Best Free Crypto APIs for Developers

The best free crypto APIs in 2026 — CoinGecko, CoinMarketCap, Etherscan, and others. What each covers, rate limits, and when you need a paid tier.

Updated June 2026 · Reviewed by the PipeFlare team

A free crypto API gives developers real-time and historical price data, on-chain information, or market data without upfront cost

Free tiers cover most prototyping and small-scale needs — rate limits are the main constraint before paid tiers become necessary

Read the official source →

About free crypto apis

A free crypto API gives developers access to real-time and historical cryptocurrency price data, on-chain information, or market data without an upfront cost. The major free options in 2026 are CoinGecko (30 calls per minute on the public API), CoinMarketCap (10,000 calls per day on the free tier), Etherscan (5 calls per second on the free tier), and the Binance REST API (free for market data with rate limits by weight). Most free tiers are sufficient for prototyping, personal projects, and low-traffic applications. High-frequency trading, bulk historical data, and on-chain analytics typically require paid tiers.

How it actually works

Crypto APIs fall into three categories. Price and market data APIs — CoinGecko, CoinMarketCap, CryptoCompare — return current prices, market caps, trading volumes, and historical OHLCV (open, high, low, close, volume) data. Exchange APIs — Binance, Coinbase Advanced, Kraken — return real-time order books, trade history, and in authenticated form allow order placement. On-chain / blockchain APIs — Etherscan, Alchemy, Infura, QuickNode — let you query wallet balances, transaction histories, smart contract state, and decoded logs from the blockchain. Free tiers impose rate limits to control costs. Rate limits are usually measured in calls per minute or day and may also impose a monthly cap. CoinGecko's Demo tier allows 30 calls per minute. CoinMarketCap's Basic free tier allows 10,000 API calls per month (not per day). Etherscan's free plan allows 5 calls per second and 100,000 calls per day. Alchemy and Infura offer free compute units for Ethereum RPC calls.

Start here

1For price data in a prototype, start with the CoinGecko public API — no API key required for basic endpoints, simple JSON responses, and generous documentation.
2Register for a free API key on the platform you need — CoinMarketCap, Etherscan, and Alchemy all offer free tiers with registration.
3Cache responses locally to stay within rate limits — most price data does not need to be fetched more than once per minute.
4Plan your upgrade path before launch: estimate your call volume at scale and check whether the next paid tier covers it or whether you need a different data provider.

Strengths

CoinGecko's free public API requires no key and covers prices, market caps, and basic on-chain data for thousands of tokens.
Free exchange APIs (Binance, Coinbase) include real-time order book and trade data that would cost significant money from traditional financial data providers.
On-chain APIs like Etherscan let you inspect any wallet or contract on Ethereum for free, enabling auditing, analytics, and portfolio tools without managing your own node.

Common misunderstandings

Rate limits on free tiers are low enough that any production application with real user traffic will hit them quickly.
Historical data beyond 365 days is typically paywalled on most price APIs — CoinGecko Pro and CoinMarketCap paid tiers unlock longer windows.
Glassnode and Nansen — the leading on-chain analytics platforms — are substantially paid-only; free on-chain data is limited to raw transaction queries via Etherscan or RPC nodes.

Common questions

What is the best free crypto price API?

CoinGecko is the most commonly used free crypto price API for developers. Its public API (no key required) returns real-time prices, market caps, volumes, and historical data for thousands of coins. The rate limit is 30 calls per minute. CoinMarketCap's free Basic tier (API key required) offers 10,000 calls per month. For simple projects, CoinGecko is usually the better starting point because it requires no signup.

Does Etherscan have a free API?

Yes. Etherscan offers a free API tier that allows up to 5 calls per second and 100,000 calls per day after free registration for an API key. The free tier covers balance lookups, transaction history, ERC-20 transfers, block data, and contract ABI fetching. Pro features like advanced filtering and extended historical exports require a paid plan.

What is the Binance API rate limit for the free tier?

The Binance REST API uses a weight system rather than a simple calls-per-minute limit. Each endpoint has a request weight, and the default rate limit is 1,200 weight units per minute per IP address. Market data endpoints — prices, order books, klines — are free and public with no API key required. Trading endpoints require authentication. The WebSocket API has separate connection and message limits.

Can I get free on-chain data beyond Etherscan?

Yes. Alchemy and Infura both offer free Ethereum RPC tiers that let you query balances, transactions, and call smart contract view functions — essentially a free Ethereum node endpoint. Alchemy's free tier includes 300 million compute units per month. The Graph Protocol lets you query indexed blockchain data via GraphQL for free on public subgraphs. Raw Ethereum data without indexing is free via any public RPC but requires you to parse the data yourself.

Are there free crypto APIs for news data?

CoinGecko's API includes a news endpoint. CryptoPanic offers a free API tier for crypto news aggregation. CoinDesk has a content API. Most news APIs in crypto have limited free tiers — typically a few hundred calls per day — and paywalled historical archives. For research, many developers scrape public RSS feeds from CoinDesk, The Block, and Decrypt, though this is subject to each site's terms of service.

Sources

Ready to put this into practice?

Exchange sign-up bonuses pay both you and a referrer after a qualifying trade.

See bonuses →