CoinMarketCap

CoinMarketCap is the world's most referenced cryptocurrency data platform, tracking prices, market caps, trading volumes, and rankings for thousands of digital assets. It also provides fiat exchange rates, exchange-level data, and category classifications.

Connecting CoinMarketCap to Coupler.io lets you:

• Monitor crypto prices automatically — pull live or historical quotes into spreadsheets or dashboards without manual copy-pasting
• Track market rankings — keep tabs on the latest listings and market cap movements across assets
• Combine with other financial data — join crypto quotes with fiat rates or exchange data using Coupler.io's Join and Aggregate transformations
• Feed AI tools — send market data directly to ChatGPT, Claude, Gemini, or other AI destinations for analysis and commentary

Prerequisites

• A CoinMarketCap account with an active API key (available on the CoinMarketCap Developer Portal)
• The free Basic plan provides access to the core endpoints used by Coupler.io; higher-tier plans unlock historical data

Historical OHLCV data requires a paid CoinMarketCap API plan. The free tier covers latest market data only.

Quick start

Start with the Listings entity to get a ranked overview of all cryptocurrencies, then add a Quotes entity filtered to your specific symbols for focused tracking.

1

Create a new data flow in Coupler.io. Go to your Coupler.io workspace and click Add data flow. Search for and select CoinMarketCap as your source.

2

Enter your CoinMarketCap API key. In the source settings, paste your API key from the CoinMarketCap Developer Portal into the API key field.

3

Select an entity. Choose from Categories, Listings, Quotes, Fiats, or Exchanges depending on the data you need.

4

Configure data type and symbols. Set the data type to latest or historical. If you selected Quotes, enter the cryptocurrency symbols you want to track (one per line, e.g., BTC, ETH, SOL).

5

Choose your destination. Select where to send the data — Google Sheets, Excel, BigQuery, Looker Studio, or an AI destination like ChatGPT, Claude, or Gemini.

6

Run the data flow. Click Run to execute a manual sync and confirm your data loads correctly before setting up a schedule.

Entities overview

Entity	Description
Listings	Full ranked list of cryptocurrencies with price, market cap, volume, and supply data
Quotes	Current market quotes for specific coins — filter by symbol for targeted tracking
Categories	Thematic groupings of cryptocurrencies (e.g., DeFi, Layer 1, Gaming)
Fiats	Fiat currency reference data and exchange rates
Exchanges	Exchange-level market data including volume and trading pairs