Skills
101,174 packaged capabilities and playbooks for agents. Install any of them with one command.
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Competitor page gap analysis — take a query you want to win and the pages currently outranking you, and produce a concrete brief on what to add or change to compete. Compares content depth and coverage (subtopics they cover that you don't), structure (headings, format, tables, media), search-intent match, E-E-A-T signals, schema/rich-result eligibility, internal linking, and on-page optimization — across your page vs. the top-ranking competitors. Use this skill whenever the user wants to know why a competitor outranks them on a specific query, what a top-ranking page does better, a content-gap analysis against specific competitor URLs, or a brief to beat a specific SERP. Trigger on: "why does competitor X outrank me", "content gap analysis", "competitor page analysis", "what does the top result have that I don't", "how do I beat this page", "analyze competitor pages", "SERP gap", "compete for [keyword]". For seed keyword discovery use /keyword-research; for a content calendar use /content-planner.
Adds, changes, or reviews a screen, sheet, dialog, or destination slice (endpoint to repository to ViewModel to UI to navigation to DI to tests) in a Compose or CMP project. Use when adding a screen, building a new feature, adding a ViewModel or destination, wiring list/detail or a form screen, scaffolding a slice, or reviewing a feature change. Covers Contract.kt, launchGuarded wiring, SavedStateHandle drafts, the state matrix, and new-feature.sh. Do NOT use for routing or architecture (compose-architecture), pure refactors, Gradle work (compose-project), recomposition or styling (compose-ui), repository or persistence work (compose-data), or expect/actual splits (compose-platform).
Writes and reviews composables for Compose and CMP: the Route/Screen/leaf split, state-read placement and stability, loading/empty/error UX states, LazyColumn lists and grids, animation choice, accessibility and semantics, design-system tokens, CMP Res resources, Coil images, and keyboard/focus. Use when touching @Composable code, recomposition, stability, LazyColumn, animation, shimmer or skeleton, accessibility, theme, colors, Res.string, Coil, focus, or keyboard. Do NOT use for MVI, error tiers, or module graph (compose-architecture), ViewModel or data work (compose-feature, compose-data), Gradle or module work (compose-project), or expect/actual splits (compose-platform).
Use this skill to connect ADB to an Android 11+ device wirelessly with the modern `adb pair` flow (pairing code or QR via `Settings → Developer options → Wireless debugging`), then `adb connect <host:port>` and `adb disconnect`, plus mDNS auto-discovery via `adb mdns check` / `adb mdns services` and the `_adb-tls-pairing._tcp` / `_adb-tls-connect._tcp` service types. Covers the ADB v34+ default mDNS backend (Openscreen on Linux/Windows, not Bonjour as the public doc says), the legacy `adb tcpip <port>` + `adb connect` path that pre-dates pairing, security caveats (corporate Wi-Fi blocks p2p; flat LAN exposure), version requirements (Android 11/API 30 for phones, Android 13/API 33 for TV+Wear), and the `ADB_MDNS_OPENSCREEN` / `ADB_MDNS_AUTO_CONNECT` environment variables. Use when the user mentions `adb pair`, `adb connect`, "wireless debugging", "QR code pairing", `_adb-tls-connect`, "Openscreen vs Bonjour", `adb tcpip 5555`, or "device not connecting after pairing successfully".
Use when the user needs research methodology, long-form content creation, academic-style citations, fact-checking, or evidence-based writing with proper source attribution. Trigger conditions: whitepaper drafting, research article writing, source evaluation, citation management, fact-checking protocol, case study creation, evidence-based argumentation.
Audit the instructions an agent already carries — CLAUDE.md, AGENTS.md, skills, tool descriptions — for contradictions, over-constraint, and duplication, then propose a cut list. Use when an agent ignores its own instructions, when a CLAUDE.md has grown bloated, or when the user asks to audit or rightsize their agent context.
Generic cost estimation for IaC projects. Detects the IaC stack (Pulumi, Terraform) and compatible cost tool (finfocus, infracost), runs cost analysis, flags expensive resources, cost increases, and total cost against configurable thresholds. Produces a terminal summary and COST_CHECK.md report. Use when checking infrastructure costs, reviewing cost impact of changes, or enforcing budget thresholds in CI.
Drift analysis for Pulumi infrastructure costs. Runs finfocus to compare actual vs projected spend, flags drifting resources against configurable thresholds, generates likely-cause explanations with investigation prompts, and tracks drift trends over time. Produces a terminal summary and COST_DRIFT.md report. Use when investigating cost overruns, validating projections against reality, or monitoring spend drift in CI.
Create a database migration to add a table, add columns to an existing table, add a setting, or otherwise change the schema of Ghost's MySQL database. Use this skill whenever the task involves modifying Ghost's database schema — including adding, removing, or renaming columns or tables, adding new settings, creating indexes, updating data, or any change that requires a migration file in ghost. Also use when the user references schema.js, knex-migrator, the migrations directory, or asks to "add a field" or "add a column" to any Ghost model/table. Even if the user frames it as a feature or Linear issue, if the implementation requires a schema change, this skill applies.
Interactive orchestrator that builds a feature from its CodeSpring plan. It interviews the user about what they're building, checks the feature has enough context (notes + Frontend/Backend PRDs) and a numbered task list, guides them to fill any gaps, then builds the Kanban tasks — optionally spawning up to 5 parallel sub-agents — while guarding the shared systems it could break. Use when the user wants to build/implement a feature they planned in CodeSpring. Triggers, "build this feature", "implement my feature", "start building from CodeSpring", "let's build X", "work through my Kanban tasks".
Teaches AI agents how to analyze trading opportunities using the thinking approach of the original Chan theory texts. Use this skill when analyzing stock buy and sell points, overall market conditions, formulating trading strategies, or conducting market judgment. Applies to: (1) stock buy and sell point analysis (2) market trend judgment (3) trading psychology analysis (4) operating strategy formulation (5) risk control thinking
Query documented public database APIs with explicit endpoints, filters, pagination, and provenance. Use when a scientific, regulatory, financial, or other database-backed fact must be retrieved reproducibly from a named source rather than inferred from general knowledge.
A consumer-oriented dating and matchmaking dashboard: left-side navigation, community-signal ticker, headline KPIs, a 30-day mutual-matches bar chart, and a match-rate trend block. Editorial typography with restrained accents. Use when the brief asks for a “dating site,” “matchmaking,” “community dashboard,” “social network dashboard,” or any consumer product where the data tells the story.
ALWAYS use when touching ANY DayZ file (.c, config.cpp, mod.cpp, .layout, types.xml) or discussing DayZ modding, Enforce Script, or the Enfusion engine. Activate even if the user does not explicitly mention DayZ — if the code imports DayZ classes (PlayerBase, EntityAI, ItemBase, MissionServer), uses DayZ APIs (GetGame(), Class.CastTo(), ScriptRPC), or references DayZ patterns (modded class, CfgPatches, requiredAddons), this skill MUST be loaded. Covers 40+ critical gotchas, complete engine API across 20+ systems, mod architecture, RPC networking, GUI widgets, performance optimization, and professional patterns from COT, VPP, and Expansion mods. Without this skill, the agent WILL produce broken Enforce Script code.
Audit dependency vulnerabilities, version health and license facts for Node.js, Python, Go, Rust, JVM and Ruby projects; use when the user asks to check package.json, lockfiles, requirements, go.mod, Cargo.toml, pom.xml or Gemfile.lock, or to generate an audit report that does not change dependencies
Safe systematic dependency upgrade with vulnerability scanning and rollback capability. Detects project ecosystem, audits outdated and vulnerable packages, presents a prioritized upgrade plan, and executes upgrades one at a time with test verification after each. Use when updating dependencies, fixing vulnerability alerts, or performing periodic dependency maintenance.
Parse a structured design brief written in I-Lang protocol format into a concrete design spec. Eliminates ambiguity from vague requests like "make it professional" by requiring explicit dimensions: palette, typography, layout, mood, density, and constraints. Trigger keywords: "design brief", "create a design brief", "ilang brief", "structured brief".
DICOM and NIfTI medical image processing pipeline. Triggers on DICOM, NIfTI, dcm2niix, de-identification, pydicom, DICOM header, conversion, anonymization, BIDS, DICOM tags, medical image format conversion, "DICOM to NIfTI", "burned-in PHI", "SeriesInstanceUID", "nibabel", "DICOM anonymization".
Analyze a set of design samples (HTML mockups + website URLs) and produce a structured style guide that anchors the rest of the stardust redesign pipeline. Use when the user supplies reference designs ("design samples", "mockups", "inspiration sites", "style references") and wants to extract a consistent visual language — type system, color palette, spacing, motion, and reusable component patterns — before redesigning a target site. Triggers on phrases like "distill these samples", "extract a style guide from these examples", "use these as design references", or "analyze these mockups". Outputs a `trait-matrix.json` (structured per-sample + cross-sample design tokens) and a `SAMPLES.md` narrative brief that `stardust:direct` reads under Mode B (anchor-reference precedence) when picking a redesign direction.
Implements feature tasks by loading the project skills relevant to the task, reading PRD/TechSpec context, analyzing dependencies, executing the implementation with tests, and performing an automatic code review. Marks tasks as complete in tasks.md. Use when the user asks to implement a task, execute a task, or start working on a specific task number. Do not use for creating tasks, running QA, or bug fixing.
Guide users through a structured workflow for co-authoring documentation. Use when user wants to write documentation, proposals, technical specs, decision docs, or similar structured content. This workflow helps users efficiently transfer context, refine content through iteration, and verify the doc works for readers. Trigger when user mentions writing docs, creating proposals, drafting specs, or similar documentation tasks.
Comprehensive document creation, editing, and analysis with support for tracked changes, comments, formatting preservation, and text extraction. When Claude needs to work with professional documents (.docx files) for: (1) Creating new documents, (2) Modifying or editing content, (3) Working with tracked changes, (4) Adding comments, or any other document tasks
Build React TypeScript web applications using Docyrus as a backend. Use when creating or modifying apps that authenticate with Docyrus OAuth2, fetch/mutate data via the @docyrus/api-client library, use auto-generated collections for CRUD operations, or build queries with filters, aggregations, formulas, pivots, and child queries against Docyrus data sources. Triggers on tasks involving @docyrus/api-client, @docyrus/signin, Docyrus collections, data source queries, or Docyrus-backed React app development.
OpenHarmony soft bus code security review expert - comprehensively checks C/C++ code against secure coding and logging standards. Covers 40+ security rules, including pointer safety, memory management, lock management, and sensitive information protection. Provides cross-file call analysis and control flow analysis, and generates detailed code review reports. Triggered only when user input contains "软总线安全卫士". Important: this skill is a read-only review tool and does not modify source files.
Analyze recent post-earnings stocks using a 5-factor scoring system (Gap Size, Pre-Earnings Trend, Volume Trend, MA200 Position, MA50 Position). Scores each stock 0-100 and assigns A/B/C/D grades. Use when user asks about earnings trade analysis, post-earnings momentum screening, earnings gap scoring, or finding best recent earnings reactions.
Apply basic game theory concepts including Nash equilibrium, dominant strategies, and the Prisoner's Dilemma to analyze strategic interactions. Use this skill when the user needs to model competitive decisions, predict rival behavior, design incentive mechanisms, or evaluate cooperation vs competition scenarios — even if they say 'what will our competitor do', 'should we cooperate or compete', or 'how do we set up the right incentives'.
Intelligent inbox triage that connects to Gmail or Outlook, scores emails by importance (0-100) using sender recognition, urgency keywords, thread depth, time sensitivity, and business relevance, categorizes into Urgent/Important/Routine/Archive, and generates reply suggestions for top priority items. Use when the user wants to check email, review inbox, triage messages, see what's urgent, or get reply suggestions. Triggers on check email, inbox triage, what's important, email summary, unread emails, priority inbox.
Skill for extracting and writing content in multiple Excel formats, using the calamine library to handle .xls, .xlsx, .xlsm and other formats. Use this skill whenever the user needs to parse Excel files, extract tabular data, convert Excel to text format, analyze Excel content, batch-process Excel files, create new Excel files, or update existing Excel files. Applies to scenarios such as data extraction, report analysis, content review, and data export.
Produce a rich, interactive, self-contained HTML explanation of a diff, branch, or pull request, with Background, Intuition, Code walkthrough, and a Quiz, written as one dated file to a code-explanations folder in the user's home directory, outside the repo. Triggers on "explain this diff", "walk me through this branch", "explain PR 1234". Not for reviewing changes and not for explaining a standalone issue ticket.
Exploits Kerberos Constrained Delegation misconfigurations in Active Directory using Impacket's findDelegation.py and getST.py (or Rubeus/Kekeo on Windows) to abuse S4U2Self and S4U2Proxy and impersonate privileged users. Use during authorized Active Directory penetration tests or red-team engagements for lateral movement and privilege escalation after finding an account trusted for constrained delegation.
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.