diff --git a/README.md b/README.md
index 6df96fe..a61c1e9 100644
--- a/README.md
+++ b/README.md
@@ -1317,6 +1317,9 @@ POST   /api/v1/{tipo}/{id}/return        devolver con motivo {note}
 POST   /api/v1/{tipo}/{id}/publish       aprobar: ya, o programado con {at}
 POST   /api/v1/{tipo}/{id}/unpublish
 POST   /api/v1/{tipo}/{id}/preview       enlaces de vista previa por idioma
+GET    /api/v1/health                    la pantalla de salud del sitio
+GET    /api/v1/translations/pending      lo que falta traducir (missing) o se quedó
+                                         atrás (stale); filtros: locale, type, published
 ```
 
 Lo mismo que los botones del panel, con las mismas reglas: pedir revisión es
diff --git a/app/Http/Controllers/Api/V1/HealthController.php b/app/Http/Controllers/Api/V1/HealthController.php
new file mode 100644
index 0000000..8f831c8
--- /dev/null
+++ b/app/Http/Controllers/Api/V1/HealthController.php
@@ -0,0 +1,129 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Http\Controllers\Api\V1;
+
+use App\Http\Controllers\Controller;
+use App\Models\Call;
+use App\Models\Page;
+use App\Models\Project;
+use App\Models\Service;
+use App\Support\AdminContent;
+use App\Support\ContentTypes;
+use App\Support\Health\Finding;
+use App\Support\Health\HealthReport;
+use App\Support\TranslationFreshness;
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Http\JsonResponse;
+use Illuminate\Http\Request;
+use Illuminate\Validation\Rule;
+
+/**
+ * What is wrong with the site, and what is left to translate — the panel's
+ * health screen, for a client that cannot open it.
+ */
+class HealthController extends Controller
+{
+    /**
+     * The kinds of content written in several languages and checked for it.
+     *
+     * @var array<int, class-string<Model>>
+     */
+    protected const TRANSLATED = [Page::class, Project::class, Service::class, Call::class];
+
+    /**
+     * Every check the caller may see, problems first. A check behind a
+     * permission they lack is left out, as on the panel.
+     */
+    public function index(Request $request, HealthReport $report): JsonResponse
+    {
+        // Who may open the panel's screen; each check guards itself further.
+        $this->authorize('panel.access');
+
+        $findings = $report->runFor($request->user());
+
+        return response()->json([
+            'data' => $findings->map(fn (Finding $finding) => [
+                'key' => $finding->key,
+                'severity' => $finding->severity->value,
+                'count' => $finding->count,
+                'title' => $finding->title(),
+                'description' => $finding->description(),
+                'samples' => $finding->samples,
+                'panel_url' => $finding->url,
+            ])->values(),
+            'meta' => [
+                'problems' => $findings->filter(fn (Finding $f) => $f->severity->isProblem())->count(),
+                'checked_at' => now()->toIso8601String(),
+            ],
+        ]);
+    }
+
+    /**
+     * Records with a language still to write (`missing`) or left behind by the
+     * one it was translated from (`stale`, with since when).
+     *
+     * Filters: locale (only what that language lacks), type, published (only
+     * what is on the site — open, for calls).
