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

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18,175 skills

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V4 Security Foundationsuniswap/uniswap-aiSecurity-first Uniswap v4 hook development. Use when user mentions "v4 hooks", "hook security", "PoolManager", "beforeSwap", "afterSwap", or asks about V4 hook best practices, vulnerabilities, or audit requirements.04 Vaexk-dense-ai/scientific-agent-skillsUse this skill for processing and analyzing large tabular datasets (billions of rows) that exceed available RAM. Vaex excels at out-of-core DataFrame operations, lazy evaluation, fast aggregations, efficient visualization of big data, and machine learning on large datasets. Apply when users need to work with large CSV/HDF5/Arrow/Parquet files, perform fast statistics on massive datasets, create visualizations of big data, or build ML pipelines that do not fit in memory.07 Valgrindmohitmishra786/low-level-dev-skillsValgrind profiler skill for memory error detection and cache profiling. Use when running Memcheck to find heap corruption, use-after-free, memory leaks, or uninitialised reads; or Cachegrind/Callgrind for cache simulation and function-level profiling. Activates on queries about valgrind, memcheck, heap leaks, use-after-free without sanitizers, cachegrind, callgrind, KCachegrind, or massif memory profiling.02 Valibotopen-circle/agent-skillsSchema validation with Valibot, the modular and type-safe schema library. Use when the user needs to validate data, create schemas, parse inputs, or work with Valibot in their project. Also use when migrating from Zod to Valibot.02 Validatescaccogatto/okf-skills>-02 Validate Agentparcadei/continuous-claude-v3Validation agent that validates plan tech choices against current best practices01 Validate Changes Match Specswarpdotdev/common-skillsValidate that a branch or pull request implementation matches introduced product, technical, security, and related specs. Use when reviewing or finishing a spec-driven change and resolving mismatches between checked-in specs and implementation.01 Validate Dataanthropics/knowledge-work-pluginsQA an analysis before sharing -- methodology, accuracy, and bias checks. Use when reviewing an analysis before a stakeholder presentation, spot-checking calculations and aggregation logic, verifying a SQL query's results look right, or assessing whether conclusions are actually supported by the data.01 Validate Evaluatorai-evals-course/evals-skills>02 Validate Evaluatorhamelsmu/evals-skills>01 Validate Ideaslavingia/skillsValidate a business idea using the minimalist entrepreneur framework. Use when someone has a business idea and wants to test if it's worth pursuing before building anything.01 Validate Implementation Planb-mendoza/agent-skillsAudits an implementation plan for requirements traceability, avoidable complexity, risky assumptions, and evidence gaps. Use when reviewing an AI-generated or human-authored plan, design proposal, implementation outline, task breakdown, or architecture plan and the user wants a standalone audit report without overwriting the source plan.014 Validate Pluginruvnet/rufloValidate a Claude Code plugin structure, frontmatter, and MCP tool references01 Validate Skillscallstackincubator/agent-skillsValidates skills in this repo against agentskills.io spec and Claude Code best practices. Use via /validate-skills command.01 Validate Urp Render Graph Renderer Featureunity-technologies/skillsUse when the user wants to review or validate a Unity 6+ URP ScriptableRendererFeature that uses the Render Graph API. Checks for correctness issues - resource wiring, material binding, execution structure, descriptor usage, global resource exposure, and Render Graph best practices.01 Validation Patternswshaddix/dotnet-skillsComprehensive validation patterns for ASP.NET Core applications. Covers FluentValidation integration, DataAnnotations, IValidatableObject, IValidateOptions<T>, MediatR pipeline behavior, and client-side validation. Use when implementing validation in ASP.NET Core applications, setting up FluentValidation, creating custom validators, configuring options validation, or implementing cross-field validation.01 Valtiohairyf/skillsValtio proxy state management for React and vanilla JavaScript. Use when creating reactive state, managing application state, or working with proxy-based state management.017 Valtio Definehairyf/skillsComprehensive skills for working with valtio-define012 Valuation Pricing Frameworkwind-alice/alicemarket用于估值与定价框架，聚焦估值分析 / 定价逻辑 / 投资决策。