The author introduces codex-sdlc, an open-source plugin and repository framework designed to streamline the software development life cycle. This framework aims to replicate the human effort involved in feature requests beyond just coding. codex-sdlc organizes the process into distinct roles, including Project Manager, Business Analyst, Backend and Frontend developers, and Quality Control. It also offers an optional AI Product Owner role for advisory reviews. Users are responsible for clarifying requirements as needed and making the final acceptance decisions. A feature request initiates a workflow where the framework addresses ambiguities, coordinates API design, implementation, and quality checks. The process culminates in a report detailing changes, verification evidence, and limitations, allowing users to accept or request further work. To utilize codex-sdlc, users need Codex, Node.js, and an existing application repository. The setup involves installing the plugin and initializing the project by specifying code locations. Users are encouraged to start with a small feature to evaluate the workflow's effectiveness. The framework stores all requirements, tasks, decisions, and evidence within the project's .sdlc/ directory. It supports various models and includes presets for common technologies, with generic presets for other stacks. The author seeks feedback on the setup process, role handoffs, and the comprehensiveness of the delivery report.