HarnessRouter: Run Claude Code, Codex & Gemini CLI From One Place (Free)

HarnessRouter: Run Claude Code, Codex & Gemini CLI From One Place (Free) Harness Router is a free, open-source tool that lets you access any AI harness — Claude Code, Codex, Gemini CLI, and more — from a single place. In this video, I walk through what it is, why the harness you pick matters, and demo it end-to-end with expense reports, dashboards, and slides. 🔗 Links: • Harness Router: https://github.com/HarnessRouter/harnessrouter • Docker Desktop: https://www.docker.com/products/docker-desktop ⏱️ Chapters: 0:00 Introduction 1:10 Why the Harness Matters 1:31 The Benchmark Test 2:01 Getting Started 3:09 Expense Report Demo 5:02 Starter Kits Demo 6:01 Conclusion 📌 What you'll learn: • How Harness Router lets you switch between Claude Code, Codex, Gemini CLI, and other harnesses without touching your app • Why the harness you choose matters more than you think (a 50-job benchmark test proves it) • How to set up Harness Router with a single Docker command • A full expense report demo — catching 7 hidden mistakes across different harnesses • How to create a custom harness with built-in policies your whole team can reuse • Starter kits for auto-generating dashboards and slide decks from plain English --- If this video was helpful, please like and subscribe! Questions? Drop them in the comments below.