D365 Developer Toolbox is a productivity extension designed specifically for developers working with Dynamics 365. Available as a free add-on for Chrome, it enhances the development experience by providing a suite of 24 built-in tools that can be accessed through an intuitive side panel on any Dynamics 365 form. This tool supports both the Unified Client Interface (UCI) and Classic views, making it versatile for various environments, whether online or on-premise.

Key features of the D365 Developer Toolbox include the ability to inspect and debug Business Process Flows, locate fields quickly, and view form properties and event handlers. Additional functionalities like Metadata Explorer, Security Roles & Privileges checking, and a Query Builder for executing Web API queries contribute to a streamlined development process. It also offers JSON export capabilities and navigation links to common admin pages, making it an essential tool for any Dynamics 365 developer.