diff --git a/README.md b/README.md
index 24a3243..c893867 100644
--- a/README.md
+++ b/README.md
@@ -51,6 +51,16 @@ families, and the exact-texture Hegemony banner collection.
 - [`previews/`](previews/) — lightweight Git-tracked visual catalogues
 - [`scripts/`](scripts/) and [`tests/`](tests/) — fail-closed release verification
 
+## Creation disclosure
+
+Most assets in this archive were substantially authored, prepared, or refined
+with Codex using OpenAI's GPT-5.6 Sol model at Ultra reasoning effort, under
+human direction and review. Some individual assets also use other tools or
+generation services; each set's dated provenance record remains the source of
+truth for its specific production history. This disclosure describes the
+creation process only. It does not change any license, ownership, attribution,
+or trademark boundary.
+
 ## License
 
 Warpkeep-Assets is a mixed-license archive. The repository's project-authored
diff --git a/tests/test_repository_licensing.py b/tests/test_repository_licensing.py
index f1d9954..9af8e24 100644
--- a/tests/test_repository_licensing.py
+++ b/tests/test_repository_licensing.py
@@ -6,6 +6,13 @@
 
 
 class RepositoryLicensingTests(unittest.TestCase):
+    def test_creation_disclosure_is_visible_without_changing_license_scope(self) -> None:
+        readme = (ROOT / "README.md").read_text(encoding="utf-8")
+
+        self.assertIn("## Creation disclosure", readme)
+        self.assertIn("GPT-5.6 Sol model at Ultra reasoning effort", readme)
+        self.assertIn("does not change any license", readme)
+
     def test_mixed_license_map_keeps_asset_exceptions_explicit(self) -> None:
         license_map = (ROOT / "LICENSE").read_text(encoding="utf-8")