Documentation - developers

onboarding

chad (chad@undisclosed.example.com) — 2026-09-10T09:42:26+00:00

T4 Onboard API Introduction The onboard API endpoint provides a streamlined method for integrators to create fully functional user accounts in the T4 system with a single request. This endpoint is specifically designed for trading platform vendors who build on top of the T4 backend and handle user onboarding through their own website.

faq

chad (chad@undisclosed.example.com) — 2026-09-08T00:39:28+00:00

Legacy — V1./v1APIV2Migrating from V1 FAQ

certification

chad (chad@undisclosed.example.com) — 2026-09-08T00:39:20+00:00

Legacy — V1./v1APIV2Migrating from V1 Step 1: Start Your Certification Email: Include: A clear description of what your application will do. What happens next: * We review your submission to determine if the exchange needs to be involved. * Possible exchange review

pricing

chad (chad@undisclosed.example.com) — 2026-09-08T00:39:13+00:00

Legacy — V1./v1APIV2Migrating from V1 Pricing and Data Types The WebSocket API represents market prices using the Price type, and cash values in the Decimal type. Both of these types wrap a string value for precision and consistency across different programming languages.

orders

chad (chad@undisclosed.example.com) — 2026-09-08T00:39:06+00:00

Legacy — V1./v1APIV2Migrating from V1 Order Routing The WebSocket API provides real-time order routing, allowing clients to submit, revise, and pull orders. All order-related operations are sent within a **ClientMessage** envelope and responses are received within a **ServerMessage** envelope. Submitting an Order To submit an order, clients send an OrderSubmit message. Example OrderSubmit message:

accounts

chad (chad@undisclosed.example.com) — 2026-09-08T00:38:59+00:00

Legacy — V1./v1APIV2Migrating from V1 Account Feed The Account Feed provides real-time updates on account status, positions, and order activity. Before receiving updates, accounts must first be subscribed. Subscribing to Accounts The list of available accounts is included in the

quotes

chad (chad@undisclosed.example.com) — 2026-09-08T00:38:52+00:00

Legacy — V1./v1APIV2Migrating from V1 Quote Feed The Quote Feed provides real-time market data in two formats: Market by Price (MBP) and Market by Order (MBO). * Market by Price (MBP) – Aggregates orders at each price level, showing the best bid/offer (BBO) or a

markets

chad (chad@undisclosed.example.com) — 2026-09-08T00:38:44+00:00

Legacy — V1./v1APIV2Migrating from V1 Market Data and Definitions Introduction The Market Data API provides access to all tradable instruments and their associated definitions within the platform. This REST-based API allows you to explore available markets, retrieve instrument specifications, and access critical trading parameters.

connecting

chad (chad@undisclosed.example.com) — 2026-09-08T00:38:37+00:00

Legacy — V1./v1APIV2Migrating from V1 Connecting and Authenticating To start using the Plus500 Futures Technologies WebSocket API, clients must establish a secure WebSocket connection and authenticate before subscribing to data streams or submitting orders. WebSocket Connection

messages

chad (chad@undisclosed.example.com) — 2026-09-08T00:38:28+00:00

Legacy — V1./v1APIV2Migrating from V1 T4 Protocol Message Reference This document provides a reference for all messages in the T4 Protocol. The protocol uses Protocol Buffers (protobuf) for message serialization. Client/Server Message Envelopes All communication in the T4 Protocol is done via a pair of envelope messages:

download

chad (chad@undisclosed.example.com) — 2026-09-08T00:38:20+00:00

Legacy — V1./v1APIV2Migrating from V1 Download and Support Download The T4 API proto files and tools are available for download from our GitHub repository: * T4 API Tools on GitHub The repository primarily contains the proto files necessary for implementing the T4 API, along with supporting tooling code to help with development and integration.

websocket

chad (chad@undisclosed.example.com) — 2026-09-08T00:38:12+00:00

Legacy — V1./v1APIV2Migrating from V1 WebSocket API Introduction The WebSocket API provides a high-performance, low-latency communication channel for real-time trading data and order execution. This section introduces the key technologies used in the API: WebSockets and

api

chad (chad@undisclosed.example.com) — 2026-09-08T00:37:45+00:00

Legacy — V1./v1APIV2Migrating from V1 Plus500 Futures Technologies WebSocket API Welcome to the Plus500 Futures Technologies WebSocket API! Our API delivers high-performance, real-time market data and trading capabilities using Google Protocol Buffers (Protobuf) for ultra-efficient binary messaging. Designed for

orders

chad (chad@undisclosed.example.com) — 2026-09-08T00:06:37+00:00

Order Routing ◀ WebSocket API (V2) Prerequisite: subscribe to the account first, and hold a Trading role. Orders into an unsubscribed account are rejected. Prices and Volumes are Decimal Strings — for example “5”, “1.50”, “4200.50”. See Prices & Data Types. Client Order Messages Message Purpose OrderSubmit Place one or more orders into a single account+market.