claude-skills/docs/commands/cs-andreessen.md

title	description
/cs-andreessen — Slash Command for AI Coding Agents	/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

:material-console: Slash Command :material-github: Source

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

# 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
• Skill: andreessen
• Companion command: /cs:pmf-check
• Siblings: /cs:reflect, /cs:capture (productivity)

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Version: 1.0.0