StealIt
Corey HainesClaude skill for marketing

SMS

sms

When the user wants to plan, build, or optimize SMS, MMS, or WhatsApp marketing — including welcome flows, abandoned cart texts, post-purchase, win-back, promotional sends, or transactional/auth SMS. Also use when the user mentions "SMS marketing," "text message campaigns," "SMS sequence," "SMS automation," "abandoned cart text," "post-purchase SMS," "Klaviyo SMS," "Postscript," "Attentive," "Twilio," "A2P 10DLC," "TCPA," "SMS compliance," "short code," "toll-free SMS," "MMS campaign," "should I do SMS," "SMS vs email," "WhatsApp marketing," "WhatsApp Business API," "WhatsApp templates," or "click-to-WhatsApp." For email sequences, see emails. For SMS copy framing, see copywriting. For opt-in popups that capture phone numbers, see popups.

Install

Run this in your project folder. It works with Claude Code, Cursor, Codex and dozens of other agents.

$ npx skills add coreyhaines31/marketingskills --skill sms

Needs Node.js. Add -g to install for every project, or -a claude-code to skip the agent picker.

How to use SMS

Once it's installed, Claude reads this skill on its own whenever a request matches what it's for, so you don't have to mention it by name. In Claude Code you can also run it directly by typing /sms.

It contains no scripts, only instructions and reference files, so it can't run code on its own.

What the instructions cover

  1. 1Before Starting
  2. 2When SMS Beats Email
  3. 3WhatsApp
  4. 4Compliance — Read First
  5. 5Phone Number Types (US)
  6. 6Core Principles
  7. 7SMS Sequence Types
  8. 8SMS Copy Guidelines
  9. 9Platform Selection
  10. 10Measurement
  11. 11Output Format
  12. 12Task-Specific Questions

Section headings from the skill's SKILL.md file.

What's inside · 6 files

  • SKILL.md
  • evals/evals.json
  • references/compliance.md
  • references/platforms.md
  • references/sequence-templates.md
  • references/whatsapp.md

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