Global market indices JSON API

Real-time and historical data for indices works well for serving as a benchmark.

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Reliable data

Currency data is sourced from well established providers, that correspond to the institutional grade performance standards.

Real time & historical

Most indices can be streamed in real-time, whereas others have a slight delay. Data can also be accessed historically.

Low latency

API data is updated every 1 minute, but in real-time streaming it updates tick by tick with latency of 170ms.

Ease of integration

Use the data in JSON, CSV formats, and WebSocket for real-time streaming, with direct connection or using our SDKs.

Global coverage

Indices as is

Access to all stock exchanges in the world, with a single API - sharing the same format for all data.

Global

International indices coming from North & South America, Asia, Europe, Africa, and Australia - all updated in real-time.

DAX (Germany)
FTSE 100 (FTSE, United Kingdom)
Nifty 50 (NSE, India)
CAC 40 (FCHI, France)
EGX 30 Price Return Index (CASE30, Egypt)

Nikkei 225 (N225, Japan)
KOSPI Composite Index (KS11, Korea)
STI Index (STI, Singapore)
Shanghai Composite Index (China)
ESTX 50 PR.EUR (STOXX50E, Europe)

Full list of indices

Single platform

Developer-centric

Rapidly integrate indices data into your project with modern languages, from Python to Golang. Using Twelve Data's API means less code maintenance and more time towards building a great product.

Same request and response structure for all indexes
HTTP RESTful API supports JSON and CSV formats
Real-time indices streaming via WebSocket
World-class documentation with various SDKs
99.95% SLA uptime

API docs WebSocket docs

            
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from twelvedata import TDClient
 
td = TDClient(apikey="YOUR_API_KEY_HERE")
 
ts = td.time_series(
    symbol="TSLA",
    interval="1min",
    outputsize=12,
)
 
print(ts.as_json())
 


#include <cjson/cJSON.h> // https://github.com/DaveGamble/cJSON
#include <curl/curl.h>
#include <iostream>
#include <memory>
 
const char* REQUEST_URL = "https://api.twelvedata.com/time_series?symbol=TSLA&interval=1min&outputsize=12&apikey=YOUR_API_KEY_HERE";
 
// Take response data and write into the string
std::size_t write_callback(const char* data, std::size_t size, std::size_t count, std::string* out) {
    const std::size_t result = size * count;
    out->append(data, result);
 
    return result;
}
 
int main() {
    std::unique_ptr<std::string> responseData(new std::string());
    cJSON* json = nullptr;
    CURL* curl = curl_easy_init();
 
    curl_easy_setopt(curl, CURLOPT_URL, REQUEST_URL);
    curl_easy_setopt(curl, CURLOPT_HTTPGET, 1);
    curl_easy_setopt(curl, CURLOPT_WRITEDATA, responseData.get());
    curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, write_callback);
    curl_easy_perform(curl);
 
    json = cJSON_Parse(responseData->c_str());
    cJSON* metaField = cJSON_GetObjectItem(json, "meta");
    cJSON* valuesField = cJSON_GetObjectItem(json, "values");
    cJSON* symbolField = cJSON_GetObjectItem(metaField, "symbol");
    cJSON* closeField = cJSON_GetObjectItem(cJSON_GetArrayItem(valuesField, 0), "close");
 
    std::cout << "Received symbol: " << cJSON_GetStringValue(symbolField) << ", ";
    std::cout << "close: " << cJSON_GetStringValue(closeField) << std::endl;
 
    cJSON_Delete(json);
    curl_easy_cleanup(curl);
 
    return 0;
}
 


using System;
using System.Collections.Generic;
using System.Net;
using System.Text.Json;
 
namespace TwelveData
{
    public class TimeSeries
    {
        public Dictionary<string, string> meta { get; set; }
        public IList<Dictionary<string, string>> values { get; set; }
        public string status { get; set; }
    }
 
    class Prices
    {
        static void Main(string[] args)
        {
            using WebClient wc = new WebClient();
            var response = wc.DownloadString("https://api.twelvedata.com/time_series?symbol=TSLA&interval=1min&outputsize=12&apikey=YOUR_API_KEY_HERE");
            var timeSeries = JsonSerializer.Deserialize<TimeSeries>(response);
            if (timeSeries.status == "ok")
            {
                Console.WriteLine("Received symbol: " + timeSeries.meta["symbol"] + ", close: " + timeSeries.values[0]["close"]);
            }
        }
    }
}
 


import org.json.simple.parser.JSONParser;
import org.json.simple.JSONArray;
import org.json.simple.JSONObject;
 
import java.util.Scanner;
import java.net.HttpURLConnection;
import java.net.URL;
 
public class Main {
    private static final String REQUEST_URL = "https://api.twelvedata.com/time_series?symbol=TSLA&interval=1min&outputsize=12&apikey=YOUR_API_KEY_HERE";
 
    public static void main(String[] args) throws Exception {
        URL requestURL = new URL(REQUEST_URL);
        HttpURLConnection connection = (HttpURLConnection)requestURL.openConnection();
        StringBuffer responseData = new StringBuffer();
        JSONParser parser = new JSONParser();
 
        connection.setRequestMethod("GET");
        connection.setRequestProperty("User-Agent", "twelve_java/1.0");
        connection.connect();
 
        if (connection.getResponseCode() != 200) {
            throw new RuntimeException("Request failed. Error: " + connection.getResponseMessage());
        }
 
