price Alerts

Webhook notifications when price hits your target. Perfect for trading bots.

PRICING

Pay-as-you-go with x402

No subscriptions, no commitments. Pay per request with USDC on Base. Your wallet, your data.

$0.01per request
  • No API key required
  • Pay with USDC on Base
  • Auto-payment via x402 protocol
  • 100 requests/minute rate limit
  • 30-second cache (free retries)
Get Started →

Arbitrage endpoint

$0.03

per request

Historical data

$0.02

per request

Free endpoints

$0.00

/health, /

INTEGRATION

Get started in 5 minutes

# Install x402 client
pip install x402-client httpx

# Initialize with your wallet
from x402.client import X402Client
from eth_account import Account

wallet = Account.from_key("0x...")
client = X402Client(wallet=wallet)

# Make request (auto-payment)
response = client.get("https://api.foursec.xyz/price/ETH")
data = response.json()

print("ETH: $2450.32")
# Output: ETH: $2450.32

How x402 Works

  1. 1.Your app requests data from API
  2. 2.API returns 402 Payment Required with payment details
  3. 3.x402 client signs USDC transfer from your wallet
  4. 4.Client retries request with payment proof
  5. 5.API verifies payment and returns data

💡 Pro tip:x402 client SDK handles all payment logic automatically. Just call .get() and it works!

STATS

Trusted by developers

150K+

API Requests

99.9%

Uptime

<100ms

Latency

8

DEXes

Ready to get started?

Start using 4SEC API today. No credit card, no signup form. Just connect your wallet and pay as you go.

Get Started Free →Read Documentation

✓ Free tier available

✓ No credit card required

✓ Pay with USDC on Base