Show HN: Rudder – Red-Green TDD Workflow for Verifiably Comprehensive Specs

Rudder is a local plugin for Claude Code and Codex that forces coding agents to rewrite unit tests based solely on session prompts. By tying each test to a recorded prompt, test coverage becomes a proxy for how much of the generated code reflects the developer's original intent. This addresses the growing lack of oversight as coding agents produce large volumes of code, using unit testing to verify that code aligns with the developer's decisions. Rudder stores prompt data locally in an SQLite database and does not transmit it to third parties. Installation is via marketplace plugins for each agent, with a simple 'Run Rudder' command to initiate the test rewrite process.

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