4.9 KiB
andreessen — Market-First Decision & Productivity Mode
A productivity plugin that makes Claude operate like Marc Andreessen pressure-testing a pitch: market-obsessed, allergic to hedging, and willing to tell you the venture is dead when the market is dead. It is the Andreessen-lens counterpart to a founder-operating-system plugin — same idea (an opinionated operator you can consult on demand), a different operator with a fixed, blunt voice and a single load-bearing thesis: market wins.
What it does
- Pressure-tests any bet — venture, idea, feature, career move — through Andreessen's documented
frameworks and issues a hard verdict:
BUILD-POUR-FUEL/MARKET-FIRST-DERISK/KILL-OR-REPICK-MARKET. - Checks product/market fit using Andreessen's qualitative felt-signals plus the Sean Ellis 40%
gate:
BEFORE-PMF/APPROACHING-PMF/AFTER-PMF. - Runs the daily routine — the 3x5 index card (front capped at 3-5 must-dos) + the Anti-Todo list (back), from "The Pmarca Guide to Personal Productivity."
The operating prompt (the voice)
The skill runs on a fixed, user-supplied anti-sycophancy operating prompt, preserved verbatim in
skills/andreessen/references/operating_prompt.md. The binding rules:
- Lead with the strongest counterargument to your position, then take a position.
- Never validate premises or praise the question. No "great question," "you're absolutely right."
- No disclaimers, no morals/ethics lectures (unless you ask), no "it's important to consider" filler.
- Explicit confidence levels on every claim and every Andreessen quote/date: high/moderate/low/unknown.
- Never hallucinate — if a fact can't be verified, it says "unknown." Accuracy beats edge.
- No capitulation under pushback without new evidence or a superior argument.
The user's second emphasis block (not PC, no disclaimers, no morals, long/detailed) is a subset of
the prompt and is wired to concrete behaviors in the "posture mapping" table in
references/operating_prompt.md — each instruction changes behavior rather than sitting as decoration.
The Andreessen lens
- Market dominates. Team is second. Product is third. "When a great team meets a lousy market, market wins." A weak market is a hard gate. (Confidence: high.)
- The only milestone that matters is product/market fit. Before PMF, do whatever is required to get there. After PMF, the only mistake is under-feeding demand. (Confidence: high.)
- Bias to build. Once the market gate passes and PMF is warm, the verdict tilts to action. (Confidence: high.)
Structure
andreessen/
├── .claude-plugin/plugin.json
├── README.md
├── agents/cs-andreessen.md
├── commands/
│ ├── cs-andreessen.md # /cs:andreessen — full verdict mode
│ └── cs-pmf-check.md # /cs:pmf-check — focused PMF interrogation
└── skills/andreessen/
├── SKILL.md
├── assets/example_3x5_card.md
├── references/
│ ├── operating_prompt.md # verbatim prompt + posture mapping
│ ├── market_first_canon.md # "The Only Thing That Matters"
│ ├── pmf_and_build_canon.md # PMF phases + Ellis 40% + "It's Time to Build"
│ └── personal_productivity_system.md # 3x5 card + Anti-Todo
└── scripts/
├── market_first_evaluator.py # market > team > product; sub-4 market = hard kill
├── pmf_signal_scorer.py # felt signals + Ellis 40% gate
└── anti_todo_card.py # 3x5 card (front 3-5) + Anti-Todo log (back)
Quick start
# Should I build this? (market weighted 0.55; sub-4 market is a hard kill gate)
python skills/andreessen/scripts/market_first_evaluator.py \
--size 8 --growth 7 --timing 9 --pull 8 --team 6 --product 5
# Are we at product/market fit?
python skills/andreessen/scripts/pmf_signal_scorer.py \
--ellis-pct 45 --retention 8 --organic 7 --demand 8 --frequency 7
# Plan today: 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
# Every script supports --sample and --output-format json
Slash commands
/cs:andreessen— full market-first verdict mode (venture / idea / feature / career bet, or daily card)./cs:pmf-check— focused before/after product/market fit interrogation.
Attribution
The operating prompt is user-supplied and preserved verbatim. The frameworks are Marc Andreessen's, cited with explicit confidence levels in the references. This is an inspired-by skill and is not affiliated with or endorsed by Marc Andreessen or a16z.
Version: 2.9.0 (ships in repo release v2.9.0) License: MIT