codex-harness: Skill for Claude Code

.codex/skills/harness-ui/SKILL.md

harness-ui is a skill for Claude Code, Codex from Chachamaru127/codex-harness. It costs 60 tokens per session (950 once invoked), scanned A, original, MIT.

A dashboard command for viewing Harness project activity, including sessions, tasks, plans, and project status. Harness is a tool for coordinating and monitoring coding-agent work.

In plain words
What is it for?
Use it when opening the Harness dashboard, monitoring sessions or tasks, viewing Plans.md status, or changing the dashboard license key.
Why use it?
It gives you one place to inspect current work and progress instead of checking each status separately.

Skill for Claude CodeCodex

Written for Claude Code and Codex: allowed-tools in frontmatter, but also installed under .codex/. Also seen: mentions Claude Code.

This is Chachamaru127/codex-harness's own configuration. It tells Claude Code and Codex how to work on codex-harness itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything codex-harness configures →

Runs only inside a plugin — its command needs a path that Claude Code sets for a plugin’s own hooks and for nothing else, and the catalogue could not identify which plugin ships it.

Reuse

Borrowing it

Nothing to install: this file belongs to Chachamaru127/codex-harness. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/Chachamaru127/codex-harness/main/.codex/skills/harness-ui/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/Chachamaru127/codex-harness

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for harness-ui

README.md
[![agentmods](https://agentmods.dev/badge/skills/chachamaru127/codex-harness/harness-ui.svg)](https://agentmods.dev/skills/chachamaru127/codex-harness/harness-ui)
Your own site
<a href="https://agentmods.dev/skills/chachamaru127/codex-harness/harness-ui"><img src="https://agentmods.dev/badge/skills/chachamaru127/codex-harness/harness-ui.svg" alt="Measured on agentmods" height="20"></a>
Per session 60 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 950 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00060 $0.00950
Opus 5 $0.00030 $0.00475
Sonnet 5 $0.00012 $0.00190
Haiku 4.5 $0.00006 $0.00095

Measured 6d ago against content hash 97788668f66d, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

harness-ui scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 6d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

.codex/skills/harness-ui/SKILL.md · 135 lines

How it starts

The opening of the file, as written. The whole thing — 135 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Harness UI Skill

Displays the Harness UI dashboard for monitoring sessions, tasks, and project status.

Quick Reference

  • "UIを開きたい" → /harness-ui
  • "ダッシュボードを見たい" → /harness-ui
  • "ライセンスキーを設定" → /harness-ui YOUR-KEY

Usage

/harness-ui              # Open dashboard (auto-setup if needed)
/harness-ui YOUR-KEY     # Set license key and open
/harness-ui --force      # Force re-setup

Accessibility Settings (CC 2.1.38+)

視覚的な快適性のための設定です。

Reduced Motion 設定

Claude Code の設定ファイルでアニメーションを最小化できます:

// settings.json
{
  "reducedMotion": true  // アニメーションを最小化
}

推奨設定:

設定 用途
reducedMotion: true モーション酔い対策、集中力向上
reducedMotion: false デフォルト(アニメーションあり)

こんな方におすすめ:

  • 長時間作業で目が疲れやすい方
  • アニメーションによる視覚的な刺激に敏感な方
  • 集中して作業したい方

設定ファイルの場所:

  • macOS: ~/Library/Application Support/Claude/settings.json
  • Windows: %APPDATA%\Claude\settings.json
  • Linux: ~/.config/Claude/settings.json

Features

  • Session monitoring
  • Task progress visualization
  • Plans.md status display
  • SSOT file overview
  • Real-time updates

Execution Flow

Step 1: Check License Key

SETTINGS_FILE=".claude/state/ui-settings.json"

if [ -f "$SETTINGS_FILE" ]; then
  LICENSE_KEY=$(jq -r '.licenseKey // ""' "$SETTINGS_FILE")
  if [ -n "$LICENSE_KEY" ]; then
    echo "License key found"
    # → Open dashboard
  fi
fi

Step 2: Setup Mode (If No Key)

If license key is not configured:

Harness UI Setup

License key is required to use Harness UI.

Get your key at: https://harness-ui.example.com/license

Enter your license key:

Wait for response

Step 3: Save Settings

mkdir -p .claude/state
cat > "$SETTINGS_FILE" << EOF
{
  "licenseKey": "$LICENSE_KEY",
  "configured_at": "$(date -u +%Y-%m-%dT%H:%M:%SZ)"
}
EOF

Step 4: Open Dashboard

# Start UI server
cd "${CLAUDE_PLUGIN_ROOT}/harness-ui"
npm run dev &

# Open in browser
open http://localhost:3001

Read the full file on GitHub · 135 lines

Files

What ships with it

1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 6d ago First seen · 135 lines · 60 tokens per session scan A 97788668f66d

Subscribe to this mod's changes

harness-ui is a skill published in the GitHub repository Chachamaru127/codex-harness (2 stars, last pushed 6mo ago), licensed MIT. It adds 60 tokens to every session and 950 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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