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diff --git a/lib/public/TextProcessing/IManager.php b/lib/public/TextProcessing/IManager.php
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+++ b/lib/public/TextProcessing/IManager.php
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+<?php
+
+declare(strict_types=1);
+
+/**
+ * @copyright Copyright (c) 2023 Marcel Klehr <mklehr@gmx.net>
+ *
+ * @author Marcel Klehr <mklehr@gmx.net>
+ *
+ * @license GNU AGPL version 3 or any later version
+ *
+ * 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 <http://www.gnu.org/licenses/>.
+ */
+
+
+namespace OCP\TextProcessing;
+
+use OCP\Common\Exception\NotFoundException;
+use OCP\PreConditionNotMetException;
+use RuntimeException;
+
+/**
+ * API surface for apps interacting with and making use of LanguageModel providers
+ * without known which providers are installed
+ * @since 27.1.0
+ */
+interface IManager {
+	/**
+	 * @since 27.1.0
+	 */
+	public function hasProviders(): bool;
+
+	/**
+	 * @return class-string<ITaskType>[]
+	 * @since 27.1.0
+	 */
+	public function getAvailableTaskTypes(): array;
+
+	/**
+	 * @param Task $task The task to run
+	 * @throws PreConditionNotMetException If no or not the requested provider was registered but this method was still called
+	 * @throws RuntimeException If something else failed
+	 * @since 27.1.0
+	 */
+	public function runTask(Task $task): string;
+
+	/**
+	 * Will schedule an LLM inference process in the background. The result will become available
+	 * with the \OCP\LanguageModel\Events\TaskSuccessfulEvent
+	 * If inference fails a \OCP\LanguageModel\Events\TaskFailedEvent will be dispatched instead
+	 *
+	 * @param Task $task The task to schedule
+	 * @throws PreConditionNotMetException If no or not the requested provider was registered but this method was still called
+	 * @since 27.1.0
+	 */
+	public function scheduleTask(Task $task) : void;
+
+	/**
+	 * @param int $id The id of the task
+	 * @return Task
+	 * @throws RuntimeException If the query failed
+	 * @throws NotFoundException If the task could not be found
+	 * @since 27.1.0
+	 */
+	public function getTask(int $id): Task;
+}