# cTrader ProtoOASymbolByIdRes

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This is the markdown version of https://openbrokerapi.com/platforms/ctrader/messages/protooasymbolbyidres, written from the same records as that page.

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Returns each requested symbol with its full set of fields.

- Message: `ProtoOASymbolByIdRes`
- Interface: cTrader Open API
- Group: Symbols
- Status: verified. Source: [help.ctrader.com](https://help.ctrader.com/open-api/messages/#protooasymbolbyidres), checked 2026-10-12.
- The definition file it was checked against: https://github.com/spotware/openapi-proto-messages/blob/main/OpenApiMessages.proto

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. It is in no OpenAPI file on this site and the request builder does not list it.

## The message

- Name: `ProtoOASymbolByIdRes`
- Direction: Response, sent by the server
- Payload type: `PROTO_OA_SYMBOL_BY_ID_RES`, number `2117`. This number is what identifies the message on the wire.
- Answers: [ProtoOASymbolByIdReq](https://openbrokerapi.com/platforms/ctrader/messages/protooasymbolbyidreq)

## Fields

- `payloadType` (type ProtoOAPayloadType, optional): Identifies the message. Its default in the definition is PROTO_OA_SYMBOL_BY_ID_RES, which is number 2117.
- `ctidTraderAccountId` (type int64, required): The account the message is about, by its cTrader account id. Responses and events carry the same id, which is how a program holding several accounts on one connection tells them apart.
- `symbol` (type repeated ProtoOASymbol, optional): The symbols in full, one ProtoOASymbol for each.
- `archivedSymbol` (type repeated ProtoOAArchivedSymbol, optional): Any of the requested symbols that are archived, one ProtoOAArchivedSymbol for each.

## Limits that apply at cTrader Open API

- Requests a second, not historical data: 50 requests per second
  - Scope: Per connection, requests that are not for historical data
  - Status: verified. Source: [help.ctrader.com](https://help.ctrader.com/open-api/), checked 2026-10-12.
  - Note: Historical data requests have their own lower limit, held in a separate record.
- Requests a second, historical data: 5 requests per second
  - Scope: Per connection, historical data requests only
  - Status: verified. Source: [help.ctrader.com](https://help.ctrader.com/open-api/), checked 2026-10-12.

## Related cTrader messages: Symbols

- [ProtoOASymbolByIdReq](https://openbrokerapi.com/platforms/ctrader/messages/protooasymbolbyidreq): Asks for the full details of one or more symbols, by id.
- [ProtoOASymbolsListReq](https://openbrokerapi.com/platforms/ctrader/messages/protooasymbolslistreq): Asks for the symbols a trading account can use. Each comes back in a light form with a limited set of fields.
- [ProtoOASymbolsListRes](https://openbrokerapi.com/platforms/ctrader/messages/protooasymbolslistres): Returns the account's symbols in their light form, and archived symbols where they were asked for.

## More on cTrader

- [All cTrader messages](https://openbrokerapi.com/platforms/ctrader/messages): 49 documented here, grouped by what they do.
- [cTrader API quickstart](https://openbrokerapi.com/platforms/ctrader/quickstart)
- [All cTrader error codes](https://openbrokerapi.com/errors/ctrader)
- [cTrader API page](https://openbrokerapi.com/platforms/ctrader): The full record: access, authentication, limits and the source for each.

## Licence and how to cite

The records behind this page are all rights reserved. This file is the page itself, at its own address, in another format. It is not part of the CC BY 4.0 downloads listed at https://openbrokerapi.com/data. Quote from it with a link to the page.

Cite as: cTrader ProtoOASymbolByIdRes. Broker API Hub, https://openbrokerapi.com/platforms/ctrader/messages/protooasymbolbyidres, newest check 2026-10-12.

Where you rely on a single figure, cite the source and the checked date printed beside it as well. Where this page and a broker's own documentation differ, the documentation wins.