        Scanner scanner = new Scanner(requestURL.openStream());
        while (scanner.hasNextLine()) {
            responseData.append(scanner.nextLine());
        }
 
        JSONObject json = (JSONObject) parser.parse(responseData.toString());
        JSONObject meta = (JSONObject) json.get("meta");
        JSONArray values = (JSONArray) json.get("values");
        
        connection.disconnect();
    }
}
 


# install.packages("RcppSimdJson")
 
apikey <- "YOUR_API_KEY_HERE"
qry <- paste0(
        "https://api.twelvedata.com/time_series?",
        "symbol=AAPL&interval=1min&outputsize=12",
        "&apikey=", apikey)
res <- RcppSimdJson::fload(qry)
res
 


# pip install twelvedata[websocket]
 
from twelvedata import TDClient
 
def on_event(e):
    print(e)
 
td = TDClient(apikey="YOUR_API_KEY_HERE")
ws = td.websocket(symbols="TSLA", on_event=on_event)
ws.connect()
ws.keep_alive()
 


#include <websocketpp/config/asio_client.hpp>
#include <websocketpp/client.hpp>
#include <cjson/cJSON.h>
 
#include <iostream>
#include <iomanip>
#include <ctime>
 
namespace wlib = websocketpp::lib;
namespace ssl = boost::asio::ssl;
 
typedef websocketpp::client<websocketpp::config::asio_tls_client> wclient;
typedef wlib::shared_ptr<wlib::asio::ssl::context> context_ptr;
 
const char* ENDPOINT = "wss://ws.twelvedata.com/v1/quotes/price?apikey=YOUR_API_KEY_HERE";
 
const char* SUBSCRIBE_ACTION = "{"\
    "\"action\": \"subscribe\"," \
    "\"params\": {" \
        "\"symbols\": \"TSLA\"" \
    "}" \
"}";
 
int main() {
    wclient::connection_ptr connection;
    wlib::error_code error_code;
    wclient client;
    
    client.set_access_channels(websocketpp::log::alevel::all);
    client.clear_access_channels(websocketpp::log::alevel::frame_payload);
    client.set_error_channels(websocketpp::log::elevel::all);
 
    // Initialize Boost.ASIO
    client.init_asio();
 
    // Set TLS initialize handler
    client.set_tls_init_handler(wlib::bind([](auto* hostname, auto hdl) {
        context_ptr context = wlib::make_shared<ssl::context>(ssl::context::sslv23);
        context->set_verify_mode(ssl::verify_none);
 
        return context;
    }, ENDPOINT, websocketpp::lib::placeholders::_1));
 
    // Is called after the WebSocket handshake is complete
    client.set_open_handler([&client](auto hdl) {
        // Send subscribe action to stream
        client.send(hdl, SUBSCRIBE_ACTION, websocketpp::frame::opcode::text);
    });
 
    // Receive and handle messages from server
    client.set_message_handler([](auto hdl, wclient::message_ptr message) {
        cJSON* json = cJSON_Parse(message->get_payload().c_str());
 
        if (json == nullptr) {
            std::cout << "received invalid JSON: " << std::endl << message->get_payload() << std::endl;
            return;
        }
 
        // Get event type
        cJSON* eventTypeField = cJSON_GetObjectItem(json, "event");
        if (eventTypeField == nullptr) {
            std::cout << "unknown JSON structure" << std::endl;
            return;
        }
 
        // Extract string from event type
        const char* eventType = cJSON_GetStringValue(eventTypeField);
        if (strcmp(eventType, "subscribe-status") == 0) {
            cJSON* statusField = cJSON_GetObjectItem(json, "status");
            const char* status = cJSON_GetStringValue(statusField);
 
            if (strcmp(status, "ok") != 0) {
                std::cout << "Failed subscribe to stream" << std::endl;
                return;
            }
 
            cJSON* successField = cJSON_GetObjectItem(json, "success");
            cJSON* failsField = cJSON_GetObjectItem(json, "fails");
 
            // Iterate over the symbols that were successfully subscribed
            for (int idx = 0; idx < cJSON_GetArraySize(successField); idx++) {
                cJSON* item = cJSON_GetArrayItem(successField, idx);
                cJSON* symbolField = cJSON_GetObjectItem(item, "symbol");
                const char* symbol = cJSON_GetStringValue(symbolField);
 
                std::cout << "Success subscribed to `"<< symbol << "` " << "symbol." << std::endl;
            }
 
