diff --git a/lib/private/ContextChat/ContentManager.php b/lib/private/ContextChat/ContentManager.php
new file mode 100644
index 00000000000..2185829a633
--- /dev/null
+++ b/lib/private/ContextChat/ContentManager.php
@@ -0,0 +1,50 @@
+<?php
+
+/**
+ * SPDX-FileCopyrightText: 2024-2025 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
+ */
+
+namespace OC\ContextChat;
+
+use OCA\ContextChat\Public\ContentManager as ContextChatContentManager;
+use OCP\ContextChat\IContentManager;
+
+class ContentManager implements IContentManager {
+	public function __construct(
+		private ?ContextChatContentManager $contentManager,
+	) {
+	}
+
+	public function registerContentProvider(string $appId, string $providerId, string $providerClass): void {
+		$this->contentManager?->registerContentProvider($appId, $providerId, $providerClass);
+	}
+
+	public function collectAllContentProviders(): void {
+		$this->contentManager?->collectAllContentProviders();
+	}
+
+	public function submitContent(string $appId, array $items): void {
+		$this->contentManager?->submitContent($appId, $items);
+	}
+
+	public function updateAccess(string $appId, string $providerId, string $itemId, string $op, array $userIds): void {
+		$this->contentManager?->updateAccess($appId, $providerId, $itemId, $op, $userIds);
+	}
+
+	public function updateAccessProvider(string $appId, string $providerId, string $op, array $userIds): void {
+		$this->contentManager?->updateAccessProvider($appId, $providerId, $op, $userIds);
+	}
+
+	public function updateAccessDeclarative(string $appId, string $providerId, string $itemId, array $userIds): void {
+		$this->contentManager?->updateAccessDeclarative($appId, $providerId, $itemId, $op, $userIds);
+	}
+
+	public function deleteProvider(string $appId, string $providerId): void {
+		$this->contentManager?->deleteProvider($appId, $providerId);
+	}
+
+	public function deleteContent(string $appId, string $providerId, array $itemIds): void {
+		$this->contentManager?->deleteContent($appId, $providerId, $itemIds);
+	}
+}
diff --git a/lib/private/Server.php b/lib/private/Server.php
index 4b88a446405..1e1ba2a1ad3 100644
--- a/lib/private/Server.php
+++ b/lib/private/Server.php
@@ -277,6 +277,8 @@ class Server extends ServerContainer implements IServerContainer {
 
 		$this->registerAlias(\OCP\Contacts\IManager::class, \OC\ContactsManager::class);
 
+		$this->registerAlias(\OCP\ContextChat\IContentManager::class, \OC\ContextChat\ContentManager::class);
+
 		$this->registerAlias(\OCP\DirectEditing\IManager::class, \OC\DirectEditing\Manager::class);
 		$this->registerAlias(ITemplateManager::class, TemplateManager::class);
 		$this->registerAlias(\OCP\Template\ITemplateManager::class, \OC\Template\TemplateManager::class);
diff --git a/lib/public/ContextChat/ContentItem.php b/lib/public/ContextChat/ContentItem.php
new file mode 100644
index 00000000000..3cd193a2f60
--- /dev/null
+++ b/lib/public/ContextChat/ContentItem.php
@@ -0,0 +1,34 @@
+<?php
+
+/**
+ * SPDX-FileCopyrightText: 2024-2025 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
+ */
+
+namespace OCP\ContextChat;
+
+/**
+ * @since 32.0.0
+ */
+class ContentItem {
+	/**
+	 * @param string $itemId
+	 * @param string $providerId
+	 * @param string $title
+	 * @param string $content
+	 * @param string $documentType
+	 * @param \DateTime $lastModified
+	 * @param string[] $users
+	 * @since 32.0.0
+	 */
+	public function __construct(
+		public string $itemId,
+		public string $providerId,
+		public string $title,
+		public string $content,
+		public string $documentType,
+		public \DateTime $lastModified,
+		public array $users,
+	) {
+	}
+}
diff --git a/lib/public/ContextChat/Events/ContentProviderRegisterEvent.php b/lib/public/ContextChat/Events/ContentProviderRegisterEvent.php
new file mode 100644
index 00000000000..95c77b5fe0b
--- /dev/null
+++ b/lib/public/ContextChat/Events/ContentProviderRegisterEvent.php
@@ -0,0 +1,33 @@
+<?php
+
+/**
+ * SPDX-FileCopyrightText: 2024-2025 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
+ */
+
+namespace OCP\ContextChat\Events;
+
+use OCP\ContextChat\IContentManager;
+use OCP\ContextChat\IContentProvider;
+use OCP\EventDispatcher\Event;
+
+/**
+ * @since 32.0.0
+ */
+class ContentProviderRegisterEvent extends Event {
+	public function __construct(
+		private IContentManager $contentManager,
+	) {
+	}
+
+	/**
+	 * @param string $appId
+	 * @param string $providerId
+	 * @param class-string<IContentProvider> $providerClass
+	 * @return void
+	 * @since 32.0.0
+	 */
+	public function registerContentProvider(string $appId, string $providerId, string $providerClass): void {
+		$this->contentManager->registerContentProvider($appId, $providerId, $providerClass);
+	}
+}
diff --git a/lib/public/ContextChat/IContentManager.php b/lib/public/ContextChat/IContentManager.php
new file mode 100644
index 00000000000..b6a81892e15
--- /dev/null
+++ b/lib/public/ContextChat/IContentManager.php
@@ -0,0 +1,105 @@
+<?php
+
+/**
+ * SPDX-FileCopyrightText: 2024-2025 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
+ */
+
+namespace OCP\ContextChat;
+
+/**
+ * @since 32.0.0
+ */
+interface IContentManager {
+	/**
+	 * @param string $appId
+	 * @param string $providerId
+	 * @param class-string<IContentProvider> $providerClass
+	 * @return void
+	 * @since 32.0.0
+	 */
+	public function registerContentProvider(string $appId, string $providerId, string $providerClass): void;
+
+	/**
+	 * Emits an event to collect all content providers
+	 *
+	 * @return void
+	 * @since 32.0.0
+	 */
+	public function collectAllContentProviders(): void;
+
+	/**
+	 * Providers can use this to submit content for indexing in context chat
+	 *
+	 * @param string $appId
+	 * @param ContentItem[] $items
+	 * @return void
+	 * @since 32.0.0
+	 */
+	public function submitContent(string $appId, array $items): void;
+
+	/**
+	 * Update access for a content item for specified users.
