{"slug":"aaron-he-zhu-subject-line-lab","source_name":"aaron-he-zhu/subject-line-lab","name":"Aaron He Zhu/Subject Line Lab","description":"Use when the user asks to \"generate subject line variants\", \"pre-score my subject lines\", or \"will this subject get truncated / trigger spam filters\"; produces a labeled subject + preheader variant set and a per-variant heuristic pre-score card — spam-trigger flags, length/truncation across desktop + mobile, emoji-count, and the inbox preview render (from-name + subject + preheader) — before any test is run. Not for the body copy or CTA — use email-creative-builder; not for the A/B test design o","version":1,"lift":{"pass_rate_delta_pts":54.55,"pass_rate_pct":77.3,"total_cases":22,"passed_cases":17,"tokens_delta_pct":167,"turns_delta_pct":0,"verdict":"mixed","benchmark_model":"gemini-3.6-flash","grading_method":"judged","completed_at":"2026-08-13T06:52:18.205075+00:00"},"skill_score":0.7727,"benchmark_models":[{"model":"gemini-3.6-flash","headline":true,"delta_pts":54.55,"with_pass_pct":77.3,"without_pass_pct":22.7,"tokens_delta_pct":167,"turns_delta_pct":0,"total_cases":22,"cases_aggregated":22,"verdict":"mixed","never_hurt":false,"completed_at":"2026-08-13T06:52:18.205075+00:00","run_id":"d06d4044-bfea-4a19-a8cb-6ddcdd8436e8","version_number":1,"is_latest_version":true,"gate":null}],"trust":{"skill_safety":"passed","safety_status":"clean","intent_verdict":"safe","content_status":"clean","indexable":true},"license":"Apache-2.0","install_count":0,"manifest_hash":"4735a2ba9f85302418bc828408cf41e50a4c57064c1cb1cb0a75a609c7397271","raw_url":"https://app.decimal.ai/s/aaron-he-zhu-subject-line-lab/SKILL.md","scorecard_url":"https://app.decimal.ai/skills/aaron-he-zhu-subject-line-lab"}