Simple Dart wrapper for the CoinGecko API

Table of contents

• Installation
• Usage
• Documentation
  • Query results
  • Sections
    • ping
    • simple
    • coins
    • contract
    • categories
    • nfts
    • exchanges
    • derivatives
    • asset_platforms
    • exchange_rates
    • search
    • trending
    • global
    • companies
    • indexes
  • Full Example
  • Tests
  • Roadmap
  • Contributing
  • License
  • Contact

Installation

Add the dependency to your Dart / Flutter project:

dependencies:
  coingecko_api: ^2.0.0

Usage

1. Create an instance of the API wrapper:

   CoinGeckoApi api = CoinGeckoApi();

2. Use any methods provided by wrapper. The methods are divided into sections, just as the CoinGecko does.

   final marketChart = await api.coins.getCoinMarketChart(
     id: 'bitcoin',
     vsCurrency: 'usd',
     days: 7,
   );

3. Work with the result as you see fit:

   if (!marketChart.isError) {
     marketChart.data.forEach((item) {
       print('Price: ${item.price}, Market Cap: ${item.marketCap}');
     });
   }

Documentation

All methods are asynchronous and use Future, so you need to use await to get the result.

Query results

The result of each method is a special object of type CoinGeckoResult. This is a kind of wrapper that allows you to first find out how successful the request was using its isError property. If isError is false, then we can use the data property of this object to get the processed data itself. Otherwise, we can view the error code and error message using properties errorCode and errorMessage.

Sections

All methods are divided into sections for easier understanding of the purpose of each method. To call any method, we first need to specify a section.

General scheme:

final result = await api./*section name*/./*method name*/(/*parameters*/);

All sections fully correspond to those in the CoinGecko API documentation itself: https://www.coingecko.com/api/documentation

Let's take a closer look at each of the sections and a set of methods in them. Each section will contain a table indicating the method, a short description of the method and the corresponding query string from the official CoinGecko website.

ping

Method name	Description	Query string
ping	Check API server status.	/ping

simple

Method name	Description	Query string
listPrices	Get the current price of any cryptocurrencies in any other supported currencies that you need.	/simple/price
listTokenPrices	Get current price of tokens (using contract addresses) for a given platform in any other currency that you need.	/simple/token_price/{id}
listSupportedVsCurrencies	Get list of supported vs currencies.	/simple/supported_vs_currencies

coins

Method name	Description	Query string
listCoins	List all supported coins id, name and symbol.	/coins/list
listCoinMarkets	List all supported coins price, market cap, volume, and market related data.	/coins/markets
getCoinData	Get current data (name, price, market, ... including exchange tickers) for a coin.	/coins/{id}
listCoinTickers	Get coin tickers (paginated to 100 items).	/coins/{id}/tickers
getCoinHistory	Get historical data (name, price, market, stats) at a given date for a coin.	/coins/{id}/history
getCoinMarketChart	Get historical market data include price, market cap, and 24h volume (granularity auto).	/coins/{id}/market_chart
getCoinMarketChartRanged	Get historical market data include price, market cap, and 24h volume within a range of timestamp (granularity auto).	/coins/{id}/market_chart/range
listCoinStatusUpdates	Get status updates for a given coin.	/coins/{id}/status_updates
getCoinOHLC	Get coin's OHLC.	/coins/{id}/ohlc

contract

Method name	Description	Query string
getContractTokenData	Get coin info from contract address.	/coins/{id}/contract/{contract_address}
getContractMarketChart	Get historical market data include price, market cap, and 24h volume (granularity auto) from a contract address.	/coins/{id}/contract/{contract_address}/market_chart
getContractMarketChartRanged	Get historical market data include price, market cap, and 24h volume within a range of timestamp (granularity auto) from a contract address.	/coins/{id}/contract/{contract_address}/market_chart/range

categories

Method name	Description	Query string
listCategoriesShort	List all categories.	/coins/categories/list
listCategories	List all categories with market data.	/coins/categories

nfts

Method name	Description	Query string
listNfts	Get all supported NFTs with id, contract address, name, asset platform id and symbol.	/nfts/list
getDataById	Get all the NFT data (name, floor price, 24 hr volume...) based on the NFT collection id	/nfts/{id}
getDataByContractAddress	Get all the NFT data (name, floor price, 24 hr volume...) based on the NFT collection contract address and respective asset platform	/nfts/{asset_platform_id}/contract/{contract_address}

exchanges

Method name	Description	Query string
listExchanges	List all exchanges.	/exchanges
listExchangesShort	List all supported exchanges: id and name.	/exchanges/list
getExchangeData	Get exchange volume in BTC and top 100 tickers only.	/exchanges/{id}
getExchangeTickers	Get exchange tickers (paginated, 100 tickers per page).	/exchanges/{id}/tickers
getExchangeVolumeChartData	Get volume_chart data for a given exchange.	/exchanges/{id}/volume_chart

derivatives

Method name	Description	Query string
listDerivatives	List all derivative tickers.	/derivatives
listDerivativeExchanges	List all derivative exchanges.	/derivatives/exchanges
getDerivativeExchange	Show derivative exchange data.	/derivatives/exchanges/{id}
listDerivativeExchangesShort	List all derivative exchanges name and identifier.	/derivatives/exchanges/list

asset_platforms

Method name	Description	Query string
listAssetPlatforms	List all asset platforms (Blockchain networks).	/asset_platforms

exchange_rates

Method name	Description	Query string
getBtcExchangeRates	Get BTC-to-Currency exchange rates.	/exchange_rates

search

Method name	Description	Query string
searchFor	Search for coins, categories and markets listed on CoinGecko ordered by largest Market Cap first.	/search

trending

Method name	Description	Query string
getSearchTrending	Get trending search coins (Top-7) on CoinGecko in the last 24 hours.	/search/trending

global

Method name	Description	Query string
getGlobalData	Get cryptocurrency global data.	/global
getGlobalDefiData	Get cryptocurrency global decentralized finance(defi) data.	/global/decentralized_finance_defi

companies

Method name	Description	Query string
getCompaniesData	Get public companies data.	/companies/public_treasury/{coin_id}

indexes

Method name	Description	Query string
listMarketIndexes	List all market indexes.	/indexes
getMarketIndex	Get market index by market id and index id.	/indexes/{market_id}/{id}
listMarketIndexesShort	List market indexes id and name.	/indexes/list

Full Example

final result = await api.coins.getCoinOHLC(
    id: 'bitcoin',
    vsCurrency: 'usd',
    days: 7,
);
if (!result.isError) {
    print('getCoinOHLC method returned result');
    result.data.forEach(
        (item) => print(
            '${item.timestamp}: open = ${item.open}, high = ${item.high}, low = ${item.low}, close = ${item.close}',
        ),
    );
} else {
    print('getCoinOHLC method returned error ${result.errorCode}: ${result.errorMessage}');
}

Tests

Each method is covered by a separate test using native dart testing platform dart test.

Roadmap

See the open issues for a list of proposed features and known issues.

Contributing

Contributions are what make the open source community such an amazing place to learn, inspire, and create. Any contributions you make are greatly appreciated.

1. Fork the project
2. Create your feature branch (git checkout -b feature/AmazingFeature)
3. Commit your changes (git commit -m 'Add some AmazingFeature')
4. Push to the branch (git push origin feature/AmazingFeature)
5. Open a Pull Request

License

Distributed under the MIT License. See LICENSE for more information.

Contact

Yegor Pelykh

E-mail: [email protected]

Project Link: github.com/yegor-pelykh/coingecko_api