Is there an official accessibility magnification API for XR?

Is there a supported Horizon OS, OpenXR or Meta XR API for an accessibility app to magnify or transform the rendered view of another XR experience?

Frozen-image magnification and passthrough magnification help with some tasks, but some people with low vision need continuous magnification while using an XR experience. Is there a recommended architecture or an official compositor API for this? Is accessibility magnification on the roadmap, and what is the right channel for a feature request?

I’m looking for a supported developer path.