Structured Skill Standard
Every skill follows a 13-component SDS. Skill missing any component fails validation and is not published.
The ProblemAI is powerful in isolation.
AI is powerful in isolation.
Unreliable at scale.
Everyone writes AI prompts differently. Outputs vary wildly. Skills cannot collaborate. There is no shared quality standard. No open registry. Nobody has open-sourced the standard.
Five-Tier Hierarchy
Tier 0 foundation → Tier 4 orchestration. Skills inherit context and pass typed contracts between each other.
Built-in Governance
Ethics, safety, hallucination guard, and regulatory compliance are encoded into every skill — not bolted on.
MCP-Native Runtime
The SkillOS MCP server exposes every skill as an activatable tool. One config line in Claude Desktop or Cursor.
Model-Agnostic
No vendor is privileged. Run with Claude, GPT, Gemini, Mistral, Grok, or any capable model. Skills outlive models.
Skill Studio
Record an expert session, extract the 13 SDS components with AI, review and edit, then submit to the registry.
Tier Architecture
Skills collaborate
4
Tier 0
Foundation
13
Tier 1
Domain
6
Tier 2
Technology
4
Tier 3
Pattern
2
Tier 4
Orchestration
Featured Skills
Browse MarketplaceReady to activate
Tier 0stable
FreeHallucination Guard
AI Safety
Tier 0stable
FreeSecurity Principles
Security & Compliance
Tier 0stable
FreeSoftware Architect
Systems & Architecture
Tier 0stable
FreeSystems Thinking
Engineering Leadership & Architecture
Tier 1stable
FreeAgentic Workflow Specialist
AI Engineering
Tier 1stable
FreeBackend Specialist
Backend Engineering
Industry Coverage
Every industry. Every domain.
3-step setup
Connect in minutes
claude_desktop_config.json
{
"mcpServers": {
"skillos": {
"command": "node",
"args": ["path/to/SkillOS/runtime/dist/index.js"]
}
}
}01
Install runtime
Clone the repo and run npm install in /runtime.
02
Configure MCP
Add the server config to Claude Desktop or any MCP host.
03
Activate skills
Say "activate the Backend Specialist" and start working.