diff --git a/beacon/src/main/java/io/xpipe/beacon/exchange/ListCollectionsExchange.java b/beacon/src/main/java/io/xpipe/beacon/exchange/ListCollectionsExchange.java
index f91ab35c..843e01ee 100644
--- a/beacon/src/main/java/io/xpipe/beacon/exchange/ListCollectionsExchange.java
+++ b/beacon/src/main/java/io/xpipe/beacon/exchange/ListCollectionsExchange.java
@@ -3,9 +3,10 @@ package io.xpipe.beacon.exchange;
 import io.xpipe.beacon.message.RequestMessage;
 import io.xpipe.beacon.message.ResponseMessage;
 
+import java.time.Instant;
 import java.util.List;
 
-public class ListCollectionsExchange implements MessageExchange<ListCollectionsExchange.Request, ListCollectionsExchange.Response> {
+public abstract class ListCollectionsExchange implements MessageExchange<ListCollectionsExchange.Request, ListCollectionsExchange.Response> {
 
     @Override
     public String getId() {
@@ -26,7 +27,7 @@ public class ListCollectionsExchange implements MessageExchange<ListCollectionsE
 
     }
 
-    public static record Entry(String name, int count) {
+    public static record Entry(String name, int count, Instant lastUsed) {
 
     }
 
diff --git a/beacon/src/main/java/io/xpipe/beacon/exchange/ListEntriesExchange.java b/beacon/src/main/java/io/xpipe/beacon/exchange/ListEntriesExchange.java
index 97408ae1..ca922667 100644
--- a/beacon/src/main/java/io/xpipe/beacon/exchange/ListEntriesExchange.java
+++ b/beacon/src/main/java/io/xpipe/beacon/exchange/ListEntriesExchange.java
@@ -3,6 +3,7 @@ package io.xpipe.beacon.exchange;
 import io.xpipe.beacon.message.RequestMessage;
 import io.xpipe.beacon.message.ResponseMessage;
 
+import java.time.Instant;
 import java.util.List;
 
 public abstract class ListEntriesExchange implements MessageExchange<ListEntriesExchange.Request, ListEntriesExchange.Response> {
@@ -26,7 +27,7 @@ public abstract class ListEntriesExchange implements MessageExchange<ListEntries
 
     }
 
-    public static record Entry(String name, String type, String description, String date, String size) {
+    public static record Entry(String name, String type, String description, Instant lastUsed, int size) {
 
     }
 
diff --git a/beacon/src/main/java/io/xpipe/beacon/exchange/ModeExchange.java b/beacon/src/main/java/io/xpipe/beacon/exchange/ModeExchange.java
index 264d416a..85ce4c80 100644
--- a/beacon/src/main/java/io/xpipe/beacon/exchange/ModeExchange.java
+++ b/beacon/src/main/java/io/xpipe/beacon/exchange/ModeExchange.java
@@ -3,7 +3,7 @@ package io.xpipe.beacon.exchange;
 import io.xpipe.beacon.message.RequestMessage;
 import io.xpipe.beacon.message.ResponseMessage;
 
-public class ModeExchange implements MessageExchange<ModeExchange.Request, ModeExchange.Response> {
+public abstract class ModeExchange implements MessageExchange<ModeExchange.Request, ModeExchange.Response> {
 
     @Override
     public String getId() {
diff --git a/beacon/src/main/java/io/xpipe/beacon/exchange/ReadStructureExchange.java b/beacon/src/main/java/io/xpipe/beacon/exchange/ReadStructureExchange.java
index fad9e29c..6066e82d 100644
--- a/beacon/src/main/java/io/xpipe/beacon/exchange/ReadStructureExchange.java
+++ b/beacon/src/main/java/io/xpipe/beacon/exchange/ReadStructureExchange.java
@@ -4,7 +4,7 @@ import io.xpipe.beacon.message.RequestMessage;
 import io.xpipe.beacon.message.ResponseMessage;
 import io.xpipe.core.source.DataSourceId;
 
-public class ReadStructureExchange implements MessageExchange<ReadStructureExchange.Request, ReadStructureExchange.Response> {
+public abstract class ReadStructureExchange implements MessageExchange<ReadStructureExchange.Request, ReadStructureExchange.Response> {
 
     @Override
     public String getId() {
diff --git a/beacon/src/main/java/io/xpipe/beacon/exchange/ReadTableDataExchange.java b/beacon/src/main/java/io/xpipe/beacon/exchange/ReadTableDataExchange.java
index 9cadb7ea..051a11dd 100644
--- a/beacon/src/main/java/io/xpipe/beacon/exchange/ReadTableDataExchange.java
+++ b/beacon/src/main/java/io/xpipe/beacon/exchange/ReadTableDataExchange.java
@@ -4,7 +4,7 @@ import io.xpipe.beacon.message.RequestMessage;
 import io.xpipe.beacon.message.ResponseMessage;
 import io.xpipe.core.source.DataSourceId;
 