            // If we're unable to subscribe to some symbols
            for (int idx = 0; 0 < cJSON_GetArraySize(failsField); idx++) {
                cJSON* item = cJSON_GetArrayItem(failsField, idx);
                cJSON* symbolField = cJSON_GetObjectItem(item, "symbol");
                const char* symbol = cJSON_GetStringValue(symbolField);
 
                std::cout << "Failed to subscribe on `"<< symbol << "` " << "symbol." << std::endl;
            }
 
            return;
        }
 
        if (strcmp(eventType, "price") == 0) {
            cJSON* timestampField = cJSON_GetObjectItem(json, "timestamp");
            cJSON* currencyField = cJSON_GetObjectItem(json, "currency");
            cJSON* symbolField = cJSON_GetObjectItem(json, "symbol");
            cJSON* priceField = cJSON_GetObjectItem(json, "price");
            time_t time = timestampField->valueint;
 
            std::cout << "[" << std::put_time(gmtime(&time), "%I:%M:%S %p") << "]: ";
            std::cout << "The symbol `" << cJSON_GetStringValue(symbolField) << "` ";
            std::cout << "has changed price to " << priceField->valuedouble << " ";
            
            if (currencyField != nullptr) {
                std::cout << "(" << cJSON_GetStringValue(currencyField) << ")" << std::endl;
            } else {
                std::cout << std::endl;
            }
            
            return;
        }
 
        // Free memory of JSON structure
        cJSON_Delete(json);
    });
 
    // New connection to WebSocket endpoint
    connection = client.get_connection(ENDPOINT, error_code);
    if (error_code) {
        std::cout << "Failed connection. Message: " << error_code.message() << std::endl;
        return -1;
    }
 
    // Connect to websocket endpoint
    client.connect(connection);
    client.run();
}
 


using System;
using WebSocket4Net; //https://github.com/kerryjiang/WebSocket4Net
 
namespace TwelveData
{
    class TDWebSocket
    {
        WebSocket ws = new WebSocket("wss://ws.twelvedata.com/v1/quotes/price?apikey=YOUR_API_KEY_HERE");
 
        static void Main()
        {
            new TDWebSocket().Init();
        }
 
        public void Init()
        {
            ws.Opened += OnOpen;
            ws.Closed += OnClose;
            ws.Error += OnError;
            ws.MessageReceived += OnEvent;
 
            ws.Open();
            Console.ReadLine();
        }
 
        private void OnOpen(object sender, EventArgs e)
        {
            Console.WriteLine("TDWebSocket opened!");
            ws.Send("{\"action\": \"subscribe\", \"params\":{\"symbols\": \"TSLA\"}}");
        }
 
        private void OnClose(object sender, EventArgs e)
        {
            Console.WriteLine("TDWebSocket closed");
        }
 
        private void OnError(object sender, SuperSocket.ClientEngine.ErrorEventArgs e)
        {
            Console.WriteLine("TDWebSocket ERROR: " + e.Exception.Message);
        }
 
        private void OnEvent(object sender, MessageReceivedEventArgs e)
        {
            Console.WriteLine(e.Message);
        }
    }
}
 


import org.java_websocket.handshake.ServerHandshake;
import org.java_websocket.client.WebSocketClient;
 
import org.json.simple.parser.ParseException;
import org.json.simple.parser.JSONParser;
import org.json.simple.JSONObject;
 
import java.net.URI;
 
public class Main {
    private static final String ENDPOINT = "wss://ws.twelvedata.com/v1/quotes/price?apikey=YOUR_API_KEY_HERE";
 
    public static void main(String[] args) throws Exception {
        WebSocketClient client = new WebSocketClient(new URI(ENDPOINT)) {
            @Override
            public void onOpen(ServerHandshake handshake) {
                System.out.println("TDWebSocket opened!");
                send("{\"action\": \"subscribe\", \"params\":{\"symbols\": \"TSLA\"}}");
            }
 
            @Override
            public void onMessage(String message) {
                JSONParser parser = new JSONParser();
                try {
                    JSONObject json = (JSONObject) parser.parse(message);
                    System.out.println(json);
                } catch(ParseException e) {
                    e.printStackTrace();
                }
            }
 
            @Override
            public void onClose(int status, String reason, boolean remote) {
                System.out.println("TDWebSocket closed.");
                this.close();
            }
 
            @Override
            public void onError(Exception e) {
                e.printStackTrace();
            }
        };
 
        client.connectBlocking();
    }
}
 


# install.packages("websocket")
 
library(websocket)
 
ws <- WebSocket$new("wss://ws.twelvedata.com/v1/quotes/price?apikey=YOUR_API_KEY_HERE")
ws$onOpen(function(event) {
    cat("TDWebSocket opened!\n")
})
ws$onClose(function(event) {
    cat("TDWebSocket closed with code ", event$code,
        " and reason ", event$reason, "\n", sep = "")
})
ws$onError(function(event) {
    cat("TDWebSocket ERROR: ", event$message, "\n")
})
ws$onMessage(function(event) {
    cat("Received event:", event$data, "\n")
})
 
ws$send('{"action": "subscribe", "params":{"symbols": "TSLA"}}')
 

 

            
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