Processing
Data transformation and parsing
engineering
by markdown-viewer
Create professional engineering diagrams using drawio XML format with industry-standard symbols. Best for electrical schematics, P&ID (Piping & Instrumentation), rack diagrams, fault tree analysis, PLC ladder logic, and logic gate diagrams. Built on drawio with engineering-specific stencils. NOT for simple flowcharts (use mermaid) or network topology (use network skill).
xlsx
by evolving-machines-lab
"Comprehensive spreadsheet creation, editing, and analysis with support for formulas, formatting, data analysis, and visualization. When Claude needs to work with spreadsheets (.xlsx, .xlsm, .csv, .tsv, etc) for: (1) Creating new spreadsheets with formulas and formatting, (2) Reading or analyzing data, (3) Modify existing spreadsheets while preserving formulas, (4) Data analysis and visualization in spreadsheets, or (5) Recalculating formulas"
mcp-builder
by Prat011
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).
crm-client-lifecycle
by JoelLewis
"Client lifecycle management for RIAs: segmentation models (AUM, revenue, behavioral, strategic importance), household management, multi-generational relationship tracking, service tier SLAs, quarterly/annual review scheduling, lifecycle tracking (prospect→onboarding→accumulation→distribution→estate), engagement analytics (NPS, contact frequency, retention risk scoring), at-risk identification, wallet share, held-away asset consolidation, referral attribution, FINRA Rule 4512 trusted contact, OFAC/enhanced due diligence, CRM platforms (Salesforce, Redtail, Wealthbox, Dynamics)."
opensea
by ProjectOpenSea
Query NFT data, trade on the Seaport marketplace, and swap ERC20 tokens across Ethereum, Base, Arbitrum, Optimism, Polygon, and more.
index-at-creation
by parcadei
Index at Creation Time
wespy-fetcher
by wlzh
获取并转换微信公众号/网页文章为 Markdown 的封装 Skill，完整支持 WeSpy 的单篇抓取、微信专辑批量下载、专辑列表获取、HTML/JSON/Markdown 多格式输出。Use when user asks to 抓取微信公众号文章、公众号专辑批量下载、URL 转 Markdown、保存微信文章、mp.weixin.qq.com to markdown.
data-quality-audit
by nimrodfisher
Comprehensive data quality assessment against defined business rules and constraints. Use when validating data against expected schemas, checking referential integrity across tables, or auditing data pipeline outputs before production use.
critic
by mcouthon
"Challenge assumptions and probe reasoning using adversarial thinking. Use when asked to find weaknesses, challenge a design, identify edge cases, or stress-test an approach. Triggers on: 'use critic mode', 'challenge this', 'find weaknesses', 'what could go wrong', 'critic', 'devil's advocate', 'poke holes', 'stress test', 'what am I missing', '5 whys'. Read-only mode - questions and probes but doesn't provide solutions."
critic
by mcouthon
"Challenge assumptions and probe reasoning using adversarial thinking. Use when asked to find weaknesses, challenge a design, identify edge cases, or stress-test an approach. Triggers on: 'use critic mode', 'challenge this', 'find weaknesses', 'what could go wrong', 'critic', 'devil's advocate', 'poke holes', 'stress test', 'what am I missing', '5 whys'. Read-only mode - questions and probes but doesn't provide solutions."
design
by mcouthon
"Use when building dashboards, SaaS UIs, admin interfaces, or any interface needing polished professional design. Covers design direction, craft principles, and 9-phase implementation. Triggers on: 'use design mode', 'design system', 'design system upgrade'. Full access mode."
abstract-invariant-generator
by ArabelaTso
Uses abstract interpretation to automatically infer loop invariants, function preconditions, and postconditions for formal verification. Generates invariants that capture program behavior and support correctness proofs in Dafny, Isabelle, Coq, and other verification systems. Use when adding formal specifications to code, generating verification conditions, inferring contracts for functions, or discovering loop invariants for proofs.
claude-settings-audit
by getsentry
Analyze a repository to generate recommended Claude Code settings.json permissions. Use when setting up a new project, auditing existing settings, or determining which read-only bash commands to allow. Detects tech stack, build tools, and monorepo structure.
types-check
by tidyverse
Validate function inputs in R using a standalone file of check_* functions. Use when writing exported R functions that need input validation, reviewing existing validation code, or when creating new input validation helpers.
sleap-support
by talmolab
Handle SLEAP GitHub support workflow for issues and discussions. Use when the user says "support", provides a GitHub issue/discussion number like "#2512", or asks to investigate a user report from talmolab/sleap. Scaffolds investigation folders, downloads posts with images, analyzes problems, and drafts friendly responses.
visual-explainer
by nicobailon
Generate beautiful, self-contained HTML pages that visually explain systems, code changes, plans, and data. Use when the user asks for a diagram, architecture overview, diff review, plan review, project recap, comparison table, or any visual explanation of technical concepts. Also use proactively when you are about to render a complex ASCII table (4+ rows or 3+ columns) — present it as a styled HTML page instead.
reddit-ads
by alinaqi
Reddit Ads API - campaigns, targeting, conversions, agentic optimization
shopify-apps
by alinaqi
Shopify app development - Remix, Admin API, checkout extensions
klaviyo
by alinaqi
Klaviyo email/SMS marketing - profiles, events, flows, segmentation
flutter
by alinaqi
Flutter development with Riverpod state management, Freezed, go_router, and mocktail testing
medusa
by alinaqi
Medusa headless commerce - modules, workflows, API routes, admin UI
firebase
by alinaqi
Firebase Firestore, Auth, Storage, real-time listeners, security rules
esg-benchmark-comparison
by OctagonAI
Retrieve ESG benchmark comparison metrics by sector using Octagon MCP. Use when comparing ESG performance across industries, analyzing sector-level sustainability benchmarks, identifying ESG leaders and laggards by industry, or referencing frameworks like MSCI, S&P Global, CDP, and CSRD.
invoice-scanner
by wlzh
扫描目录识别所有类型发票（交通、住宿、餐饮等），提取关键信息并生成分类统计报告