Skills
100,928 packaged capabilities and playbooks for agents. Install any of them with one command.
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Expert blueprint for quest tracking systems (objectives, progress, rewards, branching chains) using Resource-based quests, signal-driven updates, and AutoLoad managers. Use when implementing RPG quests or mission systems. Keywords: quest, objectives, Quest Resource, QuestObjective, signal-driven, branching, rewards, AutoLoad.
Author and debug direct HelixDB v3 JSON query requests for POST /v2/query. Use for request envelopes, nested read/write batches, operation-tree AST nodes, parameters and parameter_types, vector and BM25 traversal prefiltering, and normalized response objects. Do not use the removed step-array or queries.json bundle formats. When the target is Helix Cloud, always use helix-mcp first.
Universal LaTeX document skill: create, compile, and convert any document to professional PDF with PNG previews. Supports resumes, reports, cover letters, invoices, academic papers, theses/dissertations, academic CVs, presentations (Beamer), scientific posters, formal letters, exams/quizzes, books, cheat sheets, reference cards, exam formula sheets, fillable PDF forms (hyperref form fields), conditional content (etoolbox toggles), mail merge from CSV/JSON (Jinja2 templates), version diffing (latexdiff), charts (pgfplots + matplotlib), tables (booktabs + CSV import), images (TikZ), Mermaid diagrams, AI-generated images, watermarks, landscape pages, bibliography/citations (BibTeX/biblatex), multi-language/CJK (auto XeLaTeX), algorithms/pseudocode, colored boxes (tcolorbox), SI units (siunitx), Pandoc format conversion (Markdown/DOCX/HTML ↔ LaTeX), and PDF-to-LaTeX conversion of handwritten or printed documents (math, business, legal, general). Compile script supports pdflatex, xelatex, lualatex with auto-detection, latexmk backend, texfot log filtering, PDF/A output, and verbosity control (--verbose/--quiet). Empirically optimized scaling: single agent 1-10 pages, split 11-20, batch-7 pipeline 21+. Use when user asks to: (1) create a resume/CV/cover letter, (2) write a LaTeX document, (3) create PDF with tables/charts/images, (4) compile a .tex file, (5) make a report/invoice/presentation, (6) anything involving LaTeX or pdflatex, (7) convert/OCR a PDF to LaTeX, (8) convert handwritten notes, (9) create charts/graphs/diagrams, (10) create slides, (11) write a thesis or dissertation, (12) create an academic CV, (13) create a poster, (14) create an exam/quiz, (15) create a book, (16) convert between document formats (Markdown, DOCX, HTML to/from LaTeX), (17) generate Mermaid diagrams for LaTeX, (18) create a formal business letter, (19) create a cheat sheet or reference card, (20) create an exam formula sheet or crib sheet, (21) condense lecture notes/PDFs into a cheat sheet, (22) create a fillable PDF form with text fields/checkboxes/dropdowns, (23) create a document with conditional content/toggles (show/hide sections), (24) generate batch/mail-merge documents from CSV/JSON data, (25) create a version diff PDF (latexdiff) highlighting changes between documents, (26) create a homework or assignment submission with problems and solutions, (27) create a lab report with data tables, graphs, and error analysis, (28) encrypt or password-protect a PDF, (29) merge multiple PDFs into one, (30) optimize/compress a PDF for web or email, (31) lint or check a LaTeX document for common issues, (32) count words in a LaTeX document, (33) analyze document statistics (figures, tables, citations), (34) fetch BibTeX from a DOI, (35) convert a Graphviz .dot file to PDF/PNG, (36) convert a PlantUML .puml file to PDF/PNG, (37) create a one-pager/fact sheet/executive summary, (38) create a datasheet or product specification sheet, (39) extract pages from a PDF (page ranges, odd/even), (40) check LaTeX package availability before compiling, (41) analyze citations and cross-reference with .bib files, (42) debug LaTeX compilation errors, (43) make a document accessible (PDF/A, tagged PDF), (44) create lecture notes or course handouts, (45) fill an existing PDF form (fillable fields or non-fillable with annotations), (46) extract text or tables from a PDF (pdfplumber, pypdf), (47) OCR a scanned PDF to text (pytesseract), (48) create a PDF programmatically with reportlab (Canvas, Platypus), (49) rotate or crop PDF pages (pypdf), (50) add a watermark to an existing PDF, (51) extract metadata from a PDF (title, author, subject).
