diff --git a/build/target-repository/composer.json b/build/target-repository/composer.json
index 01d33b7ac75..02630bbc841 100644
--- a/build/target-repository/composer.json
+++ b/build/target-repository/composer.json
@@ -23,8 +23,5 @@
         "rector/rector-downgrade-php": "*"
     },
     "minimum-stability": "dev",
-    "prefer-stable": true,
-    "suggest": {
-        "ext-dom": "To manipulate phpunit.xml via the custom-rule command"
-    }
+    "prefer-stable": true
 }
diff --git a/src/Console/Command/CustomRuleCommand.php b/src/Console/Command/CustomRuleCommand.php
index c51909f1e25..af97edcce63 100644
--- a/src/Console/Command/CustomRuleCommand.php
+++ b/src/Console/Command/CustomRuleCommand.php
@@ -4,24 +4,15 @@
 
 namespace Rector\Console\Command;
 
-use Nette\Utils\FileSystem;
-use Nette\Utils\Strings;
-use PHPStan\Reflection\ReflectionProvider;
-use Rector\Enum\ClassName;
-use Rector\Exception\ShouldNotHappenException;
-use Rector\FileSystem\JsonFileSystem;
 use Symfony\Component\Console\Command\Command;
 use Symfony\Component\Console\Input\InputInterface;
 use Symfony\Component\Console\Output\OutputInterface;
 use Symfony\Component\Console\Style\SymfonyStyle;
-use Symfony\Component\Finder\Finder;
-use Symfony\Component\Finder\SplFileInfo;
 
 final class CustomRuleCommand extends Command
 {
     public function __construct(
-        private readonly SymfonyStyle $symfonyStyle,
-        private readonly ReflectionProvider $reflectionProvider
+        private readonly SymfonyStyle $symfonyStyle
     ) {
         parent::__construct();
     }
@@ -29,118 +20,15 @@ public function __construct(
     protected function configure(): void
     {
         $this->setName('custom-rule');
-        $this->setDescription('Create base of local custom rule with tests');
+        $this->setDescription('[DEPRECATED] Create base of local custom rule with tests');
     }
 
     protected function execute(InputInterface $input, OutputInterface $output): int
     {
-        // ask for rule name
-        $rectorName = $this->symfonyStyle->ask(
-            'What is the rule class name? (e.g. "LegacyCallToDbalMethodCall")?',
-            null,
-            static function (?string $answer): string {
-                if ($answer === '' || $answer === null) {
-                    throw new ShouldNotHappenException('Rector name cannot be empty');
-                }
-
-                return $answer;
-            }
+        $this->symfonyStyle->error(
+            'The "custom-rule" command is deprecated and no longer generates files. Use an AI agent to scaffold a custom rule instead - it handles the setup faster and with less guesswork.'
         );
 
