Reflection SDD: Use a Reflection Harness to Level Up Your OpenSpec Workflow (www.dataleadsfuture.com)

A new reflection mechanism has been introduced to the OpenSpec workflow in OpenCode, significantly enhancing the quality of AI-generated code. This improvement comes after a month of rigorous testing, where the DeepSeek-V4-pro model performed comparably to Claude Opus 4.6. The key to this success lies in reintegrating a critical requirements review step, which ensures that proposal files generated by OpenSpec are thoroughly vetted before implementation, addressing a major source of common hidden bugs and messy code that emerges in automated coding processes. The reflection pattern involves adding a dedicated reflection agent that reviews the proposal files from a different angle using a separate language model. This agent identifies substantive defects that could lead to implementation failures, thereby preventing costly rework after coding begins. By focusing on the quality of the input and enforcing a structured proposal-first, code-second process, the reflection workflow enhances the robustness of AI-driven development, allowing for multiple review rounds until the proposals meet quality standards, and ultimately streamlining the coding phase while reducing errors.