Indian Stock Market Data API Integration

@OutsourceMan

As one of India's most reputed web and app development teams with a specialisation in cloud computing, we are excellently positioned to support your ambitious project. Our vast experience of over 18 years includes successful API integration and collaborative projects with fintech companies, making us a perfect fit for your Real-time Indian stock market data API requirement. Our data-driven approach includes profound expertise in WebSocket-based live price streaming exhilarating with LTP, OHLC, Volume, Market Depth. Additionally, our knowledge of frontier technologies like ReactJS, NodeJS before Scala contribute greatly to superior software performance which would be vital for your Paper Trading app exceeding performance expectations. I have sent you a portfolio exhibiting our work around Mobile App Development including efficient Trading Platforms and can't wait to showcase it further when we get the chance to connect. With CnELIndia by your side, expect nothing short of timely, tailored and innovative solutions for a long-term collaboration. Explore the vastness of our capabilities and let's make this project a big win!

@Hrolgar

Kite Connect's full WebSocket mode gives 5 bid and ask levels per instrument, while other Indian broker APIs expose depth and candles a bit differently, so I would keep the paper-trading app away from those provider-specific shapes. I would build a broker-agnostic ingestion layer around whichever API access you already have, Zerodha, Upstox, Angel One, Fyers, Dhan, or Shoonya. The app would consume one normalized feed for LTP, OHLC, volume, depth, and historical candles, with the broker adapter handling auth, reconnects, symbol mapping, tick parsing, REST backfill, and rate-limit handling. That keeps the trading engine clean if you switch provider later. M1: Provider adapter and normalized market data contract, 15,000 INR, 2 days. M2: WebSocket live feed, historical REST backfill, reconnect handling, and integration handover, 22,500 INR, 4 days. The 37,500 INR is a starting number from the brief; the thing that can move it is provider choice and how many instruments need live depth at once. I would keep the first version practical: one broker fully wired end to end, clean interfaces for adding the next one, and enough logging to see missed ticks, reconnects, and bad symbols without guessing. Which broker API do you already have approved access for, and do you need market depth for every subscribed symbol or only the active watchlist/order candidates?

@TechizeBuilder

Dear Client, I read "Indian Stock Market Data API Integration" carefully and understand what you're looking to achieve with this Mern Stack Development project. My hands-on experience with Mobile App Development, Full Stack Development aligns directly with what you need. I've delivered similar Mern Stack Development work end to end — clean, scalable and on time — and I can share closely related samples and start right away. A few quick questions to get us started: 1. Do you have detailed requirements ready, or should we define the scope together? 2. What's your target timeline for the first working version? 3. Are there existing designs, code or systems I should build on? Thanks & Regards, Deepak

@iimtpradeepdash

Built real-time stock data flows for Indian paper trading apps twice—most recently for a client using Angel One and Upstox streams (Node.js backend, WebSocket multiplexing, React front, Flutter mobile). Streaming LTP/OHLC/Depth is not a problem as long as you have the permitted market data, but you need a broker-side API license to get full live ticks for NSE/BSE. Approach: I’d use Node.js for API and WebSocket aggregation, PostgreSQL or MongoDB for storing user portfolios, plug React.js and Flutter frontends into a unified stream. I wire up a throttler to avoid dropping ticks if clients idle. Do you already have approved broker API keys? If not, I can clarify what is viable for a virtual trading context. Share the APIs you want to use and I’ll map your integration plan. Pradeep

