npm Supply Chain Security
bodadotsh/npm-security-best-practices
Applies safer package manager defaults and dependency vetting to JavaScript and TypeScript projects to reduce supply-chain attack risk.
Write MoonBit bindings to JavaScript with extern "js". An agent skill from mizchi/skills.
Install Moonbit JS Binding
$ npx skills add mizchi/skills --skill moonbit-js-binding -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install mizchi/skills moonbit-js-binding --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/mizchi/skills.git skills-src && mkdir -p .claude/skills && cp -r skills-src/moonbit-js-binding .claude/skills/moonbit-js-binding && rm -rf skills-srcUse ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.
Claude Code skills documentation · loads skills from .claude/skills/
Install the "moonbit-js-binding" agent skill from https://github.com/mizchi/skills/tree/main/moonbit-js-binding into .claude/skills/moonbit-js-binding/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "moonbit-js-binding", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/mizchi/skills/tree/main/moonbit-js-bindingType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add mizchi/skills --skill moonbit-js-binding -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install mizchi/skills moonbit-js-binding --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/mizchi/skills.git skills-src && mkdir -p .agents/skills && cp -r skills-src/moonbit-js-binding .agents/skills/moonbit-js-binding && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "moonbit-js-binding" agent skill from https://github.com/mizchi/skills/tree/main/moonbit-js-binding into .agents/skills/moonbit-js-binding/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "moonbit-js-binding", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add mizchi/skills --skill moonbit-js-binding -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install mizchi/skills moonbit-js-binding --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/mizchi/skills.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/moonbit-js-binding .cursor/skills/moonbit-js-binding && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "moonbit-js-binding" agent skill from https://github.com/mizchi/skills/tree/main/moonbit-js-binding into .cursor/skills/moonbit-js-binding/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "moonbit-js-binding", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/mizchi/skills.git --path moonbit-js-binding--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add mizchi/skills --skill moonbit-js-binding -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install mizchi/skills moonbit-js-binding --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/mizchi/skills.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/moonbit-js-binding .gemini/skills/moonbit-js-binding && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "moonbit-js-binding" agent skill from https://github.com/mizchi/skills/tree/main/moonbit-js-binding into .gemini/skills/moonbit-js-binding/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "moonbit-js-binding", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install mizchi/skills moonbit-js-bindingInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add mizchi/skills --skill moonbit-js-binding -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/mizchi/skills.git skills-src && mkdir -p .github/skills && cp -r skills-src/moonbit-js-binding .github/skills/moonbit-js-binding && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "moonbit-js-binding" agent skill from https://github.com/mizchi/skills/tree/main/moonbit-js-binding into .github/skills/moonbit-js-binding/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "moonbit-js-binding", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add mizchi/skills --skill moonbit-js-binding -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install mizchi/skills moonbit-js-binding --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/mizchi/skills.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/moonbit-js-binding .opencode/skills/moonbit-js-binding && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "moonbit-js-binding" agent skill from https://github.com/mizchi/skills/tree/main/moonbit-js-binding into .opencode/skills/moonbit-js-binding/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "moonbit-js-binding", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
moonbit-js-binding- GitHub stars
- 356
- Token cost
- ~6.2k tokens
- SKILL.md length
- 2,519 words
- Files
- 18 (incl. references, assets)
- Skills in repo
- 69
- Repo updated
- First seen
- Licence
- None found
At a glance
Write MoonBit bindings to JavaScript with extern "js". An agent skill from mizchi/skills.
- Works in 5 steps: Project Setup → FFI Layer → MoonBit API → …
- FFI declarations against browser/Node/Deno APIs
- SKILL.md covers When To Use, Plan Mode Instructions, Type Mapping and Workflow, plus 4 more sections
- Calls node
What it does
Moonbit JS Binding is an agent skill from mizchi/skills. Write MoonBit bindings to JavaScript with extern "js". Use for FFI declarations against browser/Node/Deno APIs or npm packages, wrapping JS objects in opaque types, bridging Promises (async fn / Promise::wait()), moon.pkg exports (esm/cjs/iife), and null/undefined at the JS boundary.
Its SKILL.md is about 6.2k tokens, which your agent loads only when the skill is triggered. The skill folder holds 21 other files, including reference files and assets (for example `README.md`, `references/cfg-and-target-gating.md` and `references/error-handling.md`).
It sits in Agent Workflows. It works with npm, JavaScript and Deno. The repository describes itself as: Agent skills by mizchi, distributed via APM.
When your agent uses it
- FFI declarations against browser/Node/Deno APIs
- Wrapping JS objects in opaque types
- Bridging Promises (async fn / Promise::wait())
- Moon.pkg exports (esm/cjs/iife)
Example prompts
- “/moonbit-js-binding”
Workflow steps
5 steps, taken from the step headings in SKILL.md.
- Project Setup
- FFI Layer
- MoonBit API
- Promise / Async Bridging
- Testing
What it can do on your machine
Read from SKILL.md and the folder at commit 62f5808. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
Shell commands in SKILL.md call:
node
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md.
