The Data Fetcher plugin enables Obsidian users to retrieve and display live data from external sources directly within their notes. It supports various data formats including REST APIs, GraphQL, and RPC-based endpoints, offering flexibility in how data is queried and presented. Users can either write custom queries inline within notes or configure reusable endpoints in the plugin settings. With built-in caching mechanisms, results can be stored and refreshed manually or automatically based on expiration settings, helping reduce redundant calls.