diff --git a/AGENTS.md b/AGENTS.md
index 3196088f..b71720cb 100644
--- a/AGENTS.md
+++ b/AGENTS.md
@@ -60,7 +60,9 @@ Use these sections under `## [Unreleased]`:
 - `### Removed` - Removed features
 
 ### Rules
+- Before adding entries, read the full `[Unreleased]` section to see which subsections already exist
 - New entries ALWAYS go under `## [Unreleased]` section
+- Append to existing subsections (e.g., `### Fixed`), do not create duplicates
 - NEVER modify already-released version sections (e.g., `## [0.12.2]`)
 - Each version section is immutable once released