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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Vitest Midscene E2eweb-infra-dev/midscene-skillsEnhances Vitest with Midscene for AI-powered UI testing across Web (Playwright), Android (ADB), and iOS (WDA). Scaffolds new projects, converts existing projects, and creates/updates/debugs/runs E2E tests using natural-language UI interactions. Triggers: write test, add test, create test, update test, fix test, debug test, run test, e2e test, midscene test, new project, convert project, init project, 写测试, 加测试, 创建测试, 更新测试, 修复测试, 调试测试, 运行测试, 新建工程, 转化工程.03 Vitest Testingexistential-birds/beagleVitest testing framework patterns and best practices. Use when writing unit tests, integration tests, configuring vitest.config, mocking with vi.mock/vi.fn, using snapshots, or setting up test coverage. Triggers on describe, it, expect, vi.mock, vi.fn, beforeEach, afterEach, vitest.07 Vitest Testingsecondsky/claude-skillsModern TypeScript/JavaScript testing with Vitest. Fast unit and integration tests, native ESM support, Vite-powered HMR, and comprehensive mocking. Use for testing TS/JS projects.01 Vm And Bytecode Reverseyaklang/hack-skills>-01 Vocabularyindex-how/vocabularyThe precise design and UI vocabulary used on index.how/to/articulate — covering typography, color, iconography, layout, interaction, motion, accessibility, information architecture, copywriting, tools, analysis, and components. Use when reaching for the exact word for a design concept ("what's the term for the space between two specific letters?"), when a UI idea is described loosely and needs its proper name, when choosing between confusable near-synonyms (badge vs tag, tooltip vs popover, opacity vs visibility, kerning vs tracking), or when writing or reviewing copy, specs, or commits and you want exact terminology instead of vague language.03 Voicesimota/agent-skillsCollecting user feedback via NPS surveys, review analysis, sentiment analysis, feedback classification, and insight extraction reports. Use when establishing feedback loops.011 Voice Agentssickn33/agentic-awesome-skillsVoice agents represent the frontier of AI interaction - humans02 Voice AI Developmentsickn33/agentic-awesome-skillsExpert in building voice AI applications - from real-time voice02 Voice AI Integrationshengwang-community/skills|026 Voice 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.01 Voice Batch Runnerpostplusai/postplus-skillsExecute approved voice design or cloning requests from scripts and persona references. Return reusable audio takes and saved run results with consistent voice identity.01 Voice Buildercharlie947/social-media-skills>02 Voice Callopenclaw/openclawStart voice calls via the OpenClaw voice-call plugin.01 Voice Changerelevenlabs/skillsTransform the voice in an audio recording into a different target voice while preserving emotion, timing, and delivery using the ElevenLabs Voice Changer (speech-to-speech) API. Use when converting one voice to another, changing the speaker/narrator of an existing recording, dubbing a voice-over in a different voice, creating character voices from a scratch performance, anonymizing a speaker, or any "voice conversion / voice transfer / speech-to-speech" task. Make sure to use this skill whenever the user mentions voice changing, voice conversion, speech-to-speech, swapping a voice in audio, re-voicing a clip, or applying a different voice to an existing recording — even if they don't explicitly say "voice changer". Do not use this skill to create or clone a new voice from a voice sample — that is voice cloning (IVC/PVC), a separate feature; this skill only converts an existing recording into an existing voice_id.02 Voice Dossier Builderaaron-he-zhu/aaron-marketing-skillsUse when the user asks to "codify how our founder sounds", "build a founder voice dossier", or "set our content pillars"; runs an 80%-extraction interview over the user''s OWN posts, emails, and decks (never competitor scraping, never an invented persona) and produces the versioned voice record — a per-platform register map (incl. 