app-server: Emit thread archive/unarchive notifications (#12030)

* Add v2 server notifications `thread/archived` and `thread/unarchived`
with a `threadId` payload.
* Wire new events into `thread/archive` and `thread/unarchive` success
paths.
* Update app-server protocol/schema/docs accordingly.

Testing:
- Updated archive/unarchive end-to-end tests to verify both
notifications are emitted with the expected thread id payload.

codex-rs/app-server-protocol/schema/json/ClientRequest.json

@@ -4756,4 +4756,4 @@
     }
   ],
   "title": "ClientRequest"
-}
+}

codex-rs/app-server-protocol/schema/json/ServerNotification.json

@@ -6539,6 +6539,17 @@
       ],
       "type": "object"
     },
+    "ThreadArchivedNotification": {
+      "properties": {
+        "threadId": {
+          "type": "string"
+        }
+      },
+      "required": [
+        "threadId"
+      ],
+      "type": "object"
+    },
     "ThreadId": {
       "type": "string"
     },
@@ -7083,6 +7094,17 @@
       ],
       "type": "object"
     },
+    "ThreadUnarchivedNotification": {
+      "properties": {
+        "threadId": {
+          "type": "string"
+        }
+      },
+      "required": [
+        "threadId"
+      ],
+      "type": "object"
+    },
     "TokenUsage": {
       "properties": {
         "cached_input_tokens": {
@@ -8076,6 +8098,46 @@
       "title": "Thread/startedNotification",
       "type": "object"
     },
+    {
+      "properties": {
+        "method": {
+          "enum": [
+            "thread/archived"
+          ],
+          "title": "Thread/archivedNotificationMethod",
+          "type": "string"
+        },
+        "params": {
+          "$ref": "#/definitions/ThreadArchivedNotification"
+        }
+      },
+      "required": [
+        "method",
+        "params"
+      ],
+      "title": "Thread/archivedNotification",
+      "type": "object"
+    },
+    {
+      "properties": {
+        "method": {
+          "enum": [
+            "thread/unarchived"
+          ],
+          "title": "Thread/unarchivedNotificationMethod",
+          "type": "string"
+        },
+        "params": {
+          "$ref": "#/definitions/ThreadUnarchivedNotification"
+        }
+      },
+      "required": [
+        "method",
+        "params"
+      ],
+      "title": "Thread/unarchivedNotification",
+      "type": "object"
+    },
     {
       "properties": {
         "method": {

codex-rs/app-server-protocol/schema/json/codex_app_server_protocol.schemas.json

@@ -8063,6 +8063,46 @@
           "title": "Thread/startedNotification",
           "type": "object"
         },
+        {
+          "properties": {
+            "method": {
+              "enum": [
+                "thread/archived"
+              ],
+              "title": "Thread/archivedNotificationMethod",
+              "type": "string"
+            },
+            "params": {
+              "$ref": "#/definitions/v2/ThreadArchivedNotification"
+            }
+          },
+          "required": [
+            "method",
+            "params"
+          ],
+          "title": "Thread/archivedNotification",
+          "type": "object"
+        },
+        {
+          "properties": {
+            "method": {
+              "enum": [
+                "thread/unarchived"
+              ],
+              "title": "Thread/unarchivedNotificationMethod",
+              "type": "string"
+            },
+            "params": {
+              "$ref": "#/definitions/v2/ThreadUnarchivedNotification"
+            }
+          },
+          "required": [
+            "method",
+            "params"
+          ],
+          "title": "Thread/unarchivedNotification",
+          "type": "object"
+        },
         {
           "properties": {
             "method": {
@@ -15107,6 +15147,19 @@
         "title": "ThreadArchiveResponse",
         "type": "object"
       },
+      "ThreadArchivedNotification": {
+        "$schema": "http://json-schema.org/draft-07/schema#",
+        "properties": {
+          "threadId": {
+            "type": "string"
+          }
+        },
+        "required": [
+          "threadId"
+        ],
+        "title": "ThreadArchivedNotification",
+        "type": "object"
+      },
       "ThreadCompactStartParams": {
         "$schema": "http://json-schema.org/draft-07/schema#",
         "properties": {
@@ -16315,6 +16368,19 @@
         "title": "ThreadUnarchiveResponse",
         "type": "object"
       },
+      "ThreadUnarchivedNotification": {
+        "$schema": "http://json-schema.org/draft-07/schema#",
+        "properties": {
+          "threadId": {
+            "type": "string"
+          }
+        },
+        "required": [
+          "threadId"
+        ],
+        "title": "ThreadUnarchivedNotification",
+        "type": "object"
+      },
       "TokenUsageBreakdown": {
         "properties": {
           "cachedInputTokens": {
@@ -17020,4 +17086,4 @@
   },
   "title": "CodexAppServerProtocol",
   "type": "object"
-}
+}

