diff --git a/apps/macos/Sources/OpenClawProtocol/GatewayModels.swift b/apps/macos/Sources/OpenClawProtocol/GatewayModels.swift
index 02489b7523b..4ae0de3d439 100644
--- a/apps/macos/Sources/OpenClawProtocol/GatewayModels.swift
+++ b/apps/macos/Sources/OpenClawProtocol/GatewayModels.swift
@@ -1516,6 +1516,28 @@ public struct SessionsPreviewParams: Codable, Sendable {
     }
 }
 
+public struct SessionsDescribeParams: Codable, Sendable {
+    public let key: String
+    public let includederivedtitles: Bool?
+    public let includelastmessage: Bool?
+
+    public init(
+        key: String,
+        includederivedtitles: Bool?,
+        includelastmessage: Bool?)
+    {
+        self.key = key
+        self.includederivedtitles = includederivedtitles
+        self.includelastmessage = includelastmessage
+    }
+
+    private enum CodingKeys: String, CodingKey {
+        case key
+        case includederivedtitles = "includeDerivedTitles"
+        case includelastmessage = "includeLastMessage"
+    }
+}
+
 public struct SessionsResolveParams: Codable, Sendable {
     public let key: String?
     public let sessionid: String?
diff --git a/apps/shared/OpenClawKit/Sources/OpenClawProtocol/GatewayModels.swift b/apps/shared/OpenClawKit/Sources/OpenClawProtocol/GatewayModels.swift
index 02489b7523b..4ae0de3d439 100644
--- a/apps/shared/OpenClawKit/Sources/OpenClawProtocol/GatewayModels.swift
+++ b/apps/shared/OpenClawKit/Sources/OpenClawProtocol/GatewayModels.swift
@@ -1516,6 +1516,28 @@ public struct SessionsPreviewParams: Codable, Sendable {
     }
 }
 
+public struct SessionsDescribeParams: Codable, Sendable {
+    public let key: String
+    public let includederivedtitles: Bool?
+    public let includelastmessage: Bool?
+
+    public init(
+        key: String,
+        includederivedtitles: Bool?,
+        includelastmessage: Bool?)
+    {
+        self.key = key
+        self.includederivedtitles = includederivedtitles
+        self.includelastmessage = includelastmessage
+    }
+
+    private enum CodingKeys: String, CodingKey {
+        case key
+        case includederivedtitles = "includeDerivedTitles"
+        case includelastmessage = "includeLastMessage"
+    }
+}
+
 public struct SessionsResolveParams: Codable, Sendable {
     public let key: String?
     public let sessionid: String?