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420 skills match “data cleaning”
Flexible Database Design
Guide agents and users to design and implement a "flexible database" on SQLite that can handle semi-structured, multi-source data. Typical scenarios: personal knowledge base, PDF/report archive, policy tracking, fragmented notes, custom form/questionnaire fields, multi-source data aggregation, event logging. When the user says things like "I want to build a knowledge base", "archive PDF reports", "search within report content", "collect policies or scattered information", this skill provides the end-to-end workflow. It includes: design principles, a three-layer model, agent workflows, schema templates, and reference Python scripts.
Example: if user wants Stripe data
Configure custom recurring reports. User defines data sources, skill handles scheduling and formatting.
Get Withings weight data (assuming withings-family skill is installed)
Generate WHO child growth charts (height, weight, BMI) with percentile curves. Downloads official WHO reference data on demand. Use when users ask about child growth tracking, percentiles, or want growth charts for their kids.
Claude Coach: Endurance Training Plan Skill
Create personalized triathlon, marathon, and ultra-endurance training plans. Use when athletes ask for training plans, workout schedules, race preparation, or coaching advice. Can sync with Strava to analyze training history, or work from manually provided fitness data. Generates periodized plans with sport-specific workouts, zones, and race-day strategies.
Data quality & reconciliation with exception reporting and no silent failure
Reconciles data sources using stable identifiers (Pay Number, driving licence, driver card, and driver qualification card numbers), producing exception reports and “no silent failure” checks. Use when you need weekly matching with explicit reasons for non-joins and mismatches.
Prospecting
When the user wants to find, qualify, and build a list of prospects to reach out to, across B2B SaaS, general B2B, or local small businesses. Also use when the user mentions "prospecting," "build a prospect list," "find leads," "lead list," "outbound list," "target account list," "ICP-fit accounts," "find local businesses," "find my first customers," "design partners," "signal-based outbound," "buying signals," "intent data," "job change alerts," "waterfall enrichment," "Clay table," "lookalike accounts," "catch-all emails," "account tiering," or "research this account before I reach out." Always verify emails before they reach a sequence, and never scrape LinkedIn. Define audiences in Sales Navigator and pull contacts from licensed data. Covers list building, signals, enrichment, verification, and account research. For the outreach itself (copy, sending setup, LinkedIn, cadences, replies), see cold-email. For researching competitors, see competitor-profiling.
Go Development and Debugging
Writes, debugs, and reviews Go: goroutine leaks, data races, nil interfaces, slices and maps, go.mod, and net/http. Use when Go panics or misbehaves — "all goroutines are asleep - deadlock!", "concurrent map writes", "send on closed channel", "assignment to entry in nil map", or a WARNING: DATA RACE from `go test -race`; when a goroutine, timer, or connection leaks and memory climbs; when a service hangs for want of a timeout; when errors.Is or errors.As stops matching after a %v wrap; when a slice mutates its parent, a map iterates in a new order, or a typed nil returned as error compares non-nil; when go.mod, go.sum, workspaces, replace, or a /v2 path fight over dependencies; when cross-compiling, cgo, build tags, go:embed, or a static container binary fail; when tests are flaky under -race or -parallel or benchmarks lie; when GOGC, GOMEMLIMIT, GOMAXPROCS, or escape analysis need tuning; or when writing handlers, CLIs, database access, or generics. Not for Kubernetes operators or framework internals.
Yahoo Finance CLI
This skill should be used when the user asks to "get stock prices", "check stock quotes", "look up earnings", "get financial data", "find trending stocks", or needs stock market data from Yahoo Finance.
Cron Backup
Set up scheduled automated backups with version tracking and cleanup. Use when users need to (1) Schedule periodic backups of directories or files, (2) Monitor version changes and backup on updates, (3) Automatically clean up old backups to save space, (4) Create backup strategies for configuration files, code repositories, or user data.
Avue Crud
Provides comprehensive guidance for Avue CRUD component including table operations, form handling, and data management. Use when the user asks about Avue CRUD, needs to implement table CRUD operations, or build data management interfaces.
