diff --git a/.github/workflows/lint-php-cs.yml b/.github/workflows/lint-php-cs.yml
index f708ba0..ff97df2 100644
--- a/.github/workflows/lint-php-cs.yml
+++ b/.github/workflows/lint-php-cs.yml
@@ -45,7 +45,7 @@ jobs:
 
     strategy:
       matrix:
-        php-versions: [ "8.1", "8.2" ]
+        php-versions: [ "8.0", "8.1", "8.2", "8.3" ]
 
     steps:
       - name: Checkout
diff --git a/.github/workflows/lint-php.yml b/.github/workflows/lint-php.yml
index b039b9a..6fcda6c 100644
--- a/.github/workflows/lint-php.yml
+++ b/.github/workflows/lint-php.yml
@@ -47,7 +47,7 @@ jobs:
 
     strategy:
       matrix:
-        php-versions: [ "8.1", "8.2" ]
+        php-versions: [ "8.0", "8.1", "8.2", "8.3" ]
 
     name: php-lint
 
diff --git a/.github/workflows/phpunit.yml b/.github/workflows/phpunit.yml
index b1dd380..a3d9145 100644
--- a/.github/workflows/phpunit.yml
+++ b/.github/workflows/phpunit.yml
@@ -33,7 +33,7 @@ jobs:
       # do not stop on another job's failure
       fail-fast: false
       matrix:
-        php-versions: [ "8.1", "8.2" ]
+        php-versions: [ "8.0", "8.1", "8.2", "8.3" ]
         databases: ['sqlite']
         server-versions: ['master']
 
diff --git a/.github/workflows/psalm.yml b/.github/workflows/psalm.yml
index 7bf9fda..244bbf1 100644
--- a/.github/workflows/psalm.yml
+++ b/.github/workflows/psalm.yml
@@ -30,8 +30,8 @@ jobs:
 
     strategy:
       matrix:
-        php-versions: [ '8.1', '8.2' ]
-        server-versions: [ 'dev-master', 'dev-stable28' ]
+        php-versions: [ "8.0", "8.1", "8.2", "8.3" ]
+        server-versions: [ 'dev-master', 'stable28' ]
       fail-fast: false
 
     name: Nextcloud
diff --git a/lib/Command/Prompt.php b/lib/Command/Prompt.php
index 1d5da0f..286777c 100644
--- a/lib/Command/Prompt.php
+++ b/lib/Command/Prompt.php
@@ -12,7 +12,6 @@
 
 namespace OCA\ContextChat\Command;
 
-use OCA\ContextChat\Service\ScopeType;
 use OCA\ContextChat\TextProcessing\ContextChatTaskType;
 use OCA\ContextChat\TextProcessing\ScopedContextChatTaskType;
 use OCP\TextProcessing\FreePromptTaskType;
@@ -55,13 +54,13 @@ protected function configure() {
 				'context-sources',
 				null,
 				InputOption::VALUE_REQUIRED,
-				'Context sources to use',
+				'Context sources to use (as a comma-separated list without brackets)',
 			)
 			->addOption(
 				'context-providers',
 				null,
 				InputOption::VALUE_REQUIRED,
-				'Context provider to use',
+				'Context providers to use (as a comma-separated list without brackets)',
 			);
 	}
 
@@ -83,15 +82,19 @@ protected function execute(InputInterface $input, OutputInterface $output) {
 		if ($noContext) {
 			$task = new Task(FreePromptTaskType::class, $prompt, 'context_chat', $userId);
 		} elseif (!empty($contextSources)) {
+			$contextSources = preg_replace('/\s*,+\s*/', ',', $contextSources);
+			$contextSourcesArray  = array_filter(explode(',', $contextSources), fn ($source) => !empty($source));
 			$task = new Task(ScopedContextChatTaskType::class, json_encode([
-				'scopeType' => ScopeType::SOURCE,
-				'scopeList' => explode(',', $contextSources),
+				'scopeType' => 'source',
+				'scopeList' => $contextSourcesArray,
 				'prompt' => $prompt,
 			]), 'context_chat', $userId);
 		} elseif (!empty($contextProviders)) {
+			$contextProviders = preg_replace('/\s*,+\s*/', ',', $contextProviders);
+			$contextProvidersArray  = array_filter(explode(',', $contextProviders), fn ($source) => !empty($source));
 			$task = new Task(ScopedContextChatTaskType::class, json_encode([
-				'scopeType' => ScopeType::PROVIDER,
-				'scopeList' => explode(',', $contextProviders),
+				'scopeType' => 'provider',
+				'scopeList' => $contextProvidersArray,
 				'prompt' => $prompt,
 			]), 'context_chat', $userId);
 		} else {
diff --git a/lib/Service/LangRopeService.php b/lib/Service/LangRopeService.php
index 1f57d1e..7040110 100644
--- a/lib/Service/LangRopeService.php
+++ b/lib/Service/LangRopeService.php
@@ -27,11 +27,6 @@
 use Psr\Log\LoggerInterface;
 use RuntimeException;
 
-enum ScopeType: string {
-	case PROVIDER = 'provider';
-	case SOURCE = 'source';
-}
-
 class LangRopeService {
 	public function __construct(
 		private LoggerInterface $logger,
@@ -195,11 +190,11 @@ public function query(string $userId, string $prompt, bool $useContext = true):
 	/**
 	 * @param string $userId
 	 * @param string $prompt
-	 * @param ScopeType $scopeType
+	 * @param string $scopeType
 	 * @param array<string> $scopeList
 	 * @return array
 	 */
-	public function scopedQuery(string $userId, string $prompt, ScopeType $scopeType, array $scopeList): array {
+	public function scopedQuery(string $userId, string $prompt, string $scopeType, array $scopeList): array {
 		$params = [
 			'query' => $prompt,
 			'userId' => $userId,
diff --git a/lib/TextProcessing/ScopedContextChatProvider.php b/lib/TextProcessing/ScopedContextChatProvider.php
index 60398ba..aeae6bd 100644
--- a/lib/TextProcessing/ScopedContextChatProvider.php
+++ b/lib/TextProcessing/ScopedContextChatProvider.php
@@ -4,7 +4,6 @@
 namespace OCA\ContextChat\TextProcessing;
 
 use OCA\ContextChat\Service\LangRopeService;
-use OCA\ContextChat\Service\ScopeType;
 use OCP\IL10N;
 use OCP\TextProcessing\IProvider;
 use OCP\TextProcessing\IProviderWithUserId;
@@ -63,15 +62,14 @@ public function process(string $prompt): string {
 			throw new \RuntimeException('Invalid JSON string, expected { "scopeType": string, "scopeList": list[string], "prompt": string }');
 		}
 
-		$scopeTypeEnum = ScopeType::tryFrom($parsedData['scopeType']);
-		if ($scopeTypeEnum === null) {
-			throw new \RuntimeException('Invalid scope type: ' . $parsedData['scopeType']);
+		if (!in_array($parsedData['scopeType'], ['source', 'provider'])) {
+			throw new \RuntimeException("Invalid scope type: {$parsedData['scopeType']}, should be 'source' or 'provider'");
 		}
 
 		$response = $this->langRopeService->scopedQuery(
 			$this->userId,
 			$parsedData['prompt'],
-			$scopeTypeEnum,
+			$parsedData['scopeType'],
 			$parsedData['scopeList'],
 		);