codex-rs/app-server-protocol/schema/json/v2/SkillsRemoteReadParams.json

@@ -44,4 +44,4 @@
   },
   "title": "SkillsRemoteReadParams",
   "type": "object"
-}
+}

codex-rs/app-server-protocol/schema/json/v2/SkillsRemoteWriteResponse.json

@@ -14,4 +14,4 @@
   ],
   "title": "SkillsRemoteWriteResponse",
   "type": "object"
-}
+}

codex-rs/app-server-protocol/schema/json/v2/ThreadArchivedNotification.json

@@ -0,0 +1,13 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "properties": {
+    "threadId": {
+      "type": "string"
+    }
+  },
+  "required": [
+    "threadId"
+  ],
+  "title": "ThreadArchivedNotification",
+  "type": "object"
+}

codex-rs/app-server-protocol/schema/json/v2/ThreadUnarchivedNotification.json

@@ -0,0 +1,13 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "properties": {
+    "threadId": {
+      "type": "string"
+    }
+  },
+  "required": [
+    "threadId"
+  ],
+  "title": "ThreadUnarchivedNotification",
+  "type": "object"
+}

codex-rs/app-server-protocol/schema/typescript/ServerNotification.ts

@@ -28,9 +28,11 @@ import type { ReasoningSummaryPartAddedNotification } from "./v2/ReasoningSummar
 import type { ReasoningSummaryTextDeltaNotification } from "./v2/ReasoningSummaryTextDeltaNotification";
 import type { ReasoningTextDeltaNotification } from "./v2/ReasoningTextDeltaNotification";
 import type { TerminalInteractionNotification } from "./v2/TerminalInteractionNotification";
+import type { ThreadArchivedNotification } from "./v2/ThreadArchivedNotification";
 import type { ThreadNameUpdatedNotification } from "./v2/ThreadNameUpdatedNotification";
 import type { ThreadStartedNotification } from "./v2/ThreadStartedNotification";
 import type { ThreadTokenUsageUpdatedNotification } from "./v2/ThreadTokenUsageUpdatedNotification";
+import type { ThreadUnarchivedNotification } from "./v2/ThreadUnarchivedNotification";
 import type { TurnCompletedNotification } from "./v2/TurnCompletedNotification";
 import type { TurnDiffUpdatedNotification } from "./v2/TurnDiffUpdatedNotification";
 import type { TurnPlanUpdatedNotification } from "./v2/TurnPlanUpdatedNotification";
@@ -40,4 +42,4 @@ import type { WindowsWorldWritableWarningNotification } from "./v2/WindowsWorldW
 /**
  * Notification sent from the server to the client.
  */
-export type ServerNotification = { "method": "error", "params": ErrorNotification } | { "method": "thread/started", "params": ThreadStartedNotification } | { "method": "thread/name/updated", "params": ThreadNameUpdatedNotification } | { "method": "thread/tokenUsage/updated", "params": ThreadTokenUsageUpdatedNotification } | { "method": "turn/started", "params": TurnStartedNotification } | { "method": "turn/completed", "params": TurnCompletedNotification } | { "method": "turn/diff/updated", "params": TurnDiffUpdatedNotification } | { "method": "turn/plan/updated", "params": TurnPlanUpdatedNotification } | { "method": "item/started", "params": ItemStartedNotification } | { "method": "item/completed", "params": ItemCompletedNotification } | { "method": "rawResponseItem/completed", "params": RawResponseItemCompletedNotification } | { "method": "item/agentMessage/delta", "params": AgentMessageDeltaNotification } | { "method": "item/plan/delta", "params": PlanDeltaNotification } | { "method": "item/commandExecution/outputDelta", "params": CommandExecutionOutputDeltaNotification } | { "method": "item/commandExecution/terminalInteraction", "params": TerminalInteractionNotification } | { "method": "item/fileChange/outputDelta", "params": FileChangeOutputDeltaNotification } | { "method": "item/mcpToolCall/progress", "params": McpToolCallProgressNotification } | { "method": "mcpServer/oauthLogin/completed", "params": McpServerOauthLoginCompletedNotification } | { "method": "account/updated", "params": AccountUpdatedNotification } | { "method": "account/rateLimits/updated", "params": AccountRateLimitsUpdatedNotification } | { "method": "app/list/updated", "params": AppListUpdatedNotification } | { "method": "item/reasoning/summaryTextDelta", "params": ReasoningSummaryTextDeltaNotification } | { "method": "item/reasoning/summaryPartAdded", "params": ReasoningSummaryPartAddedNotification } | { "method": "item/reasoning/textDelta", "params": ReasoningTextDeltaNotification } | { "method": "thread/compacted", "params": ContextCompactedNotification } | { "method": "model/rerouted", "params": ModelReroutedNotification } | { "method": "deprecationNotice", "params": DeprecationNoticeNotification } | { "method": "configWarning", "params": ConfigWarningNotification } | { "method": "fuzzyFileSearch/sessionUpdated", "params": FuzzyFileSearchSessionUpdatedNotification } | { "method": "fuzzyFileSearch/sessionCompleted", "params": FuzzyFileSearchSessionCompletedNotification } | { "method": "windows/worldWritableWarning", "params": WindowsWorldWritableWarningNotification } | { "method": "account/login/completed", "params": AccountLoginCompletedNotification } | { "method": "authStatusChange", "params": AuthStatusChangeNotification } | { "method": "loginChatGptComplete", "params": LoginChatGptCompleteNotification } | { "method": "sessionConfigured", "params": SessionConfiguredNotification };
+export type ServerNotification = { "method": "error", "params": ErrorNotification } | { "method": "thread/started", "params": ThreadStartedNotification } | { "method": "thread/archived", "params": ThreadArchivedNotification } | { "method": "thread/unarchived", "params": ThreadUnarchivedNotification } | { "method": "thread/name/updated", "params": ThreadNameUpdatedNotification } | { "method": "thread/tokenUsage/updated", "params": ThreadTokenUsageUpdatedNotification } | { "method": "turn/started", "params": TurnStartedNotification } | { "method": "turn/completed", "params": TurnCompletedNotification } | { "method": "turn/diff/updated", "params": TurnDiffUpdatedNotification } | { "method": "turn/plan/updated", "params": TurnPlanUpdatedNotification } | { "method": "item/started", "params": ItemStartedNotification } | { "method": "item/completed", "params": ItemCompletedNotification } | { "method": "rawResponseItem/completed", "params": RawResponseItemCompletedNotification } | { "method": "item/agentMessage/delta", "params": AgentMessageDeltaNotification } | { "method": "item/plan/delta", "params": PlanDeltaNotification } | { "method": "item/commandExecution/outputDelta", "params": CommandExecutionOutputDeltaNotification } | { "method": "item/commandExecution/terminalInteraction", "params": TerminalInteractionNotification } | { "method": "item/fileChange/outputDelta", "params": FileChangeOutputDeltaNotification } | { "method": "item/mcpToolCall/progress", "params": McpToolCallProgressNotification } | { "method": "mcpServer/oauthLogin/completed", "params": McpServerOauthLoginCompletedNotification } | { "method": "account/updated", "params": AccountUpdatedNotification } | { "method": "account/rateLimits/updated", "params": AccountRateLimitsUpdatedNotification } | { "method": "app/list/updated", "params": AppListUpdatedNotification } | { "method": "item/reasoning/summaryTextDelta", "params": ReasoningSummaryTextDeltaNotification } | { "method": "item/reasoning/summaryPartAdded", "params": ReasoningSummaryPartAddedNotification } | { "method": "item/reasoning/textDelta", "params": ReasoningTextDeltaNotification } | { "method": "thread/compacted", "params": ContextCompactedNotification } | { "method": "model/rerouted", "params": ModelReroutedNotification } | { "method": "deprecationNotice", "params": DeprecationNoticeNotification } | { "method": "configWarning", "params": ConfigWarningNotification } | { "method": "fuzzyFileSearch/sessionUpdated", "params": FuzzyFileSearchSessionUpdatedNotification } | { "method": "fuzzyFileSearch/sessionCompleted", "params": FuzzyFileSearchSessionCompletedNotification } | { "method": "windows/worldWritableWarning", "params": WindowsWorldWritableWarningNotification } | { "method": "account/login/completed", "params": AccountLoginCompletedNotification } | { "method": "authStatusChange", "params": AuthStatusChangeNotification } | { "method": "loginChatGptComplete", "params": LoginChatGptCompleteNotification } | { "method": "sessionConfigured", "params": SessionConfiguredNotification };

