cTrader ProtoOAVersionReq
Asks the server for its version, which the definition says can be used to check the current version of the Open API scheme.
Risk warning: CFDs and spread bets are complex instruments and come with a high risk of losing money rapidly due to leverage. You can lose money on these products, and each provider publishes its own loss figure under FCA rules. You should consider whether you understand how they work and whether you can afford to take the high risk of losing your money. Automated and API trading can amplify losses through bugs, connectivity failures and runaway orders.
This is a message of the cTrader Open API, not an HTTP endpoint. It has no method and no path: it is sent over an open TCP or WebSocket connection, as Protocol Buffers or as JSON.
The message
- Name
- ProtoOAVersionReq
- Direction
- Request, sent by the client
- Payload type
- PROTO_OA_VERSION_REQ, number 2104. This number is what identifies the message on the wire.
- Answered by
Fields
| Name | Type | Description |
|---|---|---|
| payloadType | ProtoOAPayloadType | Identifies the message. Its default in the definition is PROTO_OA_VERSION_REQ, which is number 2104. |
Sample
Written by this site from the payload type and fields recorded on this page. It has not been run against a terminal, a server or an account, and the values in it are placeholders. No credential is typed into it: where a field holds one, the placeholder says where it comes from. Nothing is entered on this site.
The three outer keys, clientMsgId, payloadType and payload, are the ones Spotware's page on sending and receiving JSON gives. The sample holds the message's required and repeated fields and leaves the optional ones out. help.ctrader.comchecked
{
"clientMsgId": "msg-1",
"payloadType": 2104,
"payload": {}
}Limits that apply at cTrader Open API
| Limit | Value | Scope | Source |
|---|---|---|---|
| Requests a second, not historical data | 50 | Per connection, requests that are not for historical data | help.ctrader.comchecked |
| Requests a second, historical data | 5 | Per connection, historical data requests only | help.ctrader.comchecked |