Data Science

Present behavioral/kinematic data so an expert can immediately see dynamics, variability, and structure. Use this skill instead of default bar plots when designing figures, notebooks, or analysis scripts.

Guide for contributing to the Nim language repository (~/Development/Nim). Applies to ALL work in that directory. Proactively monitors branch size, analyzes commits for split potential, formats PRs for fast merging. Triggers: working in ~/Development/Nim, committing, creating PRs, asking about submission readiness, or when branch exceeds size thresholds. Based on analysis of 154 merged PRs by core maintainers.

Analyzes your recent Claude Code chat history to identify coding patterns, development gaps, and areas for improvement, curates relevant learning resources from HackerNews, and automatically sends a personalized growth report to your Slack DMs.

Interactive prompt builder for creating high-quality deep research prompts through adaptive interviewing. Use when users need to transform a basic research topic into a comprehensive, well-structured research prompt optimized for deep analysis. Helps build research prompts from vague ideas, enhance existing questions with best practices, and create structured prompts for any domain including product comparisons, technical documentation, academic literature, and market analysis.

Expert in Chrome browser automation, debugging, and performance analysis using Chrome DevTools MCP. Use when browser automation, performance testing, web scraping, debugging, or browser interaction is needed. **CRITICAL:** Always uses persistent data-dir at ~/.claude/credentials/chrome for session management. (project, gitignored)

This skill should be used when creating a new .md file, completing an analysis or audit, deciding whether to archive or delete docs, or when uncertain if something should be documented. Covers document types, naming conventions, the "Link Test", and when to extract patterns to skills.

Use this when user requests architectural analysis, migration planning, or technical debt assessment. Provides 6-layer framework: system structure, domain model, design patterns, technical debt, modernization strategy, and DDD analysis. Apply when user asks for architecture review, refactoring strategy, or system modernization roadmap

Comprehensive tech stack detection, framework identification, dependency analysis, and project.json generation. Use when analyzing project structure, detecting frameworks, identifying dependencies, discovering AI stack components, detecting databases, or when user mentions project detection, tech stack analysis, framework discovery, or project.json generation.

Comprehensive software architecture skill for designing scalable, maintainable systems using ReactJS, NextJS, NodeJS, Express, React Native, Swift, Kotlin, Flutter, Postgres, GraphQL, Go, Python. Includes architecture diagram generation, system design patterns, tech stack decision frameworks, and dependency analysis. Use when designing system architecture, making technical decisions, creating architecture diagrams, evaluating trade-offs, or defining integration patterns.

Use this skill to read ChatTwo chat logs as a debug console. Covers querying the SQLite database, finding script runs, and extracting debug evidence for bug analysis.

Conduct sensitivity analyses to test robustness of findings. Use when: (1) Testing assumption violations, (2) Meta-analysis robustness, (3) Handling missing data, (4) Examining outliers.

Specialized agent for deep argument analysis. Maps claims, identifies logical gaps, generates counterarguments, suggests evidence needs. Use when user asks to "strengthen arguments", "check logic", "improve reasoning", or explicitly invokes the argument strengthener agent.

Set up GPU sandboxes for interpretability research. Use when writing setup.py scripts with Sandbox, SandboxConfig, ModelConfig, or create_notebook_session. Provides the exact API for Modal GPU environments - MUST read before writing any sandbox setup code.

Expert assistance with GraphPad Prism scientific graphing and statistics software, specializing in Prism scripting for automation, batch processing, and data analysis workflows.

Build immersive 3D web experiences with Three.js - WebGL/WebGPU library for scenes, cameras, geometries, materials, lights, animations, loaders, post-processing, shaders (including node-based TSL), compute, physics, VR/XR, and advanced rendering. Use when creating 3D visualizations, games, interactive graphics, data viz, product configurators, architectural walkthroughs, or WebGL/WebGPU applications. Covers OrbitControls, GLTF/FBX loading, PBR materials, shadow mapping, post-processing effects (bloom, SSAO, SSR), custom shaders, instancing, LOD, animation systems, and WebXR.

Use LangSmith trace analysis to implement targeted improvements to AI agents

🔄 PHP-QA-CI TOOL ORCHESTRATOR - Automatic run→fix→run cycling for php-qa-ci tools.**ONLY for php-qa-ci pipeline tools** (./bin/qa -t toolname)NOT for ad-hoc tool execution outside php-qa-ci.Use when user requests QA tools via php-qa-ci:- "run phpstan", "use stan skills"- "run tests", "run phpunit"- "run rector", "run cs fixer"- "run allStatic", "run allCS"**CRITICAL**: MUST cycle automatically until tool reports clean OR escalation needed.DO NOT stop after one fix to ask "what next?" - KEEP CYCLING.Supports all php-qa-ci tools via ./bin/qa -t {toolname}:- phpstan (static analysis) - has fixer agent- phpunit (tests) - has fixer agent- rector (refactoring) - self-fixing, re-run until clean- fixer (code style) - self-fixing, re-run until clean- infection (mutation testing) - no auto-fix- allStatic/allCs/allTests - meta groupsAutomatically detects which tools have fixers and invokes them.**PERFORMS PREFLIGHT CHECK**: Invokes docs-conflict-checker agent to ensureproject documentation doesn

Balance escape room difficulty, timing, and hint systems to achieve 60-70% completion rate. Designs progressive difficulty curves, three-tier hint systems, stuck-point analysis, and playtest metrics. Use when balancing game difficulty, designing hint systems, analyzing playtest data, or optimizing escape room completion rates.

Interactive maps and geospatial visualizations for Composable Svelte. Use when implementing maps, geolocation, markers, overlays, or geospatial data visualization. Covers Map component, markers, popups, GeoJSON layers, heatmaps, tile providers, viewport controls from @composable-svelte/maps package built with Maplibre GL.

Visual content system with Tron-meets-Excalidraw aesthetic.Dark backgrounds, neon accents, hand-drawn sketch style.USE WHEN user wants to create visual content, illustrations, diagrams,mermaid charts, flowcharts, technical diagrams, or infographics.Includes "create a diagram", "visualize this", "draw architecture","make a chart", "do visualization", "simple diagram", "detailed chart".