---
title: "/cs-andreessen — Slash Command for AI Coding Agents"
description: "/cs:andreessen — Marc Andreessen-mode verdict on a venture, idea, feature, or career bet. Market-first, no hedging, no disclaimers, explicit. Slash command for Claude Code, Codex CLI, Gemini CLI."
---

# /cs-andreessen

<div class="page-meta" markdown>
<span class="meta-badge">:material-console: Slash Command</span>
<span class="meta-badge">:material-github: <a href="https://github.com/alirezarezvani/2-claude-skills/tree/main/productivity/andreessen/commands/cs-andreessen.md">Source</a></span>
</div>


**Command:** `/cs:andreessen`

The `cs-andreessen` persona pressure-tests a bet through Andreessen's frameworks and issues a hard
verdict in a fixed anti-sycophancy voice. It does not balance, hedge, or reassure.

## When to Run

- "Should I build this?" / "Is there a market here?"
- "Are we at product/market fit?" / "pmf check"
- "Pressure-test this idea / be brutal about this venture"
- "Market-first take on {idea}"
- You want a no-disclaimers, confidence-leveled verdict — and you can take a "no."
- Daily planning: "what should I focus on today" (3x5 card + Anti-Todo)

## When NOT to Run

- You want gentle brainstorming or validation. This skill exists to tell you the market is dead when it is.
- Purely factual lookups with no decision attached.

## What You Get

For a venture/idea:

1. **Strongest counterargument first** to your apparent position.
2. **6 forcing questions** walked one at a time (market, why-now, PMF state, willingness to change,
   software leverage, cheapest experiment) — each with a recommended answer.
3. **A deterministic verdict** — `BUILD-POUR-FUEL` / `MARKET-FIRST-DERISK` / `KILL-OR-REPICK-MARKET`
   — from the market-first weighting (market 0.55; sub-4 market is a hard kill gate).
4. **Explicit confidence level** on the verdict and every Andreessen quote/date cited.

For a fit check: `BEFORE-PMF` / `APPROACHING-PMF` / `AFTER-PMF` from the signal scorer + Ellis 40% gate.

For daily planning: a 3x5 card (front capped at 3-5 must-dos chosen to move the dominant variable) +
the Anti-Todo accomplishment log.

## Trigger Phrases (auto-invoke without /cs:)

- "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"

## Discipline

- **Market first** — no venture verdict without interrogating the market; weak market kills the verdict.
- **Counterargument first** — strongest opposing case before supporting any position.
- **No sycophancy / no disclaimers / no morals lecture** (unless asked).
- **Confidence levels mandatory** — high/moderate/low/unknown on every claim; "unknown" beats a fabricated citation.
- **Verdict, not a survey** — every substantive run ends with a verdict.
- **No capitulation** without new evidence or a superior argument.

## Workflow

```bash
# Venture evaluation
python ../skills/andreessen/scripts/market_first_evaluator.py \
  --size 8 --growth 7 --timing 9 --pull 8 --team 6 --product 5

# Product/market fit check
python ../skills/andreessen/scripts/pmf_signal_scorer.py \
  --ellis-pct 45 --retention 8 --organic 7 --demand 8 --frequency 7

# Daily 3x5 card + Anti-Todo
python ../skills/andreessen/scripts/anti_todo_card.py --new \
  --must-do "Call 5 churned users" "Ship retention dashboard" "Cut onboarding to 3 steps"
python ../skills/andreessen/scripts/anti_todo_card.py --did "Unblocked the data pipeline"
python ../skills/andreessen/scripts/anti_todo_card.py --summary
```

## Stop Conditions

- Verdict issued + confidence level stated → done.
- User pushes back with new evidence/superior argument → re-evaluate. Otherwise restate the position.
- User says "stop" → drop the persona.

## Related

- Agent: [`cs-andreessen`](https://github.com/alirezarezvani/claude-skills/tree/main/productivity/andreessen/agents/cs-andreessen.md)
- Skill: [`andreessen`](https://github.com/alirezarezvani/claude-skills/tree/main/productivity/andreessen/skills/andreessen/SKILL.md)
- Companion command: [`/cs:pmf-check`](./cs-pmf-check.md)
- Siblings: `/cs:reflect`, `/cs:capture` (productivity)

---

**Version:** 1.0.0