@Kishoreindia

Hi, I'm a Flutter/Dart developer with hands-on experience building and shipping production apps across fintech, healthcare, education, and travel — currently live on both Play Store and App Store. A few examples from my portfolio: • Finnov & MinePay — fintech/payment apps with secure transactions and clean UX • PrayagEdu — school management app (Android + iOS) handling student/parent/teacher workflows • SNAH Caregiver & SNAH Users — dual-app healthcare ecosystem connecting caregivers with patients • MedNob AI & Jepluse — medical/health apps with AI-assisted features • Thatzal & Thatzal Trip — travel and trip-planning apps with booking flows • GetOurStay — property/stay booking platform • Lisners & Lisners Therapist — dual-sided therapy/audio platform for clients and therapists Across these projects, I've handled end-to-end development: clean architecture, state management (Bloc/Provider/GetX/RiverPod), REST/Firebase integration, push notifications, payment gateways, and smooth deployment to both Play Store and App Store. I focus on writing maintainable, scalable code and communicating clearly throughout — regular updates, honest timelines, and no surprises. I'd love to understand your project requirements in more detail and share how I can bring similar quality and reliability to your app. Happy to start with a quick call or share more code samples/case studies. Looking forward to working together. Best regards, Kishore Patidar

@FreeLancers360

Hi, Thanks for posting "Indian Stock Market Data API Integration" — it lands right in our wheelhouse, and we'd be thrilled to bring it to life. I don’t just want to tick the boxes here; my aim is to hand you something that genuinely goes beyond what you pictured. From your brief I can see this involves react, node, full stack — all areas we handle in-house. We specialise in Mobile App Development, Cloud Computing, Software Development, Full Stack Development, which lines up directly with what you need. How we'd approach it: - Map out the scope, pages and data models up front - Build the frontend and backend with clean, scalable code - Test across devices and browsers, then deploy - Hand over with documentation and post-launch support I’ll fold in your feedback fast and keep refining until the result feels exactly right to you. If it helps, I can share a couple of relevant samples and a short plan before you decide. Looking forward to it! Best regards, FreeLancers360 Let’s connect in chat and get started — message me anytime and I’ll reply right away!

@Baghali1

I understand your project. I already work for like that whose fetch nifty and bank nifty etc. I'll develop according to your requirements. Using upstox api or international trading that provide for you paper trading. I am waiting for your response.

@rajeshrolen

Hi there, I specialize in API integration and software development, and I have experience working with real-time market data APIs for trading platforms. I understand the importance of accurate and timely data for a successful paper trading application in the Indian stock market. My expertise includes integrating NSE/BSE market data APIs, implementing WebSocket-based live price streaming, handling LTP, OHLC, Volume, and Market Depth data. I have previously worked on projects involving historical market data integration and have experience with various trading platforms and brokerage APIs. I am well-versed in technologies like ReactJS, NodeJS, and Flutter, making me well-equipped to handle the development requirements of your project. I am committed to delivering high-quality solutions that meet your specific needs and requirements. If you are looking for a reliable and experienced developer to assist with your Indian stock market data API integration, I would be happy to discuss further. Please feel free to reach out to me with more details about your project. Looking forward to the opportunity to collaborate with you. Sincerely, Rajesh Rolen

@Mayanks010

Hi, Thanks for sharing your project. It aligns well with work I’ve successfully completed for other clients, and I’m confident I can deliver a high-quality solution tailored to your requirements. Before providing an accurate timeline, scope, and budget, I’d like to clarify a few key details to ensure we're aligned from the start. Freelancer’s proposal character limit makes it difficult to cover everything thoroughly here. If you're available, let's connect via chat. I can walk you through similar projects I've completed, discuss the best approach for your specific requirements, and answer any questions you may have. Once I understand your expectations, I'll provide a clear execution plan with realistic timelines and pricing. I’m ready to get started as soon as we finalize the details and look forward to working with you. Best regards, Mayank Sahu

@ASSAMWEB

Greetings, I have reviewed your project description and recently worked on a similar project. I believe I can help you deliver this successfully. Let’s open a chat to discuss your requirements in detail and determine the best approach for your project. live example demo . Note Bid price is just a placeholder Regards

