Sprezzature

👁️ Look at the figure before you ship it

You can proofread a sentence by reading it back. You can't do that with a chart: whether it's right lives in the pixels, not the code. So the Ralph Eyeball Loop takes whatever you made (a Vega chart, a TikZ figure, a Mermaid diagram, a whole web page) and renders it to an image with a deterministic tool, no model involved. Then something actually looks at it: by default the agent itself, the same one that wrote the code, or, fully offline, an optional local vision model. It catches what a code check never will: a label cut off at the edge, a legend that slid off the canvas, two nodes sitting on top of each other, colors that vanish for a colorblind reader. Fix the source, render again, look again. It's a prescribed review loop, not an autonomous critic. Everyone else aims this at web pages. We aim it at charts and diagrams too.

How the Ralph Eyeball Loop works →

📐 The figure is a real SVG, not a picture

A figure ships as carefully written scalable vector graphics (SVG). The generators emit the markup directly, each with a matching viewBox, so the graphic scales to any size without a blurry pixel and the text stays selectable. Vega-Lite is one handy way to describe a chart, but the Vega JavaScript Object Notation (JSON) is not what you ship, and the Portable Network Graphics (PNG) is only an export for places that can't take vector art. The SVG is the deliverable.