Skill directory
Agent skills
Focused instruction packs that teach a coding agent one job well. Browse the catalog and use any of them inside a RiverX project.
18,175Skills
1,902Publishers
249Official
AI Evalsrefoundai/lenny-skillsHelp users build robust infrastructure for measuring, monitoring, and iterating on AI product performance using human, code-based, and LLM-as-a-judge methodologies.03AI Product Strategyrefoundai/lenny-skillsHelp users decide where to apply AI effectively, manage the transition from deterministic to probabilistic software, and build long-term defensibility through verticalization and proprietary data.03Analyzing User Feedbackrefoundai/lenny-skillsHelp users convert massive volumes of qualitative and quantitative feedback into high-confidence product decisions through rigorous synthesis and internal immersion.03Building A Promotion Caserefoundai/lenny-skillsHelp users systematically document their impact, identify skill gaps, and collaborate with their managers to secure a promotion by proving they are already operating at the next level.03Career Transitionsrefoundai/lenny-skillsHelp users evaluate new opportunities, manage professional identity shifts, and transition into roles that maximize both impact and personal fulfillment.03Evaluating Startup Ideasrefoundai/lenny-skillsHelp users distinguish between deceptive tarpit ideas and high-potential opportunities by applying rigorous frameworks for market timing, business math, and user demand.03Evaluating Trade Offsrefoundai/lenny-skillsHelp users navigate complex product decisions by weighing competing priorities and calculating long-term value. This skill covers build-vs-buy logic, technical debt evaluation, and communicating tradeoffs to senior leadership.03Founder Salesrefoundai/lenny-skillsHelp users master the transition from product development to active selling by leveraging their unique status as founders to bridge the trust gap and define a scalable sales motion.03Fundraisingrefoundai/lenny-skillsHelp users navigate the end-to-end lifecycle of funding a startup, from choosing between bootstrapping and VC to closing a Series A or managing a strategic exit.03Idea Validationrefoundai/lenny-skillsHelp users de-risk new product bets by testing core assumptions, building low-fidelity prototypes, and gathering high-signal evidence before investing heavy engineering resources.03Managing Uprefoundai/lenny-skillsHelp users master the art of proactive communication and alignment with their managers and founders to unlock autonomy, secure resources, and drive business impact.03Positioningrefoundai/lenny-skillsHelp users define the strategic context for their product by identifying the right competitive alternatives, unique value drivers, and target segments to win a market category.03Pricing Strategyrefoundai/lenny-skillsHelp users validate willingness-to-pay, select the right value metrics, and continuously optimize pricing and packaging to drive growth.03Retention Engagementrefoundai/lenny-skillsHelp users identify the drivers of long-term retention and implement behavioral mechanics that keep customers coming back. This guide focuses on measuring the survival curve of users and optimizing the product environment for high frequency usage.03Stakeholder Alignmentrefoundai/lenny-skillsHelp users master the art of leading without formal authority by identifying stakeholder incentives, neutralizing conflict through connection, and using co-creation to build shared ownership.03Writing Prdsrefoundai/lenny-skillsHelp users transform abstract ideas into actionable project specs that align engineering and design teams on the problem and success metrics.03Written Communicationrefoundai/lenny-skillsHelp users master professional writing to bridge gaps between stakeholders, scale their leadership influence, and ensure organizational clarity through structured narratives and async-first norms.03
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