What problem does it solve? Writing a newsletter issue that subscribers actually open, read to the bottom, and forward is hard — most issues bury the story, stack multiple CTAs, and ship without any growth plan. This Skill turns a weekly idea into a validated, ready-to-send editorial newsletter pack with the growth engine built in. ## Core Features & Use Cases - Story-first issue writer: issue-writer.mjs assembles an issue from a plan JSON — subject line (≤60 chars, one proven formula), open loop → rising stakes → payoff, value receipts, ONE CTA, ONE growth plug — and exits 1 on any validation failure. - Growth plan generation: ships growth-plan.md covering the 5-email welcome sequence, referral loop, cross-promos, and a day-7/14/30 analytics review. - Two-stage audit harness: audit-newsletter.mjs runs automated checks (subject length, story spine, anti-fluff blocklist, word window 350–900, specificity) then a fresh newsletter-auditor subagent scores issue worthiness /50 and signs PASS or FIX NEEDED before send. - Use Case: A SaaS founder needs this week's Beehiiv issue. Provide the topic, audience, voice, and one CTA; receive issue.md, growth-plan.md, and a signed newsletter-audit.md ready to paste into the ESP. ## Quick Start Ask the agent to write this week's story-first newsletter issue about your chosen topic with one CTA, then run the audit harness before sending.