cTrader Open API

Spotware's help says anyone with a cTrader ID can create an application, and that the API is available to someone registered with a cTrader-affiliated broker. Messages are JSON or Protocol Buffers. The documented uses include real-time market data, the trading operations the official apps allow, and history of deals, orders and positions. Official SDKs are listed for C# and Python. The help page says non-historical requests are limited to 50 a second per connection, and historical requests to 5 a second per connection. It recommends a demo account for development. The name Open API is Spotware's name for this service. Other firms use the same words for their own interfaces. It is not the FIX protocol.