diff --git a/static/api-specs/toolhive-api.yaml b/static/api-specs/toolhive-api.yaml
index 7038d46b..52cac119 100644
--- a/static/api-specs/toolhive-api.yaml
+++ b/static/api-specs/toolhive-api.yaml
@@ -734,6 +734,10 @@ components:
         debug:
           description: Debug indicates whether debug mode is enabled
           type: boolean
+        env_file_dir:
+          description: EnvFileDir is the directory path to load environment files
+            from
+          type: string
         env_vars:
           additionalProperties:
             type: string