{
  "markdown": "# Giulio's Claude Code Skills Collection\n\nA curated collection of Claude Code skills for developers, marketers, and founders. Install with a single command to extend Claude's capabilities with specialized knowledge and workflows.\n\n## Quick Start\n\nInstall all skills:\n```bash\nnpx add-skill giulioco/skills\n```\n\nInstall specific skills only:\n```bash\nnpx add-skill giulioco/skills --skill social-growth-engineer\n```\n\n## Available Skills\n\n### 🎨 nano-banana-prompt\n\nMaster prompt engineering for Nano Banana Pro (Gemini) image generation.\n\n**What it does**: Comprehensive guide for crafting highly effective prompts for Nano Banana Pro. Provides proven patterns, technical specifications, JSON structuring, and identity preservation techniques based on analyzing 60+ successful prompts.\n\n**Use when**:\n- Generating photorealistic portraits\n- Creating product photography and e-commerce mockups\n- Building creative experiments (3D renders, dioramas, surreal effects)\n- Crafting era-specific aesthetics (Y2K, 2000s, 1990s)\n- Editing and transforming images\n- Preserving facial identity across transformations\n\n**Knowledge includes**:\n- Identity preservation techniques\n- Technical specifications (cameras, lenses, lighting, film stocks)\n- 5 comprehensive reference guides (photorealism, creative experiments, product/commercial, editing, JSON templates)\n- Era-specific templates (2000s mirror selfie, Y2K scrapbook, 1990s flash photography)\n- Quick reference templates for common use cases\n- Advanced techniques (multi-element scenes, negative prompts, text integration)\n\n**Size**: 38 KB (SKILL.md + 5 reference files)\n\n[View Details →](skills/nano-banana-prompt/)\n\n---\n\n### 🚀 social-growth-engineer\n\nMaster viral app growth through organic social media marketing.\n\n**What it does**: Teaches Claude everything about growing consumer apps virally through TikTok, Instagram Reels, and YouTube Shorts. Based on analyzing 100+ successful app launches generating billions of views and millions in monthly revenue.\n\n**Use when**:\n- Launching or growing a consumer app\n- Creating viral content strategies\n- Building UGC ambassador networks\n- Optimizing monetization and conversion\n- Analyzing competitor growth tactics\n\n**Knowledge includes**:\n- 100+ real case studies with verified metrics ($10K to $5.5M ARR)\n- 50+ proven hook formulas\n- 30+ video format templates\n- Platform-specific tactics (TikTok, Instagram, YouTube)\n- Niche playbooks (study apps, dating, fitness, Bible, AI companions, travel)\n- Complete growth frameworks and scaling strategies\n\n**Size**: 91 KB (SKILL.md + 3 reference files)\n\n[View Details →](skills/social-growth-engineer/)\n\n---\n\n### 📊 growth-hacker\n\nDiagnose the real growth bottleneck and prescribe the next move, using the unified frameworks from three foundational growth books.\n\n**What it does**: Synthesizes Ryan Holiday's *Growth Hacker Marketing*, Sean Ellis & Morgan Brown's *Hacking Growth*, and Weinberg & Mares' *Traction* into a single diagnostic + prescriptive system. Refuses to recommend tactics before diagnosing the stage — \"founders pick the channel they're comfortable with, not the one their stage needs\" is the #1 growth mistake.\n\n**Use when**:\n- Stuck at a revenue plateau and not sure why\n- Choosing between marketing channels\n- Diagnosing a leaky funnel (low conversion, low activation, low retention)\n- Searching for product-market fit\n- Designing a viral loop or referral program\n- Picking a North Star metric or growth equation\n- Running a weekly growth-experiment cycle (ICE scoring)\n\n**Knowledge includes**:\n- 4-level diagnostic model (PMF → Aha → Channel → Optimization)\n- Sean Ellis 40% test (with the 5 companion questions verbatim)\n- Aha-moment thresholds from Facebook, Twitter, Slack, Dropbox, Uber, Instagram, eBay\n- The