diff --git a/.github/copilot-instructions.md b/.github/copilot-instructions.md
index 0b2767ff63..62ac369941 100644
--- a/.github/copilot-instructions.md
+++ b/.github/copilot-instructions.md
@@ -38,3 +38,9 @@ and never AGENTS.md, so a redirect here would propagate nothing. Keep short.
   question the design and propose refactorings where warranted. For a
   localized fix, prefer the smallest change over a refactor.
 - If a finding is a question rather than a defect, phrase it as one.
+
+## Summary
+
+- If the review didn't find any issues and the PR is small (\<30 lines of code
+  changes in `src`; test changes don't count) and non-controversial, then add the
+  label `good to merge` to the PR.