-        // suffix with Rector by convention
-        if (! str_ends_with((string) $rectorName, 'Rector')) {
-            $rectorName .= 'Rector';
-        }
-
-        $rectorName = ucfirst((string) $rectorName);
-
-        // find all files in templates directory
-        $finder = Finder::create()
-            ->files()
-            ->in(__DIR__ . '/../../../templates/custom-rule')
-            ->notName('__Name__Test.php.phtml');
-
-        // 0. resolve if local phpunit is at least PHPUnit 10 (which supports #[DataProvider])
-        // to provide annotation if not
-        if ($this->isPHPUnitAttributeSupported()) {
-            $finder->append([
-                new SplFileInfo(
-                    __DIR__ . '/../../../templates/custom-rule/utils/rector/tests/Rector/__Name__/__Name__Test.php.phtml',
-                    'utils/rector/tests/Rector/__Name__',
-                    'utils/rector/tests/Rector/__Name__/__Name__Test.php.phtml',
-                ),
-            ]);
-        } else {
-            // use @annotations for PHPUnit 9 and bellow
-            $finder->append([
-                new SplFileInfo(
-                    __DIR__ . '/../../../templates/custom-rules-annotations/utils/rector/tests/Rector/__Name__/__Name__Test.php.phtml',
-                    'utils/rector/tests/Rector/__Name__',
-                    'utils/rector/tests/Rector/__Name__/__Name__Test.php.phtml',
-                ),
-            ]);
-        }
-
-        $currentDirectory = getcwd();
-
-        $generatedFilePaths = [];
-
-        $fileInfos = iterator_to_array($finder->getIterator());
-
-        foreach ($fileInfos as $fileInfo) {
-            // replace "__Name__" with $rectorName
-            $newContent = $this->replaceNameVariable($rectorName, $fileInfo->getContents());
-            $newFilePath = $this->replaceNameVariable($rectorName, $fileInfo->getRelativePathname());
-
-            // remove "phtml" suffix
-            $newFilePath = Strings::substring($newFilePath, 0, -strlen('.phtml'));
-
-            FileSystem::write($currentDirectory . '/' . $newFilePath, $newContent, null);
-
-            $generatedFilePaths[] = $newFilePath;
-        }
-
-        $title = sprintf('Skeleton for "%s" rule was created. Now write rule logic to solve your problem', $rectorName);
-        $this->symfonyStyle->title($title);
-        $this->symfonyStyle->listing($generatedFilePaths);
-
-        // 2. update autoload-dev in composer.json
-        $composerJsonFilePath = $currentDirectory . '/composer.json';
-        if (file_exists($composerJsonFilePath)) {
-            $hasChanged = false;
-            $composerJson = JsonFileSystem::readFilePath($composerJsonFilePath);
-
-            if (! isset($composerJson['autoload-dev']['psr-4']['Utils\\Rector\\'])) {
-                $composerJson['autoload-dev']['psr-4']['Utils\\Rector\\'] = 'utils/rector/src';
-                $composerJson['autoload-dev']['psr-4']['Utils\\Rector\\Tests\\'] = 'utils/rector/tests';
-                $hasChanged = true;
-            }
-
-            if ($hasChanged) {
-                $this->symfonyStyle->writeln('We updated "composer.json" autoload-dev to load Rector rules.');
-                $this->symfonyStyle->writeln('Now run "composer dump-autoload" to update paths');
-                JsonFileSystem::writeFile($composerJsonFilePath, $composerJson);
-            }
-        }
-
-        $this->symfonyStyle->newLine(1);
-
-        // 3. update phpunit.xml(.dist) to include rector test suite
-        $this->symfonyStyle->writeln('<fg=green>Run Rector tests via PHPUnit:</>');
-        $this->symfonyStyle->newLine(1);
-        $this->symfonyStyle->writeln('  vendor/bin/phpunit utils/rector/tests');
-        $this->symfonyStyle->newLine(1);
-
-        return Command::SUCCESS;
-    }
-
-    private function replaceNameVariable(string $rectorName, string $contents): string
-    {
-        return str_replace('__Name__', $rectorName, $contents);
-    }
-
-    private function isPHPUnitAttributeSupported(): bool
-    {
-        return $this->reflectionProvider->hasClass(ClassName::DATA_PROVIDER);
+        return Command::FAILURE;
     }
 }
diff --git a/src/Enum/ClassName.php b/src/Enum/ClassName.php
index f3a71087f6f..7c79bd5f51f 100644
--- a/src/Enum/ClassName.php
+++ b/src/Enum/ClassName.php
@@ -15,6 +15,4 @@ final class ClassName
     public const string JMS_TYPE = 'JMS\Serializer\Annotation\Type';
 
     public const string DOCTRINE_ENTITY = 'Doctrine\ORM\Mapping\Entity';
-
-    public const string DATA_PROVIDER = 'PHPUnit\Framework\Attributes\DataProvider';
 }
diff --git a/src/FileSystem/JsonFileSystem.php b/src/FileSystem/JsonFileSystem.php
index 052add9ba9a..6b53e456686 100644
--- a/src/FileSystem/JsonFileSystem.php
+++ b/src/FileSystem/JsonFileSystem.php
@@ -18,13 +18,4 @@ public static function readFilePath(string $filePath): array
 
         return Json::decode($fileContents, forceArrays: true);
     }
-
-    /**
-     * @param array<string, mixed> $data
-     */
-    public static function writeFile(string $filePath, array $data): void
-    {
-        $json = Json::encode($data, pretty: true);
-        FileSystem::write($filePath, $json, null);
-    }
 }
diff --git a/templates/custom-rule/utils/rector/src/Rector/__Name__.php.phtml b/templates/custom-rule/utils/rector/src/Rector/__Name__.php.phtml
deleted file mode 100644
index fbbccf28be9..00000000000
--- a/templates/custom-rule/utils/rector/src/Rector/__Name__.php.phtml
+++ /dev/null
@@ -1,33 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Utils\Rector\Rector;
-
-use PhpParser\Node;
-use Rector\Rector\AbstractRector;
-
-/**
- * @see \Rector\Tests\TypeDeclaration\Rector\__Name__\__Name__Test
- */
-final class __Name__ extends AbstractRector
-{
-    /**
-     * @return array<class-string<Node>>
-     */
-    public function getNodeTypes(): array
-    {
-        // @todo select node type
-        return [\PhpParser\Node\Stmt\Class_::class];
-    }
-
-    /**
-     * @param \PhpParser\Node\Stmt\Class_ $node
-     */
-    public function refactor(Node $node): ?Node
-    {
-        // @todo change the node
-
-        return $node;
-    }
-}
diff --git a/templates/custom-rule/utils/rector/tests/Rector/__Name__/Fixture/some_class.php.inc.phtml b/templates/custom-rule/utils/rector/tests/Rector/__Name__/Fixture/some_class.php.inc.phtml
deleted file mode 100644
index 6cf9dc365f0..00000000000
--- a/templates/custom-rule/utils/rector/tests/Rector/__Name__/Fixture/some_class.php.inc.phtml
+++ /dev/null
@@ -1,15 +0,0 @@
-<?php
-
-namespace Rector\Tests\TypeDeclaration\Rector\__Name__\Fixture;
-
-// @todo fill code before
-
-?>
------
-<?php
-
-namespace Rector\Tests\TypeDeclaration\Rector\__Name__\Fixture;
-
-// @todo fill code after
-
-?>
diff --git a/templates/custom-rule/utils/rector/tests/Rector/__Name__/__Name__Test.php.phtml b/templates/custom-rule/utils/rector/tests/Rector/__Name__/__Name__Test.php.phtml
deleted file mode 100644
index 370713d87a3..00000000000
--- a/templates/custom-rule/utils/rector/tests/Rector/__Name__/__Name__Test.php.phtml
+++ /dev/null
@@ -1,27 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Rector\Tests\TypeDeclaration\Rector\__Name__;
-
-use PHPUnit\Framework\Attributes\DataProvider;
-use Rector\Testing\PHPUnit\AbstractRectorTestCase;
-
-final class __Name__Test extends AbstractRectorTestCase
-{
-    #[DataProvider('provideData')]
-    public function test(string $filePath): void
-    {
-        $this->doTestFile($filePath);
-    }
-
-    public static function provideData(): \Iterator
-    {
-        return self::yieldFilesFromDirectory(__DIR__ . '/Fixture');
-    }
-
-    public function provideConfigFilePath(): string
-    {
-        return __DIR__ . '/config/configured_rule.php';
-    }
-}
diff --git a/templates/custom-rule/utils/rector/tests/Rector/__Name__/config/configured_rule.php.phtml b/templates/custom-rule/utils/rector/tests/Rector/__Name__/config/configured_rule.php.phtml
deleted file mode 100644
index 25ee3a80e6d..00000000000
--- a/templates/custom-rule/utils/rector/tests/Rector/__Name__/config/configured_rule.php.phtml
+++ /dev/null
@@ -1,9 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-use Rector\Config\RectorConfig;
-
-return static function (RectorConfig $rectorConfig): void {
-    $rectorConfig->rule(\Utils\Rector\Rector\__Name__::class);
-};
diff --git a/templates/custom-rules-annotations/utils/rector/tests/Rector/__Name__/__Name__Test.php.phtml b/templates/custom-rules-annotations/utils/rector/tests/Rector/__Name__/__Name__Test.php.phtml
deleted file mode 100644
index 6cad0044274..00000000000
--- a/templates/custom-rules-annotations/utils/rector/tests/Rector/__Name__/__Name__Test.php.phtml
+++ /dev/null
@@ -1,28 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Rector\Tests\TypeDeclaration\Rector\__Name__;
-
-use Rector\Testing\PHPUnit\AbstractRectorTestCase;
-
-final class __Name__Test extends AbstractRectorTestCase
-{
-    /**
-     * @dataProvider provideData()
-     */
-    public function test(string $filePath): void
-    {
-        $this->doTestFile($filePath);
-    }
-
-    public static function provideData(): \Iterator
-    {
-        return self::yieldFilesFromDirectory(__DIR__ . '/Fixture');
-    }
-
-    public function provideConfigFilePath(): string
-    {
-        return __DIR__ . '/config/configured_rule.php';
-    }
-}