MCP Server Builder
anthropics/skills
Guides the design and implementation of Model Context Protocol servers in TypeScript or Python, from tool naming and error messages to evaluation.
Help a new LunCoSim user or AI agent choose the right skill, understand the Twin/USD/Modelica/Rhai/SysML/Python boundaries, install or connect MCP, and start a source or installed build.
Apache-2.0Auto-check passed
Install Luncosim Onboarding
$ npx skills add LunCoSim/lunco-sim --skill luncosim-onboarding -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install LunCoSim/lunco-sim luncosim-onboarding --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/LunCoSim/lunco-sim.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/luncosim-onboarding .claude/skills/luncosim-onboarding && 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 "luncosim-onboarding" agent skill from https://github.com/LunCoSim/lunco-sim/tree/main/skills/luncosim-onboarding into .claude/skills/luncosim-onboarding/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "luncosim-onboarding", 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/LunCoSim/lunco-sim/tree/main/skills/luncosim-onboardingType 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 LunCoSim/lunco-sim --skill luncosim-onboarding -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install LunCoSim/lunco-sim luncosim-onboarding --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/LunCoSim/lunco-sim.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/luncosim-onboarding .agents/skills/luncosim-onboarding && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "luncosim-onboarding" agent skill from https://github.com/LunCoSim/lunco-sim/tree/main/skills/luncosim-onboarding into .agents/skills/luncosim-onboarding/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "luncosim-onboarding", 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 LunCoSim/lunco-sim --skill luncosim-onboarding -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install LunCoSim/lunco-sim luncosim-onboarding --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/LunCoSim/lunco-sim.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/luncosim-onboarding .cursor/skills/luncosim-onboarding && 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 "luncosim-onboarding" agent skill from https://github.com/LunCoSim/lunco-sim/tree/main/skills/luncosim-onboarding into .cursor/skills/luncosim-onboarding/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "luncosim-onboarding", 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/LunCoSim/lunco-sim.git --path skills/luncosim-onboarding--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 LunCoSim/lunco-sim --skill luncosim-onboarding -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install LunCoSim/lunco-sim luncosim-onboarding --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/LunCoSim/lunco-sim.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/luncosim-onboarding .gemini/skills/luncosim-onboarding && 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 "luncosim-onboarding" agent skill from https://github.com/LunCoSim/lunco-sim/tree/main/skills/luncosim-onboarding into .gemini/skills/luncosim-onboarding/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "luncosim-onboarding", 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 LunCoSim/lunco-sim luncosim-onboardingInstalls 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 LunCoSim/lunco-sim --skill luncosim-onboarding -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/LunCoSim/lunco-sim.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/luncosim-onboarding .github/skills/luncosim-onboarding && 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 "luncosim-onboarding" agent skill from https://github.com/LunCoSim/lunco-sim/tree/main/skills/luncosim-onboarding into .github/skills/luncosim-onboarding/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "luncosim-onboarding", 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 LunCoSim/lunco-sim --skill luncosim-onboarding -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install LunCoSim/lunco-sim luncosim-onboarding --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/LunCoSim/lunco-sim.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/luncosim-onboarding .opencode/skills/luncosim-onboarding && 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 "luncosim-onboarding" agent skill from https://github.com/LunCoSim/lunco-sim/tree/main/skills/luncosim-onboarding into .opencode/skills/luncosim-onboarding/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "luncosim-onboarding", 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
luncosim-onboarding- GitHub stars
- 107
- Token cost
- ~504 tokens
- SKILL.md length
- 220 words
- Files
- 1
- Skills in repo
- 40
- Repo updated
- First seen
- Licence
- Apache-2.0
At a glance
Help a new LunCoSim user or AI agent choose the right skill, understand the Twin/USD/Modelica/Rhai/SysML/Python boundaries, install or connect MCP, and start a source or installed build.
- Works in 5 steps: State the requested outcome and inspect → Choose exactly one primary runbook from… → Read the owner/source and make the… → …
- Questions like where do I start
- Calls python3
- What can LunCoSim do
What it does
Luncosim Onboarding is an agent skill from LunCoSim/lunco-sim. Help a new LunCoSim user or AI agent choose the right skill, understand the Twin/USD/Modelica/Rhai/SysML/Python boundaries, install or connect MCP, and start a source or installed build. Use for questions like “where do I start”, “what can LunCoSim do”, “how do skills work”, or “which format/tool should I use”.
Its SKILL.md is about 500 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.
It works with Model Context Protocol and Python. The repository describes itself as: Collaborative Multiphysics Cosimulator For Space Missions 🌎🚀🌚. The licence is Apache-2.0.
When your agent uses it
- Questions like where do I start
- What can LunCoSim do
- How do skills work
- Which format/tool should I use
Example prompts
- “where do I start”
- “what can LunCoSim do”
- “how do skills work”
- “/luncosim-onboarding”
Requirements
- Python 3
Workflow steps
5 steps, taken from the first numbered list in SKILL.md.
- State the requested outcome and inspect
- Choose exactly one primary runbook from ../README.md.
- Read the owner/source and make the smallest authored change in the format
- Validate with the production binary or API surface named by the runbook.
- Hand off owner, files, exact checks, runtime/visual evidence, limits, and
What it can do on your machine
Read from SKILL.md and the folder at commit 43f1301. 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:
python3
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
Luncosim Onboarding loads about 504 tokens when it runs. Until then it costs about 83 tokens; SKILL.md has 220 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
The full file from LunCoSim/lunco-sim at commit 43f1301, republished under its Apache-2.0 licence (© LunCoSim). 220 words, ~504 tokens.
