diff --git a/AGENTS.md b/AGENTS.md
index d4bc380..92c35fc 100644
--- a/AGENTS.md
+++ b/AGENTS.md
@@ -118,6 +118,7 @@ These are placeholders to align teams; adjust once packages exist.
 - Hybrid naming is acceptable (e.g., `use전투규칙`, `use도시상태`) when the prefix is conventional but the domain term is Korean.
 - For classes, commands, and domain logic, add clear Korean comments to support Korean readers and future maintainers.
 - Use strong type conventions in TypeScript. Any is not allowed, and you should also be careful about using unknown.
+- Avoid dangerous casting, such as `as unknown as Something`.
 
 ## Commit & Pull Request Guidelines