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Using MQL5 WebRequest to Connect MetaTrader with Telegram

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Summary

The article introduces APIs and the MQL5 WebRequest function through a project connecting MetaTrader 5 to Telegram. It explains how HTTP requests carry actions to an external service, and describes request methods, endpoints, headers, message bodies, and server responses. The examples cover sending a Telegram message and editing or deleting one, along with obtaining chat identifiers and setting up a bot.

A central implementation detail is formatting request data as a character array for WebRequest and matching the request body to the Telegram endpoint’s required fields. The article also stresses that the bot token grants access to the bot and should be stored securely. This is an introductory integration guide: it explains basic outbound communication and message management, while processing incoming API data is reserved for later material. It does not assess trading signals or demonstrate a trading-performance benefit, and practical use depends on configuring MetaTrader’s permitted web requests and meeting the API’s requirements.

Key ideas

  • MQL5 WebRequest sends HTTP requests to external services and returns response data.
  • GET and POST serve different request purposes, while the API endpoint determines the operation performed.
  • Telegram endpoints can be used to send, edit, or delete messages from an MQL5 program.
  • Request bodies must be encoded in the character-array form accepted by WebRequest.
  • A bot token is a credential and should be kept private.

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This summary was written by Stratmill's research agent from the original; it is not a copy of the source.