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.
Protocols for driving Onshape CAD via the onshape-mcp plugin.
Install Onshape
$ npx skills add ReshefElisha/jarvis-onshape-mcp --skill onshape -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install ReshefElisha/jarvis-onshape-mcp onshape --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/ReshefElisha/jarvis-onshape-mcp.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/onshape .claude/skills/onshape && 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 "onshape" agent skill from https://github.com/ReshefElisha/jarvis-onshape-mcp/tree/main/skills/onshape into .claude/skills/onshape/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "onshape", 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/ReshefElisha/jarvis-onshape-mcp/tree/main/skills/onshapeType 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 ReshefElisha/jarvis-onshape-mcp --skill onshape -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install ReshefElisha/jarvis-onshape-mcp onshape --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/ReshefElisha/jarvis-onshape-mcp.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/onshape .agents/skills/onshape && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "onshape" agent skill from https://github.com/ReshefElisha/jarvis-onshape-mcp/tree/main/skills/onshape into .agents/skills/onshape/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "onshape", 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 ReshefElisha/jarvis-onshape-mcp --skill onshape -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install ReshefElisha/jarvis-onshape-mcp onshape --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/ReshefElisha/jarvis-onshape-mcp.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/onshape .cursor/skills/onshape && 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 "onshape" agent skill from https://github.com/ReshefElisha/jarvis-onshape-mcp/tree/main/skills/onshape into .cursor/skills/onshape/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "onshape", 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/ReshefElisha/jarvis-onshape-mcp.git --path skills/onshape--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 ReshefElisha/jarvis-onshape-mcp --skill onshape -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install ReshefElisha/jarvis-onshape-mcp onshape --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/ReshefElisha/jarvis-onshape-mcp.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/onshape .gemini/skills/onshape && 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 "onshape" agent skill from https://github.com/ReshefElisha/jarvis-onshape-mcp/tree/main/skills/onshape into .gemini/skills/onshape/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "onshape", 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 ReshefElisha/jarvis-onshape-mcp onshapeInstalls 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 ReshefElisha/jarvis-onshape-mcp --skill onshape -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/ReshefElisha/jarvis-onshape-mcp.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/onshape .github/skills/onshape && 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 "onshape" agent skill from https://github.com/ReshefElisha/jarvis-onshape-mcp/tree/main/skills/onshape into .github/skills/onshape/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "onshape", 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 ReshefElisha/jarvis-onshape-mcp --skill onshape -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install ReshefElisha/jarvis-onshape-mcp onshape --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/ReshefElisha/jarvis-onshape-mcp.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/onshape .opencode/skills/onshape && 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 "onshape" agent skill from https://github.com/ReshefElisha/jarvis-onshape-mcp/tree/main/skills/onshape into .opencode/skills/onshape/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "onshape", 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
onshape- GitHub stars
- 174
- Token cost
- ~5.2k tokens
- SKILL.md length
- 2,376 words
- Files
- 1
- Skills in repo
- 2
- Repo updated
- First seen
- Licence
- Custom licence
At a glance
Protocols for driving Onshape CAD via the onshape-mcp plugin.
- Works in 4 steps: Call describe_part_studio (not… → Verify against expectations in the text… → If text checks out, glance at the iso… → …
- Tasks that involve MCP servers
- SKILL.md covers Think out loud, Units, Coordinate frames and The render-first protocol, plus 11 more sections
- Needs GEMINI_API_KEY
What it does
Onshape is an agent skill from ReshefElisha/jarvis-onshape-mcp. Protocols for driving Onshape CAD via the onshape-mcp plugin. Render-first and entity-first workflows, unit + coordinate conventions, iteration discipline, when to reach for FeatureScript, and the gotchas (REMOVE-on-face auto-flip, Variable Studios as separate elements, deterministic ID remapping). Load before building anything in Onshape — the plugin's MCP tool surface makes more sense with this doc in context.
Its SKILL.md is about 5.2k tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.
It sits in Agent Workflows, covering MCP servers. It works with Model Context Protocol. The repository describes itself as: Jarvis Onshape MCP — Claude Code plugin for driving real Onshape CAD. Vision-decomposition skill + truth-telling + parametric iteration + FeatureScript.
When your agent uses it
- Tasks that involve MCP servers
Example prompts
- “Use the onshape skill to protocol for driving Onshape CAD via the onshape-mcp plugin”
- “/onshape”
Workflow steps
4 steps, taken from the first numbered list in SKILL.md.
- Call describe_part_studio (not individual render_ calls — describe gives structured text + images in one shot).
- Verify against expectations in the text first: is the new feature present in FEATURE TREE with status OK/INFO? Are the expected new…
- If text checks out, glance at the iso view for anything visually off (asymmetric when should be symmetric, missing material, flipped…
- If suspicious, crop_image on the specific area. Normalized [x1,y1,x2,y2] in [0,1].
