Is the free CoinGecko plan enough for an indie project?

For a personal project or prototype, yes. The Demo plan (no key, 10–30 calls/min) is sufficient for displaying prices on a dashboard, a portfolio tracker with a polling interval of 2+ minutes, or an alert system that checks hourly. It becomes a bottleneck if you need to poll frequently (sub-minute), query many coins simultaneously, or need guaranteed uptime SLAs. At that point, the Pro plan starts at $129/month.

Which free crypto API is fastest?

Binance Public API is consistently the fastest for BTC/ETH prices — their infrastructure handles 1,200 req/min and responses typically come back in under 50ms. This makes sense: they're the largest exchange by volume and their market data endpoints are critical to their own trading platform. CoinGecko is slower (100–300ms typical) because it aggregates across 800+ exchanges.

Can I use these in production?

CoinPaprika (25,000 calls/month, no key) and Blockchain.com Data API (unlimited, no key) are the most production-friendly free options — both have stable endpoints and no stated rate limits that would kill a low-traffic production app. CoinGecko's Demo plan is production-usable with polling intervals of 2+ minutes. Binance and Kraken public endpoints have no key requirement and high rate limits, but they only cover their exchange's traded pairs.

Free Crypto Price APIs Compared: CoinGecko, CoinPaprika, and the Open Mempool

April 8, 2026 · cryptocurrency

Three free crypto data APIs, three different philosophies. Here's what each is best at.

CoinGecko, CoinPaprika, and Mempool.space each solve a different problem. CoinGecko is the broadest aggregator; CoinPaprika has the cleanest no-key free tier for portfolio data; Mempool.space is Bitcoin-only but offers real-time mempool and fee data you won't find anywhere else.

We track 12 cryptocurrency APIs on FreeAPI.watch. Here's how the three main free options compare, and when to reach for the others.

CoinGecko: Broadest Coverage, Rate-Limited Demo Plan

CoinGecko covers 10,000+ coins and 800+ exchanges. Their Demo plan (no API key required) gives you roughly 10–30 calls/minute. The main endpoints you'll use:

The `/simple/price` endpoint lets you query multiple coins in a single call: `GET https://api.coingecko.com/api/v3/simple/price?ids=bitcoin,ethereum,solana&vs_currencies=usd,eur`. This is important — batch your queries to stay under the rate limit.

The Demo plan has no stated monthly cap, but they do enforce rate limits and will return HTTP 429 if you exceed them. In practice, for a polling interval of 60+ seconds for under 50 coins, you'll rarely hit the limit. For a hackathon project or portfolio dashboard, the Demo plan is completely sufficient.

See /coingecko for current status and /tutorial/coingecko for a working JavaScript/Python implementation with rate limit handling.

CoinPaprika: Cleanest No-Key Free Tier

CoinPaprika is less well-known than CoinGecko but arguably has a better free tier for small projects: 25,000 calls/month, no key, no credit card. The monthly cap is a more predictable constraint than a per-minute rate limit — you can plan around it.

The data covers 2,000+ coins with price, market cap, volume, and supply data. Historical data (OHLCV) is available on the free tier — CoinGecko requires a paid plan for most historical queries. The API design is clean and well-documented at api.coinpaprika.com.

See /coinpaprika for live status and free-tier details. For most 'show me the top 100 coins with price and market cap' use cases, CoinPaprika's free tier is more than enough.

Mempool.space: Bitcoin-Specific, Real-Time, No Key

Mempool.space is not a price API — it's a Bitcoin mempool and blockchain explorer API. If you're building something Bitcoin-specific (wallet fee estimator, block explorer, transaction tracker), it's the best free option by a significant margin.

The `/api/v1/fees/recommended` endpoint returns current fee estimates in satoshis/vbyte for different confirmation targets: fastest (next block), half-hour, hour. This is the data you need to suggest transaction fees to users. It's real-time, unlimited, and no key required.

Mempool.space is open-source and self-hostable — you can run your own instance against your own Bitcoin node if you need higher reliability than the public API. See /mempool-space for current status.

The Others Worth Knowing

Binance Public API (1,200 req/min, no key) and Kraken Public API (unlimited, no key) are exchange-specific but excellent if you only care about the coins they list — which covers all major assets. Coinbase Advanced Trade API public endpoints (10 calls/sec, no key) are similar.

CoinLore (unlimited, no key) covers 10,000+ coins but the data updates less frequently than CoinGecko. Blockchain.com Data API (unlimited, no key) is Bitcoin-only but provides comprehensive blockchain statistics.

CoinMarketCap requires a key for even basic queries but gives 10,000 calls/month free — acceptable if you need the CMC rankings specifically (some users prefer CMC's methodology over CoinGecko's). See /category/cryptocurrency for the full ranked list.