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Andreessen Mode — Market-First Decision & Productivity

A blunt Marc Andreessen persona that pressure-tests ideas and ventures market-first and ends with a BUILD / DERISK / KILL verdict plus confidence level.

UtilitiesIntermediate★ 24,151⑂ 3,405AI score 9/10Last updated: Aug 9, 2026

What it does

  • Evaluates ideas, features, ventures and career bets through Andreessen's documented frameworks: market > team > product, product/market fit as the only milestone, and a bias to build.
  • Runs a 6-question forcing interrogation one question at a time (what is the market, why now, PMF signal, what you'd change, software leverage, cheapest 100x experiment) and closes with BUILD-POUR-FUEL, MARKET-FIRST-DERISK or KILL-OR-REPICK-MARKET.
  • Ships three stdlib-only Python tools: a weighted market evaluator (market weight 0.55 with a hard sub-4 kill gate), a PMF signal scorer with the Sean Ellis 40% gate, and a 3x5 card + Anti-Todo daily routine.
  • Enforces a fixed anti-sycophancy voice: strongest counterargument first, no premise validation, no disclaimers, explicit confidence levels, no capitulating under pushback without new evidence.

Who it's for

  • Founders, PMs and new-business owners who need a cold read on the market rather than encouragement.
  • Anyone who wants a decision, not a list of "things to consider".
  • People who want a hard 3–5 item daily discipline plus an accomplishment log.

Example uses

  1. "pmarca mode — pressure-test this B2B analytics idea" → question-by-question interrogation, then a scored verdict with confidence.
  2. "pmf check: Ellis 45%, retention 8, organic 7, demand 8" → runs pmf_signal_scorer.py for BEFORE / APPROACHING / AFTER-PMF.
  3. "Plan my day" → builds a 3x5 card capped at five must-dos and logs completed work on the Anti-Todo side.

· · · Install guide · · ·

Try it now, no install

Paste this into Claude to use the skill without installing anything.

Read the instructions in this file and follow them to help me:
https://raw.githubusercontent.com/alirezarezvani/claude-skills/HEAD/.gemini/skills/andreessen/SKILL.md

What I want: (describe your task here)

If Claude can't open the link, open it yourself and paste the contents instead.

↓ If it works for you, download the ZIP below and install it. Then it runs on its own — no pasting each time.

Install in the Claude app (no terminal)
  1. Download the ZIP with the button below.
  2. In Claude, open Settings → Capabilities and turn on 'Code execution and file creation'. (one time)
  3. Go to Customize → Skills → + → 'Upload a skill' and upload the ZIP.
↓ Download ZIP
Install in Claude Code

Let Claude do it — paste this into Claude Code

Install the skill I found on AI Skill Mart.
Copy the .gemini/skills/andreessen folder from the GitHub repo alirezarezvani/claude-skills into my ~/.claude/skills/andreessen/.
When it's done, tell me in one line what this skill can do.

Install with a command instead

git clone https://github.com/alirezarezvani/claude-skills.git /tmp/claude-skills && mkdir -p ~/.claude/skills && cp -r /tmp/claude-skills/.gemini/skills/andreessen ~/.claude/skills/

⚠ This is a third-party skill. Check the source repository before installing.

  1. Open your terminal.
  2. Clone the repo into a temp folder: git clone https://github.com/alirezarezvani/claude-skills.git /tmp/claude-skills
  3. Create the skills directory: mkdir -p ~/.claude/skills
  4. Copy the skill over: cp -r /tmp/claude-skills/.gemini/skills/andreessen ~/.claude/skills/
  5. Verify with ls ~/.claude/skills/andreessen — you should see SKILL.md, scripts/, references/, assets/.
  6. Confirm Python 3 is available: python3 --version (no external packages needed).
  7. Restart Claude Code and trigger it with something like "andreessen mode: pressure-test this venture".
View source on GitHub ↗License: MIT