小红书/微信公众号), banned phrases, per-context disclosure lines (the ECHO C2 upstream), a few-shot bank built exclusively from own posts, and 3-5 content pillars with Estimated %-allocations — submitted via memory/events/channels.ndjson for channel-registry to store as voice-dossier.md, the record every Craft-phase skill reads first. Not for the brand-level voice canon — use brand-language-codifier; not for audience/persona research — use audience-mapper. 声音档案/品牌语气/创始人语气/内容支柱/披露声明01 Voice Extractorbrianrwagner/ai-marketing-claude-code-skillsExtract and document someone's authentic writing voice from samples. Use when someone needs a "voice guide," wants to capture their writing DNA, or needs to train AI to write in their style. Also useful for ghostwriting, brand voice documentation, or onboarding writers.03 Voice Extractorelvisun/newsjackCapture a user's real writing voice from 5-20 prior samples, store a local voice.yaml fingerprint, and enforce it on newsjack drafts so AI tells disappear. Measures voice with named stylometry lenses (Burrows's Delta function-word vector, MATTR lexical diversity, sentence-length burstiness, Biber Dimension-1 register, opener-POS profile, punctuation rates) and gates drafts against the fingerprint as bands, not vibes.01 Voice Isolatorelevenlabs/skillsRemove background noise and isolate vocals/speech from audio using ElevenLabs Voice Isolator (audio isolation) API. Use when cleaning up noisy recordings, removing music or background ambience from dialogue, isolating speech from field recordings, preparing audio for transcription, extracting vocals, or any "denoise / clean up / isolate voice" task.02 Voice Of Customer Minerdeanpeters/product-manager-skillsMine public reviews, app stores, and forums for unmet needs, competitor weaknesses, and switching triggers — with quoted evidence. Use when you want customer voice without waiting on interviews.04 Voicebox Voice Synthesisreason-machines/trending-skillsExpert skill for Voicebox — the open-source local voice cloning and TTS studio built with Tauri, React, and FastAPI01 Volatility Modelingagiprolabs/claude-trading-skillsVolatility estimation, forecasting, and regime classification using GARCH, EWMA, realized volatility, and volatility cones05 Volatility Modelingjoellewis/finance_skillsModel, forecast, and interpret volatility using time-series models and options-implied measures. Use when the user asks about EWMA, GARCH models, implied volatility, volatility surfaces, volatility term structure, or the VIX. Also trigger when users mention 'volatility smile', 'volatility skew', 'realized vs implied vol', 'volatility risk premium', 'vol clustering', 'mean-reverting volatility', 'options pricing inputs', 'RiskMetrics', 'decay factor', or ask how to forecast future volatility for risk management.02 Volcengine Video Understandingfreestylefly/canghe-skills火山视频理解 - 使用火山方舟视频理解 API 分析视频内容。通过 Files API 上传视频（推荐），支持大文件（最大512MB），可用于视频内容分析、物体识别、动作理解等。当用户需要分析视频、理解视频内容、提取视频信息时激活此技能。02 Volleyball Datamachina-sports/sports-skills|03 Voltagent Best Practicesvoltagent/skillsVoltAgent architectural patterns and conventions. Covers agents vs workflows, project layout, memory, servers, and observability.01 Voltagent Docs Bundlevoltagent/skillsLook up VoltAgent documentation embedded in node_modules/@voltagent/core/docs for version-matched docs. Use for API signatures, guides, and examples.01 Von Restorff Effectowl-listener/designer-skillsApply the Von Restorff Effect — the element that differs from its neighbours is the one remembered. Use when a single action must dominate. For overall ordering rather than single-element emphasis, use `visual-hierarchy`.01 Voxel Itpika-labs/pika-plugins>01 Vp Cpo Readiness Advisordeanpeters/product-manager-skillsGuide the transition to VP or CPO across preparing, interviewing, landing, and recalibrating. Use when executive product scope is changing fast.02 Vscode Ext Commandsgithub/awesome-copilotGuidelines for contributing commands in VS Code extensions. Indicates naming convention, visibility, localization and other relevant attributes, following VS Code extension development guidelines, libraries and good practices01 Vscode Ext Localizationgithub/awesome-copilotGuidelines