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 'I'm stuck and don't know why', 'I keep making the same mistake', 'my analysis feels right but I'm not sure', 'am I solving the right problem', 'I should understand this but I don't', or asks about calibration / thinking about thinking. Do NOT activate when: user is doing routine…
Skill Claude CodeCodex
Activate when: a decision is framed as 'X or not-X' but is really a spectrum; someone says 'we have to choose between A and B' and both seem to have problems; a debate is stuck in ideological purity and 'compromise' is being dismissed as weakness; someone says 'Zhongyong,' 'doctrine of the mean,' 'third way,' or 'the…
Skill Claude CodeCodex
Activate when: a founder wants to appeal to everyone; 'our market is huge / everyone is a customer', picking a beachhead, a creator/SMB choosing a niche; 'who exactly is this for?'. Do NOT activate when: the business genuinely requires mass-market scale from day one and a niche is proven irrelevant. More…
Skill Claude CodeCodex
Activate when: user asks 'is this a bubble?', 'what's the tail risk here?', 'this time is different', 'leverage has been stable for years', 'the fundamentals support these prices', someone wants to diagnose credit cycle fragility, analyze debt structure risk, or assess whether a calm financial period is hiding…
Skill Claude CodeCodex
Activate when: user says 'we have a better product but we're losing,' 'they're growing despite less funding,' 'our moat isn't protecting us,' 'the market shifted under us,' 'we just need to hire harder,' or is diagnosing why strong incumbents lose to weaker newcomers, evaluating a market entry, or asking whether a…
Skill Claude CodeCodex
Activate when: user says 'monopoly vs competition,' 'competition is for losers,' 'zero to one,' 'do we have a moat,' 'is this market too crowded,' 'how do we escape competition,' or 'start small and monopolize'; a startup or product is entering a category with many similar players and the user is deciding whether/how…
Skill Claude CodeCodex needs its repo
Activate when: designing/reviewing loan-originator compensation; considering a marketing services agreement (MSA), lead-buy, or referral arrangement; 'can we pay for these referrals?', 'can comp vary by loan?'. Do NOT activate when: unrelated ops incentives with no mortgage-referral nexus. More…
Skill Claude CodeCodex needs its repo
Activate when: a file is submitted or in underwriting; rate lock is ticking; 'what could kill this loan before closing?'; thin-file or borderline borrower. Do NOT activate when: clear-to-close with no open conditions. More: deciqai.com/s/mortgage-loan-fallout-premortem.
Skill Claude CodeCodex needs its repo
Activate when: matching a borrower to Conventional/FHA/VA/USDA/Jumbo/Non-QM; deciding fixed vs ARM; 'which program fits this borrower?'; borderline DTI/LTV/credit. Do NOT activate when: borrower is pre-committed to one specific product with no alternative. More: deciqai.com/s/mortgage-loan-program-matching.
Skill Claude CodeCodex needs its repo
Activate when: a borrower anchors on a headline/teaser rate they saw; presenting rate+points+APR trade-offs; competitor 'lowball' quote; 'why is your rate higher than the ad?'. Do NOT activate when: simply disclosing final locked terms. More: deciqai.com/s/mortgage-rate-negotiation-anchoring.
Skill Claude CodeCodex needs its repo
Activate when: an application hits the 6-item threshold (LE clock starts); approaching closing (CD clock); any change-of-circumstance / re-disclosure; 'did we send the LE in time?', 'does this trigger a new 3-day wait?'. Do NOT activate when: pre-application shopping with no six items collected. More…
Skill Claude CodeCodex
Activate when: user says 'the market is telling us X', 'valuation has dropped/risen so we should act', 'everyone is selling/buying so I should too', or is making an investment/fundraising decision based on a quoted price under emotional pressure. Do NOT activate when: the market quote genuinely reflects new economic…
Skill Claude CodeCodex
Activate when: someone says 'MVP', 'minimum viable product', 'smoke test', 'concierge MVP', or 'Wizard of Oz'; a team is scoping a build and hasn't named the assumption they're testing; engineers are about to build for months on an unvalidated idea; someone asks 'what's the smallest thing we can ship?'. Do NOT…
Skill Claude CodeCodex
Activate when: user is reading a business case study or founder biography and drawing lessons; a post-mortem produced a neat single root cause; someone says 'the story is too clean' or 'that explanation is too convenient'; a pundit explains a market or political event confidently after it happened; user is building a…
Skill Claude CodeCodex
Activate when: user says 'this is taking too long', 'everyone else is doing X', 'should we take the easier path', 'is this worth it', 'we need to build a moat', 'choosing which capability to invest in long-term', or 'should we persist or pivot on this hard path'. Do NOT activate when: the path is only hard but not…
Skill Claude CodeCodex
Activate when: user asks 'what will they do if we do X', 'how will competitors react to our pricing', 'how do I design this auction or mechanism', 'we keep ending up in a bad outcome even though everyone prefers better', or is analyzing a strategic situation with multiple rational counterparties (pricing, negotiation…
Skill Claude CodeCodex
Activate when: user says 'we have network effects,' 'winner-take-most,' 'two-sided platform,' 'Metcalfe's law,' 'marketplace liquidity,' or 'the more users the better'; user is building a marketplace, social product, communication tool, or platform and needs to model when the dynamic activates; user is evaluating…
Skill Claude CodeCodex
Activate when: 'we keep trying to change this and it reverts,' 'people know what to do but don't do it,' 'the training didn't stick,' someone hits a knowing-doing gap repeatedly, or a culture change effort has failed more than once. Do NOT activate when: first attempt at change (try L2–3 first); person is in acute…
Skill Claude CodeCodex
Activate when: user says 'how do I level up my thinking', 'why do I keep copying others', 'I don't know what I don't know', 'how do I develop independent judgment', or their reasoning shows systematic deference to authority, inability to form original views, or frustration at being stuck at the same thinking level for…
Skill Claude CodeCodex
Activate when: user says 'everyone agrees on this,' 'the obvious move is X,' 'why go against the grain?'; user is entering a crowded market where the right strategy feels obvious; user has an early signal conflicting with the mainstream narrative; user is making a high-stakes allocation where popular choice and…
Skill Claude CodeCodex
Activate when: someone says 'this is win-lose,' 'we can't both win,' 'what's in it for them to cooperate,' 'is there a deal here,' or 'how do we get past this standoff'; a negotiation or conflict feels deadlocked; you're designing a platform, contract, or institution that needs to align competing parties. Do NOT…
Skill Claude CodeCodex
Activate when: teams are fighting over which metric to optimize; someone says 'north star metric,' 'NSM,' 'OMTM,' or 'one metric that matters'; a dashboard has 30+ metrics with no clear priority; a leading indicator is needed that predicts revenue before it moves; or someone asks 'what should we optimize?' Do NOT…
Skill Claude CodeCodex
Activate when: user says 'nudge,' 'default,' 'opt-in vs opt-out,' 'choice architecture,' or 'why do people know they should but don't?'; user has a behavior gap between intent and action; user is designing product onboarding, policy enrollment, or public health interventions and wants to change behavior without…
Skill Claude CodeCodex
Activate when: deals stall on 'too expensive', 'not now', 'need to think about it', 'send me info'; a founder gets flustered by pushback; improving close rate. Do NOT activate when: the prospect is genuinely unqualified (then disqualify, don't 'handle'). More: deciqai.com/s/objection-handling.
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: