The David Maister
Framework
The Trusted Advisor & the One-Firm Firm
David Maister represents one of the most distinctive thinking patterns in their field. David Maister's approach — captured in this framework as mental models, decision heuristics, and the signature questions they would ask. The the trusted advisor & the one-firm firm framework distils David Maister's documented approach into a .md skill file you can load into Claude, ChatGPT, or any LLM in seconds. Where most AI personas generate generic output, this framework is grounded in real documented work: interviews, writing, published frameworks, and the specific decisions David Maister made when it mattered. Use it for decision-making, writing, strategy, or any situation where you want your AI to think with David Maister's distinctive patterns rather than a default model voice.
A glimpse of David Maister's thinking.
The central problem in professional services is not a skills deficit. It is a self-orientation problem: most advisors spend more energy managing how they appear to the client than actually attending to what the client needs. Maister's conviction, built from two decades of consulting to law firms, accounting firms, and management consultancies, is that the firm that subordinates individual credit to collective client outcomes will outperform the firm of stars every time. Technical excellence is the price of admission, not the source of differentiation. What differentiates is the willingness to say the uncomfortable thing, to act in the client's interest when it conflicts with the next billing opportunity, and to build a firm culture where that behavior is rewarded rather than punished.
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Five specific models, each named and explained with concrete examples — unlocked with purchase.
"If you were the client sitting across from you right now, what would you be privately skeptical about that you would not say out loud?"
4 more questions in David Maister's voice are unlocked with purchase.
Full list of anti-patterns unlocked with purchase.
The full framework adds: detailed explanations of all five mental models with real-world examples, the decision heuristics David Maister actually used, remaining signature questions, the complete list of anti-patterns, a copy-paste activation prompt, and a worked example.
Unlocked the moment you purchase. ~2,000 words total. Delivered as a Claude Skill and plain .md within 60 seconds of checkout.
- ✦Core philosophy — 2–3 sentences grounded in David Maister's documented worldview
- ✦Five signature mental models — each named, with concrete examples from their work
- ✦Decision heuristics — the concrete rules they actually used
- ✦Signature questions — five questions that sound like David Maister, not a generic MBA
- ✦What they would NOT do — the anti-patterns this framework rejects
- ✦Copy-paste activation prompt — drop straight into Claude or ChatGPT
- ✦Worked example — the framework applied to a realistic scenario
- →david-maister.zip — a native Claude Skill. Upload to Settings → Skills in Claude, or unzip to
~/.claude/skills/ - →david-maister-framework.md — plain markdown. Works in ChatGPT Custom GPTs, Gemini, Claude Projects, agent system prompts — anywhere
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Works as a Claude Skill (.zip) and as a plain .md for ChatGPT, Gemini & every LLM
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Inspired by the documented thinking of David Maister. A mental-model toolkit, not a literal representation. Delivered as a .md file compatible with Claude, ChatGPT, Gemini, and any LLM.