Claude Cowork Skills - Cheat Sheet (2026)
2-page PDF: Claude Cowork Skills file structure, SKILL.md frontmatter, trigger formula, 5 advanced patterns, troubleshooting. Print-ready for builders.
Guides are for learning, cheatsheets are for building. This is the reference you pin next to your editor so you stop context-switching between Claude’s docs and your actual work.
Built from months of daily Claude Cowork usage, testing skill builds across document creation, workflow automation, and MCP coordination. The cheatsheet condenses what took 12+ published guides, community experiments, and a 14K-subscriber audience’s feedback to refine. Every pattern, every troubleshooting fix, every naming rule comes from real builds that broke first and worked second.
What This Is
A 2-page A4 PDF covering the complete Claude Cowork Skills system: file structure, SKILL.md frontmatter syntax, the description formula that controls triggering, five advanced patterns, troubleshooting, and a starter template. Print it, pin it, build with it.
What’s Inside
SKILL.md file structure and naming rules: The exact folder layout, case rules, and reserved-name restrictions. No more upload failures from a misnamed folder.
Frontmatter syntax with the description field formula: [What it does] + [When to use it] + [Specific trigger phrases]. This formula controls whether your skill triggers or sits dormant.
Progressive disclosure model: The 3-level loading system (frontmatter → body → references/) that keeps context windows clean. Know what to put where and why.
Three build methods compared: Conversational build (15-30 min), skill-creator skill, and packaging from an existing conversation. Pros and limits of each.
Five advanced skill patterns: Sequential workflow orchestration, multi-MCP coordination, iterative refinement, context-aware tool selection, and domain-specific intelligence. With implementation guidance for each.
Skills vs. other memory layers: A composability table mapping Skills, Prompts, Projects, Subagents, and MCP by what they solve, their lifespan, and trigger mechanism. The key insight: facts live in Projects, methods live in Skills.
Troubleshooting table and starter template: Six common problems with fixes, plus a complete SKILL.md skeleton ready to copy-paste into your next build.
What You’ll Walk Away With
After downloading this cheatsheet, you’ll have a printable 2-page reference covering every decision point in the Skills system: what to name your folder, what to put in your frontmatter, how to write a description that triggers correctly, how to test and debug, and five advanced patterns for when you’re ready to build something serious.
No more doc-hopping. One reference. Two pages.
Who This Is For
This is for you if:
You’ve built or started building Claude Skills and want a quick-reference instead of re-reading the full guide
You use Claude Cowork daily and want the SKILL.md syntax, naming rules, and description formula within arm’s reach
You’re evaluating whether to invest time building Skills and want to see the full system in two pages before committing
You manage a team using Claude and want a shared reference everyone can follow