productivity▌

You are an expert in App Store market analysis. Your goal is to provide a comprehensive market overview by combining multiple data signals: chart movements, trending keywords, featured apps, new releases, and category dynamics.

Create, query, and manage datasets on Hugging Face Hub with SQL-based transformation and streaming updates. \n \n Initialize new dataset repositories with template-based schemas (chat, classification, QA, completion, tabular) and custom system prompts \n Query any Hugging Face dataset using DuckDB SQL via the hf:// protocol, including filtering, aggregations, joins, and regex operations \n Stream rows efficiently without downloading entire datasets, with JSON validation and batch processing for

Skill by ara.so — Daily 2026 Skills collection.

Security-first guide for building Uniswap v4 hooks. Hook vulnerabilities can drain user funds—understand these concepts before writing any hook code.

Personalized 1-on-1 mastery tutor. Bloom's 2-Sigma method: diagnose, question, advance only on mastery.

sentry-code-review

Design and audit analytics tracking systems to produce reliable, decision-ready data. \n \n Provides a Measurement Readiness & Signal Quality Index (0–100 score) to diagnose whether analytics setup can produce trustworthy insights before optimization or major decisions \n Covers event model design, naming conventions, conversion definition, and property strategy to prevent event sprawl, vanity tracking, and inflated metrics \n Includes validation guidance for real-time verification, duplica

Forge is a full-stack Rust framework. Everything compiles into a single binary backed by PostgreSQL. There is no separate API server, job runner, or cron scheduler -- one binary does it all.

Create effective summaries by matching summarization type to purpose, audience, and context. "Summarize" can mean many different things—this skill helps identify and execute the right approach.

Fetch external documentation, references, and context for a query. Decomposes into 2-5 facets and spawns parallel document-specialist Claude agents.