LeanOS Core

AI operating system for founders. Run startup discovery, structured reasoning, and goal management with Claude Code.

See every prompt. Modify any skill. Know your agent.

Open Source (MIT) | 14 skills | 2 agents

---

What It Does

• Startup discovery: Market sizing, customer segmentation, problem validation, competitive analysis
• Structured reasoning: 6 reasoning modes (causal, abductive, inductive, analogical, dialectical, counterfactual)
• Output shaping: 11 deliverable schemas for structured outputs
• Goal-driven execution: Declare objectives, decompose into actionable plans

---

Quick Start

1. Clone and rename

# Clone LeanOS Core
git clone https://github.com/BellaBe/lean-os.git

# Rename to your project
mv lean-os your-project
cd your-project

2. Start using skills

Skills auto-load based on your task. Try:

• "Size the market for X" → market-sizing
• "Define customer segments" → customer-segmenting
• "Validate this problem" → problem-validating
• "I want to achieve X" → goal-setter
• "Reason through this decision" → thinking-modes

3. Set up goals (optional)

For goal-driven operation:

your-project/
├── strategy/
│   ├── goals/           # Objectives + index.md
│   └── canvas/          # Business context (15 sections)
├── threads/             # Decision threads + index.md
├── artifacts/           # Deliverables + index.md
└── .claude/             # LeanOS skills & agents

---

Core Skills (14)

Foundations (6)

Skill	Purpose
market-sizing	TAM/SAM/SOM calculation, market timing
customer-segmenting	Observable segment definitions, pain scores
problem-validating	Problem severity scoring (F×I×WTP)
competitive-analyzing	Competitor mapping, positioning gaps
value-positioning	UVP statements, moat analysis
solution-designing	MVP feature set, growth architecture

Cognitive (2)

Skill	Purpose
thinking-modes	6 reasoning modes for different problem types
shaping-schemas	11 deliverable schemas for structured outputs

Goals (2)

Skill	Purpose
goal-setter	Transform objectives into structured goals
goal-tracker	Track progress, derive state from execution

System (3)

Skill	Purpose
agent-creating	Create Claude Code subagents
skill-creating	Create Claude Code skills
directory-indexing	Generate index.md files for navigation

Intelligence (1)

Skill	Purpose
behavioral-science	Apply behavioral science to revenue touchpoints

---

Core Agents (2)

Agent	Purpose
foundations-research	Run startup discovery phase (market, segments, problems, competition)
problem-solver	Orchestrate reasoning + output shaping for rigorous deliverables

---

Core vs Pro

	Core (Free)	Pro ($249)
Skills	14	181
Agents	2	44
Foundations	✓	✓
Sales & Marketing	—	✓
Product & Engineering	—	✓
Customer Success	—	✓
RevOps	—	✓

Pro - Full business operations: sales, marketing, product, engineering, customer success, RevOps. One person operates with 5-10x effectiveness.

Get Pro →

---

Reference

Document	Description
Agents & Skills Index	Complete agents and skills reference
What is LeanOS	System overview

---

License

MIT License - see LICENSE