@sibtain0999

With six years' experience working solely as a mobile app developer, I am extremely proficient in utilizing cutting-edge technology and integrating APIs to create high-performing solutions that have a significant impact on businesses. My expertise spans across Android and iOS app development, with a particular focus on Flutter, the platform perhaps best suited for your paper trading app project. This skillset allows me to ensure optimum compatibility and deliver a seamless experience across platforms, adding value at every stage of the development process. Given the intricate nature of stock market data, I've continually invested time honing my API integration abilities to ensure smooth, real-time data transfer. Though I haven't worked with Indian broker APIs before, my experience in integrating APIs like Finbox and Alphavantage confirms my ability to adapt swiftly and utilize even complex APIs effectively. Apart from my technical skills, I come with a deep understanding and appreciation of user-experience design. This offers me an innate insight into building apps tailored to meet client's needs efficiently and enhance user engagement. The long-term collaboration you're seeking perfectly aligns with my committed demeanor towards any project I undertake, making me an ideal fit for this endeavor. With our combined talents, we can build a robust paper trading application that meets every desired benchmark. Let's get started onceptive!

@vertechsolutions

Hello, I can integrate real-time NSE/BSE feeds with WebSocket streaming for accurate LTP, OHLC, volume and market depth so your paper-trading app receives low-latency live prices. I've spent the last 4 years solving exactly this type of problem. I'll connect to reliable market-data providers and broker Financial APIs (Zerodha/Upstox/Angel or third-party), implement a WebSocket bridge, normalize ticks to LTP/OHLC/volume/depth, persist historical data for replay, and deploy the streaming pipeline using Cloud Computing (AWS/GCP) while applying a Full Stack Development approach with Node.js back-end and React/Flutter front-end to integrate streams and simulate trades. I'd be happy to share relevant portfolio examples and discuss the timeline and quotation. Thanks, syed ribal www.freelancer.com/u/vertechsolutions

@trb2004

❤️Hi,there❤️ I have experience with real-time market data integration and have worked with APIs from brokers like Zerodha and Angel One before. This project aligns perfectly with my skills, and I can deliver within the specified timeline with 100% accuracy. Please take a look at my profile for more details. I understand you're developing a Paper Trading application for the Indian stock market and need assistance with real-time NSE/BSE market data integration using WebSocket-based live price streaming. I have relevant experience in building paper trading applications and integrating APIs from market data providers. This project excites me, and I am eager to collaborate with you to achieve your goals. Looking forward to connecting with you to discuss your project further. Let's make this collaboration a success! Warm regards, Thaveesha

@Sahyadri96

Completed projects till now 1) Python + DhanAPI +Excel + VBA option scalping strategy 2) Python 21 EMA and 9 EMA crossover strategy on DhanAPI 3) Google sheet + FyersAPI trading 4) Google sheet + Algomojo + Upstox 5) Tradetron Banknifty option scalping strategy 6) Excel 2600 NSE 10 years data 7) Copytrading using python 8) Tradetron Supertrend + MACD Crossover Strategy 9) Dhan option chain with Greeks in Google spreadsheet via Google Appscript 10) Backtesting of Nifty options for wait and trade strategy 11) Trigger orders for Dhan Nifty options 12) Shoonya API:- Wait and trade strategy 13) Tradetron: RSI + ADX + EMA strategy 14) Python Moving avarage channel trading Algo 15) Kotak Neo: Turtle scalping strategy for options 16) Fyers Filtered option chain in Excel 17) Binance Bitcoin tradingview strategy python bot 18) Fyers Tradingview python bot 19) Dhan Python order manager I can deliver any project in Trading. Readymade setups for Python available

@shailender18

Hey, I will integrate real-time NSE/BSE market data into your paper trading platform with WebSocket-based live streaming, LTP, OHLC, volume, market depth, and historical data where supported by the provider. I have experience with API integrations, WebSockets, React/Node.js, Flutter, and real-time data-driven applications. I can work with brokerage APIs such as Angel One, Upstox, Zerodha, Fyers, Dhan, or Shoonya and help select the most reliable option based on your requirements. Questions: 1. Which broker/API provider are you currently considering? 2. Do you need order simulation and portfolio tracking included in this phase? 3. Is your current platform built with React/Node.js, Flutter, or another stack? Send me a message and we can discuss the API options and implementation plan. Best regards, Shailender

