Taapi Library

Overview

The Taapi class library is a .NET library designed to provide a simple, structured interface for interacting with the Taapi.io. It supports all of technical indicators, making it an ideal choice for financial applications requiring market analysis. This library also includes advanced features like bulk requests, robust error handling, and Api rate, calculation and construct limit management.

Table of Contents

• Features
• Installation
• Usage
• Project Structure
• Extensibility
• Contributing
• License
• Support
• Changelog

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Features

• Comprehensive Indicator Support: Fetch technical indicators (e.g., RSI, MACD, EMA).
• Single Indicator Requests: Query a single indicator for a given symbol and interval.
• Bulk Requests: Query multiple indicators simultaneously.
• Bulk Multi-Construct Requests: Query multiple indicators for multiple constructs simultaneously.
• Rate Limiting: Built-in API rate limiter to comply with Taapi.io usage limits asoociated with your subscription tier.
• Calculation and Constructs Limit Management: Handle calculation and construct limits to comply with Taapi.io usage limits associated with your subscription tier.
• Robust Centralized Error Handling: Robust error management using the ErrorHandler class, providing specific exceptions for common issues like rate limits and authentication errors.
• Extensibility: Easily extend to support additional endpoints or exchanges.

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Installation

Prerequisites

• .NET 8.0 or higher: Ensure you have .NET SDK installed. You can download it from Microsoft's official site.
• Taapi.io API Key: Sign up at Taapi.io and obtain an API key for accessing indicators. Free version of the API key will probably not work, because of the limitations of the free version of the API key.

Installation Steps

Add the library to your .NET project using one of the following methods:

// .NET CLI
> dotnet add package Grumson.Utilities.Taapi --version 2.0.1

// Package Manager
PM> NuGet\Install-Package Grumson.Utilities.Taapi -Version 2.0.1

// Package Reference
<PackageReference Include="Grumson.Utilities.Taapi" Version="2.0.1" />

Or, include the project in your solution and reference it directly.

---

Usage

Initialize the Client

using Grumson.Taapi.Services;
using Grumson.Taapi.Core.Enums;
using Microsoft.Extensions.Logging;

ILogger<TaapiClient> logger = LoggerFactory.Create(builder => builder.AddConsole()).CreateLogger<TaapiClient>();
string apiKey = "YOUR_API_KEY";
SubscriptionType subscriptionType = SubscriptionType.Pro;
var client = new TaapiClient(logger, apiKey, subscriptionType);

Fetch a Single Indicator

try {

    var request = new IndicatorRequest
    {
        Exchange = "binance",
        Symbol = "BTC/USDT",
        Interval = "1h",
        Indicator = "rsi"
    };

    IndicatorResponse response = await client.GetIndicatorAsync(request);
    Console.WriteLine($"RSI Value: {response.Data["value"]}");

} 
catch (RateLimitException ex)
{
    Console.WriteLine("Rate limit exceeded: " + ex.Message);
}
catch (AuthenticationException ex)
{
    Console.WriteLine("Authentication failed: " + ex.Message);
}
catch (TaapiException ex)
{
    Console.WriteLine("API error: " + ex.Message);
}

Fetch candles

try {

    // Build the indicator request
    var request = new IndicatorRequest {
        Exchange = "binance",
        Symbol = "BTC/USDT",
        Interval = "1h",
        Indicator = "candles",
        AdditionalParameters = new Dictionary<string, string> {
            { "period", "10" } // Number of candles
        }
    };

    var response = await client.GetIndicatorAsync(request);

    Console.WriteLine("List Response:");
    if (response.DataList?.Count > 0) {
        foreach (var data in response.DataList) {
            if(data?.Count > 0) {
                foreach (var item in data) {
                    Console.WriteLine($"{item.Key}: {item.Value}");
                }
            }
            Console.WriteLine();
        }
    }

} 
catch (RateLimitException ex)
{
    Console.WriteLine("Rate limit exceeded: " + ex.Message);
}
catch (AuthenticationException ex)
{
    Console.WriteLine("Authentication failed: " + ex.Message);
}
catch (TaapiException ex)
{
    Console.WriteLine("API error: " + ex.Message);
}

Bulk Indicator Request

try
{

    // Build bulk request for multiple indicators
    var bulkRequest = new BulkRequest {
        Constructs = new List<Construct>
        {
            new Construct
            {
                Exchange = "binance",
                Symbol = "BTC/USDT",
                Interval = TimeFrame.FourHours.GetDescription(),
                Indicators = new List<IndicatorDetail>
                {
                    new IndicatorDetail { Id = "BTC_Rsi", Indicator = "rsi" },
                    new IndicatorDetail { Id = "BTC_macd", Indicator = "macd" },
                    new IndicatorDetail { Id = "BTC_Candles", Indicator = "candles",
                        AdditionalParameters = new Dictionary<string, string> {
                            { "period", "10" } // Number of candles
                        }
                    },
                }
            }
        }
    };
    
