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 'simplify this', 'which is more likely', 'are we overcomplicating this?', 'what's the most likely explanation?', or presents multiple competing hypotheses/designs/diagnoses to rank. Do NOT activate when: only one explanation is on the table (nothing to compare), or when the candidates do not…
Skill Claude CodeCodex
Activate when: user says 'set OKRs', 'write objectives and key results', 'our goals aren't measurable', 'teams are hitting targets but the business isn't moving', 'we need stretch goals', 'align teams around quarterly goals', or mentions Doerr / Measure What Matters. Do NOT activate when: the team is under 10 people…
Skill Claude CodeCodex
Activate when: competitor outmaneuvers you despite worse resources; decisions take longer than the situation allows; team is losing a competition they should win; setting up crisis or incident response; someone says 'Boyd', 'decision cycle', 'get inside their loop', or 'tempo'. Do NOT activate when: situation is…
Skill Claude CodeCodex
Activate when: user says "what could we have done instead," "what's the next-best alternative," "is this worth the cost," "what are we giving up by choosing X," "broken window fallacy," or is allocating scarce resources (money, time, attention, people) across competing options. Do NOT activate when: all alternatives…
Skill Claude CodeCodex
Activate when: user says 'we've hit a growth ceiling,' 'should we acquire or build,' 'we're growing but not sure we can sustain it,' 'what's our M&A strategy,' or a business has achieved initial PMF and is designing its next growth phase. Do NOT activate when: the organic core is not yet at product-market fit; or the…
Skill Claude CodeCodex
Activate when: user says 'we want to go global' or 'expand internationally', founder is choosing between opening a local office vs. going digital-first in a new country, company has home-market traction and is planning its first international move, investor asks whether a portfolio company's overseas revenue is…
Skill Claude CodeCodex
Activate when: user says 'Pareto,' '80/20,' 'vital few,' 'long tail,' 'where is the leverage'; a team is treating many items as equally important; a backlog has no triage; growth efforts are spread thin across too many initiatives. Do NOT activate when: fewer than 6 items total (no distribution to analyze)…
Skill Claude CodeCodex
Activate when: user says 'how will they remember this,' 'experience design,' 'journey design,' 'memorable moment,' 'end-of-experience,' or 'our NPS is lower than expected'; when designing or auditing a multi-stage customer or user journey; when a competitor with similar quality earns higher recommendation rates. Do…
Skill Claude CodeCodex
Activate when: user says "PMF," "product-market fit," "crossing the chasm," "early adopter to mainstream," "whole product," "we're stuck after our beachhead," or "growth stalled after an initial good period"; startup has early traction but can't tell if it's real; team is debating which segment to target next after…
Skill Claude CodeCodex
Activate when: user says 'we're good at X but not growing,' 'we need a moat,' 'we're just a feature not a platform,' 'competition keeps copying us,' 'we want to build something hard to replicate,' or asks how to move from product to platform to ecosystem. Do NOT activate when: the user is still searching for…
Skill Claude CodeCodex
Activate when: user asks 'is this a good industry to enter?', 'why is our margin so low despite solid execution?', 'what are the barriers to entry here?', 'how much power do our suppliers/buyers have?', 'should we invest in this sector?', or requests a structured competitive/industry analysis. Do NOT activate when…
Skill Claude CodeCodex
Activate when: a product is 'a better X' but nobody gets it; 'people don't understand what we do', weak conversion despite a good product, choosing a category/competitive frame; naming what you are. Do NOT activate when: positioning is already clear and validated and the task is execution, not repositioning. More…
Skill Claude CodeCodex
Activate when: user is allocating capital or resources across a portfolio and wants to know where to concentrate; user says 'our average customer / deal / employee performs at X' and is making decisions from that average; user is building a risk model using standard deviation or VaR; user asks why a few customers or…
Skill Claude CodeCodex
Activate when: user says 'let's check what could go wrong before we commit', 'I want to stress-test this plan', 'we're about to launch and I'm worried we're missing something', 'premortem', or is about to make a hard-to-reverse decision with a team that has converged on one plan. Do NOT activate when: the decision is…
Skill Claude CodeCodex
Activate when: user says 'how should we price this', 'we should just charge more', 'our competitors charge X', 'willingness to pay', 'anchor price', 'value-based pricing', 'freemium structure', setting a first price for a new product, considering a price increase and worried about churn, or needing to design…
Skill Claude CodeCodex
Activate when: someone asks why an employee, executive, contractor, board member, or fund manager isn't acting in the org's interest; a compensation or incentive structure is being designed; outsourcing or partnership terms are being negotiated; someone says 'agency cost,' 'moral hazard,' 'skin in the game,' or…
Skill Claude CodeCodex
Activate when: user asks 'why does everyone keep doing X when it's obviously bad for all of us', 'how do we get out of this race to the bottom', 'should we trust them not to defect', 'we'd both be better off cooperating but it never happens', 'is this a prisoner's dilemma / Nash equilibrium / tragedy of the commons /…
Skill Claude CodeCodex
Activate when: user says 'what are the odds,' 'base rate,' 'Bayesian update,' 'calibration,' or 'what's the probability'; user is making a forecast or estimating a conversion/close/hire/outcome probability; someone claims 'I'm 90% sure' without any evidence grounding; a vivid story is being used in place of a prior…
Skill Claude CodeCodex
Activate when: a founder needs to know if the company survives without more funding; 'are we default alive or default dead', deciding to cut burn or raise, bootstrapping to survival; runway math. Do NOT activate when: the company is already comfortably profitable and the question is scaling, not survival. More…
Skill Claude CodeCodex needs its repo
Activate when: a real estate agent wants clients who refer and return; designing the closing/handoff experience, milestone moments in a transaction; 'how do I get more referrals from happy clients'. Do NOT activate when: the transaction is transactional-only with no relationship goal (e.g. one-off REO). More…
Skill Claude CodeCodex needs its repo
Activate when: a listing isn't selling and the agent must decide list price or a price reduction; 'should we drop the price', 'how much and when', days-on-market rising, showings without offers. Do NOT activate when: the property is priced right and getting offers (no decision). More…
Skill Claude CodeCodex needs its repo
Activate when: a real estate agent wants repeat + referral business instead of chasing cold leads; 'where's my next deal coming from', building a sphere-of-influence / past-client nurture, database marketing. Do NOT activate when: the agent has no past clients/contacts yet (start with lead-gen basics first). More…
Skill Claude CodeCodex needs its repo
Activate when: a real estate agent is running a listing/transaction and must not skip disclosure, agency, and fair-housing steps; 'what do I need to disclose', writing an ad, handling an offer, closing coordination. Do NOT activate when: the question is pure market/pricing analysis with no compliance step. More…
Skill Claude CodeCodex
Activate when: someone is being unexpectedly generous before making a request; you're deciding whether to accept a gift, free sample, or unsolicited concession; you're designing a sales or fundraising sequence and want to give first; a negotiation counterpart just retreated from an extreme position and you feel pulled…
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: