Mstar Harness Core

Q: What is a Claude Code skill and how does the Mstar Harness Core skill fit in?

A Claude Code skill is a SKILL.md file that lives under ~/.claude/skills/<name>/ and tells the Claude Code CLI agent how to perform a specific task (instructions, prompts, allowed tools). Skills are auto-discovered at session start. Mstar Harness Core is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the General category. Learn more at https://claudskills.com/learn/what-is-skill-md/.

Category: General · Sub-category: ai-tooling · Last updated: 2026-05-21

ai:llm

Morning Star (启明星) harness 的**强制全局入口** —— 多角色 agent 交付的生命周期、状态机、Spec-Driven 双阶段门禁、Task category 路由、意图门禁、@explore 能力边界、长任务纪律、Git 功能分支与 worktree 隔离、QC/QA 检出上下文对齐、Context7 共享检索协议、Morning Star Skill 索引、护栏不变量、反模式与升级触发。**任何**在本配置仓库下工作的 code agent，在开始**任何非平凡任务之前**都必须 Read 本 skill 与当前任务相关的 `references/`。`@project-manager` 每轮编排前必读；所有实现/审查/QA/运维角色在接受 Assignment 后动手前必读；`@prompt-engineer` 改 prompt/skill 前必读；宿主自动注入的根目录 `AGENTS.md` 的全部作用就是把你指到本 skill。用于 OpenCode、Cursor 或任何多角色 code agent harness；与业务仓库具体技术栈无关。

Security AStatic scan found no risk patternsHow grading works ›

From the source SKILL.md

本 skill 是 Morning Star / 启明星 code agent harness 的唯一全局入口与 SSOT。根目录 AGENTS.md 已瘦身为一句"强制读本 skill"的提示；所有执行向规则、skill 索引、护栏不变量与交付循环，全部在此维护。其它 mstar-* skill 只承载细分主题的展开；与本 skill 有冲突时，以本 skill 的状态机、门禁与路由表为准。

What this skill does

Mstar Harness Core is a community-contributed Claude Code skill in the ai-tooling sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/mstar-harness-core/ and loads when your prompt matches the skill's trigger.

Who uses this skill

The Mstar Harness Core Claude Code skill is built for Claude Code users and developers across all disciplines looking for general-purpose AI assistance. It's part of ClaudSkills (also referred to as Claude Skills or Claude Code Skills) — the open community-curated registry of 152,000+ SKILL.md files for Anthropic's Claude Code agent and the wider Claude ecosystem (Claude API, Claude Agent SDK).

How to install

Free

Manual install (2 steps)

mkdir -p ~/.claude/skills/mstar-harness-core
curl -L https://claudskills.com/skills/mstar-harness-core/SKILL.md \
  -o ~/.claude/skills/mstar-harness-core/SKILL.md

Or just download SKILL.md directly and drop it into ~/.claude/skills/mstar-harness-core/. Claude Code auto-discovers it on next session.

Skills live at ~/.claude/skills/mstar-harness-core/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\mstar-harness-core\SKILL.md on Windows. See the full install guide for step-by-step instructions.

📱 Install from your phone or desktop Telegram

Open @claudskills_bot on Telegram, tap Open Desktop App, and the desktop app installs this skill for you. Or share the bot link with a colleague — they get the same one-tap install. Learn more →

Pro

One-click install via the desktop app

The ClaudSkills desktop app installs any skill directly into ~/.claude/skills/ with one click — no terminal required. Pro starts at $9/mo or $149 lifetime.

Pro

For the full experience including quality scoring and one-click install features for each skill — upgrade to Pro.

See pricing → Download desktop app

Frequently asked questions

How do I install the Mstar Harness Core Claude Code skill?

Install via the ClaudSkills desktop app (one click) or copy SKILL.md from the source repository to ~/.claude/skills/mstar-harness-core/SKILL.md and restart Claude Code. Both flows are detailed at claudskills.com/install/.

What does the Mstar Harness Core skill do?

Is this skill free to install?

Yes. ClaudSkills is an open registry — every skill keeps its source repository's license, and manual install via copy is free. ClaudSkills Pro ($9/mo, $79/yr, or $149 one-time) adds one-click install via the desktop app and a multi-signal Quality Score.

When should I use the Mstar Harness Core skill?

Use Mstar Harness Core when your Claude Code task falls under the General category — specifically in the ai tooling area. Claude Code auto-discovers installed skills and invokes the right one based on the task description, so you can also ask Claude directly (e.g. "use Mstar Harness Core" or describe the task and let Claude pick). Browse related skills at /category/general/.

What is a Claude Code skill and how does the Mstar Harness Core skill fit in?

A Claude Code skill is a SKILL.md file that lives under ~/.claude/skills/<name>/ and tells the Claude Code CLI agent how to perform a specific task (instructions, prompts, allowed tools). Skills are auto-discovered at session start. Mstar Harness Core is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the General category. Learn more at /learn/what-is-a-claude-skill/.

Attribution & license

Source: https://github.com/btspoony/mstar-harness/blob/HEAD/skills/mstar-harness-core/SKILL.md
Author: btspoony

Cite this skill

If you reference this skill in a blog post, paper, or documentation, you can cite it as:

APA

btspoony. (2026). Mstar Harness Core [Claude Code skill]. ClaudSkills. https://claudskills.com/skills/mstar-harness-core/

BibTeX

@misc{mstar-harness-core-2026,
  author    = {btspoony},
  title     = {Mstar Harness Core [Claude Code skill]},
  year      = {2026},
  publisher = {ClaudSkills},
  url       = {https://claudskills.com/skills/mstar-harness-core/}
}

Embed this skill

Promote, attribute, or link this skill from your own README, blog post, or documentation. All three snippets are free to use — no sign-up, no API key. More distribution surfaces →

Badge

[![ClaudSkills](https://claudskills.com/badge/mstar-harness-core.svg)](https://claudskills.com/skills/mstar-harness-core/?utm_source=badge&utm_medium=readme&utm_campaign=skill_badge)

Security scan

Grade A · scanned 2026-07-16 — free static scan against the OWASP Agentic Skills Top 10.

No risk patterns were found in any of the ten OWASP-aligned categories. How grading works ›

✓ Prompt injection
✓ Data exfiltration
✓ Supply chain
✓ Reverse shell
✓ Credentials
✓ Execution
✓ Filesystem
✓ Persistence
✓ Obfuscation
✓ Network

Show this grade on your repo (click to copy):

[![Security: A](https://img.shields.io/badge/Security-A-2e7d32)](https://claudskills.com/skills/mstar-harness-core/#security)

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Part of ClaudSkills — the open registry for Claude Skills & Claude Code Skills. · What's New · Install guide · About · llms.txt

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