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Context cost
Moonbit JS Binding loads about 6.2k tokens when it runs, and up to ~12k if it reads all its reference files. Until then it costs about 78 tokens; SKILL.md has 2,519 words of instructions outside code blocks.
Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.
Safety
Auto-check passed
The automated check found no risky patterns in SKILL.md.
Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.
SKILL.md
Without a licence we can't republish the file, so here is its outline and opening line. It has 2,519 words (~6,248 tokens).
“Step-by-step workflow for binding JavaScript APIs (browser DOM, Node built-ins, npm packages) to MoonBit through the js backend.”
- name
- moonbit-js-binding
Files
SKILL.md and 17 other files (references, assets) in moonbit-js-binding of mizchi/skills.
- SKILL.md
- README.md
- assets/js_binding_proj/moon.mod
- assets/js_binding_proj/src/async.mbt
- assets/js_binding_proj/src/async_test.mbt
- assets/js_binding_proj/src/cross_target.mbt
- assets/js_binding_proj/src/cross_target_test.mbt
- assets/js_binding_proj/src/ffi.mbt
- assets/js_binding_proj/src/lib.mbt
- assets/js_binding_proj/src/lib_test.mbt
- assets/js_binding_proj/src/modules.mbt
- assets/js_binding_proj/src/modules_test.mbt
- assets/js_binding_proj/src/moon.pkg
- references/cfg-and-target-gating.md
- references/error-handling.md
- references/interop-patterns.md
- references/promise-bridging.md
- … and 1 more
Open the folder on GitHubat commit 62f5808
Compare with similar skills
Moonbit JS Binding next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Moonbit JS Binding this skillmizchi/skills | 356 | — | ~6.2k | Automated safety check: Pass | None | |
| npm Supply Chain Securitybodadotsh/npm-security-best-practices | 859 | — | ~1k | Automated safety check: Warn | MIT | |
| Denomajiayu000/claude-skill-registry | 666 | 1 repos | ~1.8k | Automated safety check: Pass | Apache-2.0 | |
| Yahoo Finance2gadicc/yahoo-finance2 | 801 | — | ~1.8k | Automated safety check: Pass | MIT | |
| Sync Public DocsCaldis/react-zmage | 946 | — | ~3.3k | Automated safety check: Pass | MIT | |
| Htmlhintmanagedcode/dotnet-skills | 486 | — | ~1.2k | Automated safety check: Pass | MIT |
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Questions about Moonbit JS Binding
What does Moonbit JS Binding do?
Write MoonBit bindings to JavaScript with extern "js". An agent skill from mizchi/skills. Moonbit JS Binding is an agent skill from mizchi/skills. Write MoonBit bindings to JavaScript with extern "js".
When should I use Moonbit JS Binding?
Moonbit JS Binding fits situations like: FFI declarations against browser/Node/Deno APIs; wrapping JS objects in opaque types; bridging Promises (async fn / Promise::wait()); moon.pkg exports (esm/cjs/iife).
How do I install Moonbit JS Binding in Claude Code?
Run `npx skills add mizchi/skills --skill moonbit-js-binding -a claude-code`. Or copy the skill folder (moonbit-js-binding in mizchi/skills) into .claude/skills/moonbit-js-binding in your project. Claude Code loads it when a task matches its description.
How do I install Moonbit JS Binding in Codex?
Run `npx skills add mizchi/skills --skill moonbit-js-binding -a codex`. Or copy the skill folder (moonbit-js-binding in mizchi/skills) into .agents/skills/moonbit-js-binding in your project. Codex loads it when a task matches its description.
Can I use Moonbit JS Binding in Cursor, Gemini CLI or GitHub Copilot?
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add mizchi/skills --skill moonbit-js-binding -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/moonbit-js-binding, .gemini/skills/moonbit-js-binding, .github/skills/moonbit-js-binding and .opencode/skills/moonbit-js-binding in your project.
What does Moonbit JS Binding need to run?
Going by SKILL.md and its folder, Moonbit JS Binding needs the command-line tools its instructions call (node).
Does Moonbit JS Binding access the network?
SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.
Is Moonbit JS Binding safe to install?
Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.
What licence does Moonbit JS Binding use?
No licence was found for Moonbit JS Binding or its repository. Without one, default copyright applies: ask the author before reusing or redistributing it.
How many tokens does Moonbit JS Binding use?
About 6.2k tokens (SKILL.md is roughly 25k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 5.3k tokens, read only when the agent opens those files.
What are the alternatives to Moonbit JS Binding?
Skills that share tags, products or a category with Moonbit JS Binding: npm Supply Chain Security (bodadotsh/npm-security-best-practices, 859 stars), Deno (majiayu000/claude-skill-registry, 666 stars), Yahoo Finance2 (gadicc/yahoo-finance2, 801 stars) and Sync Public Docs (Caldis/react-zmage, 946 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Moonbit JS Binding?
mizchi (a GitHub user) maintains it in mizchi/skills, which has 356 GitHub stars. The repository holds 69 skills in this directory. The repository was last updated on October 2, 2026.
Source: mizchi/skills on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.