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Elementor Ultra is an open-source stack for building Elementor V4 sites as code. You (or an AI agent) write small typed JSX components, a compiler turns them into native Elementor V4 atomic JSON, and a one-shot deployer writes them to WordPress over REST. The result is a normal Elementor page: fully editable in the Elementor editor, with no lock-in and no proprietary runtime on the site. It was built agent-first. Typed props fail at build time, an authoritative server-side validator rejects bad trees before they save, and verification gates replace hand-written browser scripts. Humans get the same ergonomics; the design center is the agent.
Elementor Ultra is MIT-licensed open source from the same team, separate from the WPOS product documented in the other tabs. It is not affiliated with or endorsed by Elementor Ltd; “Elementor” is their trademark, and this is an independent toolchain that targets their page format.

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The architecture in one pass

  1. JSX components. Pages live in an fs-project: pages/*.page.jsx, shared components/, design tokens in theme.mjs. See Projects.
  2. Compiler. exjsx build compiles JSX to Elementor V4 atomic JSON, dedupes repeated styles into shared global classes, and writes one reviewable bundle file. Every change is a git diff, not a 4,000-line JSON blob.
  3. REST deploy. exjsx deploy writes variables, classes, and pages to the site over REST, idempotently, with drift protection for hand-edited pages. See Deploy.
  4. Native Elementor V4 pages. What lands on the site is standard atomic Elementor content. Open it in the editor, hand it to a client, or keep iterating from source.
A site built entirely by an AI agent with this stack, from a written brief to a verified deploy (scroll-through of the live result):

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The four packages

A companion WordPress plugin, elementor-ultra-mcp, ships bundled inside the playground snapshot (and as a zip for real sites). It provides the REST seams the deployer and gates talk to, plus CSS lifecycle guards that keep agent deploys and human editor sessions from destroying each other’s work. See The companion plugin.

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Who it is for

  • AI agents that need a real API surface for Elementor instead of a blank file: typed components, build-time errors, one-call verification gates, and briefs designed for one-shot builds.
  • Developers and agencies who want Elementor sites in version control: reviewable diffs, CI-friendly linting, idempotent deploys, and a local environment that boots in seconds.

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Start here

Quickstart

Local WordPress to a deployed, verified page in a few minutes.

Install

The package matrix, requirements, and using a real WordPress site.

Projects

The fs-project layout: pages, components, theme tokens.

Styling

The sx vocabulary, the Tailwind subset, and the raw CSS escape hatch.

Verify

The post-deploy gate: structural matrix, interaction tests, doctor.

API card

The complete one-page authoring reference.