Improve newsletter open rates through better subject lines. Use when: (1) Writing subject lines for tacosdedatos editions, (2) Analyzing why an edition had low open rates, (3) A/B testing subject line variants, (4) Reviewing subject lines before sending. Produces 5-10 variants with recommendations.
/plugin marketplace add chekos/bns-marketplace/plugin install chekos-tdd-growth-tdd-growth@chekos/bns-marketplaceThis skill inherits all available tools. When active, it can use any tool Claude has access to.
Improve tacosdedatos open rates (currently 28-33%, target 40%+).
Context: /agents/shared/tacosdedatos-growth-playbook.md for performance data.
| Pattern | Example | Performance |
|---|---|---|
| Question | "¿Nos conocemos?" | High |
| Contrarian | "A lo mejor esto de la IA sí vale la pena" | 31.84% |
| Specific/Technical | "Un minutito: Anatomía de una timestamp" | 31.78% |
| Personal | "Lo Que Ando Haciendo" | 31.4% |
| Direct benefit | "Busca lo más vital, no más" | 33.52% (best) |
Question: ¿[Surprising question about pain point]?
Contrarian: [Challenge common belief]
Specific: [Number] [things] para [benefit]
Personal: [Personal action]: [topic]
Benefit: [Achieve X] en [time/effort]
✗ "Newsletter #47" → No value proposition
✗ "INCREÍBLE TUTORIAL" → Spammy caps
✗ "¡¡¡No te lo pierdas!!!" → Desperate punctuation
✗ "¡Mola!" → Spain Spanish
✗ Over 60 characters → Gets cut off
# Subject Lines: [Edition Topic]
**Core value**: [One sentence]
## Top Picks
1. **"[Subject]"** (X chars)
Why: [Reasoning]
2. **"[Subject]"** (X chars)
Why: [Reasoning]
3. **"[Subject]"** (X chars)
Why: [Reasoning]
## All Variants
| Pattern | Subject | Chars |
|---------|---------|-------|
| Question | ... | X |
| Contrarian | ... | X |
| etc. | ... | X |
Creating algorithmic art using p5.js with seeded randomness and interactive parameter exploration. Use this when users request creating art using code, generative art, algorithmic art, flow fields, or particle systems. Create original algorithmic art rather than copying existing artists' work to avoid copyright violations.
Applies Anthropic's official brand colors and typography to any sort of artifact that may benefit from having Anthropic's look-and-feel. Use it when brand colors or style guidelines, visual formatting, or company design standards apply.
Create beautiful visual art in .png and .pdf documents using design philosophy. You should use this skill when the user asks to create a poster, piece of art, design, or other static piece. Create original visual designs, never copying existing artists' work to avoid copyright violations.