3DOptix

3DOptix for AI coding agents

Design, simulate and analyse optical systems from your coding agent, using the 3DOptix cloud platform.

This repository is a plugin — it bundles the 3DOptix MCP server together with a skill that teaches the agent how to use it well. Install it once and your agent can build optical setups, place lenses and detectors, run GPU ray-trace simulations and advanced optical analysis.

Skills here follow the Agent Skills open standard, so they work in Claude Code, Codex, Cursor and other compliant clients.

---

Install

Claude Code

claude plugin marketplace add 3doptix/skills

claude plugin install 3doptix@3doptix

Codex

codex plugin marketplace add 3doptix/skills

codex plugin add 3doptix@3doptix

Just the MCP server

If you only want the tools and not the workflow guidance, the server is listed in the MCP Registry as com.3doptix/optical-design, or add it directly:

claude mcp add --transport http 3doptix https://mcp.3doptix.com

Connect your account

You need a 3DOptix account. New sign-ups at 3doptix.com get a fully functional trial; continued use needs a subscription.

Authentication is OAuth 2.0 with dynamic client registration. There is no API key to paste.

• Claude Code — run /mcp, select 3doptix, sign in via the browser.
• Codex — run codex mcp login 3doptix.

Then confirm it worked by asking your agent to list your setups. Your agent can also walk you through this itself — the bundled 3doptix-setup skill activates on connection errors. Full troubleshooting: skills/3doptix-setup/SKILL.md.

---

What's included

The 3doptix MCP server provides tools for setups, parts, the optics and optomechanics catalogs, simulation, analysis and rendering. Tool reference: 3doptix.com.

Try it

Build a 2-lens beam expander for a 5 mm 632 nm beam, 3× magnification,

then run a spot diagram on the output.

Import my Zemax file into 3DOptix and tell me where the aberrations are worst.

---

Repository layout

.claude-plugin/     Claude Code plugin + marketplace manifests

.codex-plugin/ Codex plugin manifest .agents/plugins/ Codex marketplace manifest .mcp.json The 3DOptix remote MCP server server.json MCP Registry entry skills/ Agent Skills — shared by every store assets/ Store icons (the spectral sphere from the 3DOptix mark) scripts/ validate.js, set-version.js — plain Node, no dependencies

Skill content lives in exactly one place. Each store gets a small manifest pointing at the same skills/ tree — nothing is duplicated per client.

There is no build step. Skills are Markdown and manifests are JSON, so what you see here is exactly what gets installed.

---

Contributing

Adding a skill

Create skills/ /SKILL.md with the required frontmatter:

---

name: your-skill-name description: "When this skill should and should not trigger."

---

name must match the directory name — every store enforces this. Put anything lazily loaded in skills/ /references/ and point at it from SKILL.md. Skills are discovered by directory, so there is no manifest to register a new one in.

Only skills under skills/ ship. A skill still in development belongs in an inactive-skills/ directory instead — no store scans it there, so it can live in the repository without reaching users.

Checks

node scripts/validate.js

No install step; it has no dependencies. It checks skill frontmatter against the Agent Skills spec, confirms all four manifests agree on a version, and refuses to pass if .mcp.json ever grows a credential. CI runs the same script on every push and pull request.

Before publishing a change, also confirm what a user will actually receive:

claude plugin details 3doptix

Releasing

.claude-plugin/plugin.json holds the authoritative version. To cut a release:

node scripts/set-version.js 1.1.0   # writes all four manifests

node scripts/validate.js git commit -am "release: 1.1.0" && git tag v1.1.0 git push && git push --tags

Never edit a manifest's `version` by hand — validate.js will fail, which is the point.

Directories that list this plugin track commits on main and pick up changes automatically, so a push is a release whether or not you tag it. Tag anyway; it is how users pin a known-good version.

---

Support

• Product and accounts — support@3doptix.com
• Bugs in these skills — open an issue on this repository
• Privacy — privacy policy

Licence

MIT — see LICENSE.