for proper localization of VS Code extensions, following VS Code extension development guidelines, libraries and good practices01 Vsl Storyboard Writerncklrs/startup-os-skillsExpert VSL (Video Sales Letter) and product marketing video storyboard writer. Use when creating sales videos, product demos, explainer videos, social media video content, or marketing video scripts. Use when asked to "write a video script", "create a VSL", "storyboard a sales video", or "script a product demo". Produces storyboard scripts optimized for handoff to motion designer and Remotion video production.011 Vss Ask Videonvidia/skillsUse this skill to ask the VSS agent's video_understanding tool a fresh visual question about a recorded clip. Not for prior tool output, search hits, or metadata-answerable questions.06 Vss Deploy Dense Captioningnvidia/skillsUse this skill when deploying standalone RT-VLM dense captioning or calling its REST API (uploads, captions, streams, chat-completions, Kafka). Not for VSS profile deploy or video-search ingestion.011 Vss Deploy Detection Tracking 2dnvidia/skillsUse this skill when the user wants to deploy, run, debug, tear down, or call the REST API of the RTVI-CV 2D detection / tracking microservice. Trigger when the user says things like 'deploy rtvi-cv', 'start warehouse 2d', 'add a stream', 'check rtvi-cv health', or 'stop the perception container'. Not for VLM, embedding, or analytics — use the matching vss-* skill.051 Vss Deploy Detection Tracking 3dnvidia/skills>014 Vss Deploy Profilenvidia/skillsUse to select, configure, deploy, verify, debug, or tear down a VSS profile (base, search, lvs, warehouse, edge). Not for standalone microservices — use the vss-deploy-* skill.030 Vss Deploy Video Embeddingnvidia/skills>012 Vss Generate Video Calibrationnvidia/skillsUse to run AutoMagicCalib on local MP4s, RTSP, or the bundled sample dataset, and to deploy vss-auto-calibration when needed. Do not use for non-AMC calibration or runtime analytics.012 Vss Generate Video Reportnvidia/skillsUse this skill when producing a VSS analysis report — Mode A per-clip VLM, Mode B incident-range via video-analytics. Not for standalone video summarization, real-time alerts or ad-hoc Q&A.08 Vss Manage Alertsnvidia/skillsUse for VSS alert workflows — real-time monitoring, Alert-Bridge subscriptions, Slack notifications, incident queries, camera onboarding. Not for non-alert analytics.020 Vss Manage Video Io Storagenvidia/skillsUse to call the VIOS REST API (sensor list, timelines, clip extraction, snapshots, add/delete sensors and streams). Not for VLM inference or search.011 Vss Query Analyticsnvidia/skillsUse this skill when reading video-analytics metrics, incidents, alerts, and sensor data via the VA-MCP server (port 9901). Not for live VLM or incident-range narrative reports.06 Vss Search Archivenvidia/skillsUse this skill to run top-level VSS fusion search on archived video, or to ingest video files / RTSP streams for search. Do NOT use for ad-hoc visual Q&A (use vss-ask-video), live captioning (use vss-deploy-dense-captioning), or video summarization and reports (use vss-summarize-video).08 Vss Setup Behavior Analyticsnvidia/skillsUse to deploy the vss-behavior-analytics service standalone (entrypoint, config-source, optional calibration). Not for the full warehouse deploy.011 Vss Setup Video Analytics APInvidia/skillsUse to deploy the vss-video-analytics-api REST service standalone (config-source, data-log bind, Elasticsearch, optional Kafka). Not for full warehouse deploy.09 Vss Summarize Videonvidia/skillsUse to summarize a recorded video via the LVS summarization microservice (HITL-gated) with a VLM fallback. Not for report generation or live RTSP captioning.014 Vtex Io Admin Reactvtex/skillsApply when building VTEX IO admin-facing React interfaces under the admin builder. Covers VTEX Styleguide and Shoreline usage, admin page composition, data-heavy admin interactions, and keeping administrative interfaces consistent with the VTEX Admin environment. Use for settings pages, moderation tools, dashboards, or operational UIs inside VTEX Admin.01

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