Your CLAUDE.md file is probably growing every week. Pawel Huryn's has six items and hasn't changed in months.
His file contains a 2-3 sentence project description, a file structure map so the agent never scans blindly, identity context (role, audience, goals), knowledge routing that tells the agent where domain-specific files live, workflow pointers, and a three-line self-improving prompt. That's the entire file. Six items. A routing table.
Writing style rules live in a voice file. Good and bad examples live in a patterns file. Platform instructions live in platform-specific folders (x/, linkedin/). Historical metrics live in a metrics file. Hypotheses and confirmed rules live in domain-specific knowledge files. Detailed procedures live in skills folders. The agent reads the routing table, identifies the domain, and loads only what it needs.
The three-line self-improving prompt is the part you can paste into your own CLAUDE.md today:
1. Before starting any task, review existing rules and hypotheses for this domain
2. Apply confirmed rules by default to your work
3. After completing work and receiving feedback, update rules and hypotheses based on what you learned
Three sentences. Works for any domain: marketing, testing, strategy, hiring, content. The agent reviews what it knows, applies what's confirmed, and updates its knowledge after every session without you rewriting instructions.
Over time, the system auto-discovers hook patterns that correlate with engagement, voice archetypes per platform, sentence structures that get quoted and shared, and which format/length/topic combinations drive reactions. All organized by domain, all ranked by evidence.
The compound gap between someone running this and someone prompting from scratch doubles every month.
This guy literally broke down everything you need to master Claude:
6:07 - Why to Stop Using Chat
9:56 - Cowork vs Code vs Dispatch
18:44 - Skills and MCP Connectors
25:03 - The Skills Marketplace
29:06 - Strategy Canvas Demo
35:14 - Skill Iteration Cycle
40:46 - Why You Need Code
44:43 - Building a Second Brain
56:00 - Self-Improving Knowledge
1:10:00 - Dispatch and Remote Work
1:21:07 - Top Mistakes and Future