Custom Skill Developer Guide¶
The comprehensive guide to building production Agent Skills — Claude Code-first, cross-platform compatible via the agentskills.io open standard.
17 chapters. 82,000+ words. From your first skill to meta-skill routers, quality scoring systems, and multi-skill pipeline orchestration.
Built from the experience of creating 20+ production Agent Skills for business operations.
What You'll Learn¶
| Section | Chapters | What You'll Build |
|---|---|---|
| Foundations | 1-3 | Your first working skill — from zero to production |
| Skill Anatomy | 4-7 | Production-quality skill definitions with quality scoring |
| Advanced Patterns | 8-11 | Meta-skill routers, token-efficient designs, pipelines |
| Specialized Skills | 12-14 | Data transformation, code generation, and analysis skills |
| Deployment | 15-17 | Installation, testing, and distribution to other users |
Who This Is For¶
You already use AI agents and existing skills. Now you want to create your own — whether that's a skill for your specific domain, a meta-skill that routes to multiple sub-skills, or a full pipeline that chains skills together in dependency order.
No traditional programming background required. If you can write markdown and think in systems, you can build skills.
The Cognify Ecosystem¶
This guide is part of a three-layer stack for the Agent Skills ecosystem:
| Layer | Project | Purpose |
|---|---|---|
| Education | Custom Skill Developer | Teaches how to build production skills |
| Tooling | Skill Quality Analyzer | Audits skills against the spec (100-point rubric) |
| Product | Cognify Skills | 19 production business operations skills |
Cross-Platform Compatibility¶
Skills built with this guide work everywhere the agentskills.io standard is supported:
Claude Code | Claude.ai | VS Code | Cursor | OpenAI Codex | Gemini CLI | and 20+ more
Want Custom Skills Built for Your Business?¶
I build production Agent Skills for companies — workflow automation, sales enablement, operations, and domain-specific AI expertise packaged as reusable skills.
Daniel Yarmoluk — GitHub | LinkedIn | daniel.yarmoluk@gmail.com