diff --git a/src/main/lombok/org/warp/filesponge/SecureFileAccessor.java b/src/main/lombok/org/warp/filesponge/SecureFileAccessor.java
new file mode 100644
index 0000000..7b46f01
--- /dev/null
+++ b/src/main/lombok/org/warp/filesponge/SecureFileAccessor.java
@@ -0,0 +1,55 @@
+/*
+ *     FileSponge
+ *     Copyright (C) 2020 Andrea Cavalli
+ *
+ *     This program is free software: you can redistribute it and/or modify
+ *     it under the terms of the GNU 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 General Public License for more details.
+ *
+ *     You should have received a copy of the GNU General Public License
+ *     along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package org.warp.filesponge;
+
+import java.util.Optional;
+import lombok.AllArgsConstructor;
+import lombok.EqualsAndHashCode;
+import lombok.ToString;
+import org.jetbrains.annotations.NotNull;
+import org.warp.filesponge.api.FileAccessor;
+import org.warp.filesponge.api.FileContent;
+import org.warp.filesponge.api.FileStatus;
+import org.warp.filesponge.api.FileURI;
+
+/**
+ * Prevent access to other methods via casting
+ */
+@AllArgsConstructor
+@EqualsAndHashCode
+@ToString
+public class SecureFileAccessor implements FileAccessor {
+
+	private final FileAccessor fileAccessor;
+
+	@Override
+	public void delete(@NotNull FileURI fileURI) {
+		fileAccessor.delete(fileURI);
+	}
+
+	@Override
+	public Optional<FileContent> getContent(@NotNull FileURI fileURI, boolean offlineOnly) {
+		return fileAccessor.getContent(fileURI, offlineOnly);
+	}
+
+	@Override
+	public @NotNull FileStatus getStatus(@NotNull FileURI fileURI) {
+		return fileAccessor.getStatus(fileURI);
+	}
+}
diff --git a/src/main/lombok/org/warp/filesponge/api/FileAccessor.java b/src/main/lombok/org/warp/filesponge/api/FileAccessor.java
index f38f0ab..bff5261 100644
--- a/src/main/lombok/org/warp/filesponge/api/FileAccessor.java
+++ b/src/main/lombok/org/warp/filesponge/api/FileAccessor.java
@@ -21,6 +21,9 @@ package org.warp.filesponge.api;
 import java.util.Optional;
 import org.jetbrains.annotations.NotNull;
 
+/**
+ * FileAccessor can be used to access files from the client side
+ */
 public interface FileAccessor {
 
 	void delete(@NotNull FileURI fileURI);
diff --git a/src/main/lombok/org/warp/filesponge/api/FileActor.java b/src/main/lombok/org/warp/filesponge/api/FileActor.java
index c92b1ee..f0e9141 100644
--- a/src/main/lombok/org/warp/filesponge/api/FileActor.java
+++ b/src/main/lombok/org/warp/filesponge/api/FileActor.java
@@ -18,4 +18,60 @@
 
 package org.warp.filesponge.api;
 
-public interface FileActor {}
+import java.time.Duration;
+import java.util.Optional;
+import org.jetbrains.annotations.Nullable;
+
+/**
+ * FileActor sends signals to a mirror
+ */
+public interface FileActor {
+
+	/**
+	 * Send a "delete file" signal
+	 *
+	 * @param fileURI File URI
+	 * @return true if the signal can be sent
+	 */
+	boolean deleteFile(FileURI fileURI);
+
+	/**
+	 * Send a "download file" signal
+	 *
+	 * @param fileURI File URI
+	 * @return true if the signal can be sent
+	 */
+	boolean downloadFile(FileURI fileURI);
+
+	/**
+	 * Check if this actor can handle signals for this file
+	 *
+	 * @param fileURI File URI
+	 * @return true if the actor can send signals related to this file
+	 */
+	boolean canHandleFile(FileURI fileURI);
+
+	/**
+	 * Send a "download file" signal
+	 *
+	 * @param fileURI File URI
+	 * @param timeout if it's null the method will return immediately,
+	 *                 if it's set the method will wait until a file <b>download request</b> has been found,
+	 *                 or the timeout time elapsed
+	 * @return empty if no pending <b>download requests</b> has been found,
+	 * true if the signal can be sent, false otherwise
+	 */
+	Optional<Boolean> downloadNextFile(FileURI fileURI, @Nullable Duration timeout);
+
+	/**
+	 * Send a "delete file" signal
+	 *
+	 * @param fileURI File URI
+	 * @param timeout if it's null the method will return immediately,
+	 *                 if it's set the method will wait until a file <b>delete request</b> has been found,
+	 *                 or the timeout time elapsed
+	 * @return empty if no pending <b>delete requests</b> has been found,
+	 * true if the signal can be sent, false otherwise
+	 */
+	Optional<Boolean> deleteNextFile(FileURI fileURI, @Nullable Duration timeout);
+}
diff --git a/src/main/lombok/org/warp/filesponge/api/FileSource.java b/src/main/lombok/org/warp/filesponge/api/FileSource.java
index 79142ac..13ec1a3 100644
--- a/src/main/lombok/org/warp/filesponge/api/FileSource.java
+++ b/src/main/lombok/org/warp/filesponge/api/FileSource.java
@@ -21,6 +21,9 @@ package org.warp.filesponge.api;
 import java.nio.ByteBuffer;
 import org.jetbrains.annotations.NotNull;
 
+/**
+ * FileSource receives requests from a mirror
+ */
 public interface FileSource {
 
 	void onAvailable();
diff --git a/src/main/lombok/org/warp/filesponge/api/FileSpongeClient.java b/src/main/lombok/org/warp/filesponge/api/FileSpongeClient.java
new file mode 100644
index 0000000..2400ed2
--- /dev/null
+++ b/src/main/lombok/org/warp/filesponge/api/FileSpongeClient.java
@@ -0,0 +1,37 @@
+/*
+ *     FileSponge
+ *     Copyright (C) 2020 Andrea Cavalli
+ *
+ *     This program is free software: you can redistribute it and/or modify
+ *     it under the terms of the GNU 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 General Public License for more details.
+ *
+ *     You should have received a copy of the GNU General Public License
+ *     along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package org.warp.filesponge.api;
+
+import org.warp.filesponge.SecureFileAccessor;
+
+/**
+ * FileAccessor can be used to manage FileSponge and access files from the client side
+ */
+public interface FileSpongeClient extends FileAccessor {
+
+	void optimizeStorage();
+
+	/**
+	 * Get this instance but without special methods
+	 * @return a limited instance of itself
+	 */
+	default FileAccessor asFileAccessor() {
+		return new SecureFileAccessor(this);
+	}
+}