diff --git a/.claude/skills/review-api/SKILL.md b/.claude/skills/review-api/SKILL.md
index 20479c0f98..129e8a5780 100644
--- a/.claude/skills/review-api/SKILL.md
+++ b/.claude/skills/review-api/SKILL.md
@@ -106,6 +106,7 @@ Read `.claude/ADVICE.md` for reference rules.
 - [ ] `static styles = [styles]` array form?
 - [ ] Controllers for cross-cutting concerns?
 - [ ] `isServer` guards on browser-only APIs?
+- [ ] Quoting attribute values in Lit templates `src="{$this.src}"`?
 
 #### Lint
 ```bash