+	 * This modifies the access list for the content item,
+	 * 	allowing or denying access to the specified users.
+	 * If no user has access to the content item, it will be removed from the knowledge base.
+	 *
+	 * @param string $appId
+	 * @param string $providerId
+	 * @param string $itemId
+	 * @param Type\UpdateAccessOp::* $op
+	 * @param array $userIds
+	 * @return void
+	 * @since 32.0.0
+	 */
+	public function updateAccess(string $appId, string $providerId, string $itemId, string $op, array $userIds): void;
+
+	/**
+	 * Update access for content items from the given provider for specified users.
+	 * If no user has access to the content item, it will be removed from the knowledge base.
+	 *
+	 * @param string $appId
+	 * @param string $providerId
+	 * @param Type\UpdateAccessOp::* $op
+	 * @param array $userIds
+	 * @return void
+	 * @since 32.0.0
+	 */
+	public function updateAccessProvider(string $appId, string $providerId, string $op, array $userIds): void;
+
+	/**
+	 * Update access for a content item for specified users declaratively.
+	 * This overwrites the access list for the content item,
+	 * 	allowing only the specified users access to it.
+	 *
+	 * @param string $appId
+	 * @param string $providerId
+	 * @param string $itemId
+	 * @param array $userIds
+	 * @return void
+	 * @since 32.0.0
+	 */
+	public function updateAccessDeclarative(string $appId, string $providerId, string $itemId, array $userIds): void;
+
+	/**
+	 * Delete all content items and access lists for a provider.
+	 * This does not unregister the provider itself.
+	 *
+	 * @param string $appId
+	 * @param string $providerId
+	 * @return void
+	 * @since 32.0.0
+	 */
+	public function deleteProvider(string $appId, string $providerId): void;
+
+	/**
+	 * Remove a content item from the knowledge base of context chat.
+	 *
+	 * @param string $appId
+	 * @param string $providerId
+	 * @param string[] $itemIds
+	 * @return void
+	 * @since 32.0.0
+	 */
+	public function deleteContent(string $appId, string $providerId, array $itemIds): void;
+}
diff --git a/lib/public/ContextChat/IContentProvider.php b/lib/public/ContextChat/IContentProvider.php
new file mode 100644
index 00000000000..79380db3e9b
--- /dev/null
+++ b/lib/public/ContextChat/IContentProvider.php
@@ -0,0 +1,47 @@
+<?php
+
+/**
+ * SPDX-FileCopyrightText: 2024-2025 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
+ */
+
+namespace OCP\ContextChat;
+
+/**
+ * This interface defines methods to implement a content provider
+ * @since 32.0.0
+ */
+interface IContentProvider {
+	/**
+	 * The ID of the provider
+	 *
+	 * @return string
+	 * @since 32.0.0
+	 */
+	public function getId(): string;
+
+	/**
+	 * The ID of the app making the provider avaialble
+	 *
+	 * @return string
+	 * @since 32.0.0
+	 */
+	public function getAppId(): string;
+
+	/**
+	 * The absolute URL to the content item
+	 *
+	 * @param string $id
+	 * @return string
+	 * @since 32.0.0
+	 */
+	public function getItemUrl(string $id): string;
+
+	/**
+	 * Starts the initial import of content items into context chat
+	 *
+	 * @return void
+	 * @since 32.0.0
+	 */
+	public function triggerInitialImport(): void;
+}
diff --git a/lib/public/ContextChat/Type/UpdateAccessOp.php b/lib/public/ContextChat/Type/UpdateAccessOp.php
new file mode 100644
index 00000000000..f0df12835e4
--- /dev/null
+++ b/lib/public/ContextChat/Type/UpdateAccessOp.php
@@ -0,0 +1,16 @@
+<?php
+
+/**
+ * SPDX-FileCopyrightText: 2024-2025 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
+ */
+
+namespace OCP\ContextChat\Type;
+
+/**
+ * @since 32.0.0
+ */
+class UpdateAccessOp {
+	public const ALLOW = 'allow';
+	public const DENY = 'deny';
+}