Claude Skills

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

Initialize the design doc backlog system in a project. Use when the user wants to: - Set up design docs for a project - Initialize the backlog system - Configure design doc workflow - Add design doc task management

This skill should be used when building AI features with Vercel AI SDK, using useChat, streamText, or generateObject, or when "AI SDK", "streaming chat", or "structured outputs" are mentioned.

This skill should be used when analyzing conversation patterns, identifying frustration or success signals, or when "analyze conversation", "what went wrong", or "patterns" are mentioned.

REDIRECT: Use cli-dev:cli-development-guidelines instead. CLI development skills live in the cli-dev plugin.

Declarative hyperparameter management for ML/AI experiments. Use when Claude needs to: (1) Create CLI applications with type-hinted parameters and auto-generated help (2) Configure ML training scripts with @proto.cli, @proto.prefix, or @proto decorators (3) Set up multi-namespace configurations with namespaced CLI arguments (4) Read configuration from environment variables using EnvVar (5) Create hyperparameter sweeps using piter or Sweep (6) Work with Union types for subcommand-like CLI patterns

Scan codebase for Outfitter Stack adoption candidates. Identifies throw statements, console usage, hardcoded paths, and custom errors. Use when assessing adoption scope or checking readiness.

Comprehensive Google Tag Manager guide covering container setup, tags, triggers, variables, data layer, debugging, custom templates, and API automation. Use when working with GTM implementation, configuration, optimisation, troubleshooting, or any GTM-related tasks.

Comprehensive Google Analytics 4 guide covering property setup, events, custom events, recommended events, custom dimensions, user tracking, audiences, reporting, BigQuery integration, gtag.js implementation, GTM integration, Measurement Protocol, DebugView, privacy compliance, and data management. Use when working with GA4 implementation, tracking, analysis, or any GA4-related tasks.

This skill should be used when profiling code, optimizing bottlenecks, benchmarking, or when "performance", "profiling", "optimization", or "--perf" are mentioned.

Write Tampermonkey userscripts for browser automation, page modification, and web enhancement. Use when: creating browser scripts, writing greasemonkey scripts, automating user interactions, injecting CSS or JavaScript into web pages, modifying website behaviour, building browser extensions, hiding unwanted page elements, adding form auto-fill, scraping website data, intercepting requests, detecting URL changes in SPAs, or storing persistent user preferences. Covers userscript headers (@match, @grant, @require), synchronous and async GM_* API functions, common patterns (DOM mutation, URL change detection, element waiting), security sandboxing, and cross-browser compatibility (Chrome, Firefox, Edge).

This skill should be used when the user asks to "create a stack", "submit stacked PRs", "gt submit", "gt create", "reorganize branches", "fix stack corruption", or mentions Graphite, stacked PRs, gt commands, or trunk-based development workflows.

This skill should be used when creating slash commands, writing command files, or when "/command", ".claude/commands", "$ARGUMENTS", or "create command" are mentioned.

Templates for creating handlers, CLI commands, MCP tools, and daemon services following Outfitter Stack conventions. Use when scaffolding new components, creating handlers, adding commands, or when "create handler", "new command", "add tool", "scaffold", "template", or "daemon service" are mentioned.

Audits code for Outfitter Stack compliance including Result types, error handling, logging patterns, and path safety. Use for pre-commit reviews, code quality checks, migration validation, or when "audit", "check compliance", "review stack", or "stack patterns" are mentioned.

This skill should be used when the user asks to "create a virtual branch", "assign file to branch", "work on multiple features simultaneously", "organize commits after coding", "use but commands", or mentions GitButler, virtual branches, parallel development without checkout, post-hoc commit organization, multi-agent concurrent development, or `--gitbutler`/`--but` flags.

This skill should be used when designing, implementing, or reviewing CLI tools, or when flags, subcommands, help text, exit codes, or `--cli-dev` are mentioned.

This skill should be used when diagnosing failures, investigating incidents, finding root causes, or when "root cause", "diagnosis", "investigate", or "--rca" are mentioned.

This skill should be used when building React components with TypeScript, typing hooks, handling events, or when React TypeScript, React 19, Server Components are mentioned. Covers type-safe patterns for React 18-19 including generic components, proper event typing, and TanStack Router integration.