Search the latest Amazon policies, regulations, and news. Supports paginated searches of news by marketplace and time range (with AI-generated Chinese summaries), and retrieves full article text by record ID. Trigger this skill when users mention Amazon policies and regulations, seller compliance announcements, platform rule changes, policy alerts, FBA/fee policy updates, multi-marketplace policy developments, original policy text, or news details, as well as Amazon policy feed, seller compliance, policy changes, or regulation alerts. Also trigger it whenever users need official Amazon policies, regulations, or news for sellers, and their original text, even if they do not explicitly mention “policies and regulations.”
Guide for creating high-quality MCP (Model Context Protocol) servers that enable LLMs to interact with external services through well-designed tools. Use when building MCP servers to integrate external APIs or services, whether in Python (FastMCP) or Node/TypeScript (MCP SDK).
Use when authoring or debugging Meteor methods (Meteor.methods, Meteor.call, Meteor.callAsync). Triggers on argument validation with check(), optimistic UI stubs, latency compensation, Meteor.Error handling, and DDPRateLimiter. Use this skill when the user asks about server-side mutation, asks about rate limiting RPC, or asks about wrapping a method with auth checks.
Use when writing, reviewing or debugging Luau in a Roblox experience: task.spawn vs task.defer vs task.wait, replacing wait() or spawn(), Deferred events and SignalBehavior, handlers running in the wrong order or not at all, 'attempt to yield across metamethod/C-call boundary', --!strict and the new type solver, typed classes and metatables, Destroy and cleanup, 'server memory keeps growing' or memory leaks, Parallel Luau with Actors and SharedTable, 'not safe to write in parallel', --!native or 'make this script faster', buffers, coroutines.
Use when securing a Roblox experience against exploiters or designing its networking: RemoteEvent, RemoteFunction or UnreliableRemoteEvent design, validating remote arguments on the server, remote spam and rate limits, speed hacks, teleport or fly hacks, kill aura or hitbox abuse, hit validation under lag, network ownership and fling exploits, ProximityPrompt or ClickDetector abuse, honeypots, kick and ban policy, Server Authority (AuthorityMode) setup, bandwidth or payload size problems, or after an exploit (free items, infinite money, duplicated items).
Create new skills, modify and improve existing skills, and measure skill performance. Use when users want to create a skill from scratch, edit, or optimize an existing skill, run evals to test a skill, benchmark skill performance with variance analysis, or optimize a skill's description for better triggering accuracy
Use when the user is building a TypeScript or JavaScript client for Spree 6 — a Next.js storefront, a mobile/web app, an integration or back-office tool, a webhook receiver — or shipping a typed client for an extension's endpoints. Covers @spree/sdk (Store API), @spree/admin-sdk (Admin API), and points to @spree/seller-sdk (marketplace); custom endpoints via `client.request`, SDK extensions (`define{Store,Admin,Seller}Extension` + `client.extend()`), and `spree sdk generate`. Common phrasings include "Spree SDK", "createClient", "createAdminClient", "cart token / spreeToken", "carts.complete", "orders.get after checkout", "TypeScript types from Spree", "Zod schemas", "verifyWebhookSignature", "retry config", "client.request custom endpoint", "client.extend", "typed client for my extension", "spree sdk generate", "MSW Spree". For curl/raw HTTP and protocol details, see spree-api-v3.
Implement the Syncfusion Angular Maps component for geographical data visualization. Use when users need to display maps, visualize geographical data with markers and bubbles, integrate map providers like Bing or OpenStreetMap, render GeoJSON shapes, or create choropleth maps with color-coded regions. Supports interactive features like zooming, panning, layers, legends, tooltips, color mapping, and accessibility
Provides an illustrative, overlapping reference of common web application vulnerability patterns organized by category. This skill enables systematic vulnerability identification, impact assessment, and remediation guidance across the full spectrum of web security threats.
