Free Crypto Price API — Real-Time Bitcoin, Ethereum & 500+ Token Prices

1 Quick Start — Get BTC Price in 1 Line

Open your terminal and run this:

curl https://agent-gateway-kappa.vercel.app/v1/defi-trading/api/price/BTC

Response:

That's it. No API key, no signup, no OAuth flow. Just a GET request and you have the current Bitcoin price.

Want Ethereum?

curl https://agent-gateway-kappa.vercel.app/v1/defi-trading/api/price/ETH

Want all 229 supported tokens at once?

curl https://agent-gateway-kappa.vercel.app/v1/defi-trading/api/prices

2 3 Free Crypto Price APIs Compared

We actually provide three different crypto price APIs, each optimized for different use cases:

3 API 1: DeFi Trading — 229 Perpetual Markets

The DeFi Trading API wraps the Hyperliquid DEX, providing live prices for 229 perpetual futures markets. Prices update continuously based on actual trading activity.

Get a single token price

curl https://agent-gateway-kappa.vercel.app/v1/defi-trading/api/price/SOL

Get all prices

curl https://agent-gateway-kappa.vercel.app/v1/defi-trading/api/prices

Get market details (leverage, volume)

curl https://agent-gateway-kappa.vercel.app/v1/defi-trading/api/market/BTC

Available endpoints

• GET /api/price/:symbol — Single token price
• GET /api/prices — All 229 token prices
• GET /api/markets — All markets with leverage and details
• GET /api/market/:symbol — Single market details
• GET /api/book/:symbol — Order book
• GET /api/candles/:symbol — OHLCV candlestick data
• GET /api/funding/:symbol — Funding rate

Interactive API docs (Swagger UI)

4 API 2: Crypto Feeds — Real-Time WebSocket Data

The Crypto Feeds API provides real-time streaming prices from Bybit. Get OHLCV data, 24h change percentages, and volume — all from a single REST endpoint.

Get all 38 trading pair prices

curl https://agent-gateway-kappa.vercel.app/v1/crypto-feeds/api/prices

Each price object includes:

• price — Current last traded price
• open / high / low — 24h OHLC data
• volume — 24h trading volume in base currency
• quote_volume — 24h volume in USD
• change_pct — 24h price change percentage

Available endpoints

• GET /api/prices — All 38 trading pairs with OHLCV
• GET /api/prices/:symbol — Single pair (e.g., BTCUSDT)

Interactive API docs (Swagger UI)

5 API 3: On-Chain Analytics — Any Token on Any Chain

Need prices for new or low-cap tokens that aren't on centralized exchanges? The On-Chain Analytics API pulls data from DexScreener and GeckoTerminal, covering tokens on 8 chains including Ethereum, Solana, Base, Polygon, and BSC.

Search for any token

curl "https://agent-gateway-kappa.vercel.app/v1/onchain-analytics/api/search/PEPE"

Get token analytics by contract address

# PEPE token on Ethereum
curl https://agent-gateway-kappa.vercel.app/v1/onchain-analytics/api/token/0x6982508145454ce325ddbe47a25d4ec3d2311933

Get trending tokens

curl https://agent-gateway-kappa.vercel.app/v1/onchain-analytics/api/trending

Available endpoints

• GET /api/tokens/:address — Token analytics (price, volume, liquidity, holders)
• GET /api/search?q=query — Search any token by name or symbol
• GET /api/trending — Currently trending tokens

Interactive API docs (Swagger UI)

6 Full Python Example: Price Tracker

Here's a complete Python script that fetches prices from all three APIs:

import requests

BASE = "https://agent-gateway-kappa.vercel.app/v1/defi-trading"

# Get a single price
resp = requests.get(f"{BASE}/api/price/BTC")
btc = resp.json()
print(f"Bitcoin: ${btc['price']}")

# Get all prices
resp = requests.get(f"{BASE}/api/prices")
prices = resp.json()["prices"]

# Top 10 by price
top10 = sorted(prices.items(), key=lambda x: float(x[1]), reverse=True)[:10]
for symbol, price in top10:
    print(f"  {symbol:<8} ${float(price):>12,.2f}")

# Crypto Feeds — get 24h change data
FEEDS = "https://agent-gateway-kappa.vercel.app/v1/crypto-feeds"
resp = requests.get(f"{FEEDS}/api/prices")
feeds = resp.json()["prices"]

print("\n24h Movers:")
for sym, data in feeds.items():
    change = data.get("change_pct", 0)
    if abs(change) > 3:
        arrow = "+" if change > 0 else ""
        print(f"  {sym:<12} {arrow}{change}%")

7 Node.js Example: Price Monitor

const BASE = "https://agent-gateway-kappa.vercel.app/v1/defi-trading";

// Get Bitcoin price
const btc = await fetch(`${BASE}/api/price/BTC`).then(r => r.json());
console.log(`Bitcoin: $${btc.price}`);

// Get all 229 prices
const { prices } = await fetch(`${BASE}/api/prices`).then(r => r.json());
console.log(`Tracking ${Object.keys(prices).length} tokens`);

// Build a simple price alert
async function checkPrice(symbol, threshold) {
  const { price } = await fetch(`${BASE}/api/price/${symbol}`).then(r => r.json());
  if (parseFloat(price) > threshold) {
    console.log(`ALERT: ${symbol} is at $${price} (above $${threshold})`);
  }
}

await checkPrice("BTC", 100000);
await checkPrice("ETH", 3000);

8 How This Compares to Other Crypto Price APIs

The main advantages of our APIs are: no signup for basic usage, DEX-native data from Hyperliquid and DexScreener, and coverage of on-chain tokens that aren't listed on centralized exchanges.

9 Getting an API Key (Optional)

The free tier gives you 50 requests per day without any key. If you need more, create a free API key in one command:

curl -X POST https://agent-gateway-kappa.vercel.app/v1/defi-trading/api/keys/create

Then use it in your requests:

curl -H "Authorization: Bearer dt_a1b2c3d4..." \
  https://agent-gateway-kappa.vercel.app/v1/defi-trading/api/prices

Need more credits? Top up with USDC on Base — 500 credits per $1, starting from $0.01.