diff --git a/crates/openfang-runtime/src/drivers/openai.rs b/crates/openfang-runtime/src/drivers/openai.rs
index b1203927..23fea814 100644
--- a/crates/openfang-runtime/src/drivers/openai.rs
+++ b/crates/openfang-runtime/src/drivers/openai.rs
@@ -25,7 +25,10 @@ impl OpenAIDriver {
         Self {
             api_key: Zeroizing::new(api_key),
             base_url,
-            client: reqwest::Client::new(),
+            client: reqwest::Client::builder()
+                .user_agent("OpenFang/1.0")
+                .build()
+                .unwrap_or_else(|_| reqwest::Client::new()),
             extra_headers: Vec::new(),
         }
     }