simulate_stack
Reflectance and transmittance of any lossless multilayer over a wavelength range, at any angle, for s, p or averaged polarization. Each run reports its energy-conservation error.
Optics MCP · v0.1.0
Thin-film optics, inside Claude
Optics MCP gives Claude the Thin Film Lab engine. Describe the coating you need, Claude designs the layer stack, and the engine computes reflectance and checks the physics before you see the answer.
Example session in Claude
YouI need a mirror for 550 nm on glass. TiO₂ and SiO₂ only.
→ design_quarter_wave_mirror { center_nm: 550, pairs: 5 }
ClaudeAn (HL)⁵H stack of 11 layers: TiO₂ 58.51 nm and SiO₂ 94.18 nm. Reflectance at 550 nm is 99.06 %, and it matches the closed-form solution (check: PASS).
Tools
Three tools Claude can call
Every result carries its own physics check, so Claude never has to guess whether a number is right.
design_quarter_wave_mirror
A quarter-wave dielectric mirror for a target wavelength, with layer thicknesses and a check against the closed-form reflectance.
verify_engine
Runs the engine self-checks on demand: energy conservation, closed-form quarter-wave stacks and bare-glass Fresnel reflection.
Install
One file, no dependencies
Optics MCP is a single file that runs locally with Node.js 18+ or Bun. Your designs never leave your machine.
Claude Code
$ curl -O https://optics.labskillz.com/optics-mcp.mjs
$ claude mcp add optics -- node "$(pwd)/optics-mcp.mjs"Claude Desktop
Add this to claude_desktop_config.json and restart Claude.
{
"mcpServers": {
"optics": { "command": "node", "args": ["/path/to/optics-mcp.mjs"] }
}
}Verification
Checked against exact physics
The same transfer-matrix engine as thinfilmlab.org. These are the values verify_engine returns.
| Check | Max error | Result |
|---|---|---|
| Energy conservation, |R+T−1|, 0–70°, s and p, 400–800 nm | 3.0×10⁻¹⁵ | PASS |
| Quarter-wave stacks vs closed form, N = 1, 3, 5, 10 | 1.1×10⁻¹⁶ | PASS |
| Bare glass vs Fresnel equation | 0 | PASS |