What it can do on your machine
Read from SKILL.md and the folder at commit b0e7258. 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
No scripts in the folder and no shell commands in SKILL.md (its code samples are json).
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 these keys or tokens, usually read from environment variables:
GEMINI_API_KEY
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Context cost
Onshape loads about 5.2k tokens when it runs. Until then it costs about 106 tokens; SKILL.md has 2,376 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
Its licence (Custom licence) doesn't allow us to republish the file, so here is its outline and opening line. It has 2,376 words (~5,235 tokens).
“Loaded as context for any Claude session driving the Jarvis Onshape MCP plugin. Encodes the protocols that keep CAD builds from silently failing. Short, imperative.”
- name
- onshape
Files
Just SKILL.md in skills/onshape of ReshefElisha/jarvis-onshape-mcp.
Open the folder on GitHubat commit b0e7258
Compare with similar skills
Onshape 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 |
|---|---|---|---|---|---|---|
| Onshape this skillReshefElisha/jarvis-onshape-mcp | 174 | — | ~5.2k | Automated safety check: Pass | Custom licence | |
| 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 | |
| MCP Integration for Pluginsanthropics/claude-plugins-official | 38k | 11 repos | ~3.1k | Automated safety check: Pass | Apache-2.0 | |
| Crush Configurationcharmbracelet/crush | 29k | — | ~3.7k | Automated safety check: Pass | Custom licence | |
| Context Mode Output Sandboxmksglu/context-mode | 26k | — | ~4.1k | Automated safety check: Pass | Custom licence |
Similar skills
- Official
MCP Server Builder
shareAI-lab/learn-claude-code
Walks through building MCP servers in Python or TypeScript that expose tools, resources and prompts to Claude, with templates, registration and testing.
- Official
MCP Integration for Plugins
anthropics/claude-plugins-official
Explains how to bundle Model Context Protocol servers in a Claude Code plugin, covering config files, stdio, SSE, HTTP and WebSocket server types, and authentication.
Crush Configuration
charmbracelet/crush
Explains how to configure the Crush coding agent with crushrc or crush.json, covering providers, models, LSPs, MCP servers, hooks, permissions and config precedence.
Context Mode Output Sandbox
mksglu/context-mode
Routes large command, file, API and browser output through context-mode tools so only the needed result enters the agent's context, instead of dumping it via Bash.
Warp GUI to Agent CLI Migration
warpdotdev/warp
Migrates the compatible subset of settings and global file-based MCP servers from the Warp desktop app into Warp Agent CLI without exposing credentials or state.
More from ReshefElisha/jarvis-onshape-mcp
Vision Decompose
ReshefElisha/jarvis-onshape-mcp
Look at an engineering reference image (drawing, iso render, photo) and produce a structured feature decomposition BEFORE building anything in Onshape.
Related
Works with
Categories
Questions about Onshape
What does Onshape do?
Protocols for driving Onshape CAD via the onshape-mcp plugin. Onshape is an agent skill from ReshefElisha/jarvis-onshape-mcp. Protocols for driving Onshape CAD via the onshape-mcp plugin.
When should I use Onshape?
Onshape fits situations like: tasks that involve MCP servers.
How do I install Onshape in Claude Code?
Run `npx skills add ReshefElisha/jarvis-onshape-mcp --skill onshape -a claude-code`. Or copy the skill folder (skills/onshape in ReshefElisha/jarvis-onshape-mcp) into .claude/skills/onshape in your project. Claude Code loads it when a task matches its description.
How do I install Onshape in Codex?
Run `npx skills add ReshefElisha/jarvis-onshape-mcp --skill onshape -a codex`. Or copy the skill folder (skills/onshape in ReshefElisha/jarvis-onshape-mcp) into .agents/skills/onshape in your project. Codex loads it when a task matches its description.
Can I use Onshape 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 ReshefElisha/jarvis-onshape-mcp --skill onshape -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/onshape, .gemini/skills/onshape, .github/skills/onshape and .opencode/skills/onshape in your project.
What does Onshape need to run?
Going by SKILL.md and its folder, Onshape needs credentials named GEMINI_API_KEY.
Does Onshape 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 Onshape 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 Onshape use?
Onshape has a licence file (the repository's licence) that doesn't match a standard licence. Read it on GitHub before reusing the skill.
How many tokens does Onshape use?
About 5.2k tokens (SKILL.md is roughly 21k 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 Onshape?
Skills that share tags, products or a category with Onshape: MCP Server Builder (anthropics/skills, 180k stars), MCP Server Builder (shareAI-lab/learn-claude-code, 78k stars), MCP Integration for Plugins (anthropics/claude-plugins-official, 38k stars) and Crush Configuration (charmbracelet/crush, 29k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Onshape?
ReshefElisha (a GitHub user) maintains it in ReshefElisha/jarvis-onshape-mcp, which has 174 GitHub stars. The repository holds 2 skills in this directory. The repository was last updated on April 22, 2026.
Source: ReshefElisha/jarvis-onshape-mcp on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.