coingecko-api

Apps & Automation

Fetch token metadata, prices by contract address or CoinGecko ID, asset platform mappings, and token lists via the CoinGecko API in Nethereum.DataServices

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CoinGecko API

Access CoinGecko token metadata, pricing, and asset platform mappings using Nethereum.DataServices.

NuGet Package: Nethereum.DataServices

Installation

dotnet add package Nethereum.DataServices

Quick Start

using Nethereum.DataServices.CoinGecko;

var coingecko = new CoinGeckoApiService();

// Map chain ID to CoinGecko platform
string platformId = await coingecko.GetPlatformIdForChainAsync(chainId: 1);
// "ethereum"

// Get token list for a chain
var tokenList = await coingecko.GetTokenListForChainAsync(chainId: 1);
Console.WriteLine(quot;Ethereum tokens: {tokenList.Tokens.Count}");

// Get prices by CoinGecko ID
var prices = await coingecko.GetPricesAsync(new[] { "ethereum", "usd-coin" }, "usd");
Console.WriteLine(quot;ETH: ${prices["ethereum"]["usd"]}");

// Get price by contract address
decimal? usdcPrice = await coingecko.GetTokenPriceByContractAsync(
    "ethereum", "0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48", "usd");

Available Methods

Method	Returns	Description
`GetAssetPlatformsAsync(forceRefresh?)`	`List<CoinGeckoAssetPlatform>`	All blockchain platforms with chain identifiers
`GetPlatformIdForChainAsync(chainId)`	`string`	Map numeric chain ID to CoinGecko platform ID
`GetCoinsListAsync(forceRefresh?)`	`List<CoinGeckoCoin>`	Every coin with platform/address mappings
`GetTokenListForChainAsync(chainId, forceRefresh?)`	`CoinGeckoTokenList`	Token list for a chain (address, symbol, name, decimals, logo)
`GetTokenListForPlatformAsync(platformId, forceRefresh?)`	`CoinGeckoTokenList`	Token list by platform ID
`GetTokensForChainAsync(chainId, forceRefresh?)`	`List<CoinGeckoToken>`	Flat token collection for a chain
`GetPricesAsync(geckoIds, vsCurrency)`	`Dictionary<string, Dictionary<string, decimal>>`	Batch prices by CoinGecko ID
`GetTokenPriceByContractAsync(platformId, address, vsCurrency)`	`decimal?`	Price by contract address (null if not found)
`FindCoinGeckoIdAsync(contractAddress, chainId)`	`string`	Map contract address to CoinGecko ID
`FindCoinGeckoIdsAsync(addresses, chainId)`	`Dictionary<string, string>`	Batch address-to-ID mapping
`ClearCache()`	`void`	Clear all cached data

Asset Platforms

var platforms = await coingecko.GetAssetPlatformsAsync();
foreach (var p in platforms.Where(x => x.ChainIdentifier.HasValue).Take(10))
    Console.WriteLine(quot;Chain {p.ChainIdentifier}: {p.Id} ({p.Name})");

Token Lists

var tokenList = await coingecko.GetTokenListForChainAsync(chainId: 1);
foreach (var token in tokenList.Tokens.Take(5))
    Console.WriteLine(quot;{token.Symbol}: {token.Name} ({token.Address})");

Pricing

// By CoinGecko ID (batches at 250 per request)
var prices = await coingecko.GetPricesAsync(
    new[] { "ethereum", "usd-coin", "bitcoin" }, "usd");

// By contract address
decimal? price = await coingecko.GetTokenPriceByContractAsync(
    "ethereum", "0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48", "usd");

Address-to-ID Mapping

string geckoId = await coingecko.FindCoinGeckoIdAsync(
    "0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48", chainId: 1);
// "usd-coin"

var ids = await coingecko.FindCoinGeckoIdsAsync(
    new[] { "0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48", "0xdAC17F958D2ee523a2206206994597C13D831ec7" },
    chainId: 1);

Cache Configuration

var config = new CoinGeckoCacheConfiguration
{
    Enabled = true,
    PlatformsCacheDuration = TimeSpan.FromHours(24),
    CoinsListCacheDuration = TimeSpan.FromHours(1),
    TokenListCacheDuration = TimeSpan.FromHours(1),
    RateLimitDelay = TimeSpan.FromMilliseconds(1500)
};

var coingecko = new CoinGeckoApiService(config);

// Disable caching (for tests)
var testService = new CoinGeckoApiService(CoinGeckoCacheConfiguration.Disabled);

// Force refresh specific cache
var fresh = await coingecko.GetAssetPlatformsAsync(forceRefresh: true);

// Clear all caches
coingecko.ClearCache();

Key Namespaces

Nethereum.DataServices.CoinGecko — Service, cache config, and response models