diff --git a/.changeset/record-alert-cta-label-i18n-4998.md b/.changeset/record-alert-cta-label-i18n-4998.md
new file mode 100644
index 0000000000..c42fa2e98f
--- /dev/null
+++ b/.changeset/record-alert-cta-label-i18n-4998.md
@@ -0,0 +1,20 @@
+---
+'@object-ui/plugin-detail': patch
+---
+
+`record:alert`'s renderer-local `RecordAlertProps` CTA slot (`action.label`) is
+widened to `string | I18nLabel` in both copies (`properties.*` and the flat
+compat mirror) in `packages/plugin-detail/src/renderers/record-alert.tsx`.
+
+The renderer already resolves `action.label` through the same inline-locale-map
+`pickLocalized` call as `title` / `body` (`const ctaLabel =
+pickLocalized(props.action?.label, language)`), so a bare `string` declaration
+was narrower than the renderer's own runtime behavior — the same
+declaration-narrower-than-the-renderer contradiction objectui#4970 fixed for
+`title` / `body` one level up in the same interface (objectui#4998).
+
+Type-only: the block's published authoring surface still declares `action` as
+a bare `object` with the member shape in prose only
+(`plugin-detail/src/index.tsx`), so there is no manifest arm to align yet —
+that half stays parked on the `ComponentInput` member-shape question (PR
+#3795) and is out of scope here.
diff --git a/packages/plugin-detail/src/renderers/__tests__/record-alert.test.tsx b/packages/plugin-detail/src/renderers/__tests__/record-alert.test.tsx
index 5c0e85f283..3b73b71e05 100644
--- a/packages/plugin-detail/src/renderers/__tests__/record-alert.test.tsx
+++ b/packages/plugin-detail/src/renderers/__tests__/record-alert.test.tsx
@@ -92,6 +92,10 @@ import { RecordAlertRenderer } from '../record-alert';
 // the ambient predicate scope pinned at the bottom of this file is the shipped
 // one, not a stand-in for it.
 import { PredicateScopeProvider } from '@object-ui/react';
+// Real I18nProvider (not mocked) — pins the active language so the locale-map
+// case below (objectui#4998) resolves deterministically instead of riding
+// whatever language another test file left on the global i18next singleton.
+import { I18nProvider } from '@object-ui/i18n';
 
 const RECORD_DEFAULTS = {
   recordCtx: {
@@ -193,6 +197,35 @@ describe('RecordAlertRenderer', () => {
     expect(screen.getByTestId('alert-cta').textContent).toBe('Send again');
   });
 
+  // objectui#4998 — `action.label` accepts the inline locale map, not just a
+  // plain string. The renderer already resolved one before this pin existed
+  // (`const ctaLabel = pickLocalized(props.action?.label, language)`), so a
+  // plain-string CTA label is green whether or not the local `RecordAlertProps`
+  // type admits a map — that's the `label: 'Send again'` case just above, and
+  // it cannot tell the widened declaration apart from the narrow one it
+  // replaced. This case can: a bare `label?: string` refused a locale-map
+  // value at the TYPE level even though `pickLocalized` (an `unknown` input)
+  // already resolved it correctly at runtime, exactly the `title` / `body`
+  // contradiction objectui#4970 fixed one level up in the same interface.
+  it('resolves an inline locale-map action.label to the active-language string (objectui#4998)', () => {
+    render(
+      <I18nProvider config={{ defaultLanguage: 'en', detectBrowserLanguage: false }}>
+        <RecordAlertRenderer
+          schema={{
+            properties: {
+              title: 'X',
+              action: {
+                actionName: 'resend_verification_email',
+                label: { en: 'Send again', 'zh-CN': '再次发送' },
+              },
+            },
+          }}
+        />
+      </I18nProvider>,
+    );
+    expect(screen.getByTestId('alert-cta').textContent).toBe('Send again');
+  });
+
   it('does NOT render a CTA when the action name fails to resolve in metadata', () => {
     render(
       <RecordAlertRenderer
diff --git a/packages/plugin-detail/src/renderers/record-alert.tsx b/packages/plugin-detail/src/renderers/record-alert.tsx
index fdbce2bd82..f3dfe634cc 100644
--- a/packages/plugin-detail/src/renderers/record-alert.tsx
+++ b/packages/plugin-detail/src/renderers/record-alert.tsx
@@ -77,10 +77,15 @@ type Severity = 'info' | 'warning' | 'error' | 'success';
  * the renderer and this block's own published surface — the
  * declaration-narrower-than-the-renderer family of objectui#4581.
  *
- * The CTA's `action.label` below is the same slot one level down and is
- * deliberately NOT widened here (objectui#4998): its published surface declares
- * `action` as a bare `object` with the member shape in prose only, so the arms it
- * would be aligned against do not exist yet.
+ * The CTA's `action.label` below is the same slot one level down, widened here
+ * (objectui#4998) to match: it is read through the same `pickLocalized` call as
+ * `title` / `body` (`const ctaLabel = pickLocalized(props.action?.label, language)`
+ * further down), so a declaration of bare `string` was narrower than the
+ * renderer's own runtime behaviour, exactly as `title` / `body` were before
+ * objectui#4970. This widening is TYPE-only: the block's published surface still
+ * declares `action` as a bare `object` with the member shape in prose
+ * (`plugin-detail/src/index.tsx`), so there is no manifest arm to align — that
+ * half stays parked on the `ComponentInput` member-shape question (PR #3795).
  */
 interface RecordAlertProps {
   schema?: {
@@ -90,7 +95,7 @@ interface RecordAlertProps {
       body?: string | I18nLabel;
       visible?: any;
       icon?: string;
-      action?: { actionName: string; label?: string; variant?: string };
+      action?: { actionName: string; label?: string | I18nLabel; variant?: string };
       dismissible?: boolean;
       dismissKey?: string;
     };
@@ -100,7 +105,7 @@ interface RecordAlertProps {
     body?: string | I18nLabel;
     visible?: any;
     icon?: string;
-    action?: { actionName: string; label?: string; variant?: string };
+    action?: { actionName: string; label?: string | I18nLabel; variant?: string };
     dismissible?: boolean;
     dismissKey?: string;
     className?: string;