diff --git a/.changeset/structured-output-provider-format.md b/.changeset/structured-output-provider-format.md
new file mode 100644
index 000000000..625fb130a
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+++ b/.changeset/structured-output-provider-format.md
@@ -0,0 +1,5 @@
+---
+"@moonshot-ai/kosong": patch
+---
+
+Add provider-level structured response format support.