    // Get the bulk indicators data
    var response = await client.GetBulkAsync(bulkRequest);

    // Print the response data
    Console.WriteLine("Bulk Response:");
    foreach (var data in response.Data) {

        // Split the indicator ID to get the symbol and indicator name
        string[] idParts = data.Id.Split('_');
        string symbol = idParts[0];
        string indicator = idParts[1];

        // Print the symbol and indicator name
        Console.WriteLine($"Symbol: {symbol}, Indicator: {indicator}");

        // Chek if the result is a dictionary or a list of dictionarys
        if (data.Result is Dictionary<string, object> resultDict) {
            // Process standard indicators
            foreach (var result in resultDict) {
                Console.WriteLine($"{result.Key}: {result.Value}");
            }
        }
        else if (data.Result is List<Dictionary<string, object>> dataList) {
            // Process candles data
            if (dataList.Count > 0) {
                foreach (var dataItem in dataList) {
                    foreach (var item in dataItem) {
                        Console.WriteLine($"{item.Key}: {item.Value}");
                    }
                    Console.WriteLine();
                }
            }
        }

        Console.WriteLine();
    }

}
catch (CalculationLimitExceededException ex)
{
    Console.WriteLine("Calculation limit error: " + ex.Message);
}
catch (RateLimitException ex)
{
    Console.WriteLine("Rate limit exceeded: " + ex.Message);
}
catch (AuthenticationException ex)
{
    Console.WriteLine("Authentication failed: " + ex.Message);
}
catch (TaapiException ex)
{
    Console.WriteLine("API error: " + ex.Message);
}

Bulk indicators for multiple constructs

try
{

    // Build bulk request for multiple constructs with multiple indicators
    var bulkRequest = new BulkRequest {
        Constructs = new List<Construct>
        {
            new Construct
            {
                Exchange = "binance",
                Symbol = "BTC/USDT",
                Interval = "1h",
                Indicators = new List<IndicatorDetail>
                {
                    new IndicatorDetail { Id = "BTC_rsi_1h", Indicator = "rsi" },
                    new IndicatorDetail { Id = "BTC_macd_1h", Indicator = "macd" }
                }
            },
            new Construct
            {
                Exchange = ExchangeType.Binance.GetDescription(),
                Symbol = "ETH/USDT",
                Interval = TimeFrame.FourHours.GetDescription(),
                Indicators = new List<IndicatorDetail>
                {
                    new IndicatorDetail { Id = "ETH_rsi_4h", Indicator = "rsi" },
                    new IndicatorDetail { Id = "ETH_macd_4h", Indicator = "macd" }
                }
            },
            new Construct
            {
                Exchange = ExchangeType.Binance.GetDescription(),
                Symbol = "BNB/USDT",
                Interval = TimeFrame.FourHours.GetDescription(),
                Indicators = new List<IndicatorDetail>
                {
                    new IndicatorDetail { Id = "BNB_candles_4h", Indicator = IndicatorType.Candles.GetDescription(), AdditionalParameters = new Dictionary<string, string> { { "period", "10" } } }
                }
            }
        }
    };


    var response = await client.GetBulkAsync(bulkRequest);

    foreach (var data in response.Data) {

        // Split the indicator ID to get the symbol and indicator name
        string[] idParts = data.Id.Split('_');
        string symbol = idParts[0];
        string indicator = idParts[1];
        string interval = idParts[2];

        // Print the symbol and indicator name
        Console.WriteLine($"Symbol: {symbol}, Indicator: {indicator}, Interval: {interval}");

        // Chek if the result is a dictionary or a list of candles
        if (data.Result is Dictionary<string, object> resultDict) {
            // Print the indicator results
            foreach (var result in resultDict) {
                Console.WriteLine($"{result.Key}: {result.Value}");
            }
        }
        else if (data.Result is List<Dictionary<string, object>> dataList) {
            // Print the candles data
            if (dataList.Count > 0) {
                foreach (var dataItem in dataList) {
                    foreach (var item in dataItem) {
                        Console.WriteLine($"{item.Key}: {item.Value}");
                    }
                    Console.WriteLine();
                }
            }
        }

