Skills
100,696 packaged capabilities and playbooks for agents. Install any of them with one command.
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Create ridiculously good content using Ann Handley's "Everybody Writes" methodology—practical, reader-focused writing that serves your audience and achieves your goals. Use when: **Write blog posts** that engage and convert readers; **Create email content** that gets opened and clicked; **Craft social media posts** that stop the scroll; **Develop website copy** that speaks to your audience; **Write thought leadership** that builds credibility
Universal context management and planning system. PROACTIVELY activate for: (1) ANY complex task requiring planning, (2) Multi-file projects/websites/apps, (3) Architecture decisions, (4) Research tasks, (5) Refactoring, (6) Long coding sessions, (7) Tasks with 3+ sequential steps. Provides: optimal file creation order, context-efficient workflows, extended-thinking delegation (~23x context efficiency), passive deep-analysis architecture, progressive task decomposition. Environment-agnostic — works for Web, API, and Claude Code CLI.
Resolves a PostHog experiment reference from natural language to a concrete experiment ID by browsing `experiment-list` (not feature-flag tools), with disambiguation when multiple experiments match. Use when the user names or quotes an experiment (“split test demo,” “the File engagement boost experiment,” “onboarding retention test,” “landing page hero experiment,” “pricing experiment”), describes it loosely (“the signup experiment,” “my pricing test,” “the one with the new checkout”), uses a relative reference (“latest,” “most recent,” “the one I created yesterday”), filters by status (running, draft, paused, exposure frozen, stopped, archived), or otherwise refers to an experiment by anything other than its concrete ID.
Break down complex problems to their fundamental truths, then reason up from there. Master Aristotle's ancient method modernized by Elon Musk to solve seemingly impossible problems. Use when: **Facing a \"impossible\" problem** where conventional solutions don't work; **Challenging industry assumptions** that everyone accepts as truth; **Pricing or cost analysis** to find dramatic savings (like Musk with batteries); **Product innovation** when iterating on existing solutions isn't enough; **Str...
Query Apple Health SQLite database for vitals, activity, sleep, and workouts. Supports Markdown, JSON, and FHIR R4 output formats. This skill should be used when analyzing health metrics, generating health reports, answering questions about fitness or sleep patterns, or exporting health data in standard formats.
Use when asked to "jobs to be done", "JTBD", "why customers churn", "prep for customer interviews", "hire and fire products", or "find real competitors". Helps discover unmet needs and the context behind purchasing decisions. The Jobs to be Done framework (created by Clayton Christensen and Bob Moesta) explains why customers hire and fire products.
Use KERNEL managed auth or vault credentials after choosing a browser path that genuinely requires an authenticated website ui or authenticated browser behavior. prefer a dedicated api, cli, mcp server, or authoritative local records for operations they support; a url alone does not require browser auth. reuse or create auth connections, complete hosted login without abandoning the task, launch profile-backed browsers with telemetry, and handle reauthentication safely. for per-user vault credentials, let the user choose KERNEL-hosted collection or 1Password brokered approval, and fill only with explicit approval.
Use this skill when the user asks to "design multi-agent system", "implement supervisor pattern", "create swarm architecture", "coordinate multiple agents", or mentions multi-agent patterns, context isolation, agent handoffs, sub-agents, or parallel agent execution
Use when building or editing AI inside an n8n workflow: the AI Agent node, Text Classifier, Information Extractor, Sentiment Analysis, Summarization Chain, Basic LLM Chain, embeddings, vector stores, single one-shot LLM calls, or AI media generation (image / audio / video) via the native LangChain provider nodes. Also when a first-class n8n Agent can’t do the job: trigger data mapped exactly into tool parameters, or memory shared across workflows. Triggers on any `@n8n/n8n-nodes-langchain.*` node, “AI Agent node”, “LLM with tools”, “tool calling”, “fromAi”, “system prompt”, “memory window”, “structured output”, “outputParser”, “RAG”, “vector store”, “embeddings”, “classify with AI”, “extract fields with LLM”, “sentiment analysis”, “summarize with LLM”, “single LLM call”, chat triggers with files, Slack / Discord / Teams / Telegram bot workflows, AI image / video / audio generation, or any multi-turn or one-shot LLM step in a workflow.
