The Oracle CPQ Developer Toolkit is a tool for managing CPQ technical artifacts, primarily Business Modeling Language (BML) code. It combines a Command Line Interface (CLI) and REST APIs, enabling developers to interact with their CPQ site, manage BML libraries locally using source control, and automate deployment processes. Key features include pulling and pushing BML libraries, running unit tests (BMLTs) for validation, and managing packages and migrations via CLI commands. The toolkit is designed to improve efficiency in BML development, testing, and deployment across various CPQ environments, particularly by integrating with source control systems for collaborative development and conflict management.