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CoinGecko API

The de-facto free crypto price API; keyless public endpoints plus a no-card demo key

CoinGecko provides cryptocurrency prices, market caps, volumes, OHLC, historical data, and metadata across thousands of coins and exchanges. The public API works with no key for light use, and a free Demo plan key (no credit card) raises limits. It is one of the most widely used crypto data sources for dashboards and bots.

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Free tier

Free Demo plan: 10,000 calls/month, no credit card. Keyless public API also available for light, throttled use.

Rate limits

Demo key: 100 calls/min, 10k calls/month (per current official docs). Keyless public API is more aggressively throttled (subject to change) and 429s under load.

Auth

API key

Base URL

https://api.coingecko.com/api/v3

What you'd build with it

Pull live crypto prices into an AI agent that answers portfolio or market questions
Build a Claude Skill that summarizes a coin's market data and recent trend
Power a daily crypto market digest automation
Enrich a watchlist with market cap, volume and 24h change

Key endpoints

GET/simple/price?ids=bitcoin&vs_currencies=usdCurrent price of one or more coins in given fiat/crypto currencies
GET/coins/markets?vs_currency=usdRanked market data (price, mcap, volume, 24h change) for all coins
GET/coins/{id}/market_chart?vs_currency=usd&days=30Historical price, market cap and volume time series
GET/coins/{id}Full metadata, links, and market data for a single coin
GET/search/trendingCurrently trending coins and NFTs on CoinGecko

Members

Members get the runnable recipe

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