Finnhub API
Access Finnhub API for real-time stock quotes, company news, market data, financial statements, and trading signals. Use when you need current stock prices, company news, earnings data, or market analysis.
Solar Weather
Monitor solar weather conditions including geomagnetic storms, solar flares, aurora forecasts, and solar wind data. Uses NOAA Space Weather Prediction Center real-time data.
Lime Echart
Provides comprehensive guidance for Lime ECharts including chart creation, configuration, data visualization, and interactive charts. Use when the user asks about Lime ECharts, needs to create charts, visualize data, or work with ECharts features.
Quodd Stock Quotes
Fetch real-time stock quotes via Quodd API. Get current prices, daily high/low, and after-hours data for US equities. Use when the user asks for stock prices, quotes, market data, or ticker information.
Garmin Connect
Syncs daily health and fitness data from Garmin Connect into markdown files. Provides sleep, activity, heart rate, stress, body battery, HRV, SpO2, and weight data.
CZ CELLxGENE Census
Query the CELLxGENE Census (61M+ cells) programmatically. Use when you need expression data across tissues, diseases, or cell types from the largest curated single-cell atlas. Best for population-scale queries, reference atlas comparisons. For analyzing your own data use scanpy or scvi-tools.
Smart Web Scraper
Extract structured data from any web page. Supports CSS selectors, auto-detection of tables and lists, JSON/CSV output formats. Use when asked to scrape a website, extract data from a page, pull product info, gather contact details, or collect listings from a URL.
Stock Strategy Backtester
Backtest stock trading strategies on historical OHLCV data and report win rate, return, CAGR, drawdown, Sharpe ratio, and trade logs. Use when evaluating or comparing strategy rules (SMA crossover, RSI mean reversion, breakout), quantifying transaction-cost impact, tuning parameters, or generating performance summaries from CSV data. Trigger for requests like "回测股票策略胜率", "测收益率", "compare two strategy backtests", and "build a strategy report from historical prices".
Odoo Financial Intelligence
Query Odoo data including salesperson performance, customer analytics, orders, invoices, CRM, accounting, VAT, inventory, and AR/AP. Generates WhatsApp cards, PDFs, Excel. Use when user explicitly mentions Odoo or asks for Odoo data.
Stock Prices API Skill
Query real-time stock prices and market data using the Stock Prices API. Responses are in TOON format—decode with @toon-format/toon. Use when fetching stock quotes, analyzing market data, or working with symbols like AAPL, NVDA, GOOGL, or any ticker symbols.
Polars
Fast in-memory DataFrame library for datasets that fit in RAM. Use when pandas is too slow but data still fits in memory. Lazy evaluation, parallel execution, Apache Arrow backend. Best for 1-100GB datasets, ETL pipelines, faster pandas replacement. For larger-than-RAM data use dask or vaex.
Excel Studio
Professional Excel spreadsheet generator. Use when user needs to create data tables, reports, charts, financial models, or any structured data in Excel format. Supports .xlsx, .xls, .csv formats with multi-language, charts, formulas, and formatting. Excel电子表格生成、数据分析、财务报表。
GA4 Analytics Toolkit
Google Analytics 4, Search Console, and Indexing API toolkit. Analyze website traffic, page performance, user demographics, real-time visitors, search queries, and SEO metrics. Use when the user asks to: check site traffic, analyze page views, see traffic sources, view user demographics, get real-time visitor data, check search console queries, analyze SEO performance, request URL re-indexing, inspect index status, compare date ranges, check bounce rates, view conversion data, or get e-commerce revenue. Requires a Google Cloud service account with GA4 and Search Console access.
Universal Web Scraper
Universal AI-powered web scraper for any platform. Scrape data from Instagram, Facebook, TikTok, YouTube, Google Maps, Google Search, Google Trends, Booking.com, and TripAdvisor. Use for lead generation, brand monitoring, competitor analysis, influencer discovery, trend research, content analytics, audience analysis, or any data extraction task.