Open-source thinking-framework skills that make rigorous reasoning executable for AI agents — first-principles, inversion, second-order thinking, Occam's razor, Bayesian reasoning. Built by deciqAI.
Skill Claude CodeCodex
Activate when: user says 'explain this simply', 'teach me like I'm five', 'do I really understand this', 'what's the simplest way to think about X', 'what's missing in my model', wants to test genuine vs. surface understanding of a concept, or is preparing to teach/present and needs to verify their mental model. Do…
Skill Claude CodeCodex
Activate when: user asks 'should we move first or wait?', 'is it too late to enter this market?', 'how long can they hold their lead?', 'what makes the first mover hard to beat here?', or needs to assess how durable a market leader's position is or map where a pioneer's advantages are weakest. Do NOT activate when: no…
Skill Claude CodeCodex
Activate when: user says 'from first principles,' 'from scratch,' 'why do we even believe this,' 'tear this apart,' or 'the conventional answer seems wrong'; a decision is justified mainly by 'that's how it's done' or 'best practice says'; the conventional answer is expensive or hard to reverse and the user wants to…
Skill Claude CodeCodex
Activate when: a founder is running on empty, working unsustainable hours, or output/judgment is degrading; 'I'm burning out', 'I can't keep this pace', protecting the founder as the company's key asset. Do NOT activate when: it's a short, bounded sprint by choice with recovery planned. More…
Skill Claude CodeCodex
Activate when: an early founder needs revenue but wants to hire a salesperson or 'automate' sales too soon; 'I hate selling', 'when should I hire sales?', first customers, pre-PMF go-to-market. Do NOT activate when: the company already has repeatable, documented sales and is scaling a proven motion (then it's about…
Skill Claude CodeCodex
Activate when: user says 'founder mindset' or 'founder mode'; asks 'default alive or default dead'; says 'do things that don't scale'; says 'am I avoiding the hard thing'; is deciding whether to hire/fire/pivot/raise/cut burn at an early-stage company; feels comfort-seeking creeping in; cannot tell if they are on the…
Skill Claude CodeCodex
Activate when: a founder says they're hitting a ceiling despite working harder; a founding team keeps fighting about who makes decisions; someone asks 'why do some founders progress faster than me?' or 'do I need a co-founder?'; a founder is moving from early stage to scaling and things that worked before are now…
Skill Claude CodeCodex
Activate when: user says 'how you say it matters', 'they're spinning the numbers', 'same data but sounds different', 'is this just framing?', wants to write a persuasive message, suspects a statistic is one-sided, or is evaluating options where the language feels loaded. Do NOT activate when: the different…
Skill Claude CodeCodex needs its repo
Activate when: a freight broker is booking a carrier and must vet authority/insurance/safety before tendering a load; 'is this carrier legit', onboarding a new carrier, preventing fraud/double-brokering. Do NOT activate when: the carrier is an established, already-vetted partner with current records on file. More…
Skill Claude CodeCodex needs its repo
Activate when: a freight broker faces fraud/double-brokering or non-payment risk; 'the carrier that hauled isn't the one I booked', chargebacks, unpaid carriers coming after the shipper; tracing downstream liability. Do NOT activate when: a fully vetted, tracked, single-carrier move with no anomalies. More…
Skill Claude CodeCodex needs its repo
Activate when: a freight broker must quote a lane and decide accept/counter/pass on a load or carrier rate; 'what should I quote', 'is this rate any good', margin vs win-probability on a lane. Do NOT activate when: a contracted rate already governs the lane (no decision). More…
Skill Claude CodeCodex needs its repo
Activate when: a freight broker must balance shipper and carrier interests and disclose their intermediary role; 'whose side am I on', margin transparency, conflicts between best rate for shipper vs relationship with carrier. Do NOT activate when: acting as an asset carrier (not a broker) with no intermediary…
Skill Claude CodeCodex
Activate when: someone says 'they're just like that,' an employee is being blamed for underperformance without examining their situation, a post-mortem is focusing on who screwed up, customer churn is being written off as 'not the right fit,' or someone asks 'why did they do that?' with a character-based answer. Do…
Skill Claude CodeCodex
Activate when: our KPI is going up but the real outcome isn't improving; people seem to be gaming the metric; we're about to tie bonuses or promotions to a number; an algorithm is producing results nobody intended; a test or audit system is being designed. Do NOT activate when: the metric IS the goal with no proxy…
Skill Claude CodeCodex
Activate when: user asks 'did this transformation actually work', 'how do I measure whether coaching/strategy/capital changed the business', 'why does our improvement not stick', 'how do I choose between competing empowerment options', or evaluates a business program by its immediate effect rather than long-term…
Skill Claude CodeCodex
Activate when: user is conducting a performance review or hiring interview; someone says 'she's great across the board' or 'everything they do is excellent'; user is evaluating a vendor, CEO, or investment and all attributes look uniformly positive or negative; user is reading business books or analyst reports and…
Skill Claude CodeCodex
Activate when: someone feels a colleague/partner/company did something on purpose to hurt them; a team believes another side is acting in bad faith; someone is about to escalate based on assumed malicious intent; a pattern of bad outcomes is being labeled a coordinated attack. Do NOT activate when: concrete documented…
Skill Claude CodeCodex
Activate when: someone says 'why isn't the team motivated,' 'we raised salaries but morale didn't improve,' 'people keep leaving for better opportunities,' 'employee engagement is low,' 'how do I retain engineers,' or when designing compensation, job roles, or performance systems. Do NOT activate when: the problem is…
Skill Claude CodeCodex
Activate when: 'what makes top investors/founders truly different', 'how do I close the gap with elite performers', 'what am I missing that successful people have', 'I want to learn from [elite person]', designing a personal development plan that needs to separate learnable from non-learnable advantages. Do NOT…
Skill Claude CodeCodex
Activate when: someone says 'I knew it all along' or 'we should have seen it coming'; a post-mortem is blaming someone for not predicting an outcome; a team is reviewing a past decision and the outcome is coloring the judgment; a decision-maker is being evaluated on what happened rather than what was knowable at the…
Skill Claude CodeCodex
Activate when: user says 'I'll start tomorrow / next week / next month' repeatedly; someone intends to save / exercise / quit but never follows through; a product's free trial or subscription is creating unexpected lock-in; someone wants to design a commitment device or pre-commitment contract; a team keeps deferring…
Skill Claude CodeCodex
Activate when: user asks why a team keeps doing the wrong thing despite training; user is designing compensation, bonuses, or commissions; user says 'people are gaming the metric' or 'our OKRs aren't working'; user wants to fix a performance management system; user asks what incentives are driving a behavior; user is…
Skill Claude CodeCodex
Activate when: growth has stalled despite good execution; a team disagrees whether a goal is 'realistic'; someone says their initiative is transformative but measures it with quarterly targets; you're designing a new market entry or capability platform. Do NOT activate when: organization is in survival mode (cash…
Skill Claude CodeCodex
Activate when: user is entering an unfamiliar industry and needs a working mental model fast; user says 'I need to understand this sector before a meeting next week'; user is evaluating an acquisition or investment in a domain they don't know; user is preparing for a high-stakes expert conversation with limited time…
At most 3 mods per repository are shown here, and a mod shipped inside a plugin is left to that plugin's page — the rest are on their repository pages: