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
Namingjwynia/agent-skillsDiagnose why names don't work and guide creation of names that do. Use for brand names, product names, character names, place names, and titles when something feels off or when systematic naming is needed.02Novel Revisionjwynia/agent-skillsManage multi-level novel revisions while preventing cascade problems. Use when editing novels, when changes at one level break things at others, when you need systematic change management for long-form fiction, or when revisions keep creating new problems.01Oblique Worldbuildingjwynia/agent-skillsCreate worldbuilding quotes and epigraphs through documentary perspectives. Use for chapter epigraphs, in-world documents, or any content where limited perspective creates meaning through what the documenter cannot see.01Outline Coachjwynia/agent-skillsAct as an assistive outline coach who guides structural development through questions. Use when helping someone develop their own outline through diagnosis and frameworks. Critical constraint - never generate outline content. Instead ask questions, identify structural issues, suggest approaches, and let the writer structure.01Outline Collaboratorjwynia/agent-skillsAct as an active outline partner who develops structure collaboratively. Use when developing, iterating, or improving story outlines. Generates scene beats, character arcs, plot structures, and exploratory prose samples. Contrasts with story-collaborator which drafts finished prose.01PDF Generatorjwynia/agent-skillsCreate and manipulate PDF files programmatically. Use when the user needs to generate PDFs, fill PDF forms, extract PDF content, add watermarks/overlays, or merge documents. Supports both template-based generation (form filling, overlays) and from-scratch creation. Keywords: PDF, document, form, fillable, merge, watermark, extract, text, report.04Perspectival Constellationjwynia/agent-skillsStructure multi-POV stories through catalyst environments. Use when building interconnected narratives, when perspectives need meaningful intersection, or when a shared setting needs to generate distinct storylines.01Positional Revelationjwynia/agent-skillsGenerate stories where ordinary people become crucial through their structural position in systems. Use when you want protagonists who aren't chosen ones but accidental pivots, when mundane jobs should reveal conspiracies, or when you need structurally inevitable involvement rather than coincidence.01Pptx Generatorjwynia/agent-skillsCreate and manipulate PowerPoint PPTX files programmatically. Use when the user needs to generate presentations, modify PPTX templates, extract slide content, create thumbnail previews, or automate PowerPoint workflows. Supports both template-based generation (for branding compliance) and from-scratch creation. Keywords: PowerPoint, PPTX, presentation, slides, template, deck, slideshow, corporate, branding.08Presentation Designjwynia/agent-skillsDesign and evaluate presentations that communicate effectively. Use when designing a presentation, creating slides, getting presentation feedback, structuring a talk, or reviewing slides. Keywords: presentation, slides, talk, PowerPoint, Keynote, reveal.js.01Product Analysisjwynia/agent-skillsDiagnose competitive product analysis state and guide through systematic market evaluation. Use when analyzing a product category, building feature comparisons, understanding competitive landscape, building personas, or deciding build vs. buy. Routes to 6 interconnected frameworks based on current analysis state.014Prose Stylejwynia/agent-skillsDiagnose sentence-level issues after structure is solid. Use when prose feels flat, sentences are monotonous, word choices are generic, or voice is inconsistent.03Pwa Developmentjwynia/agent-skillsImplement Progressive Web App features for React and Svelte projects. This skill should be used when the user asks to 'make a PWA', 'add offline support', 'create a service worker', 'fix caching issues', or wants installable web apps. Keywords: PWA, service worker, offline, manifest, caching, installable, Workbox, vite-pwa.014Requirements Analysisjwynia/agent-skillsDiagnose requirements problems and guide discovery of real needs and constraints04Researchjwynia/agent-skillsDiagnose research quality and guide systematic query expansion. Use when starting research on any topic, when stuck in research, or when unsure if research is complete.02Research Workflowjwynia/agent-skillsGuide agents through structured research including planning, multi-query execution, source analysis, and synthesis. Use for comprehensive topic research, deep investigation, or