48 broker, exchange and data API guides

Trading Platform & Market Data APIs for Algo Trading

How each trading API works, what it costs, its limits, and exactly how to create its API key — for developers and the coding agents they use. Then build on the ones you already have accounts with: AlgoGP turns a strategy idea into tested Python wired to your broker.

Build a trading bot free Compare APIs

Free Free plan

Built-in adapters for 5 platforms: Alpaca, Binance, Coinbase Exchange, Yahoo Finance, Alpha Vantage. News and sentiment sources are on every plan.

Pro Pro plan

All 17 built-in broker and data adapters, frontier AI copilots and 200 backtests a day. See pricing.

Stock & options brokers

Brokers with APIs for US and global stocks, ETFs and options, from API-key REST to OAuth and desktop gateways.

Crypto exchanges

Centralized and on-chain crypto venues for spot, perpetuals and options.

Forex & CFD brokers

Forex and CFD brokers whose APIs trade and stream currencies, indices and commodities.

  • OANDA API
    Built into AlgoGP Pro

    Regulated forex and CFD broker whose v20 REST API serves both orders and candles, with a free demo account.

    BrokerMarket dataForexCFDsIndices API key

    Free API with an account

    API guide Get an API key Build with it
  • Saxo OpenAPI
    Guide

    The API behind SaxoTraderGO: multi-asset trading in stocks, ETFs, options, futures, FX and CFDs, with a simulation environment.

    BrokerMarket dataStocksETFsOptionsFuturesForexCFDsBonds API key

    API free; non-FX market data needs entitlements

    API guide Get an API key Build with it
  • IG API
    Guide

    Regulated CFD, spread-betting and FX broker with a REST trading API, Lightstreamer streaming and a demo account.

    BrokerMarket dataForexCFDsIndicesStocksOptions API key

    API free; 10k historical points/week

    API guide Get an API key Build with it
  • cTrader Open API
    Guide

    Spotware’s API for cTrader brokers: FX and CFD trading and data over TCP or WebSocket, JSON or Protobuf, with OAuth.

    BrokerMarket dataForexCFDsIndicesCrypto API key

    API free; broker spreads/commissions apply

    API guide Get an API key Build with it

Futures platforms

Web-native futures APIs and the professional routing stacks prop firms run on.

  • Tradovate API
    Guide

    Cloud futures broker with a REST and WebSocket API, a demo host and token-based authentication.

    BrokerMarket dataFutures API key

    API Access add-on; live needs >$1,000 equity

    API guide Get an API key Build with it
  • Rithmic API
    Guide

    Low-latency futures order routing and market data used by prop firms, through C++/.NET SDKs and R|Protocol.

    BrokerMarket dataFutures No key needed

    Commercial; via your FCM or prop firm

    API guide Build with it
  • CQG API
    Guide

    Institutional futures and derivatives connectivity: WebAPI over secure WebSocket with Protobuf, plus FIX.

    BrokerMarket dataFuturesOptions No key needed

    Commercial; exchange entitlements extra

    API guide Build with it

Prediction markets

Event-contract exchanges where a forecast becomes a tradable probability.

Market data APIs

Historical and real-time prices, fundamentals and tick data for backtests and live trading.

Crypto data APIs

Aggregated crypto prices, order books and on-chain metrics across venues.

News, social & sentiment

Headlines, posts and crowd mood, scored into signals a strategy can filter on.

Enterprise data terminals

Institutional terminals and feeds: what they offer and how developers access them.

  • Bloomberg API (BLPAPI)
    Guide

    Bloomberg’s enterprise data: BLPAPI for Terminal and B-PIPE, plus Data License for reference and history.

    Market dataStocksBondsFuturesForexOptionsFundamentals No key needed

    Enterprise contracts

    API guide Build with it
  • LSEG Data (Refinitiv) API
    Guide

    LSEG Real-Time and Data Platform (formerly Refinitiv/Eikon): global multi-asset real-time and tick history.

    Market dataStocksBondsFuturesForexOptionsFundamentals No key needed

    Enterprise contracts

    API guide Build with it
  • FactSet APIs API
    Guide

    FactSet’s developer APIs for prices, fundamentals, estimates, tick history and news, for licensed clients.

    Market dataStocksBondsFundamentalsNews No key needed

    Enterprise contracts

    API guide Build with it

Platforms & "does it have an API?"

Platforms people search an API for, renamed or retired APIs, and how to automate them.

  • NinjaTrader API
    Guide

    Futures trading platform with NinjaScript (C#) and an Automated Trading Interface, not a cloud REST trading API.

    PlatformFuturesForex No key needed

    Platform free to use; licenses optional

    API guide Build with it
  • TradingView API
    Guide

    No public trading or data API: automate with Pine Script alerts sent to your own webhook, which then calls a broker API.

    PlatformStocksCryptoForexFutures No key needed

    Webhooks need a paid plan

    API guide Build with it
  • Robinhood API
    Guide

    An official API exists only for Robinhood Crypto trading; there is no official stock or options trading API.

    PlatformCryptoStocks No key needed

    Crypto API free; trading spreads apply

    API guide Build with it
  • Fidelity API
    Guide

    Fidelity offers no public retail trading API. Here is what exists, the risks of unofficial routes, and the alternatives.

    PlatformStocksETFsOptions No key needed

    No retail API

    API guide Build with it
  • IEX Cloud API
    Guide

    IEX Cloud shut down in August 2024. What it offered, and which APIs replace it for prices, fundamentals and news.

    PlatformStocksFundamentals No key needed

    Discontinued (August 2024)

    API guide Build with it

Trading API comparisons

How to choose a trading API

Start where your account is

If you already hold an account at a broker or exchange, use its API: it sees the same balances and positions as its app.

Check how it authenticates

API-key REST takes minutes. OAuth needs a browser login and token refresh; gateways need a running desktop process; wallet or RSA signing needs an SDK.

Paper trade first

Use the paper, testnet or demo environment until the bot has run for weeks without surprises, then go live small.

Product names and trademarks belong to their owners; AlgoGP is not affiliated with or endorsed by any platform listed. Limits and prices change — check each provider’s documentation before relying on them. A machine-readable index of these guides is at /llms.txt.