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TradeZero Developer Portal

Start building with TradeZero

REST and WebSocket APIs for stocks, options, and short locates. Connect your own application to the same endpoints that power TradeZero - authenticate once, place and manage your orders, and stream your portfolio in real time, on paper or live.

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Launchpad

Everything you need to go from API key to working code.

Quick Start

Step-by-step recipes from your first API call through order placement, multi-leg options spreads, locates, and WebSocket streams - in Python and TypeScript.

Get your API key

Generate credentials in the TradeZero Portal and authenticate your first request.

Short Locates

Quote, accept, and sell back short-locate inventory over the REST API (live accounts only).

Options Trading

Place single- and multi-leg options orders, browse OCC chains, and manage option positions over the same REST and WebSocket API.