Growth Equation (Inman, eBay, Amazon examples)\n- Activation playbook (HubSpot Sidekick's 11→12 experiments, Etsy, Tinder)\n- Retention playbook (smile graph, cohort analysis, three phases)\n- Engineered virality (Holiday's principles + viral math K = i × c)\n- The full 19-channel Bullseye taxonomy with $1k test design per channel\n- Weekly growth cycle + ICE scoring (verbatim Ellis methodology)\n- Mindset quotes from Holiday, Andreessen, Thiel, Ellis, Andrew Chen\n\n**Size**: ~80 KB (SKILL.md + 9 reference files + 19 channel deep-dives)\n\n[View Details →](skills/growth-hacker/)\n\n---\n\n### 💼 ultimate-sales\n\nMaster sales coaching skill synthesizing six foundational books into a single working system.\n\n**What it does**: Distills *SPIN Selling* (Rackham), *Fanatical Prospecting* (Blount), *Gap Selling* (Keenan), *The Challenger Sale* (Dixon & Adamson), *Never Split the Difference* (Voss), and *How to Win Friends & Influence People* (Carnegie) into a stage-aware sales coach. Diagnoses where you are in the journey first, then prescribes the right move from the right book — most sales failures come from using a small-sale tactic in a big-sale context, pitching before diagnosing, or arguing instead of asking.\n\n**Use when**:\n- Drafting cold emails, DMs, follow-ups, or any outbound outreach\n- Preparing for or reviewing discovery calls, demos, or QBRs\n- Handling pricing pushback, objections, or stalled deals\n- Negotiating contracts, terms, or salary\n- Planning ICP, messaging architecture, channel sequencing, or pipeline math\n- Coaching reps or being coached\n- Reviewing your own sales messaging\n\n**Knowledge includes**:\n- The diagnose-first sales loop (5-question pre-flight check before any tactic)\n- SPIN question arsenal (Situation / Problem / Implication / Need-payoff) with example banks\n- Gap Selling Problem Identification Chart (PIC) for pre-call planning\n- Challenger 6-step Commercial Teaching choreography (Warmer → Reframe → Rational Drowning → Emotional Impact → New Way → Solution)\n- Voss tactical empathy toolkit (mirroring, labeling, accusation audit, calibrated questions, Ackerman bargaining model, \"no\"-oriented framing)\n- Blount prospecting playbook (30-Day Rule, Golden Hours, 5-step phone framework, voicemail framework, RBO turnarounds, combo prospecting)\n- Carnegie influence principles cross-walked to modern sales (where Carnegie holds, where modern research overrides)\n- 12+ verbatim email templates (cold outbound, follow-up, re-engagement, pricing, internal)\n- 20+ verbatim phone scripts and objection turnarounds\n- Voss one-page negotiation prep template\n- Full extracts of all six books (~4,200 lines) for deep reference\n\n**Size**: ~280 KB (SKILL.md + 6 frameworks + 3 asset packs + 6 book extracts)\n\n[View Details →](skills/ultimate-sales/)\n\n---\n\n### 📈 postbridge-social-growth\n\nOrganic growth coach using the Post Bridge methodology.\n\n**What it does**: Acts as a personalized organic growth coach for apps, products, and businesses seeking traffic from TikTok and Instagram short-form video. Based on the Post Bridge system that generated 500M+ views, 132K+ downloads, and $33K+ revenue with zero paid ads.\n\n**Use when**:\n- Starting organic social media growth from scratch\n- Warming up new TikTok/Instagram accounts\n- Finding winning content formats (content-market fit)\n- Converting views into app downloads or customers\n- Writing conversion-optimized social media bios\n- Riding trends for momentum\n- Scaling to multiple accounts and platforms\n\n**Knowledge includes**:\n- Complete 30-day growth roadmap\n- 7-day account warmup protocol\n- Content-market fit testing framework\n- Conversion funnel optimization (views → downloads)\n- Trend identification and adaptation playbook\n- Three-phase scaling framework\n- Bio writing formulas and CTA strategies\n\n**Size**: 12 KB (SKILL.md + 1 reference file)\n\n[View Details →](skills/postbridge-social-growth/)\n\n---\n\n### ✍️ galloway-storytelling\n\nRewrite any writing to be more engaging using Scott Galloway's (Prof G) storytelling playbook.