creating research reports. Keywords: research, investigate, deep dive, comprehensive, analysis, synthesis, report.06Revealjs Presenterjwynia/agent-skillsGenerate RevealJS HTML presentations with reliable layout, professional typography, and effective visual communication. Use when creating slide decks, pitch presentations, technical talks, or any reveal.js output.04Reverse Outlinerjwynia/agent-skillsReverse-engineer published books into structured scene-by-scene outlines for study. Use when analyzing craft, learning story structure from masters, or creating teaching materials from existing works.09Revisionjwynia/agent-skillsGuide the edit pass after drafting. Use when revision feels overwhelming, when changes cascade unpredictably, when you can't see problems anymore, or when editing never ends.02Scene Sequencingjwynia/agent-skillsStructure scenes and control pacing using scene-sequel rhythm. Use when individual scenes work but don't accumulate, when pacing feels off (too rushed or too slow), when transitions feel mechanical, or when readers can follow but aren't compelled forward. Based on Dwight Swain's Goal-Conflict-Disaster and Reaction-Dilemma-Decision structure.02Scraper Builderjwynia/agent-skillsGuide AI agents to generate complete PageObject pattern web scraper projects using Playwright and TypeScript with Docker deployment. Supports agent-browser site analysis for automated selector discovery. Keywords: scraper, playwright, pageobject, web scraping, docker, typescript, data extraction, automation.022Security Scanjwynia/agent-skillsScan code for security vulnerabilities including OWASP Top 10, secrets, and misconfigurations. Use when you need comprehensive security analysis of a codebase.09Sensitivity Checkjwynia/agent-skillsEvaluate representation and flag potential harm concerns. Use when writing characters from marginalized groups, depicting sensitive subject matter, or wanting to check for stereotypes and harmful tropes.03Settlement Designjwynia/agent-skillsDesign cities, towns, and settlements for fictional worlds. Use when creating urban environments, mapping city districts, or when settlements need realistic layered development and spatial logic.01Shadcn Layoutsjwynia/agent-skillsGenerate correct shadcn/Tailwind layouts by applying CSS mental models. This skill should be used when the user asks to 'create a shadcn layout', 'fix layout issues', 'debug CSS height problems', 'make scrolling work', or has issues with Tailwind flex/grid. Keywords: shadcn, Tailwind, layout, CSS, flex, grid, height, scroll, overflow.03Shared Worldjwynia/agent-skillsMaintain a wiki-style world bible for collaborative fiction. Use for long-running story worlds, shared universes, membership sites, or any fiction requiring persistent canonical reference.09Skill Builderjwynia/agent-skillsBuild new agent skills. Use when creating diagnostic frameworks, CLI tools, or data-driven generators that follow the established skill patterns.06Sleep Storyjwynia/agent-skillsWrite stories designed to help listeners fall asleep. Use for bedtime podcasts, meditation content, calming narratives, or any content where the goal is gentle cognitive engagement that fades naturally into rest.01Speech Adaptationjwynia/agent-skillsTransform comprehensive written content into purposeful spoken guidance. Use when adapting for speech, converting to spoken format, optimizing for listening, or creating audio content from written material. Keywords: speech, audio, spoken, listening, adaptation, podcast.01Statistical Distancejwynia/agent-skillsTransform clichéd story elements by pushing along the emotional vector toward statistical edges. Use when first instincts are too predictable, when elements feel generic, or when you need the core methodology for avoiding statistical-center defaults.01Story Analysisjwynia/agent-skillsSystematically evaluate completed short stories or novel chapters to identify strengths, weaknesses, and improvement opportunities. Use after drafting to assess whether the piece achieves its narrative goals.01Story Coachjwynia/agent-skillsAct as an assistive writing coach who guides but never writes for the user. Use when helping someone develop their own writing through questions, diagnosis, and frameworks. Critical constraint - never generate story prose, dialogue, or narrative content. Instead ask questions, identify issues, suggest approaches, and let the writer write.01Story Collaboratorjwynia/agent-skillsAct as an active writing partner who contributes content alongside the human writer. Use when the writer wants a collaborator who generates prose, dialogue, alternatives, and builds on their ideas. Applies Story Sense frameworks while actively contributing to the creative work. Contrasts with story-coach which never writes.01Story Idea Generatorjwynia/agent-skillsGenerate story concepts using a genre-first approach. Use when starting a new project, when brainstorming ideas, when a concept needs strengthening, or when you want to ensure emotional impact drives the story.01Story Sensejwynia/agent-skillsDiagnose what any story needs regardless of its current state. This skill should be used when a writer is stuck, evaluating story problems, when narrative feels broken, or when someone asks 'what's wrong with my story?'