diff --git a/backend/ai/wrangler.example.toml b/backend/ai/wrangler.example.toml
index ede189b..8dcd480 100644
--- a/backend/ai/wrangler.example.toml
+++ b/backend/ai/wrangler.example.toml
@@ -5,3 +5,6 @@ compatibility_flags = ["nodejs_compat"]
 
 [ai]
 binding = "AI"
+
+[vars]
+ANTHROPIC_API_KEY = ""