        Console.WriteLine();
    }

}
catch (ConstructLimitExceededException ex)
{
    Console.WriteLine("Construct limit error: " + ex.Message);
}
catch (CalculationLimitExceededException ex)
{
    Console.WriteLine("Calculation limit error: " + ex.Message);
}
catch (RateLimitException ex)
{
    Console.WriteLine("Rate limit exceeded: " + ex.Message);
}
catch (AuthenticationException ex)
{
    Console.WriteLine("Authentication failed: " + ex.Message);
}
catch (TaapiException ex)
{
    Console.WriteLine("API error: " + ex.Message);
}

Test API Connection

bool isConnected = await client.TestConnectionAsync();
Console.WriteLine(isConnected ? "Connection Successful" : "Connection Failed");

Error Handling

try
{
    var response = await client.GetIndicatorAsync(request);
}
catch (ConstructLimitExceededException ex)
{
    Console.WriteLine("Construct limit error: " + ex.Message);
}
catch (CalculationLimitExceededException ex)
{
    Console.WriteLine("Calculation limit error: " + ex.Message);
}
catch (RateLimitException ex)
{
    Console.WriteLine("Rate limit exceeded: " + ex.Message);
}
catch (AuthenticationException ex)
{
    Console.WriteLine("Authentication failed: " + ex.Message);
}
catch (TaapiException ex)
{
    Console.WriteLine("API error: " + ex.Message);
}

Enum Usage for Configuration

Enums are used extensively to represent various types in the library and standardize and simplify request configurations.

TimeFrame interval = TimeFrame.OneHour;
string intervalName = interval.GetDescription(); // "1h"

// Configure the bulk request with enum values
var bulkRequest = new BulkRequest {
    Constructs = new List<Construct>
    {
        new Construct
        {
            Exchange = ExchangeType.Binance.GetDescription(),
            Symbol = "BTC/USDT",
            Interval = TimeFrame.FourHours.GetDescription(),
            Indicators = new List<IndicatorDetail>
            {
                new IndicatorDetail { Id = "BTC_rsi_4h", Indicator = IndicatorType.RSI.GetDescription() },
                new IndicatorDetail { Id = "BTC_macd_4h", Indicator = IndicatorType.MACD.GetDescription() }
            }
        }
    }
};

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Project Structure

• Core: Contains models, enums, and default configurations.
  • Models: IndicatorRequest, IndicatorResponse, BulkRequest, BulkResponse, CandleData, etc.
  • Enums: IndicatorType, TimeFrame, ExchangeType, etc.
• Services: Includes the main API client (TaapiClient) and supporting classes like RateLimiter.
• Helpers: Utility classes for parsing and formatting data.
  • ErrorHandler: A utility class for parsing and managing API errors, throwing specific exceptions for better debugging and handling.
• Exceptions: Custom exception classes for error handling.

---

Extensibility

The library is designed to be extensible. You can:

1. Add support for new endpoints by extending ITaapiClient and TaapiClient.
2. Include additional indicators or exchanges by updating the respective enums.
3. Modify rate limits or subscription tiers in ApiRateLimits.cs.

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Contributing

Contributions are welcome! If you have any questions, suggestions, or you want to contribute to this project, feel free to contact me at info@grumson.eu

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License

This project is licensed under the MIT License. See LICENSE for more information.

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Support

Use this link to register on Taapi.io and you will support me with a small commission.

If you like this project and you want to support it, you can donate to the following addresses:

Network BSC BNB smart chain (BEP20) : 0xd8c509ed7d8f96847618d926e2b831d804e02ece

• BNB : 0xd8c509ed7d8f96847618d926e2b831d804e02ece
• USDT : 0xd8c509ed7d8f96847618d926e2b831d804e02ece

Network Solana (SPL) : 4D1W3Vv2tbfAzuEgBSiNGqdtGT5wUjbodoF6mXEsnvTf

• SOL : 4D1W3Vv2tbfAzuEgBSiNGqdtGT5wUjbodoF6mXEsnvTf
• USDC : 4D1W3Vv2tbfAzuEgBSiNGqdtGT5wUjbodoF6mXEsnvTf

Network Ethereum (ERC20) : 0xd8c509ed7d8f96847618d926e2b831d804e02ece

• ETH : 0xd8c509ed7d8f96847618d926e2b831d804e02ece
• USDC : 0xd8c509ed7d8f96847618d926e2b831d804e02ece

BTC : 19pxXzh1Kzzw73v6iKbowr1DJro5ozgZj6

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Changelog

Version 2.0.3

• Change fetch candles to return a list of dictionaries instead of a list of CandlesModel

Version 2.0.2

• Improve Error Categorization

Version 2.0.1

• Fixed that candles were not being fetched correctly in the IndicatorResponse and BulkResponse classes.

Version 2.0.0

• It is totally rewritten from scratch. The library is now more flexible and extensible. It supports multiple indicators and multiple constructs in bulk requests. It has a new error handling system and a new API rate limiter system.