diff --git a/app/Api/V1/Requests/DateRangeRequest.php b/app/Api/V1/Requests/DateRangeRequest.php
index cb912f5293..bfefb467a6 100644
--- a/app/Api/V1/Requests/DateRangeRequest.php
+++ b/app/Api/V1/Requests/DateRangeRequest.php
@@ -39,7 +39,7 @@ class DateRangeRequest extends ApiRequest
     {
         $validator->after(
             function (Validator $validator): void {
-                if (!$validator->valid()) {
+                if ($validator->failed()) {
                     // set null values
                     $this->attributes->set('start', null);
                     $this->attributes->set('end', null);
diff --git a/app/Api/V1/Requests/DateRequest.php b/app/Api/V1/Requests/DateRequest.php
index db74d86098..b73970786d 100644
--- a/app/Api/V1/Requests/DateRequest.php
+++ b/app/Api/V1/Requests/DateRequest.php
@@ -39,8 +39,7 @@ class DateRequest extends ApiRequest
     {
         $validator->after(
             function (Validator $validator): void {
-                $this->attributes->set('date', null);
-                if (!$validator->valid()) {
+                if ($validator->failed()) {
                     return;
                 }
                 $date  = $this->getCarbonDate('date')?->endOfDay();
diff --git a/app/Api/V1/Requests/Models/Account/AccountTypeApiRequest.php b/app/Api/V1/Requests/Models/Account/AccountTypeApiRequest.php
index e24f6da655..e1e6bc686f 100644
--- a/app/Api/V1/Requests/Models/Account/AccountTypeApiRequest.php
+++ b/app/Api/V1/Requests/Models/Account/AccountTypeApiRequest.php
@@ -42,7 +42,7 @@ class AccountTypeApiRequest extends ApiRequest
     {
         $validator->after(
             function (Validator $validator): void {
-                if (!$validator->valid()) {
+                if ($validator->failed()) {
                     return;
                 }
 
diff --git a/app/Api/V1/Requests/PaginationRequest.php b/app/Api/V1/Requests/PaginationRequest.php
index 8fe7cf351f..9b080007dc 100644
--- a/app/Api/V1/Requests/PaginationRequest.php
+++ b/app/Api/V1/Requests/PaginationRequest.php
@@ -57,7 +57,7 @@ class PaginationRequest extends ApiRequest
     {
         $validator->after(
             function (Validator $validator): void {
-                if (!$validator->valid()) {
+                if ($validator->failed()) {
                     return;
                 }
 
diff --git a/database/factories/AccountFactory.php b/database/factories/AccountFactory.php
new file mode 100644
index 0000000000..dd2eb4ac04
--- /dev/null
+++ b/database/factories/AccountFactory.php
@@ -0,0 +1,24 @@
+<?php
+declare(strict_types=1);
+
+namespace Database\Factories;
+
+use FireflyIII\Enums\AccountTypeEnum;
+use FireflyIII\Models\AccountType;
+use Illuminate\Database\Eloquent\Factories\Factory;
+
+class AccountFactory extends Factory
+{
+    public function definition(): array
+    {
+        return [
+            'name' => $this->faker->name(),
+            'active' => true,
+        ];
+    }
+
+    public function withType(AccountTypeEnum $type): static
+    {
+        return $this->for(AccountType::where('type', $type->value)->first());
+    }
+}
diff --git a/tests/integration/Api/Models/Account/ShowControllerTest.php b/tests/integration/Api/Models/Account/ShowControllerTest.php
new file mode 100644
index 0000000000..6975558388
--- /dev/null
+++ b/tests/integration/Api/Models/Account/ShowControllerTest.php
@@ -0,0 +1,90 @@
+<?php
+
+
+/*
+ * AccountControllerTest.php
+ * Copyright (c) 2025 james@firefly-iii.org
+ *
+ * This file is part of Firefly III (https://github.com/firefly-iii).
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+declare(strict_types=1);
+
+namespace Tests\integration\Api\Models\Account;
+
+use FireflyIII\Enums\AccountTypeEnum;
+use FireflyIII\Models\Account;
+use FireflyIII\User;
+use Override;
+use Illuminate\Foundation\Testing\RefreshDatabase;
+use Tests\integration\TestCase;
+
+/**
+ * @internal
+ *
+ * @covers \FireflyIII\Api\V1\Controllers\Models\Account\ShowController
+ */
+final class ShowControllerTest extends TestCase
+{
+    use RefreshDatabase;
+    private User $user;
+
+    protected function setUp(): void
+    {
+        parent::setUp();
+
+        $this->user = $this->createAuthenticatedUser();
+        $this->actingAs($this->user);
+
+        Account::factory()->for($this->user)->withType(AccountTypeEnum::ASSET)->create();
+        Account::factory()->for($this->user)->withType(AccountTypeEnum::REVENUE)->create();
+        Account::factory()->for($this->user)->withType(AccountTypeEnum::EXPENSE)->create();
+        Account::factory()->for($this->user)->withType(AccountTypeEnum::DEBT)->create();
+        Account::factory()->for($this->user)->withType(AccountTypeEnum::ASSET)->create();
+    }
+
+    public function testIndex(): void
+    {
+        $this->actingAs($this->user);
+        $response = $this->getJson(route('api.v1.accounts.index'));
+        $response->assertStatus(200);
+        $response->assertJson([
+            'meta' => ['pagination' => ['total' => 5]],
+        ]);
+    }
+
+    public function testIndexFailsOnUnknownAccountType(): void
+    {
+        $this->actingAs($this->user);
+        $response = $this->getJson(route('api.v1.accounts.index').'?type=foobar');
+        $response->assertStatus(422);
+        $response->assertJson(['errors' => ['type' => ['The selected type is invalid.']]]);
+    }
+
+    public function testIndexCanFilterOnAccountType(): void
+    {
+        $this->actingAs($this->user);
+        $response = $this->getJson(route('api.v1.accounts.index').'?type=asset');
+        $response->assertStatus(200);
+        $response->assertJson([
+            'data' => [
+                ['attributes' => ['type' => 'asset']],
+                ['attributes' => ['type' => 'asset']],
+            ],
+            'meta' => ['pagination' => ['total' => 2]],
+        ]);
+    }
+}