Communicating data insights visually requires choosing the right chart type and mastering multiple libraries. This skill guides you through creating professional visualizations using matplotlib, seaborn, plotly, and altair.

Writing efficient SQL queries requires knowing common patterns and anti-patterns. This skill provides ready-to-use examples for CTEs, window functions, joins, and indexing strategies.

Writing database code is complex and error-prone. This skill provides battle-tested SQLAlchemy 2.0 patterns for models, queries, async sessions, transactions, and migrations.

Developers need to extract, filter, and transform data from configuration files and API responses. This skill provides ready-to-use patterns for jq and yq so you can quickly query and modify structured data without memorizing syntax.