create-harness-vibe-coding

A Node.js CLI that sets up a repo-local harness for AI-assisted development workflows. It provides Claude Code, Codex, and compatible agents with a shared operating system covering research, planning, architecture, implementation, testing, and recovery. The framework emphasizes measured reliability over claimed productivity gains, with built-in verification and durable memory.

Teams use Harness to enable safer code changes through conflict handling, recover interrupted work without re-reading repositories, and make testing part of the definition of done. The maker reports prompt-cache improvements of 5–6 percentage points in warm reads across different harness configurations.