本skill主要用户问题回答、撰写报告、撰写金融类文章等场景。本报告输出内容较多，不适合简单对话场景。各类信息与数据的获取，可以使用wind.financial.data工具，以合理的关键字或关键字组合进行获取。用户想知道一家公司应该怎么估值、当前估值处于什么水平、市场为什么愿意给这个估值、还有没有重估空间。01 Valuehugmouse/skillsskill does absolutely nothing, as well as the agent that uses it.01 Value Creation Plananthropics/financial-servicesStructure post-acquisition value creation plans with revenue, cost, and operational levers mapped to an EBITDA bridge. Includes 100-day priorities, KPI targets, and accountability frameworks. Use when planning post-close execution, preparing operating partner materials, or building a board-ready value creation roadmap. Triggers on "value creation plan", "100-day plan", "post-close plan", "EBITDA bridge", "operating plan", or "value creation levers".01 Value Dividend Screenertradermonty/claude-trading-skillsScreen US stocks for high-quality dividend opportunities combining value characteristics (P/E ratio under 20, P/B ratio under 2), attractive yields (3% or higher), and consistent growth (dividend/revenue/EPS trending up over 3 years). Supports two-stage screening using FINVIZ Elite API for efficient pre-filtering followed by FMP API for detailed analysis. Use when user requests dividend stock screening, income portfolio ideas, or quality value stocks with strong fundamentals.07 Value Prop Statementsphuryn/pm-skillsGenerate value proposition statements for marketing, sales, and onboarding from existing value propositions. Use when writing marketing copy, creating sales messaging, or crafting onboarding messages.01 Value Propositionphuryn/pm-skillsDesign a detailed value proposition using a 6-part JTBD template — Who, Why, What before, How, What after, Alternatives. Use when creating a value proposition, analyzing customer value delivery, or articulating why customers should choose your product.01 Value Realizationdone-0/value-realizationJudge whether something actually produces value in a concrete scenario. Value is a beneficial relational property between subject and object, conditioned on the states of both sides, that only holds in a specific scenario. Typical uses: judging whether a value proposition holds, mapping a capability to a concrete use scenario, diagnosing why no one uses it or why they don't stick, clarifying how to position or state the value, assessing whether something is worth investing in, or judging whether you can borrow someone else's approach (e.g. \"is this idea sound?\", \"does anyone actually want this?\", \"why did we roll it out and no one uses it?\", \"why do people try it once and never come back?\", \"can we copy what someone else did?\"). When the thing being judged has a decision-maker (who pays / signs off) that is not the same as the actual end user (enterprise software, internal platforms, etc.), first state which side you're analyzing for and split the two value relationships to run separately.09 Valyu Best Practicesvalyuai/skillsComplete Valyu API toolkit for AI agents. Use this skill when asked to perform real-time search across web, academic, medical, transportation, financial sources, content extraction from URLs, AI-powered answers with citations, or comprehensive deep research reports.047 Vanilla Webjanjaszczak/cursorBuild or modify plain HTML/CSS/JavaScript (no framework) using modular ES modules (ESM), SRP, minimal global state, and shippable runnable files with lightweight verification. Use for static pages, small UI widgets, vanilla JS refactors, and quick prototypes without React/Vue/Angular.04 Vanity Engineering Reviewbencium/bencium-marketplace>03 Vantajsmengto/skillsUse when adding animated WebGL background effects with Vanta.js (setup, parameters, resizing, performance, integration in React/Next.js).05 Vara Skillsgear-foundation/vara-skillsUse when a builder needs the top-level router for the provisional standard Gear/Vara Sails skill pack across Codex, Claude, or OpenClaw. Covers standard Sails apps and ethexe-specific work via dedicated skills. Do not use for non-Sails programs or broad protocol research.0173 Variance Analysisanthropics/knowledge-work-pluginsDecompose financial variances into drivers with narrative explanations and waterfall analysis. Use when analyzing budget vs. actual, period-over-period changes, revenue