Moonbit Agent Guide

Q: What is a Claude Code skill and how does the Moonbit Agent Guide 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. Moonbit Agent Guide is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the Engineering category. Learn more at https://claudskills.com/learn/what-is-skill-md/.

Category: Engineering · Sub-category: testing · Last updated: 2026-06-11

ai:agent

Guide for writing, refactoring, and testing MoonBit projects. Use when working in MoonBit modules or packages, organizing MoonBit files, using moon tooling (build/check/r — from majiayu000/claude-skill-registry

About this skill (catalog notes)

Moonbit Agent Guide includes worked examples; 31 code blocks for direct copy-paste. At roughly 5,764 words the SKILL.md is on the longer end of the catalog distribution.

Source: majiayu000.github.io/claude-skill-registry
License: MIT
Original author: majiayu000
Indexed lastmod: 2026-06-11
Catalog position: Engineering · testing
Indexed related skills: 10

How Moonbit Agent Guide fits the catalog

Moonbit Agent Guide sits in the Engineering category under the testing sub-topic in the ClaudSkills catalog. There are 10 related skills indexed alongside it; comparing a few before installing usually reveals which fits your workflow best.

These notes are auto-generated from features detected in the SKILL.md file and from this catalog's structure — they aren't part of the source repository.

From the source SKILL.md

MoonBit uses the .mbt extension for source code files and interface files with the .mbti extension. At the top-level of a MoonBit project there is a moon.mod.json file specifying the metadata of the project. The project may contain multiple packages, each with its own moon.pkg or moon.pkg.json file. Subdirectories may also contain moon.mod.json files indicating that a different set of dependencies can be used for that subdir.

What this skill does

Moonbit Agent Guide is a community-contributed Claude Code skill in the testing sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/moonbit-agent-guide/ and loads when your prompt matches the skill's trigger.

Who uses this skill

The Moonbit Agent Guide Claude Code skill is built for software engineers, backend developers, full-stack teams, and technical leads building and maintaining production systems. It's part of ClaudSkills (also referred to as Claude Skills or Claude Code Skills) — the open community-curated registry of 97,000+ 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/moonbit-agent-guide
curl -L https://claudskills.com/skills/moonbit-agent-guide/SKILL.md \
  -o ~/.claude/skills/moonbit-agent-guide/SKILL.md

Or just download SKILL.md directly and drop it into ~/.claude/skills/moonbit-agent-guide/. Claude Code auto-discovers it on next session.

Skills live at ~/.claude/skills/moonbit-agent-guide/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\moonbit-agent-guide\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 Moonbit Agent Guide Claude Code skill?

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

What does the Moonbit Agent Guide 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 Moonbit Agent Guide skill?

Use Moonbit Agent Guide when your Claude Code task falls under the Engineering category — specifically in the testing 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 Moonbit Agent Guide" or describe the task and let Claude pick). Browse related skills at /category/engineering/.

What is a Claude Code skill and how does the Moonbit Agent Guide 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. Moonbit Agent Guide is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the Engineering category. Learn more at /learn/what-is-a-claude-skill/.

Attribution & license

Source: https://github.com/majiayu000/claude-skill-registry/blob/c3c74454d99f7ccaef74e3aee4e7e05e6d61be38/skills/data/moonbit-agent-guide/SKILL.md
License: MIT
Author: majiayu000
Website: https://majiayu000.github.io/claude-skill-registry/

Cite this skill

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

APA

majiayu000. (2026). Moonbit Agent Guide [Claude Code skill]. ClaudSkills. https://claudskills.com/skills/moonbit-agent-guide/

BibTeX

@misc{moonbit-agent-guide-2026,
  author    = {majiayu000},
  title     = {Moonbit Agent Guide [Claude Code skill]},
  year      = {2026},
  publisher = {ClaudSkills},
  url       = {https://claudskills.com/skills/moonbit-agent-guide/}
}

Embed this skill

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Badge

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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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