Show HN: Rudder – Red-Green TDD Workflow for Verifiably Comprehensive Specs (github.com)

Rudder is a new plugin for Claude Code and Codex that enhances Test-Driven Development (TDD) by creating verifiably comprehensive specifications from coding sessions and existing specs. This tool aims to eliminate the ambiguity in coding by retrospectively generating specifications based on user prompt history, asking targeted questions to ensure the resulting spec is thorough enough to avoid guesswork. It converts test coverage data into a measure of spec completeness, enabling developers to feel confident that their specifications truly reflect their needs. The significance of Rudder lies in its ability to integrate seamlessly into existing development workflows, offering multi-agent support and compatibility with popular coding agents. By utilizing a local SQLite database for privacy, Rudder protects user data while supporting Node.js environments. With easy installation and setup, developers can quickly leverage this tool to enhance both the quality of their code and the efficiency of their development process, making it a noteworthy advancement in the AI-driven coding landscape.