@Anika1802

Hey, I will integrate real-time NSE/BSE market data into your paper trading platform with WebSocket-based live streaming, LTP, OHLC, volume, market depth, and historical data where supported by the provider. I have experience with API integrations, WebSockets, React/Node.js, Flutter, and real-time data-driven applications. I can work with brokerage APIs such as Angel One, Upstox, Zerodha, Fyers, Dhan, or Shoonya and help select the most reliable option based on your requirements. Questions: 1. Which broker/API provider are you currently considering? 2. Do you need order simulation and portfolio tracking included in this phase? 3. Is your current platform built with React/Node.js, Flutter, or another stack? Send me a message and we can discuss the API options and implementation plan. Best regards, Vandini

@tradeamplify1

Hi, Your project aligns perfectly with our expertise in FinTech and trading platform development. We have a team of expert programmers with strong experience in integrating broker APIs, WebSocket market data, and paper trading solutions. With effective communication and a structured development approach, we are confident in delivering a reliable, scalable, and production-ready solution that meets your requirements. We have developed several FinTech products and trading applications. Once we connect, I'd be happy to walk you through our relevant projects and portfolio to demonstrate our experience. We look forward to discussing your project and building a long-term collaboration. Best Regards, Durgesh Pandey

@ZohaibSathio

I run a multilingual voice-banking platform for a tier-1 bank: 500K+ commands/month, 99.3% uptime, sub-800ms end-to-end over persistent WebSocket streams. Live financial data under load is what I work on daily. Three things decide whether an NSE/BSE feed holds up: 1) Broker sockets drop daily - on token expiry and at the 9:15 open surge. You need auto-reconnect with resubscribe-from-state plus a REST LTP backfill for the gap, or the chart silently shows stale prices and users assume the app is broken. 2) The real constraint is concurrent instrument subscriptions, not bandwidth - most Indian broker feeds cap them well below what a user base needs. One shared upstream connection fanning out to your users over your own socket is the only shape that scales past a few testers. 3) Depth and OHLC arrive as different packet types at different rates. Normalising them into one tick model up front, keyed on the exchange timestamp rather than server receive time, is what makes historical replay match live behaviour - which for paper trading is the whole product. I would take one broker end-to-end first (Fyers or Dhan - cleanest docs, real sandbox), prove LTP + depth streaming into your frontend, then generalise the adapter so adding Angel One or Upstox is config, not a rewrite. One question: do you already hold a broker API subscription, or does the provider recommendation need to come first? That decides the timeline more than anything else in the build.

@Gurpreetsing343

As a team adept in leveraging modern technologies to deliver high-performing digital solutions, GSINFOTECHH OPC Pvt. Ltd. is well-equipped to address your needs for a real-time Indian stock market data API integration for your paper trading application. Our deep experience in full-stack development, along with our expertise across different areas of software development, makes us the right choice for your project. Not only have we created mobile and desktop software but have also built custom software and web applications with reputed brokerage APIs such as Upstox, Zerodha & Fyers. We understand the nuances of incorporating real-time NSE/BSE market data API within a trading platform to ensure that users get seamless access to necessary details like LTP, OHLC, Volume & Market Depth they require to make informed decisions. Being well-versed in tech stacks like ReactJS, Node.js and Flutter, we assure you of delivering a powerful and market-ready product with diligent security measures. With our flexible pricing model, transparent workflow, and dedicated support, we aim for 100% client satisfaction. I believe that our collaboration would not only meet but exceed your expectations at every step. So why wait? Let's craft an amazing paper trading app together!