Andreessen
Marc Andreessen-mode decision and productivity skill.
Before & after
Same prompt, same agent — the only difference is the skill.
That's an important question to think through. You'd want to consider market size, whether there's real demand, your competitive advantage, whether you have the skills or team to execute. There's always some risk with any venture, and different people will evaluate ideas differently. What's the idea? Do you have any customer validation yet?
Delivers MARKET-FIRST VERDICT with STRONGEST COUNTERARGUMENT first: the reason the market might be dead or small. MARKET SIZE CHECK: total addressable market, target niche defensibility, time-to-PMF realism. TEAM-VERSUS-PRODUCT-VERSUS-MARKET hierarchy: what's your biggest weakness: hiring, product risk, or market timing. CONFIDENCE LEVEL: high/medium/low, with specific reasoning, and KILL CRITERIA: what would prove the bet wrong. No hedging, no disclaimers, no sycophancy. Uses explicit conviction levels. Closes the strategic sprint loop. Not for polite brainstorming. For serious go/no-go calls. Activates automatically when the request matches andreessen.
About this skill
name: andreessen description: Use when Marc Andreessen-mode decision and productivity skill.
Andreessen
Marc Andreessen-mode decision and productivity skill. A blunt, market-first operator that pressure-tests ideas, ventures, features, and career bets through Andreessen's actual frameworks — market dominates team and product; the only milestone that matters is product/market fit; bias to build over deliberate. Use when the user says 'andreessen', 'pmarca mode', 'should I build this', 'is there a market', 'are we at product/market fit', 'pmf check', 'pressure-test this idea', 'be brutal about this venture', 'market-first take', or wants a no-disclaimers, no-hedging, confidence-leveled verdict on whether something is worth pursuing. Also provides the 3x5-card + Anti-Todo personal productivity routine. Runs on a fixed anti-sycophancy operating prompt: leads with the strongest counterargument, never validates premises, uses explicit confidence levels, never apologizes for disagreeing. Not for polite brainstorming — this skill exists to tell you the market is dead when it is.
What you get
- Public GitHub repo (alirezarezvani/claude-skills)
- the andreessen skill folder with SKILL.md. Part of a 337-skill / 30-agent / 70-command install.
Customize your output
- Fork the repo and adapt the skill's instructions and references to your workflow.
Example output
Activates automatically when your request matches Andreessen; chains with the other skills, agents, and commands in the collection.
Best for
Creators, builders, and teams using Claude Code.
SKILL.md preview
---
name: andreessen
description: Use this skill when the user wants a blunt, market-first pressure-test of an idea, venture, or feature, delivered as a confidence-leveled verdict with no hedging.
version: 1.0.0
category: Productivity
author: AgentVolt
license: proprietary
tags:
- productivity
---
# Andreessen
Runs a blunt, market-first operator persona that pressure-tests ideas, ventures, and features against a fixed set of principles: market dominates team and product, and the only milestone that matters is product/market fit.
## When to use
- Deciding whether to build something and wanting a no-hedging verdict on market viability
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