The study, was created based on the fact that manually execute an order causes latency and the price cannot be reached in cases where financial markets news affects price formation. The CBRT Interest Rate Decision was followed instantly via the web service published by the CBRT in XML and JSON formats. It has been integrated into the MetaTrader 4 platform with the output of the algorithm created through .Net, DLL and MQL4 software languages. Simultaneously, automated trading order was created in the USDTRY parity selected on the platform through the expert advisor. All parameters are configured to be determined by the user. For the study, the CBRT's Monetary Policy Committee decision dated as 17 June 2021 and the press release on interest rate were taken as reference. The study was created in 5 stages. First stage; with the announcement of the CBRT's interest rate decision, access to the web service was provided. Second stage; an algorithmic interface was created with .Net and CBRT web service access was provided. Third stage; DLL and .Net algorithm – MetaTrader platform communication has been established. Fourth stage; the algorithm was triggered by analyzing the data coming from the DLL via the MetaTrader expert advisor. Fifth stage; an order has been opened in USDTRY parity, depending on the necessary parameter conditions of the expert advisor. The event-based algorithm yielded successful results depending on the CBRT's interest rate decision.