\n\n**What it does**: Sharpens flat, dry, or forgettable writing into punchy, story-driven prose using a small set of named, teachable moves — the Wow Test, Data Elevation, the Hook, Assume Intimacy, More Drama, and Zoom Out. Edits by cutting and elevating, not by adding words, and hands back both the rewrite and a short rationale naming which moves were applied.\n\n**Use when**:\n- A newsletter, LinkedIn/X post, or build-in-public update feels flat\n- A draft opens with throat-clearing or buries its best line\n- Big numbers land as abstractions (\"$320B is huge\") instead of feelings\n- A pitch, cold email, launch announcement, or landing-page copy needs punch\n- You want to learn the craft, not just get an edit — each rewrite names the technique\n\n**Knowledge includes**:\n- The six core Galloway moves, each with a rule, a why, and worked examples\n- The four Data Elevation yardsticks (time, size, familiar object, baseline)\n- The six Hook types and a warm-up detector for buried ledes\n- The Assume Intimacy \"kill list\" of hedges and filler\n- An extended reference: the Crocs Test, Anchored Provocation, Vulnerability, Visualization, with Galloway's exact quotes and sources\n\n**Size**: ~15 KB (SKILL.md + 1 reference file)\n\n[View Details →](skills/galloway-storytelling/)\n\n---\n\n## Installation\n\n### Install All Skills\n\n```bash\nnpx add-skill giulioco/skills\n```\n\nThis installs all skills in the collection to your `~/.claude/skills/` directory.\n\n### Install Specific Skills\n\nList available skills first:\n```bash\nnpx add-skill giulioco/skills --list\n```\n\nThen install only what you need:\n```bash\nnpx add-skill giulioco/skills --skill social-growth-engineer\n```\n\n### Install Globally\n\n```bash\nnpx add-skill -g giulioco/skills\n```\n\n### Non-Interactive Mode\n\n```bash\nnpx add-skill giulioco/skills -y\n```\n\n## Usage\n\nOnce installed, skills are available in Claude Code:\n\n### Automatic Invocation\n\nClaude automatically activates skills when you ask relevant questions:\n\n```\nHow do I grow my app virally?\nWhat hooks work for dating apps?\nHelp me launch in 30 days\n```\n\n### Manual Invocation\n\nInvoke a skill manually with slash commands:\n\n```\n/social-growth-engineer\n```\n\nThen ask your questions.\n\n### List Your Skills\n\nIn Claude Code, type `/` to see all available skills.\n\n## Repository Structure\n\n```\nskills/\n├── README.md                       # This file\n├── LICENSE                         # Apache 2.0\n├── CONTRIBUTING.md                 # Contribution guidelines\n├── .gitignore\n└── skills/\n    ├── nano-banana-prompt/         # Nano Banana Pro prompt engineering\n    │   ├── SKILL.md                # Main skill file\n    │   └── references/             # Supporting documentation\n    │       ├── photorealism-portraits.md\n    │       ├── creative-experiments.md\n    │       ├── product-commercial.md\n    │       ├── editing-transformation.md\n    │       └── json-structure-guide.md\n    ├── social-growth-engineer/     # Viral app growth\n    │   ├── SKILL.md                # Main skill file\n    │   └── references/             # Supporting documentation\n    │       ├── complete-playbook.md\n    │       ├── hooks-and-formats.md\n    │       └── case-studies.md\n    ├── postbridge-social-growth/   # Post Bridge organic growth coach\n    │   ├── SKILL.md                # Main skill file\n    │   └── references/             # Supporting documentation\n    │       └── methodology.md\n    ├── growth-hacker/              # Holiday + Ellis + Weinberg synthesis\n    │   ├── SKILL.md                # Main skill file (diagnostic