or expense variances, or preparing variance commentary for leadership.01 Variance Commentaryanthropics/financial-servicesWrite flux commentary for every P&L and balance-sheet line over threshold — current vs prior period and vs budget, with the driver explained from underlying activity. Use for the month-end close package and management reporting.01 Variant Analysistrailofbits/skillsHunts for the other instances of a bug already found — the variants of one root cause across a codebase. Use immediately after a vulnerability, logic bug, or bad pattern turns up in a specific file and the question becomes where else it occurs, including the bare conversational form ("are there others like this?", "is this the same bug?"). Also for generalizing one known instance into a CodeQL or Semgrep query for its whole pattern family, and for triaging a set of look-alike candidates against a known root cause. Not for initial discovery with no bug in hand.018 Varlockdmno-dev/varlock>-01 Vast GPUwanshuiyin/auto-claude-code-research-in-sleepRent, manage, and destroy GPU instances on vast.ai. Use when user says \"rent gpu\", \"vast.ai\", \"rent a server\", \"cloud gpu\", or needs on-demand GPU without owning hardware.01 Vastaivast-ai/vast-cliVast.ai CLI to manage GPU instances, volumes, serverless endpoints, and billing.097 Vault Skill Factoryar9av/obsidian-wiki>01 Vc Attention Teneoteneoprotocolai/teneo-skillsAI agent for VC Attention via Teneo Protocol. Use this skill when the user needs VC Attention via the bundled Teneo CLI and you need the live commands, arguments, or pricing before execution.01 Vcp Screenertradermonty/claude-trading-skillsScreen S&P 500 stocks for Mark Minervini's Volatility Contraction Pattern (VCP) and detect historical VCPs in a single ticker's price path. Identifies Stage 2 uptrend stocks forming tight bases with contracting volatility near breakout pivot points; in historical single-ticker mode walks a multi-year history and emits every VCP that formed with forward-outcome stats (breakout / stop-hit / timeout). Use when user requests VCP screening, Minervini-style setups, tight base patterns, volatility contraction breakout candidates, Stage 2 momentum stock scanning, or historical VCP pattern study on a specific ticker (e.g. FIX, TSLA).026 Vector Clusterruvnet/rufloCluster code by graph community detection via npx ruvector@0.2.25 hooks graph-cluster (spectral / Louvain)01 Vector Database Engineersickn33/agentic-awesome-skillsExpert in vector databases, embedding strategies, and semantic search implementation. Masters Pinecone, Weaviate, Qdrant, Milvus, and pgvector for RAG applications, recommendation systems, and similar02 Vector Database Managementmanutej/luxor-claude-marketplaceComprehensive guide for managing vector databases including Pinecone, Weaviate, and Chroma for semantic search, RAG systems, and similarity-based applications04 Vector Embedruvnet/rufloGenerate embeddings via npx ruvector@0.2.25 embed text (ONNX all-MiniLM-L6-v2, 384-dim), normalize, and store in HNSW index01 Vector Forgetrailofbits/skillsMutation-driven test vector generation. Finds implementations of a cryptographic algorithm or protocol, runs mutation testing to identify escaped mutants, then generates new test vectors that deliberately exercise the uncovered code paths. Compares before/after mutation kill rates to prove vector effectiveness. Use when generating cryptographic test vectors, measuring Wycheproof coverage gaps, finding escaped mutants via mutation testing, creating cross-implementation test suites, or improving test vector coverage for crypto primitives.08 Vector Hyperbolicruvnet/rufloEmbed hierarchical data via npx ruvector@0.2.25 embed text and project into the Poincare ball in user code (no --model poincare flag in 0.2.25)01 Vector Index Tuningwshobson/agentsOptimize vector index performance for latency, recall, and memory. Use when tuning HNSW parameters, selecting quantization strategies, or scaling vector search infrastructure.02 Vector Searchruvnet/rufloVector search via embeddings_* (large-scale HNSW) and ruvllm_hnsw_* (WASM router for ≤11 hot patterns), with RaBitQ 1-bit quantization for 32× memory reduction01 Vector Setupruvnet/rufloFirst-run setup for ruvector@0.2.25 — installs ONNX/Brain/SONA add-ons, registers the MCP server, and verifies the install via `doctor`01

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