Bring the Open Design catalogue into any agent session: 150+ brand DESIGN.md files, 110+ rendering templates (decks, prototypes, dashboards, posters, image/video/audio), 130+ functional skills, and 11 craft references. Pick a brand spec and a template/skill, layer in universal craft rules, then follow the resulting workflow. Use when the user wants to build a deck, prototype, landing page, dashboard, marketing artifact, or apply a specific brand's visual identity to their project.
Search, read, and manage Outline wiki documents. Use when: (1) searching wiki for documentation, (2) reading wiki pages or articles, (3) listing wiki collections or documents, (4) creating or updating wiki content, (5) exporting documents as markdown. Works with any Outline wiki instance (self-hosted or cloud).
This skill should be used when converting academic papers into promotional and presentation formats including interactive websites (Paper2Web), presentation videos (Paper2Video), and conference posters (Paper2Poster). Use for paper dissemination, conference preparation, creating explorable academic homepages, generating video abstracts, or producing print-ready posters from LaTeX or PDF sources.
Free Google Hotels CLI — per-hotel data with deep booking links, agent-native JSON, and local wishlist. No API key. Trigger phrases: `find a hotel in <city>`, `search hotels for <city> <dates>`, `cheapest dates for <city>`, `hotels near <address>`, `compare hotel prices for <city>`, `what hotels are available in <city>`, `save this hotel`, `use hotel-goat`, `run hotel-goat`.
Designs and audits PCR and RT-qPCR primers with Primer3, explicit thermodynamic conditions, reference-based off-target amplification searches, and traceable sequence coordinates. Use for designing primer pairs, checking existing primers, exon-junction or isoform-specific assays, variant masking, cloning tails, multiplex compatibility, and interpreting Primer-BLAST results. Includes bounded local in-silico PCR and BLAST screening; distinguishes computational candidates from experimentally validated assays.
Bug bounty report writing for H1/Bugcrowd/Intigriti/Immunefi — report templates, human tone guidelines, impact-first writing, CVSS 3.1 scoring, title formula, impact statement formula, severity decision guide, downgrade counters, pre-submit checklist. Validation gates and the submittability/always-rejected decision are owned by triage-validation; this skill owns the written report itself (templates, tone, formulas). Use after validating a finding and before submitting. Never use "could potentially" — prove it or don't report.
Use when adding or fixing sound in Godot 4.7: audio buses and effects, volume sliders, 'too many sounds', combat audio with hundreds of enemies, sounds clipping or distorting, 3D sound too quiet or not panning, reverb zones not working, occlusion, adaptive or interactive music (AudioStreamInteractive, layers, stingers), music loops with gaps, SFX that repeat, AudioStreamRandomizer, AudioStreamGenerator, import settings, or importing AI-generated music, SFX and voice from Scenario or ElevenLabs.
Generate 30+ LinkedIn posts that attract your target prospects. Creates industry insights, thought leadership, engagement prompts, and comment strategies. Use when building personal brand to attract inbound leads through social selling.
Turn fuzzy work into one honest estimate packet by choosing the right sizing horizon, naming confidence and uncertainty, and separating discovery from delivery before anyone treats the number like a promise. Use when the user needs story points, t-shirt sizing, planning-poker prep, forecast-safe language, split-or-spike guidance, or cross-functional sizing across developer workflow, web/fullstack, product/ops, marketing/GTM, or game work. Route decomposition to `task-planning`, daily coordination to `standup-meeting`, and retrospective process learning to `sprint-retrospective`.
Implement authentication and authorization with Better Auth - a framework-agnostic TypeScript authentication framework. Features include email/password authentication with verification, OAuth providers (Google, GitHub, Discord, etc.), two-factor authentication (TOTP, SMS), passkeys/WebAuthn support, session management, role-based access control (RBAC), rate limiting, and database adapters. Use when adding authentication to applications, implementing OAuth flows, setting up 2FA/MFA, managing user sessions, configuring authorization rules, or building secure authentication systems for web applications.
