nethereum/nethereum/coingecko-api

dotnet add package Nethereum.DataServices

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($"Ethereum tokens: {tokenList.Tokens.Count}");
 
// Get prices by CoinGecko ID
var prices = await coingecko.GetPricesAsync(new[] { "ethereum", "usd-coin" }, "usd");
Console.WriteLine($"ETH: ${prices["ethereum"]["usd"]}");
 
// Get price by contract address
decimal? usdcPrice = await coingecko.GetTokenPriceByContractAsync(
    "ethereum", "0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48", "usd");

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

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

// 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");

string geckoId = await coingecko.FindCoinGeckoIdAsync(
    "0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48", chainId: 1);
// "usd-coin"
 
var ids = await coingecko.FindCoinGeckoIdsAsync(
    new[] { "0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48", "0xdAC17F958D2ee523a2206206994597C13D831ec7" },
    chainId: 1);

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();