diff --git a/.gitignore b/.gitignore
index f58e1a4..18e8530 100644
--- a/.gitignore
+++ b/.gitignore
@@ -12,3 +12,6 @@ wheels/
 
 # Virtual environments
 .venv
+
+# Environment variables file
+.env
\ No newline at end of file
diff --git a/mcp-client-python/.env.example b/mcp-client-python/.env.example
new file mode 100644
index 0000000..80a79e6
--- /dev/null
+++ b/mcp-client-python/.env.example
@@ -0,0 +1 @@
+ANTHROPIC_API_KEY=
\ No newline at end of file