Broker-Independent APIs

For programmers, AutoTrader Web offers broker-independent APIs to build your own automated trading. You write your strategy once and run it across many accounts and brokers. You build and control everything, and you can stop it at any time.

What you can build

Automate your own strategy from end to end in your own code:

• Place, modify and cancel orders
• Read positions, holdings, orders and margins
• Manage many accounts and brokers together

Write once, trade on any broker

This is the idea of broker independence. Your code talks to one common API instead of a single broker’s API. To switch brokers or add more trading accounts, you change a setting — you do not rewrite or retest your strategy.

Languages and tools

Connect in the language or tool you already use:

You work in…	Use
Java, Python or C#	The client libraries
Excel	The Excel client (with an Add-in for VBA)
AmiBroker or MetaTrader	The ready-made bridges
Anything else	Plain HTTP REST

See Client Setup for step-by-step connection guides, and the API reference for every function, parameter and response format.

Getting the code written

We answer anything about our side of the API: which function does what, what a parameter expects, which values it accepts, and what an error we return means. We are not set up to read or debug a whole program, so our support assistant will say so honestly rather than guess at it.

For the code itself, use an AI coding assistant (ChatGPT, Claude, Gemini, Copilot, or whichever you use), and give it the API reference, the field values and Client Setup first — an AI that has not read them will invent function names. There is also a plain-text map of our whole documentation at stocksdeveloper.in/llms.txt that most AI tools can read in one go.

Ready-to-copy prompts, and what to check before you trade with the result, are in Can you help me write or fix my Pine Script or API code? Try any new call once with the Postman collection before you put it in code.

Where to start

• New to the idea? Read Broker Independence.
• Ready to connect? Go to Client Setup.
• Need function details? Open the API reference.

Not a programmer? See Choose Your Feature for the ready-made ways to trade many accounts.