UK stock market API

Real-time UK stock market API with WebSocket, OHLCV, and snapshot endpoints for LSE.

Build With United Kingdom Market Data

Kun Data provides a token-authenticated API stack for developers who need United Kingdom market data in products that must load fast, stream live prices, and support charting or screening workflows.

This repository is focused on United Kingdom coverage with support for LSE, LSIN and is designed for teams building broker dashboards, watchlists, quant tools, stock screeners, mobile apps, and market overview pages.

Common Integration Needs

Most teams integrating market data need one or more of these capabilities:

• Real-time United Kingdom stock market API
• WebSocket streaming quotes
• Historical OHLCV or candlestick data
• Snapshot data for market movers, rankings, and watchlists
• Coverage for LSE, LSIN

What You Get

Capability	What it is used for
Real-time WebSocket API	Live prices, incremental updates, ticker streams, dashboard refreshes
Historical OHLCV API	Charts, backfill, analytics, historical candles, K-line data
Exchange snapshot API	Watchlists, overview pages, leaderboard modules, quote batches
Token-based auth	Access control for HTTP and WebSocket integrations
Market and exchange filters	Query by market, exchange or venue, symbol, and symbols

Product Fit

This API model is suitable for:

• Trading dashboards
• Market overview products
• Watchlists and screeners
• Broker or internal finance tools
• Mobile investing apps
• Quant research and monitoring systems

Coverage

Supported exchanges for this repository:

• LSE
• LSIN

Primary market code:

• GB

Integration Pattern

The current API stack follows a straightforward model:

• Use a token for authenticated access
• Use HTTP for initialization and historical backfill
• Use the snapshot endpoint for batched market views
• Use WebSocket for live market updates after the first page load

Technical Notes

• Historical requests use a single symbol in EXCHANGE:TICKER format
• Historical candles support interval and count
• Snapshot requests support market, venue, symbol, symbols, ticker, and tickers
• WebSocket subscriptions support market-wide, exchange-level, and symbol-level subscriptions
• HTTP requests can use bearer authentication and WebSocket connections use token query auth

Links

• Website: https://kun.pro/stocks-en.html
• Docs: https://kun.pro/docs-en.html
• Main site: https://kun.pro

FAQ

Does this support real-time United Kingdom market data?

Yes. The API stack includes WebSocket streaming for live price updates and realtime market refresh workflows.

Does this include historical candles or OHLCV data?

Yes. Historical market data supports candle-based retrieval for charting, analytics, and backfill use cases.

Can I query by exchange or symbol?

Yes. The available endpoints support filtering by market and exchange, and symbol-level queries are supported where documented.

What kind of products is this repository targeting?

It is aimed at developers building charting products, watchlists, screeners, financial dashboards, market overview pages, and other applications that need structured market data.

Evaluate The API

If you need United Kingdom market data coverage for LSE, LSIN, start with the product page and documentation:

• Product access: https://kun.pro/stocks-en.html
• Developer docs: https://kun.pro/docs-en.html