Automatically creates user-facing changelogs from git commits by analyzing commit history, categorizing changes, and transforming technical commits into clear, customer-friendly release notes. Turns hours of manual changelog writing into minutes of automated generation.
All-purpose Feishu/Lark operations Agent (messages/documents/bitable/calendar/tasks/users). Skill selection rules: - Send a plain text message → this skill (msg send) - Send rich text/cards → feishu-post / feishu-card - Check attendance → feishu-attendance - All other Feishu operations → this skill. Trigger phrases (any match invokes it): send Feishu, message someone, check group messages, reply on Feishu, search Feishu messages, list group chats, create a Feishu doc, read a Feishu doc, check bitable, add a bitable record, update a table, Feishu calendar, check schedule, add an event, Feishu tasks, create a task, complete a task, check Feishu users, find a contact, get open_id
Finds the most informative session recording linked to an error tracking issue. Use when a user has an error tracking issue ID and wants to watch a replay showing what the user was doing when the error occurred. Ranks linked sessions by recency, activity score, and journey completeness, then summarizes the pre-error context. Replaces blind session picking from potentially hundreds of linked recordings
Analyzes flow cytometry data with FlowKit, including spillover compensation, logicle and biexponential transforms, hierarchical gating, GatingML strategies, and supported FlowJo 10 workspaces. Use for reproducible gate counts, population percentages, gated fluorescence summaries, or reproducing a FlowJo analysis in Python. For FCS metadata inspection or file-format repair alone, use FlowIO.
Designs graphics for thumbnails, social media, banners, and presentations. Applies design principles (CRAP, Gestalt, visual hierarchy) with research-backed techniques. Integrates with /geometric-elements for decorative assets. Use when creating layouts, choosing typography/colors, or designing any graphic assets. For photography/cinematography prompts, use /art-director instead.
Guide users through installing, connecting, and configuring the official Lingxing (Lingxing) MCP, and troubleshoot connection, authentication, permission, and client compatibility issues. Trigger keywords: Lingxing, Lingxing ERP, Lingxing, Lingxing MCP, Lingxing MCP, install Lingxing MCP, configure Lingxing MCP, connect Lingxing MCP, reconfigure Lingxing MCP, MCP Server URL, X-MCP-KEY, X-Mcp-Key, Lingxing MCP authentication failure, Lingxing MCP connection failure.
Generate Power BI report visual design guidance before PBIR files are written. Use when the user wants to: (1) choose tone, signature, page archetypes, chart types, layout, color, typography, theme direction, or accessibility approach, (2) redesign/restyle an existing report, apply a brand, or critique chart/layout choices, (3) produce a design contract for `powerbi-report-authoring`. For end-to-end requirements, approval, and build sequencing, use `powerbi-report-planning`. Triggers: "design Power BI report", "make dashboard look professional", "choose chart type", "apply brand to report", "redesign report", "create design brief", "Power BI report design archetype".
Tail Digg's news cycle, GitHub feeds, and pipeline events from the terminal—read-only, with rank-history nobody else surfaces. Trigger phrases: `what's trending on Digg`, `digg top stories`, `digg github stars`, `digg github recent`, `what climbed the AI news rankings`, `digg leaderboard`, `what got replaced on Digg`, `tail the Digg pipeline`, `use digg`, `run digg-pp-cli`.
Profile a website for bot detection vendors using stealth vs non-stealth Kernel browsers, and check Kernel's config registry for a tested configuration. Use when analyzing bot detection on a website, comparing stealth effectiveness, identifying anti-bot vendors and products, detecting challenge types, or finding a browser configuration that gets through.
Simulates lithium-ion battery charge, discharge and rest experiments with PyBaMM, records parameter-set provenance, checks mesh and solver sensitivity, and compares predicted voltage curves with measured cycling data. Use for SPM or DFN electrochemical battery modeling, C-rate protocols, voltage cutoffs, parameter studies and numerical validation of battery simulations.
New to MCP?
From what the protocol is to installing your first server, these answers cover most first questions.
An open protocol that defines how AI applications connect to external tools and data in a uniform way. Clients talk to the model; MCP servers provide tools, resources and prompt templates. They exchange standard messages, so one server can be reused by many clients.