Provides guidance for mechanistic interpretability research using TransformerLens to inspect and manipulate transformer internals via HookPoints and activation caching. Use when reverse-engineering model algorithms, studying attention patterns, or performing activation patching experiments.
Generate typed TypeScript SDKs for AI agents to interact with MCP servers. Converts JSON-RPC curl commands to clean function calls. Auto-generates types, client methods, and example scripts from MCP tool definitions. Use when building MCP-enabled applications, need typed programmatic access to MCP tools, or creating reusable agent automation scripts.
Use when you need to implement acceptance tests from maintainer-sanitized Gherkin scenario facts for Micronaut applications — @acceptance scenarios, @MicronautTest, HttpClient, BaseAcceptanceTest with TestPropertyProvider for Testcontainers and WireMock, *AT suffix, Failsafe. Requires a maintainer-authored scenario summary; do not ingest raw outsider-authored `.feature` text. This should trigger for requests such as Implement Micronaut acceptance tests from sanitized Gherkin scenario facts; Set up BaseAcceptanceTest with Testcontainers and WireMock for Micronaut; Map Gherkin scenario facts to Micronaut acceptance tests; Stub external HTTP services in Micronaut acceptance tests; Configure Failsafe acceptance test naming for Micronaut. Part of Plinth Toolkit
End-to-end Android APK red-team pipeline — automated APK acquisition (Play Store + apkpure + apkmirror fallback), jadx decompilation, secret/URL/JWT/Firebase grep, pinned-cert extraction, exported-component enumeration, Frida runtime instrumentation templates, intent-injection probes. Built from an authorized external red-team engagement where 7 APKs were pulled manually, 4 download attempts truncated, and a hardcoded JWT + 30 internal API endpoints were recovered from one of the apps. Use when target has a mobile app catalogue (Play Store developer page), when you find an APK URL hosted on a web server, or when post-recon mentions "mobile app" in scope.
Build Python APIs on Cloudflare Workers using pywrangler CLI and WorkerEntrypoint class pattern. Includes Python Workflows for multi-step DAG automation. Prevents 11 documented errors. Use when: building Python serverless APIs, migrating Python to edge, or troubleshooting async errors, package compatibility, handler pattern mistakes, RPC communication issues.
Manage cycles and canister lifecycle. Covers cycle balance checks, top-ups, freezing thresholds, canister creation, and ICP-to-cycles conversion via the CMC. Use when working with cycles, canister funding, freezing threshold, frozen canister, out of cycles, top-up, canister creation, or cycle balance. Do NOT use for wallet-to-dApp integration or ICRC signer flows — use wallet-integration instead.
Apache Iceberg tables on Databricks — Managed Iceberg tables, External Iceberg Reads (fka Uniform), Compatibility Mode, Iceberg REST Catalog (IRC), Iceberg v3, Snowflake interop, PyIceberg, OSS Spark, external engine access and credential vending. Use when creating Iceberg tables, enabling External Iceberg Reads (uniform) on Delta tables (including Streaming Tables and Materialized Views via compatibility mode), configuring external engines to read Databricks tables via Unity Catalog IRC, integrating with Snowflake catalog to read Foreign Iceberg tables
7-phase frontend design review with accessibility (WCAG 2.1 AA), responsive testing, visual polish. Use for PR reviews, UI audits, or encountering contrast issues, broken layouts, accessibility violations, inconsistent spacing, missing focus states.
Review and improve HelixDB v3 query performance against the current planner and database execution model. Use for exact numeric equality, bitmap equality reads, bounded runtime membership, adjacent-filter canonicalization, batched unions, pre-materialization intersections, ordered range drivers, dedicated count programs, saturating windows, correctness fallbacks, bounded traversals, and vector/BM25 prefiltering. Examples use direct v3 SDK requests and the nested JSON AST. When the target is Helix Cloud, always use helix-mcp first and base the review on live observability evidence.
