Brand Checker

Compare a design against the user's brand kit and report, point by point, where it follows the brand and where it drifts. This is a specialised, brand-aware version of canva-design-feedback: same read-only "read the design, then critique" core, but the rubric is the brand kit. It never edits the design.

The brand-kit data gap — read this first

Canva:list-brand-kits is documented to return brand kit IDs, names, and thumbnails. It may NOT return the machine-readable palette (hex values) and font families. Your approach depends on what you actually get back:

• If the kit exposes colors/fonts → use those exact hex codes and font names as the rubric (precise check).
• If it only exposes a thumbnail/name → you cannot do an exact hex/font match. Fall back to a visual comparison against the kit thumbnail, and ASK the user to paste their brand colors (hex) and fonts so you can check precisely. Be explicit that, without those, the color/font findings are approximate.

Never invent brand colors or fonts. If you don't have the real values, say so.

Reading the design's actual colors and fonts

Canva:get-design-content returns text only — not colors or fonts.

• A read-only editing transaction (Canva:start-editing-transaction → inspect → Canva:cancel-editing-transaction, always cancel) reliably gives element text, positions, and sizes.
• Colors and fonts are NOT reliably exposed by the transaction — tested: it often returns only text + position + dimension, with no color/font attributes. So the thumbnail is your primary evidence for color and typography. Use any style data the payload happens to include, but never assert a design's hex or font as fact unless it was actually in the payload.