diff --git a/packages/geo/src/stac/stac.attribution.ts b/packages/geo/src/stac/stac.attribution.ts
index 5d2e61808..434296bcc 100644
--- a/packages/geo/src/stac/stac.attribution.ts
+++ b/packages/geo/src/stac/stac.attribution.ts
@@ -4,8 +4,25 @@ import { StacCatalog, StacCollection, StacItem } from './index.js';
  * A Single File STAC compliant collection with zoom and priority for calculating attribution of an extent
  */
 export type AttributionCollection = StacCollection<{
+  /**
+   * Category of the layer
+   *
+   * @example "Urban Aerial Photos"
+   */
   'linz:category'?: string;
+
+  /**
+   * Zoom levels that the layer is visit
+   */
   'linz:zoom': { min: number; max: number };
+
+  /**
+   * Priority order for the layer
+   *
+   * The higher the number the higher the priority
+   *
+   * @example [1077]
+   */
   'linz:priority': [number];
 }>;
 
@@ -13,10 +30,33 @@ export type AttributionCollection = StacCollection<{
  * A Single File STAC compliant feature for calculating attribution of an extent
  */
 export type AttributionItem = StacItem<{
+  /**
+   * Human friendly title of the layer
+   *
+   * @example "Whanganui 0.075m Urban Aerial Photos (2017)"
+   */
   title: string;
+
+  /**
+   * Category of the layer
+   *
+   * @example "Urban Aerial Photos"
+   */
   category?: string;
+
+  /**
+   * datetime is null as per STAC requirement when {@link start_datetime} and {@link end_datetime} are set
+   */
   datetime?: null;
+
+  /**
+   * datetime of when the layer started being captured
+   */
   start_datetime?: string;
+
+  /**
+   * datetime of when the layer stopped being captured
+   */
   end_datetime?: string;
 }>;
 
diff --git a/packages/lambda-tiler/src/routes/attribution.ts b/packages/lambda-tiler/src/routes/attribution.ts
index 3aa2f3219..cd866bcd9 100644
--- a/packages/lambda-tiler/src/routes/attribution.ts
+++ b/packages/lambda-tiler/src/routes/attribution.ts
@@ -99,10 +99,13 @@ async function tileSetAttribution(
   for (const layer of tileSet.layers) {
     const imgId = layer[proj.epsg.code];
     if (imgId == null) continue;
+
     const im = imagery.get(imgId);
     if (im == null) continue;
+
     const title = im.title;
     const years = extractYearRangeFromTitle(im.title) ?? extractYearRangeFromName(im.name);
+
     if (years == null) continue;
     const interval = yearRangeToInterval(years);