diff --git a/AGENTS.md b/AGENTS.md
index e1efd36..56aca43 100644
--- a/AGENTS.md
+++ b/AGENTS.md
@@ -43,3 +43,9 @@ This package neither sends nor receives SMTP.
 ```sh
 bun install && bun run check
 ```
+
+## Conventions
+
+- Read `README.md` before changing public behavior.
+- Keep changes focused; update docs and tests alongside code changes.
+- Run `bun run check` before declaring work complete.