jq

What problem does it solve?

This Skill eliminates the need for cumbersome scripting or complex regex to process JSON data. It provides jq, a lightweight and powerful command-line JSON processor, allowing you to quickly filter, transform, and analyze JSON with simple, composable commands.

Core Features & Use Cases

• JSON Formatting & Selection: Pretty-print JSON, select specific fields (nested or array elements), and create new objects from existing data.
• Array Operations & Aggregations: Map, filter, sort, group, and aggregate values (sum, average, min/max) within JSON arrays.
• Data Transformation: Add, update, rename, or delete fields, and apply conditional logic to modify JSON structures.
• Use Case: Take a complex JSON API response containing an array of user objects. Use jq to extract only the id, name, and email fields from active users, and output the result as a clean, readable JSON array, ready for further processing.

Quick Start

Pretty-print the contents of 'data.json' and then extract the 'user.email' field.