diff --git a/interfaces/wallet_interface.txt b/interfaces/wallet_interface.txt
new file mode 100644
index 0000000..7b698af
--- /dev/null
+++ b/interfaces/wallet_interface.txt
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+Interface: WalletService
+Methods:
+ - addMoney(amount)
+ - withdrawMoney(amount)
+ - checkBalance()
diff --git a/logs/logging_config.txt b/logs/logging_config.txt
new file mode 100644
index 0000000..6c7cd58
--- /dev/null
+++ b/logs/logging_config.txt
@@ -0,0 +1,5 @@
+Logging Configuration:
+ - Log all API requests and responses
+ - Log level: INFO
+ - Error logs stored in /logs/error.log
+ - Format: [timestamp] [level] [message]