Honest, side-by-side comparison of 5 free cryptocurrency price APIs. Rate limits, pricing tiers, data quality, and working code examples. No marketing fluff.
Last updated: March 6, 2026. Pricing and limits verified against official documentation.
The numbers that matter when choosing a free crypto price API.
| Provider | Free Tier | Rate Limit | Coins | Signup Required? | HTTPS | CORS |
|---|---|---|---|---|---|---|
| CoinGecko | Freemium | 5-15 req/min | 10,000+ | API key required | Yes | Yes |
| CoinMarketCap | Freemium | 10,000 calls/mo | 5,000+ | Yes (email) | Yes | No |
| CryptoCompare | Generous Free | 100,000 calls/mo | 2,000+ | Yes (email) | Yes | Yes |
| Messari | Freemium | 20 req/min | 500+ | Yes (email) | Yes | Partial |
| Frostbyte This API | 200 Free Credits | 120 req/min | 527+ | No (optional key) | Yes | Yes |
What each API actually gives you on the free tier, with honest pros and cons.
The most comprehensive crypto data provider
Most recognized brand in crypto data
Best free tier for high-volume use
Zero-friction crypto prices for developers
No signup. No API key. Pick a coin and hit "Fetch Price" to see a live response.
Response from GET /v1/defi-trading/prices via Frostbyte API gateway
Get started in under 30 seconds. No API key needed for the first 200 requests.
# Get all prices (527+ coins)
curl https://agent-gateway-kappa.vercel.app/v1/defi-trading/prices
# Get specific coin
curl https://agent-gateway-kappa.vercel.app/v1/defi-trading/prices \
| jq '.prices.BTC'
# With API key (higher limits)
curl -H "x-api-key: YOUR_KEY" \
https://agent-gateway-kappa.vercel.app/v1/defi-trading/prices// Fetch Bitcoin price - no API key needed
const res = await fetch('https://agent-gateway-kappa.vercel.app/v1/defi-trading/prices');
const data = await res.json();
console.log(`BTC: $${data.prices.BTC}`);
console.log(`ETH: $${data.prices.ETH}`);
console.log(`Total coins: ${data.count}`);
// With API key for higher limits
const res2 = await fetch('https://agent-gateway-kappa.vercel.app/v1/defi-trading/prices', {
headers: { 'x-api-key': 'YOUR_KEY' }
});import requests
# No API key needed
r = requests.get('https://agent-gateway-kappa.vercel.app/v1/defi-trading/prices')
data = r.json()
print(f"BTC: ${data['prices']['BTC']}")
print(f"ETH: ${data['prices']['ETH']}")
print(f"Total coins: {data['count']}")
# With API key
r = requests.get(
'https://agent-gateway-kappa.vercel.app/v1/defi-trading/prices',
headers={'x-api-key': 'YOUR_KEY'}
)package main
import (
"encoding/json"
"fmt"
"net/http"
)
func main() {
resp, _ := http.Get("https://agent-gateway-kappa.vercel.app/v1/defi-trading/prices")
defer resp.Body.Close()
var data struct {
Count int `json:"count"`
Prices map[string]string `json:"prices"`
}
json.NewDecoder(resp.Body).Decode(&data)
fmt.Printf("BTC: $%s\nETH: $%s\nCoins: %d\n", data.Prices["BTC"], data.Prices["ETH"], data.Count)
}The right choice depends on your specific use case.
Need prices for top 50-100 coins, updated every few minutes. Low request volume.
Use: Frostbyte or CryptoCompare
Monitoring 5-10 coins every 30-60 seconds. Moderate request volume. Need reliability.
Use: CryptoCompare (100K/mo free) or Frostbyte
Real-time prices for many coins. High request volume. Need historical data.
Use: CoinGecko (paid) or CryptoCompare
Client-side JavaScript. Need CORS. Minimal backend. Quick prototype.
Use: Frostbyte (CORS + no signup)
Giving an AI agent access to crypto prices. Need simple JSON. MCP compatible.
Use: Frostbyte (also available as MCP server)
Need historical OHLCV data, market data for analysis. Volume doesn't matter.
Use: CoinGecko or CryptoCompare
What happens when you outgrow the free tier.
| Provider | Free Tier | First Paid Tier | Cost Per 100K Requests | Billing |
|---|---|---|---|---|
| CoinGecko | Demo (5 req/min) | $129/mo (Analyst) | ~$12.90 (500 req/min) | Monthly subscription |
| CoinMarketCap | 10K calls/mo | $79/mo (Hobbyist) | ~$2.37 (40K calls/mo) | Monthly subscription |
| CryptoCompare | 100K calls/mo | $59/mo (Pro) | ~$1.18 (500K calls/mo) | Monthly subscription |
| Messari | 20 req/min | $299/mo (Pro) | Custom | Monthly subscription |
| Frostbyte | 50 free/day | $1 (50 free requests/day) | $5.00 | Pay-as-you-go (USDC) |
Key insight: If you need less than 200 requests/month, every provider is effectively free. If you need 10K-100K, CryptoCompare offers the best value on a free tier. If you want zero monthly commitment, Frostbyte's pay-as-you-go model lets you pay only for what you use.
curl https://agent-gateway-kappa.vercel.app/v1/defi-trading/prices returns JSON immediately, no signup needed. CoinGecko's documentation is also excellent. Avoid CoinMarketCap for your first project due to the CORS limitation and signup requirement.No signup. No API key. No credit card. Just send a request.
50 free requests/day included. No email required. Pay-as-you-go after that.