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GitHub · Chachamaru127/claude-code-harness↑ +87 today

Disciplined Development with Claude Code

Claude Code Harness introduces the discipline of plan, do, review and deliver, curbing the tendency for raw agent work to fall apart. It prevents plans from getting lost in the chat, limits testing, and ensures more consistent code production. Although Claude is Code-centric, it also offers integration paths for Codex and OpenCode.

Updates

  • October 15, 2026: Stars 3,092 → 3,164, latest release v5.16.0 (October 15, 2026).
  • September 6, 2026: Stars 3,076 → 3,092, latest release v5.15.0 (September 6, 2026).
  • August 31, 2026: Stars 3,071 → 3,076, latest release v5.14.1 (August 31, 2026).
  • August 27, 2026: Stars 3,070 → 3,071, latest release v5.13.1 (August 25, 2026).

What you get

  • The agent does not disperse; The plan is kept on record.
  • Quality is increased by limiting tests.
  • More predictable and consistent results are obtained.

Installation

Global with npm
npm install -g claude-code-harness

Getting started

Integrated into Claude Code with installation in the repository; then implements the plan, do, review cycle.

How to install, how to use?

Paste this into your AI agent (Claude Code · Codex · Antigravity)

Set up this disciplined workflow in Claude Code by running '/plugin marketplace add Chachamaru127/claude-code-harness', then '/plugin install claude-code-harness@claude-code-harness-marketplace' and '/harness-setup', then get started with '/harness-plan'.

Repository: https://github.com/Chachamaru127/claude-code-harness. Follow the official instructions in the README of this repository for setup and execution.

Before starting, check which OS we are on and if the necessary tools (e.g., Python, Node.js, Git, Docker) are installed. Install any missing ones step-by-step according to this system.

Create a new, empty folder to work in. Do not touch any files outside this folder and do not delete anything. Tell me what you are going to do in one sentence before running each command.

Tell me what I should see on the screen at the end of each step. If an error occurs, I will paste the error message to you exactly as it is, and we will fix it together.

Related dictionary terms

HarnessPluginShellOpen SourceArtificial Intelligence
Who it is forDevelopers who do serious business with Claude Code
DifficultyMedium · Claude Code usage
What offersDisciplined plan-do-review cycle
It worksClaude Code (+ Codex, OpenCode)
FeeFree · open source (MIT)
License: MIT · You can use it freely, modify it, and use it commercially.

Links

TreScout did not build this tool · we found it in GitHub trends and wrote it up. This page describes the repository as of 2026-05-28: The star count and our text belong to that day, the repository may have changed since. Check the repository link for the current state. The introductory text was prepared with AI from the repository's own documentation, and this page was machine-translated from the Turkish original · the Turkish version prevails.