-public class ReadTableDataExchange implements MessageExchange<ReadTableDataExchange.Request, ReadTableDataExchange.Response> {
+public abstract class ReadTableDataExchange implements MessageExchange<ReadTableDataExchange.Request, ReadTableDataExchange.Response> {
 
     @Override
     public String getId() {
@@ -21,7 +21,7 @@ public class ReadTableDataExchange implements MessageExchange<ReadTableDataExcha
         return ReadTableDataExchange.Response.class;
     }
 
-    public static record Request(DataSourceId sourceId, int maxLines) implements RequestMessage {
+    public static record Request(DataSourceId sourceId, int startow, int maxRows) implements RequestMessage {
 
     }
 
diff --git a/beacon/src/main/java/io/xpipe/beacon/exchange/ReadTableInfoExchange.java b/beacon/src/main/java/io/xpipe/beacon/exchange/ReadTableInfoExchange.java
index f7ff18fb..172bf2e6 100644
--- a/beacon/src/main/java/io/xpipe/beacon/exchange/ReadTableInfoExchange.java
+++ b/beacon/src/main/java/io/xpipe/beacon/exchange/ReadTableInfoExchange.java
@@ -5,7 +5,7 @@ import io.xpipe.beacon.message.ResponseMessage;
 import io.xpipe.core.data.type.DataType;
 import io.xpipe.core.source.DataSourceId;
 
-public class ReadTableInfoExchange implements MessageExchange<ReadTableInfoExchange.Request, ReadTableInfoExchange.Response> {
+public abstract class ReadTableInfoExchange implements MessageExchange<ReadTableInfoExchange.Request, ReadTableInfoExchange.Response> {
 
     @Override
     public String getId() {
diff --git a/beacon/src/main/java/io/xpipe/beacon/exchange/StatusExchange.java b/beacon/src/main/java/io/xpipe/beacon/exchange/StatusExchange.java
index a8e2a333..f2c35251 100644
--- a/beacon/src/main/java/io/xpipe/beacon/exchange/StatusExchange.java
+++ b/beacon/src/main/java/io/xpipe/beacon/exchange/StatusExchange.java
@@ -3,7 +3,7 @@ package io.xpipe.beacon.exchange;
 import io.xpipe.beacon.message.RequestMessage;
 import io.xpipe.beacon.message.ResponseMessage;
 
-public class StatusExchange implements MessageExchange<StatusExchange.Request, StatusExchange.Response> {
+public abstract class StatusExchange implements MessageExchange<StatusExchange.Request, StatusExchange.Response> {
 
     @Override
     public String getId() {
diff --git a/beacon/src/main/java/io/xpipe/beacon/exchange/StopExchange.java b/beacon/src/main/java/io/xpipe/beacon/exchange/StopExchange.java
new file mode 100644
index 00000000..1d16e50c
--- /dev/null
+++ b/beacon/src/main/java/io/xpipe/beacon/exchange/StopExchange.java
@@ -0,0 +1,30 @@
+package io.xpipe.beacon.exchange;
+
+import io.xpipe.beacon.message.RequestMessage;
+import io.xpipe.beacon.message.ResponseMessage;
+
+public abstract class StopExchange implements MessageExchange<StopExchange.Request, StopExchange.Response> {
+
+    @Override
+    public String getId() {
+        return "stop";
+    }
+
+    @Override
+    public Class<StopExchange.Request> getRequestClass() {
+        return StopExchange.Request.class;
+    }
+
+    @Override
+    public Class<StopExchange.Response> getResponseClass() {
+        return StopExchange.Response.class;
+    }
+
+    public static record Request(int timeout, boolean force) implements RequestMessage {
+
+    }
+
+    public static record Response() implements ResponseMessage {
+
+    }
+}
diff --git a/beacon/src/main/java/io/xpipe/beacon/exchange/VersionExchange.java b/beacon/src/main/java/io/xpipe/beacon/exchange/VersionExchange.java
index 6e7bee62..367466b5 100644
--- a/beacon/src/main/java/io/xpipe/beacon/exchange/VersionExchange.java
+++ b/beacon/src/main/java/io/xpipe/beacon/exchange/VersionExchange.java
@@ -3,7 +3,7 @@ package io.xpipe.beacon.exchange;
 import io.xpipe.beacon.message.RequestMessage;
 import io.xpipe.beacon.message.ResponseMessage;
 
-public class VersionExchange implements MessageExchange<VersionExchange.Request, VersionExchange.Response> {
+public abstract class VersionExchange implements MessageExchange<VersionExchange.Request, VersionExchange.Response> {
 
     @Override
     public String getId() {