diff --git a/ui/src/components/config-form-collection-defaults.browser.test.ts b/ui/src/components/config-form-collection-defaults.browser.test.ts
index ecf92a42eae5..81568a94fabe 100644
--- a/ui/src/components/config-form-collection-defaults.browser.test.ts
+++ b/ui/src/components/config-form-collection-defaults.browser.test.ts
@@ -132,6 +132,65 @@ describe("config form collection defaults", () => {
     expect(onPatch).not.toHaveBeenCalled();
   });
 
+  it("conceals sensitive collection defaults and disables restore until revealed", () => {
+    const container = document.createElement("div");
+    const onPatch = vi.fn();
+    const hints = {
+      "settings.profile": { sensitive: true },
+      "settings.tokens": { sensitive: true },
+    };
+
+    render(
+      renderObject(
+        {
+          schema: {
+            type: "object",
+            title: "Profile",
+            default: { apiKey: "default-secret" },
+            properties: { apiKey: { type: "string" } },
+          },
+          value: { apiKey: "authored-secret" },
+          path: ["settings", "profile"],
+          hints,
+          unsupported: new Set(),
+          disabled: false,
+          revealSensitive: false,
+          onPatch,
+        },
+        renderNode,
+      ),
+      container,
+    );
+
+    expect(container.textContent).not.toContain("default-secret");
+    expect(resetButton(container).disabled).toBe(true);
+
+    render(
+      renderArray(
+        {
+          schema: {
+            type: "array",
+            title: "Tokens",
+            items: { type: "string" },
+            default: ["default-token"],
+          },
+          value: ["authored-token"],
+          path: ["settings", "tokens"],
+          hints,
+          unsupported: new Set(),
+          disabled: false,
+          revealSensitive: false,
+          onPatch,
+        },
+        renderNode,
+      ),
+      container,
+    );
+
+    expect(container.textContent).not.toContain("default-token");
+    expect(resetButton(container).disabled).toBe(true);
+  });
+
   it("removes an optional object as one value and keeps inherited children inherited", () => {
     const container = document.createElement("div");
     const onPatch = vi.fn();
diff --git a/ui/src/components/config-form.node.collection.ts b/ui/src/components/config-form.node.collection.ts
index 3072c82b8c5a..0a216441bfec 100644
--- a/ui/src/components/config-form.node.collection.ts
+++ b/ui/src/components/config-form.node.collection.ts
@@ -53,16 +53,30 @@ import { configFieldId, hintForPath, type JsonSchema } from "./config-form.share
 import { renderSettingsEmpty } from "./settings-ui.ts";
 
 const UNSET_ARRAY_SOURCE_IDENTITY = Symbol("unset-array-source");
+const UNSET_MAP_SOURCE_IDENTITY = Symbol("unset-map-source");
+
+function collectionDefaultPresentation(params: ConfigNodeRenderParams, effectiveValue: unknown) {
+  const redacted = getSensitiveRenderState({
+    path: params.path,
+    value: effectiveValue,
+    hints: params.hints,
+    revealSensitive: params.revealSensitive ?? false,
+    isSensitivePathRevealed: params.isSensitivePathRevealed,
+  }).isRedacted;
+  return {
+    description: redacted ? nothing : renderSchemaDefaultDescription(params.schema, params.value),
+    action: renderRestoreDefaultButton({
+      ...params,
+      disabled: params.disabled || redacted,
+    }),
+  };
+}
 
 function openCollectionDraft(event: Event, draftId: string): void {
   const block = (event.currentTarget as HTMLElement).closest(".cfg-block");
   const draft = Array.from(block?.children ?? []).find((child) => child.id === draftId);
-  const openDraft = (draft as Partial<ConfigFormCollectionDraft> | undefined)?.openDraft;
-  if (typeof openDraft === "function") {
-    openDraft.call(draft);
-  }
+  (draft as Partial<ConfigFormCollectionDraft> | undefined)?.openDraft?.call(draft);
 }
-const UNSET_MAP_SOURCE_IDENTITY = Symbol("unset-map-source");
 
 export function renderObject(
   params: ConfigNodeRenderParams,
@@ -97,6 +111,7 @@ export function renderObject(
     fallback && typeof fallback === "object" && !Array.isArray(fallback)
       ? (fallback as Record<string, unknown>)
       : {};
+  const defaultPresentation = collectionDefaultPresentation(params, fallback);
   const entries = objectPropertyKeys(schema)
     .map((key) => [key, objectPropertySchema(schema, key)] as const)
     .filter((entry): entry is readonly [string, ConfigNodeRenderParams["schema"]] =>
@@ -206,14 +221,12 @@ export function renderObject(
           <span class="settings-row__title">${label}</span>
           ${help ? html`<span class="settings-row__desc">${help}</span>` : nothing}
           ${schema.default !== undefined
-            ? html`<span class="settings-row__desc"
-                >${renderSchemaDefaultDescription(schema, value)}</span
-              >`
+            ? html`<span class="settings-row__desc">${defaultPresentation.description}</span>`
             : nothing}
           ${renderTags(tags)}
         </div>
         <div class="settings-row__control">
-          ${renderRestoreDefaultButton(params)}
+          ${defaultPresentation.action}
           <span class="settings-row__chevron cfg-object__chevron">${icons.chevronDown}</span>
         </div>
       </summary>
@@ -271,6 +284,7 @@ export function renderArray(
     : Array.isArray(schema.default)
       ? schema.default
       : UNSET_ARRAY_SOURCE_IDENTITY;
+  const defaultPresentation = collectionDefaultPresentation(params, arrayValue);
   const rowIdentities = rowIdentitiesForArray(arrayValue);
   const {
     minItems: minimumItems,
@@ -352,9 +366,7 @@ export function renderArray(
           ${showLabel ? html`<span class="settings-row__title">${label}</span>` : nothing}
           ${showLabel && help ? html`<span class="settings-row__desc">${help}</span>` : nothing}
           ${showLabel && schema.default !== undefined
-            ? html`<span class="settings-row__desc"
-                >${renderSchemaDefaultDescription(schema, value)}</span
-              >`
+            ? html`<span class="settings-row__desc">${defaultPresentation.description}</span>`
             : nothing}
           ${renderTags(tags)}
         </div>
@@ -364,7 +376,7 @@ export function renderArray(
               count: String(arrayValue.length),
             })}</span
           >
-          ${renderRestoreDefaultButton(params)}
+          ${defaultPresentation.action}
           <button
             type="button"
             class="btn btn--sm"