+     */
+    public function translations(Request $request): JsonResponse
+    {
+        $locales = array_keys((array) config('locales.supported'));
+
+        $request->validate([
+            'locale' => ['sometimes', Rule::in($locales)],
+            'type' => ['sometimes', Rule::in(['pages', 'projects', 'services', 'calls'])],
+            'published' => ['sometimes', 'boolean'],
+        ]);
+
+        $wanted = $request->input('locale');
+        $items = collect();
+
+        foreach (self::TRANSLATED as $model) {
+            $type = AdminContent::nameOf(new $model);
+
+            if ($request->filled('type') && $request->input('type') !== $type) {
+                continue;
+            }
+
+            if ($request->user()->cannot('viewAny', $model)) {
+                continue;
+            }
+
+            $model::query()
+                ->when($request->boolean('published'), fn ($q) => $model === Call::class ? $q->open() : $q->published())
+                ->with('revisions')
+                ->get()
+                ->each(function (Model $record) use ($locales, $wanted, $type, $items): void {
+                    $missing = array_values(array_filter(
+                        $locales,
+                        fn (string $locale) => blank($record->getTranslation('title', $locale, false)),
+                    ));
+
+                    $stale = collect(TranslationFreshness::for($record))
+                        ->map(fn ($since) => $since->toIso8601String())
+                        ->all();
+
+                    if ($wanted !== null) {
+                        $missing = array_values(array_intersect($missing, [$wanted]));
+                        $stale = array_intersect_key($stale, [$wanted => true]);
+                    }
+
+                    if ($missing === [] && $stale === []) {
+                        return;
+                    }
+
+                    $items->push([
+                        'type' => $type,
+                        'id' => $record->getKey(),
+                        'title' => ContentTypes::title($record),
+                        'missing' => $missing,
+                        'stale' => (object) $stale,
+                    ]);
+                });
+        }
+
+        return response()->json(['data' => $items->values()]);
+    }
+}
diff --git a/public/openapi.yaml b/public/openapi.yaml
index 778a16c..d9fe6a1 100644
--- a/public/openapi.yaml
+++ b/public/openapi.yaml
@@ -134,6 +134,8 @@ tags:
     description: Who changed what and when, and undoing a change
   - name: Reviews
     description: Review, publication and preview links
+  - name: Health
+    description: What is wrong with the site, and what is left to translate
   - name: Users
     description: Local user administration
   - name: Media
@@ -3527,6 +3529,66 @@ paths:
                   data: { $ref: "#/components/schemas/PreviewLinks" }
         "403": { $ref: "#/components/responses/Forbidden" }
 
+  /v1/health:
+    get:
+      tags: [Health]
+      summary: Site health
+      description: |
+        The panel's health screen: every check the caller may see, problems
+        first — broken images, missing slugs, stale translations, unanswered
+        submissions… A check behind a permission the caller lacks is left out.
+      responses:
+        "200":
+          description: The findings
+          content:
+            application/json:
+              schema:
+                type: object
+                properties:
+                  data:
+                    type: array
+                    items: { $ref: "#/components/schemas/HealthFinding" }
+                  meta:
+                    type: object
+                    properties:
+                      problems: { type: integer }
+                      checked_at: { type: string, format: date-time }
+        "403": { $ref: "#/components/responses/Forbidden" }
+
+  /v1/translations/pending:
+    get:
+      tags: [Health]
+      summary: What is left to translate
+      description: |
+        Pages, projects, services and calls with a language still to write
+        (`missing`) or left behind by the one it was translated from (`stale`,
+        with since when). Unpaginated.
+      parameters:
+        - name: locale
+          in: query
+          description: "Only what this language lacks."
+          schema: { type: string }
+        - name: type
+          in: query
+          description: "`pages`, `projects`, `services` or `calls`."
+          schema: { type: string }
+        - name: published
+          in: query
+          description: "Only what is on the site \u2014 open, for calls."
+          schema: { type: boolean }
+      responses:
+        "200":
+          description: The records
+          content:
+            application/json:
+              schema:
+                type: object
+                properties:
+                  data:
+                    type: array
+                    items: { $ref: "#/components/schemas/PendingTranslation" }
+        "422": { $ref: "#/components/responses/ValidationError" }
+
   /v1/media:
     get:
       tags: [Media]
@@ -5277,6 +5339,26 @@ components:
         links: { type: object, additionalProperties: { type: string, format: uri }, description: Language → link. }
         expires_at: { type: string, format: date-time }
 
+    HealthFinding:
+      type: object
+      properties:
+        key: { type: string, example: missing-translations }
+        severity: { type: string, enum: [ok, warning, error] }
+        count: { type: integer }
+        title: { type: string }
+        description: { type: string }
+        samples: { type: array, items: { type: string }, description: Up to three examples. }
+        panel_url: { type: string, nullable: true, description: Where to fix it in the panel. }
+
+    PendingTranslation:
+      type: object
+      properties:
+        type: { type: string, enum: [pages, projects, services, calls] }
+        id: { type: integer }
+        title: { type: string }
+        missing: { type: array, items: { type: string }, description: Languages with nothing written. }
+        stale: { type: object, additionalProperties: { type: string, format: date-time }, description: Language → since when it has been behind. }
+
     MediaFor:
       type: string
       enum: [pages, technologies, projects, members, clients, testimonials]
diff --git a/routes/api.php b/routes/api.php
index e600e9e..7800d53 100644
--- a/routes/api.php
+++ b/routes/api.php
@@ -14,6 +14,7 @@ use App\Http\Controllers\Api\V1\ApplicationController as AdminApplicationControl
 use App\Http\Controllers\Api\V1\CallController;
 use App\Http\Controllers\Api\V1\CategoryController;
 use App\Http\Controllers\Api\V1\ClientController;
+use App\Http\Controllers\Api\V1\HealthController;
 use App\Http\Controllers\Api\V1\MaintenanceController;
 use App\Http\Controllers\Api\V1\MeController;
 use App\Http\Controllers\Api\V1\MediaController;
@@ -243,6 +244,10 @@ Route::prefix('v1')->name('api.v1.')->group(function () {
 
         Route::get('reviews', [ReviewController::class, 'queue'])->name('reviews.queue');
 
+        // The panel's health screen, and what is left to translate.
