MetaModelMetaModel
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For engineer-to-order manufacturers

Where are you starting from?

Quote your engineered product in minutes, with the drawing attached.

MetaModel turns the rules in your quoting spreadsheet into a live configurator: one model that holds the engineering, the manufacturing rules, the materials and the labor — and gives back 3D, a dimensioned drawing and a complete quote, not just a price. Your estimators build it, not a CAD team. On your website it turns visitors into complete RFQs.

One live model — engineering, manufacturing, materials, labor — so the drawing and the quote can never disagree.

Try it free

Not a door app. Not a utility vault app.
MetaModel is the ETO platform where you build your app.

Kestrel Vessel Works

Pressure vessel

ASME VIII-1: shell and head thickness by UG-27 and UG-32, plate rounded up, MAWP back from the plate, flange class, nozzle schedule, weights, drawing and price.

Halvorsen Stainless

Process tank

Working volume in. The shell gauge, jacket, insulation, agitator, manway, CIP and a nozzle schedule checked for interference — weights, drawing and price follow.

Tallgrass Planter Co.

Row-crop planter

Rows and spacing in. The frame goes rigid, pull-type or vertical fold; the row units take their meter, hoppers or bulk fill, cleaners, down force and fertilizer; the wings fold for the road.

Ridgeline Precast

Utility vault

Drag a duct bank onto a wall. The rebar cage re-routes around it; the lifting anchors and the crane class follow the weight.

Calder & Voss

Hydraulic cylinder

Bore, stroke, pressure, mount. Buckling picks the rod from the standard ladder; the mount reconfigures in 3D.

Northfork Framing

Framed building

Studs, gable studs, rafters cut with bird's mouths. A window on a wall and the framing re-cuts around it.

Halden Door Co.

Industrial door

Single or pair, size, gauge, hardware. Hinges follow the height rule, panic bars appear as parts, the price builds from tables.

Built for you

Your first configurator, built for you. Free.

Send us what you have — a description, the spreadsheet you quote from, drawings, your website — and our engineers build it: inputs, rules, 3D, drawing, price. It is yours to keep and change, and it goes live on your site when you say.

  1. 1 Send what you have
  2. 2 We build it
  3. 3 You review, we refine
  4. 4 Live on your site

Rather email it? support@metamodel.app — attach the spreadsheet and anything else.

The more you give us, the closer the first cut. Next we read back what we understood; you confirm or refine before anything is built.

Demo — a fictional company, a real app

Ridgeline Precast's ETO instant-quote app, built on MetaModel in days: configure, reinforce, price, drawing, RFQ — as it would sit on a real precaster's website.

Engineer-to-order, all the way

A precast utility vault — configured, reinforced, quoted. In the browser.

Slide the box. Drag a duct bank onto a wall and slide it where the conduit comes in. The rebar cage re-routes around every opening — hoops round the corners, U-bars through the floor — the lifting anchors and the crane class follow the weight, the drawing re-dimensions, and a delivered-and-set price is one email away. A parts bin and a design catalog ship with the page. Modeled, not programmed.

Open Ridgeline Precast's configurator
The Ridgeline Precast vault configurator: a 3D utility vault with its rebar cage in x-ray, a duct bank dropped on the front wall, the parts bin of knockouts and duct banks on the left, and the design catalog along the bottom.

Four ways to start

Start from a template — or build it your way.

Pick a ready-made calculator and change the numbers, describe what you need and let AI build it, turn an Excel workbook into a live app, or start from a blank page and build it by hand. Every path lands in the same editor — an Excel-like workspace where a formula bar, a rule bar, and a property editor make building from scratch as easy as writing a spreadsheet.

From a template

Pick a ready-made calculator and change the numbers to yours.

From AI

Just describe what you need — the AI Companion builds the model.

From Excel

Turn a workbook — formulas and all — into a live app.

From scratch

Start blank and build it by hand with formulas and rules.

The same editor every path lands in — a formula bar, a rule bar, live 3D with an automated 2D drawing, and a property editor. Click to enlarge.

Calculators too

The same engine does the money side of the sale.

Financing, payback, lease versus buy, cost of ownership: MetaModel also builds the financial and analytical calculators that sit beside an engineered product. Put one in the same project and it reads the configurator's price directly, so the monthly payment moves when your customer changes the size. Or start from a ready-made template. Each one is a real model you can open and edit, not a locked form.

