diff --git a/_oak_mods/NoDuplicateCosmetics.md b/_oak_mods/NoDuplicateCosmetics.md
new file mode 100644
index 0000000..0329113
--- /dev/null
+++ b/_oak_mods/NoDuplicateCosmetics.md
@@ -0,0 +1,11 @@
+---
+pyproject_url: https://raw.githubusercontent.com/Last1SiN/NoDuplicateCosmetics/refs/heads/main/NoDuplicateCosmetics/pyproject.toml
+---
+
+NoDuplicateCosmetics prevents already-owned cosmetics in Borderlands 3 from being selected again while preserving the game's native, source-local loot behavior. It filters supported owned cosmetics before native loot selection, keeps mixed gear + cosmetic pools on the stock resolver path, and lets exhausted cosmetic-only branches produce no cosmetic instead of replacing them with unrelated loot.
+
+## Credits
+
+- **Development:** Sol / GPT-5.6 Sol
+- **Design, testing & QA:** Last1SiN
+- **BL3 PythonSDK / Oak Mod Manager:** created by [apple1417](https://github.com/apple1417), with contributions from the [BL-SDK](https://github.com/bl-sdk) project and contributors.