+        Route::get('health', [HealthController::class, 'index'])->name('health');
+        Route::get('translations/pending', [HealthController::class, 'translations'])->name('translations.pending');
+
         foreach (array_keys(AdminContent::REVIEWABLE) as $resource) {
             $parameter = AdminContent::parameter($resource);
 
diff --git a/tests/Feature/Api/HealthApiTest.php b/tests/Feature/Api/HealthApiTest.php
new file mode 100644
index 0000000..22962f3
--- /dev/null
+++ b/tests/Feature/Api/HealthApiTest.php
@@ -0,0 +1,97 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Tests\Feature\Api;
+
+use App\Models\Page;
+use App\Models\User;
+use Database\Seeders\RolePermissionSeeder;
+use Illuminate\Foundation\Testing\RefreshDatabase;
+use PHPUnit\Framework\Attributes\Test;
+use Tests\FakesPireon;
+use Tests\TestCase;
+
+/**
+ * The site's health and what is left to translate, through the admin API.
+ */
+class HealthApiTest extends TestCase
+{
+    use FakesPireon, RefreshDatabase;
+
+    protected function setUp(): void
+    {
+        parent::setUp();
+
+        $this->seed(RolePermissionSeeder::class);
+    }
+
+    protected function actingWithRole(string $role): User
+    {
+        $user = User::factory()->create();
+        $user->syncRoles([$role]);
+
+        $this->withHeaders($this->apiHeadersFor($user));
+
+        return $user;
+    }
+
+    #[Test]
+    public function the_health_report_lists_problems_first(): void
+    {
+        $this->actingWithRole('editor');
+
+        // Published with no Catalan title: one missing translation.
+        Page::factory()->published()->create([
+            'title' => ['es' => 'Hola', 'en' => 'Hello'],
+            'slug' => ['es' => 'hola', 'en' => 'hello'],
+        ]);
+
+        $response = $this->getJson('/api/v1/health')->assertOk();
+
+        $finding = collect($response->json('data'))->firstWhere('key', 'missing-translations');
+
+        $this->assertSame('warning', $finding['severity']);
+        $this->assertSame(1, $finding['count']);
+        $this->assertNotSame('ok', $response->json('data.0.severity'));
+        $this->assertGreaterThanOrEqual(1, $response->json('meta.problems'));
+    }
+
+    #[Test]
+    public function a_check_behind_a_permission_is_left_out(): void
+    {
+        $this->actingWithRole('viewer');
+
+        $keys = collect($this->getJson('/api/v1/health')->assertOk()->json('data'))->pluck('key');
+
+        // Strangers' submissions are not a viewer's to see, not even counted.
+        $this->assertNotContains('unanswered-submissions', $keys);
+    }
+
+    #[Test]
+    public function pending_translations_say_which_languages(): void
+    {
+        $this->actingWithRole('editor');
+
+        $page = Page::factory()->draft()->create([
+            'title' => ['es' => 'Solo en castellano'],
+            'slug' => ['es' => 'solo'],
+        ]);
+        Page::factory()->draft()->create([
+            'title' => ['es' => 'Completa', 'en' => 'Complete', 'ca' => 'Completa'],
+            'slug' => ['es' => 'completa', 'en' => 'complete', 'ca' => 'completa'],
+        ]);
+
+        $this->getJson('/api/v1/translations/pending?type=pages')
+            ->assertOk()
+            ->assertJsonCount(1, 'data')
+            ->assertJsonPath('data.0.id', $page->id)
+            ->assertJsonPath('data.0.missing', ['en', 'ca']);
+
+        $this->getJson('/api/v1/translations/pending?locale=ca')
+            ->assertJsonPath('data.0.missing', ['ca']);
+
+        // Drafts only, so nothing is on the site yet.
+        $this->getJson('/api/v1/translations/pending?published=1')->assertJsonCount(0, 'data');
+    }
+}