. Keywords: story, diagnosis, stuck, narrative, plot, character, worldbuilding, revision.05Story Zoomjwynia/agent-skillsManage multi-level story synchronization. Use when changes at one abstraction level (pitch, structure, scenes, entities, prose) need to propagate to others, or when story elements feel inconsistent across levels.06Summarizationjwynia/agent-skillsCreate effective summaries by matching summarization type to purpose, audience, and context. Use when asked to summarize, create TLDR, condense content, or create executive summaries. Keywords: summary, TLDR, condense, executive summary, abstract.01System Designjwynia/agent-skillsDiagnose design problems and guide architecture decisions for solo developers05Systemic Worldbuildingjwynia/agent-skillsBuild worlds through cascading consequences from speculative changes. Use when introducing new technologies, species, or alternate histories and need to trace realistic societal transformations across multiple domains.01Table Tonejwynia/agent-skillsDiagnose and calibrate tonal delivery for tabletop RPG sessions. Use when narration feels flat, tone shifts jarringly, descriptions overwhelm play, or energy stays monotonous throughout sessions.01Task Breakdownjwynia/agent-skillsHelp neurodivergent users break down overwhelming tasks into manageable steps. Use when tasks feel paralyzing, when executive function is struggling, when someone can't start, or when the Wall of Awful has built up. Applies ADHD/autism-aware decomposition strategies.01Task Decompositionjwynia/agent-skillsTransform overwhelming development tasks into manageable units. This skill should be used when the user says 'task too big', 'can't estimate', 'overwhelmed by scope', 'where do I start', 'epic needs breakdown', or has dependency problems. Keywords: decomposition, breakdown, estimate, scope, INVEST, vertical slice, spike, dependencies.01Typescript Best Practicesjwynia/agent-skillsGuide AI agents through TypeScript coding best practices including type safety, error handling, code organization, and architecture patterns. This skill should be used when generating TypeScript code, reviewing TypeScript files, creating new TypeScript modules, refactoring JavaScript to TypeScript, or when the user asks about TypeScript patterns, types, or coding standards. Keywords: typescript, types, coding standards, best practices, type safety, generics, architecture, refactoring.018Voice Analysisjwynia/agent-skillsExtract and document a writer's distinctive voice patterns for consistent reproduction. Use when you need to capture writing voice, analyze writing style, create a voice guide, or write in someone's established style. Keywords: voice, tone, style, writing analysis, fingerprint.01Web Searchjwynia/agent-skillsSearch the web using the agent's built-in WebSearch tool. Use when you need to find current information, verify facts, or research topics. No API key required. Keywords: search, web, internet, lookup, find, research, current events, facts.01Web Search Tavilyjwynia/agent-skillsSearch the web using Tavily API for high-quality, AI-optimized results with advanced filtering options. Use when you need structured search results, domain filtering, relevance scores, or AI-generated answer summaries. Requires TAVILY_API_KEY. Keywords: tavily, advanced search, filtered search, domain filtering, relevance scoring.02World Fatesjwynia/agent-skillsManage long-term fate and fortune across a shared world. Use when powerful entities feel permanent, when the world becomes static, when you need probabilistic death/fall mechanics, or when campaigns need world-level consequences that persist. Operates above the game-facilitator level.010Worldbuildingjwynia/agent-skillsDiagnose world-level story problems. This skill should be used when settings feel thin, institutions feel designed rather than evolved, economies don't make sense, or non-human species feel like humans in costume. Keywords: worldbuilding, setting, world, institutions, economy, culture, species, consequences.01
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