Build Plugins for Hemiola

Your Controller. Your Rules. Your Plugin.

Hemiola’s device plugin framework is open, declarative, and JSON-driven. If your MIDI controller has a MIDI implementation chart, you can turn it into a fully native configuration interface — rendered inside the app with real-time parameter feedback, built-in presets, and zero lines of compiled code. Whether you are a hardware tinkerer, an instrument designer, or just a musician who wants better control over a favourite device, the plugin framework makes it possible.

AI-assisted authoring is a first-class workflow: feed a MIDI implementation chart to an LLM with the provided prompt template and get a working draft in minutes. Validate, refine, contribute — and your plugin ships as a seamless in-app update to every Hemiola user worldwide.

Start with the Authoring Guide for a step-by-step walkthrough, explore the JSON Reference for every field and control type, or jump straight to the Examples and adapt a template to your device. Contributions are welcome — read the Contribution Workflow to learn how to submit your plugin to the community.