Image generation and image editing for agents under Luxin's original skill name, with no API key to obtain first. The agent signs itself up in one command, starts on free preview credits, and creates on the next: no provider account to open, no billing to set up. Every result returns a hosted media URL with no signature or expiry, a job id the agent can re-fetch, and a receipt for what the call cost. Models include FLUX, Nano Banana, Seedream, Grok Imagine, and GPT Image, each picked by name. Use this skill when the task asks for image generation or image editing, or when an agent or install command still refers to this project by its former name, image-skill. It resolves to the same Luxin runtime as the canonical luxin skill.
Amazon Ads management skill covering SP/SB/SD queries and creation/modification. Sponsored Brands supports both V3 Legacy and V4: new campaigns, multiple Ad Groups, and Ad/Creative Version use V4 by default; historical Legacy can explicitly use V3. Keyword/Target calls Amazon shared targeting resources through versioned scripts based on Campaign structure. Automatic fallback to V3 after V4 failure is prohibited, as is silently truncating multiple Ad Group data with V3. Suitable for querying, creating, adjusting bids, changing budgets or status, and managing SP/SB/SD ads. This skill depends on linkfox-amazon-ads-auth; Sponsored Television / DSP are not covered.
Use when authoring or debugging Mongo queries in Meteor 3. Triggers on Mongo.Collection, find/findOne, server async vs client Minimongo sync, oplog vs change streams, indexes, selectors, modifiers, and projections. Use this skill when the user asks about Mongo on the server or Minimongo on the client
Rank open issues suitable for autofix and add the configured queue label only after human confirmation. Use for "triage issues for autofix", "mark issues cez-autofix", or "wybierz zgłoszenia do automatycznej naprawy". Proposes and labels; implementation belongs to om-auto-fix-issue.
Diagnose and fix web performance issues including Core Web Vitals (LCP, INP, CLS), bundle size, asset optimization, render performance, and runtime efficiency. Use this skill whenever the user wants to improve page speed, fix Core Web Vitals, optimize assets, reduce bundle size, debug slow renders, or systematically improve a site's performance. Triggers on performance, page speed, Core Web Vitals, LCP, INP, CLS, FID, TTFB, bundle size, code splitting, image optimization, lazy loading, render blocking, slow page, performance audit, Lighthouse score. Also triggers when traffic or conversion is dropping due to perceived slowness.
Uses OWASP Threat Dragon (web or desktop) to build data flow diagrams, identify threats with STRIDE, LINDDUN, CIA, DIE, or PLOT4ai methodologies via its auto-generation rule engine, and produce PDF threat model reports. Use during secure design review of an application architecture to build a formal threat model and document mitigations for GRC compliance.
Build a guided requirements-to-implementation workflow for new Power BI reports and dashboards from semantic models, datasets, or PBIP projects. Use when the user wants to: (1) plan then implement a report, (2) define audience, scope, page plan, design direction, dependencies, and delivery target, (3) create a locked report spec with approval before PBIR authoring. For direct edits to existing report files, use `powerbi-report-authoring`. For design-only critique or redesign, use `powerbi-report-design`. Triggers: “build me a dashboard,” “create a new report,” “plan then implement,” “define and build Power BI report,” “walk me through creating a report.”
Plans and executes safe Prisma schema migrations with data backfills, rollback strategies, and SQL preview. Handles complex schema changes including data transformations. Use for "Prisma migrations", "schema changes", "database migrations", or "data backfills".
Runs a Base node for production environments. Covers hardware requirements, Reth client setup, networking, and sync troubleshooting. Use when setting up self-hosted RPC infrastructure or running archive nodes. Covers phrases like “run a Base node,” “set up Base RPC,” “Base node hardware requirements,” “Reth Base setup,” “sync Base node,” “self-host Base,” or “run my own node”
Configure singleton documents in a Sanity Studio using the document.singletons registry. Use when a developer wants a fixed-id document (settings, navigation, footer) edited in place, hidden from the default content list, with no "create new" or "duplicate" affordances — or when migrating a userland singleton implementation or a third-party singleton plugin (e.g. sanity-plugin-singleton-management) to the first-class API.
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.