GolemUI – Declarative Form Engine
We're a team of three friends who have been working with forms and Open Source for a decade, and we joined forces together to create something where we can apply all of our experience. We recently released GolemUI, an Open Source library to generate forms dynamically from JSON definitions, with a typed layer to simplify authoring. This library has a lot to offer. These are the main characteristics: 1. A JSON engine. The form is governed by a JSON definition that you can store in a DB, version, diff, or generate it with LLMs as a validated JSON. 2. We provide also 28 headless components (and…
GolemUI – Declarative Form Engine launched on July 1, 2026 with 53 votes, #603 of 24,623 launches that month and more than 95% of that year's launches.
In plain words
GolemUI is an open-source library that generates forms dynamically from JSON definitions, allowing developers to store, version, and manage form structures in databases or generate them with LLMs. It provides 28 headless components styled with CSS variables and supports integration with Material, Shoelace, or custom components. The library includes a typed authoring layer for writing forms programmatically, which automatically produces JSON, eliminating manual definition writing. Built by three developers with a decade of forms and open-source experience, GolemUI is designed for developers who need flexible, maintainable form solutions.
written from the facts on this page · September 2026
From the sources
The Form Engine Built for Agents. Your agent writes the form, the skill teaches it the API, the MCP validates every definition, and the engine renders it in any framework.
A real session, condensed: agent + skill + MCP build the form ; the engine renders it. No training data required: knowledge ships with the library. Your agent has never seen GolemUI? Doesn't matter, the bundled skill teaches it, the MCP server does the work, and the schema keeps it honest. A compile-verified API reference and authoring rules, installed into the agent. This is how it knows the library. The agent writes the typed definition: less surface to emit, nothing to get creative with. The MCP type-checks the code against the real types ( json_validate_form_definition for JSON definitions). An invalid definition never ships. npx skills add golemui/golemui claude mcp add golemui -- npx…from golemui.com
In the maker’s words, at launch
We're a team of three friends who have been working with forms and Open Source for a decade, and we joined forces together to create something where we can apply all of our experience. We recently released GolemUI, an Open Source library to generate forms dynamically from JSON definitions, with a typed layer to…
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