router)\n    │   └── references/             # Frameworks + 19 channel deep-dives\n    │       ├── pmf.md\n    │       ├── aha-moment.md\n    │       ├── growth-equation.md\n    │       ├── activation.md\n    │       ├── retention.md\n    │       ├── virality.md\n    │       ├── bullseye.md\n    │       ├── growth-process.md\n    │       ├── mindset.md\n    │       └── channels/           # 19 channel files + index\n    └── ultimate-sales/             # Rackham + Blount + Keenan + Dixon + Voss + Carnegie synthesis\n        ├── SKILL.md                # Main skill file (stage-aware coach)\n        ├── frameworks/             # Synthesis layer\n        │   ├── diagnose-first.md\n        │   ├── question-arsenal.md\n        │   ├── reframe-and-teach.md\n        │   ├── tactical-empathy.md\n        │   ├── prospecting-playbook.md\n        │   └── influence-principles.md\n        ├── assets/                 # Templates and scripts\n        │   ├── email-templates.md\n        │   ├── call-scripts.md\n        │   └── negotiation-prep.md\n        └── references/             # Full book extracts\n            ├── spin-selling.md\n            ├── fanatical-prospecting.md\n            ├── gap-selling.md\n            ├── challenger-sale.md\n            ├── never-split-the-difference.md\n            └── how-to-win-friends.md\n```\n\n## Skills Roadmap\n\n**Coming Soon**:\n- 📊 **data-analyst**: Advanced data analysis and visualization workflows\n- 🎨 **design-system**: Building and maintaining design systems\n- 🔧 **devops-expert**: Infrastructure, CI/CD, and deployment strategies\n- 📝 **technical-writer**: Creating clear technical documentation\n\nWant to see a specific skill? [Open an issue](https://github.com/giulioco/skills/issues) with your suggestion!\n\n## Contributing\n\nWe welcome contributions! Whether you want to:\n- Add new case studies to existing skills\n- Create entirely new skills\n- Fix errors or improve documentation\n- Share your successful strategies\n\nSee [CONTRIBUTING.md](CONTRIBUTING.md) for guidelines.\n\n## Development\n\n### Testing Skills Locally\n\nClone and test before installation:\n\n```bash\ngit clone https://github.com/giulioco/skills.git\ncd skills\nnpx add-skill .\n```\n\nTest the skill in Claude Code by asking relevant questions.\n\n### Creating New Skills\n\n1. Create a new directory in `skills/`:\n   ```bash\n   mkdir -p skills/my-new-skill\n   ```\n\n2. Create `SKILL.md` with proper frontmatter:\n   ```yaml\n   ---\n   name: my-new-skill\n   description: Clear description of what this skill does\n   ---\n\n   # Skill Content\n\n   Instructions for Claude...\n   ```\n\n3. Test locally with `npx add-skill .`\n\n4. Submit a PR!\n\nSee the [Claude Code Skills Documentation](https://code.claude.com/docs/en/skills.md) for detailed skill authoring guidelines.\n\n## License\n\nThis collection is licensed under the Apache License 2.0. See [LICENSE](LICENSE) for details.\n\nIndividual skills may have additional attributions in their reference materials.\n\n## Acknowledgments\n\n**social-growth-engineer** is built from analyzing the [Social Growth Engineer](https://socialgrowth.engineer) newsletter archive. All case studies and metrics are from real apps and verified sources.\n\n## Support\n\n- **Issues**: [GitHub Issues](https://github.com/giulioco/skills/issues)\n- **Discussions**: [GitHub Discussions](https://github.com/giulioco/skills/discussions)\n- **Documentation**: [Claude Code Skills Docs](https://code.claude.com/docs/en/skills.md)\n\n## Links\n\n- [Claude Code Documentation](https://code.claude.com/)\n- [Anthropic Skills Repository](https://github.com/anthropics/skills)\n- [add-skill Tool](https://add-skill.org/)\n\n---\n\n**Install now**: `npx add-skill giulioco/skills`\n\nBuilt with ❤️ for the Claude Code community\n",
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