Data & AI

Master Python asyncio, concurrent programming, and async/await patterns for high-performance FastAPI applications. Use when building async APIs, concurrent systems, or I/O-bound applications requiring non-blocking operations.

Nix environment patterns for Ellie's projects. Use when (1) a tool or command is not available on the system, or (2) setting up a new project that needs a development environment. Provides patterns for ad-hoc tool execution and flake-based devShells with direnv.

Guide for configuring, deploying, and troubleshooting Firebase App Hosting with Next.js and other frameworks. Use when setting up apphosting.yaml, debugging build/deploy errors, managing environment variables, configuring Cloud Run settings, or adapting projects for App Hosting production environment.

This skill should be used when Claude needs to create structured, educational summaries of YouTube videos. Use this skill when the user requests a video summary, content analysis, or learning-focused breakdown of YouTube content. The skill integrates youtube-video-info and youtube-transcript skills to gather video data and transcripts, then generates comprehensive summaries following a specific educational format with key topics, insights, data-based analysis, and exploratory questions.

Systematic analysis framework for articles, papers, and long-form content using 5 proven thinking models (McKinsey Communication Framework, Comprehensive Task Checklist, Critical Thinking, Inversion Thinking, Systems Thinking).

Maintain code quality using Biome linting, formatting, and git hooks. Use this when the user asks about linting errors, code formatting, Biome configuration, fixing code style issues, organizing imports, or ensuring code quality standards before commits.

Automatically runs project validation commands (linters, type checkers, tests) after file edits and blocks commits on any failure. Reads validation commands from CLAUDE.md or auto-detects from project type. Enforces strict quality gates to catch issues early. (project)

Weaviate vector database for semantic search, hybrid queries, and AI-native applications. Use for embeddings storage, similarity search, RAG pipelines, and multi-modal retrieval.

Train and fine-tune LLMs using HuggingFace TRL, Transformers, and cloud GPU infrastructure with SFT, DPO, GRPO methods

Executive leadership guidance for strategic decision-making, organizational development, and stakeholder management. Includes strategy analyzer, financial scenario modeling, board governance frameworks, and investor relations playbooks. Use when planning strategy, preparing board presentations, managing investors, developing organizational culture, making executive decisions, or when user mentions CEO, strategic planning, board meetings, investor updates, organizational leadership, or executive strategy.

Design system and token management. Use for managing design tokens, colors, typography, and maintaining design consistency.

Guide for creating new Claude Code skills following best practices. Use when the user asks to create a new skill, agent capability, or wants to extend Claude's autonomous functionality.

Multiagent AI system for scientific research assistance that automates research workflows from data analysis to publication. This skill should be used when generating research ideas from datasets, developing research methodologies, executing computational experiments, performing literature searches, or generating publication-ready papers in LaTeX format. Supports end-to-end research pipelines with customizable agent orchestration.

Google Sheets API via curl. Use this skill to read, write, and manage spreadsheet data programmatically.

Guide parsing of Cassandra 5.0+ SSTable components (Data.db, Index.db, Statistics.db, Summary.db, TOC) with compression support (LZ4, Snappy, Deflate). Use when working with SSTable files, binary format parsing, hex dumps, compression issues, offset calculations, BTI index, partition layout, or debugging parsing errors.

Consult with a peer engineer for plan review, code review, implementation discussions, or problem-solving brainstorming. Use when you need a second opinion, want to validate your approach, or check for overlooked issues.

Defines system architecture and technical design decisions

Central coordinator for blog writing workflow with multi-agent execution. USE WHEN user says 'write a blog post', 'create blog content', 'start blog workflow', OR user wants to orchestrate the full blog writing pipeline.

Use this skill when the user wants to call different LLM models through OpenRouter's unified API, compare model responses, track costs and response times, or find the best model for a task. Triggers include requests to test models, benchmark performance, use specific providers (OpenAI, Anthropic, Google, etc.), or optimize for speed/cost.

Cargo.toml dependency management patterns for HASH workspace. Use when adding, updating, or removing dependencies, organizing Cargo.toml sections, configuring version pinning and default features, or managing public dependencies.