Browse the calculator library →

The starter-template gallery: a strip of ready-made calculators — gym rental, sales tax, compound interest, credit-card payoff, loan comparison, BMI, percentage, home affordability, mortgage, rent vs buy — each with its own colors, charts and layout.

How it works

1

Model it

Formulas you already know, cross-model references, live recalculation. If you can build it in a spreadsheet, you can model it here.

2

Add rules

Rules that create parts, select standard components, place geometry, and check the result. The model reconfigures itself as inputs change.

3

Publish it

One click. Visitors get a live app; developers get an API; AI assistants get a tool. Same model, no code.

Publish once

One model, three surfaces

The same published model is simultaneously all three. No exports, no rebuilds, no drift.

An interactive app

A live page anyone can use — sliders, forms, 3D, drawings. Embeddable in any website with one script tag.

A REST API

POST inputs, get computed outputs — evaluated server-side by the same dependency-tracked engine the page runs.

An MCP tool

Any AI assistant can discover your model, read its schema, and compute real answers with it. No integration project.

Computed, not guessed

Your model, callable by any AI assistant

Add https://www.metamodel.app/api/mcp as a connector and every calculator you've published becomes a tool the assistant can actually use. It discovers the inputs, sends real values, and gets results computed by the same dependency-tracked engine the live page runs. Language models guess at arithmetic. Yours doesn't.

metamodel_list_projects

It finds your calculators.

The assistant sees what's available to compute against.

metamodel_get_schema

It reads the contract.

Every input with its type, defaults and valid range; every output. 3D presentation models are flagged so the assistant knows what's engineering and what's display.

metamodel_compute

It computes for real.

Formulas, lookups and rules evaluated server-side. Numbers come from the engine, not the language model.

True story

An AI assistant exploring the cylinder configurator through these tools noticed the rod-sizing check only guarded one direction. Digging in revealed the real issue: at short strokes, buckling stopped governing and the model could select a rod past its compressive yield. The fix shipped the same day.

Your configurator, inside the assistant your customer already uses. Publish a model and it's reachable from Claude, from an internal agent, from whatever your customers run — no integration project, no SDK, no keys.

The MCP server is open source (github.com/metamodel-app/mcp-server) and published-calculator compute needs no auth. Developer docs →

Embedded in the wild

Real MetaModel apps, living on other pages

Anyone can code an app in months. These were modeled, not programmed — the deal-shopper in under 15 minutes, the full 3D configurator in a day — with spreadsheet-style formulas and rules, no code, AI assistance when you want it. Then one script tag drops them into their host sites.

Consumer

TeeScout — t-shirt deal shopper

Four vendor pricing models race live; drag a fifth in from the parts tray and it arrives already priced.

Industrial

Calder & Voss — cylinder RFQ

Live 3D, a dimensioned drawing, quote capture and an engineering assistant — embedded on a manufacturer's page.

Engineer-to-order

Ridgeline Precast — utility vault configurator

Size the box, drag knockouts and duct banks onto its walls, slide them — the rebar cage re-routes around every opening, the lifting anchors and the crane class follow, the drawing re-dimensions, and a delivered-and-set quote is one email away. A parts bin and a design catalog ship with the page.

Each of these is the same one-line embed — pasted into its host site: 

<script src="https://www.metamodel.app/embed.js" async></script>
<metamodel-embed token="…"></metamodel-embed>

That's the entire integration. Ship an interactive calculator on a client site this afternoon, without a build step, a framework, or a developer.

One tool, from a price comparison to a 3D configurator.

Start

A comparison widget, embedded with one script tag.

Four vendor pricing models race an order live. Modeled in under 15 minutes, dropped into its host page with a single script tag.

TeeScout — t-shirt comparison →

Further up

Real formulas, live recalculation, published to a page.

Loan math with affordability indicators, code-compliant deck sizing from decision tables, five interconnected building models — spreadsheet-class logic as live apps.

Car loan·Deck builder·Building engineer

The ceiling

Engineering rules, standard-part selection and live 3D — same tool, pushed all the way.

Buckling selects the rod, rules reconfigure the mounting in 3D, and the dimensioned drawing follows. CAD outputs files. This outputs an interface.

Hydraulic cylinder·Conveyor section

Same engine, same formulas, same one-line embed. The difference between the first and the last is how much model you wrote.

Build your first model today

Free to build. Buy it for $25 to publish — no subscription.

Try it free See pricing