Download SKILL.mdSave it as
.claude/skills/luncosim-onboarding/SKILL.md (or your agent's skills folder).- name
- luncosim-onboarding
- description
- Help a new LunCoSim user or AI agent choose the right skill, understand the Twin/USD/Modelica/Rhai/SysML/Python boundaries, install or connect MCP, and start a source or installed build. Use for questions like “where do I start”, “what can LunCoSim do”, “how do skills work”, or “which format/tool should I use”.
LunCoSim onboarding and skill routing
Use this auto-discoverable skill as the first stop for an unfamiliar LunCoSim
request. The full cross-host router is ../START-HERE.md;
read it before choosing an implementation skill.
- State the requested outcome and inspect
capability-discoverywhen the feature is not already known. - Choose exactly one primary runbook from
../README.md. Supporting skills are loaded only when that primary runbook defers to them. - Read the owner/source and make the smallest authored change in the format that owns the fact: USD for scene identity/topology/materials, Modelica for continuous equations, Rhai for policy/sequencing/verdicts, SysML/KerML for requirements and verification cases, and Rust for generic engine seams.
- Validate with the production binary or API surface named by the runbook.
python3 scripts/validate_skills.pychecks this catalogue only; Python is an optional LunCoSim integration, not a normal runtime requirement. - Hand off owner, files, exact checks, runtime/visual evidence, limits, and branch/commit. “Not found” must name the searched scope; it is not a claim that the capability is impossible.
For MCP, install or run @lunco/mcp-server and point it at an already-running
LunCoSim API. The server exposes the packaged skill catalog and Markdown
resources, but it does not silently launch the simulator or replace the
production binary. Set LUNCOSIM_BIN when the simulator is installed outside
PATH; in a source checkout use the freshly built target/debug/luncosim.
© LunCoSim, Apache-2.0. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Files
Just SKILL.md in skills/luncosim-onboarding of LunCoSim/lunco-sim.
Open the folder on GitHubat commit 43f1301
Compare with similar skills
Luncosim Onboarding 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 |
|---|---|---|---|---|---|---|
| Luncosim Onboarding this skillLunCoSim/lunco-sim | 107 | — | ~504 | Automated safety check: Pass | Apache-2.0 | |
| MCP Server Builderanthropics/skills | 180k | 63 repos | ~2.3k | Automated safety check: Pass | Apache-2.0 | |
| MCP Server BuildershareAI-lab/learn-claude-code | 78k | 4 repos | ~1.2k | Automated safety check: Pass | MIT | |
| MemPalace Setup and OperationMemPalace/mempalace | 60k | — | ~2.2k | Automated safety check: Pass | MIT | |
| LangBot Plugin Developmentlangbot-app/LangBot | 18k | — | ~3.9k | Automated safety check: Pass | Apache-2.0 | |
| Vexor CLIscarletkc/vexor | 244 | 3 repos | ~1.2k | Automated safety check: Pass | MIT |
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Questions about Luncosim Onboarding
What does Luncosim Onboarding do?
Help a new LunCoSim user or AI agent choose the right skill, understand the Twin/USD/Modelica/Rhai/SysML/Python boundaries, install or connect MCP, and start a source or installed build. Luncosim Onboarding is an agent skill from LunCoSim/lunco-sim. Help a new LunCoSim user or AI agent choose the right skill, understand the Twin/USD/Modelica/Rhai/SysML/Python boundaries, install or connect MCP, and start a source or installed build.
When should I use Luncosim Onboarding?
Luncosim Onboarding fits situations like: questions like where do I start; what can LunCoSim do; how do skills work; which format/tool should I use.
How do I install Luncosim Onboarding in Claude Code?
Run `npx skills add LunCoSim/lunco-sim --skill luncosim-onboarding -a claude-code`. Or copy the skill folder (skills/luncosim-onboarding in LunCoSim/lunco-sim) into .claude/skills/luncosim-onboarding in your project. Claude Code loads it when a task matches its description.
How do I install Luncosim Onboarding in Codex?
Run `npx skills add LunCoSim/lunco-sim --skill luncosim-onboarding -a codex`. Or copy the skill folder (skills/luncosim-onboarding in LunCoSim/lunco-sim) into .agents/skills/luncosim-onboarding in your project. Codex loads it when a task matches its description.
Can I use Luncosim Onboarding 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 LunCoSim/lunco-sim --skill luncosim-onboarding -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/luncosim-onboarding, .gemini/skills/luncosim-onboarding, .github/skills/luncosim-onboarding and .opencode/skills/luncosim-onboarding in your project.
What does Luncosim Onboarding need to run?
Going by SKILL.md and its folder, Luncosim Onboarding needs the command-line tools its instructions call (python3). Our summary lists: Python 3.
Does Luncosim Onboarding 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 Luncosim Onboarding 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 Luncosim Onboarding use?
Luncosim Onboarding is published under the Apache-2.0 licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does Luncosim Onboarding use?
About 504 tokens (SKILL.md is roughly 2k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.
What are the alternatives to Luncosim Onboarding?
Skills that share tags, products or a category with Luncosim Onboarding: MCP Server Builder (anthropics/skills, 180k stars), MCP Server Builder (shareAI-lab/learn-claude-code, 78k stars), MemPalace Setup and Operation (MemPalace/mempalace, 60k stars) and LangBot Plugin Development (langbot-app/LangBot, 18k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Luncosim Onboarding?
LunCoSim (a GitHub organization) maintains it in LunCoSim/lunco-sim, which has 107 GitHub stars. The repository holds 40 skills in this directory. The repository was last updated on October 10, 2026.
Source: LunCoSim/lunco-sim on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.