codex-rs/app-server-protocol/schema/typescript/v2/ThreadArchivedNotification.ts

@@ -0,0 +1,5 @@
+// GENERATED CODE! DO NOT MODIFY BY HAND!
+
+// This file was generated by [ts-rs](https://github.com/Aleph-Alpha/ts-rs). Do not edit this file manually.
+
+export type ThreadArchivedNotification = { threadId: string, };

codex-rs/app-server-protocol/schema/typescript/v2/ThreadUnarchivedNotification.ts

@@ -0,0 +1,5 @@
+// GENERATED CODE! DO NOT MODIFY BY HAND!
+
+// This file was generated by [ts-rs](https://github.com/Aleph-Alpha/ts-rs). Do not edit this file manually.
+
+export type ThreadUnarchivedNotification = { threadId: string, };

codex-rs/app-server-protocol/schema/typescript/v2/index.ts

@@ -147,6 +147,7 @@ export type { TextRange } from "./TextRange";
 export type { Thread } from "./Thread";
 export type { ThreadArchiveParams } from "./ThreadArchiveParams";
 export type { ThreadArchiveResponse } from "./ThreadArchiveResponse";
+export type { ThreadArchivedNotification } from "./ThreadArchivedNotification";
 export type { ThreadCompactStartParams } from "./ThreadCompactStartParams";
 export type { ThreadCompactStartResponse } from "./ThreadCompactStartResponse";
 export type { ThreadForkParams } from "./ThreadForkParams";
@@ -174,6 +175,7 @@ export type { ThreadTokenUsage } from "./ThreadTokenUsage";
 export type { ThreadTokenUsageUpdatedNotification } from "./ThreadTokenUsageUpdatedNotification";
 export type { ThreadUnarchiveParams } from "./ThreadUnarchiveParams";
 export type { ThreadUnarchiveResponse } from "./ThreadUnarchiveResponse";
+export type { ThreadUnarchivedNotification } from "./ThreadUnarchivedNotification";
 export type { TokenUsageBreakdown } from "./TokenUsageBreakdown";
 export type { ToolRequestUserInputAnswer } from "./ToolRequestUserInputAnswer";
 export type { ToolRequestUserInputOption } from "./ToolRequestUserInputOption";

codex-rs/app-server-protocol/src/protocol/common.rs

@@ -769,6 +769,8 @@ server_notification_definitions! {
     /// NEW NOTIFICATIONS
     Error => "error" (v2::ErrorNotification),
     ThreadStarted => "thread/started" (v2::ThreadStartedNotification),
+    ThreadArchived => "thread/archived" (v2::ThreadArchivedNotification),
+    ThreadUnarchived => "thread/unarchived" (v2::ThreadUnarchivedNotification),
     ThreadNameUpdated => "thread/name/updated" (v2::ThreadNameUpdatedNotification),
     ThreadTokenUsageUpdated => "thread/tokenUsage/updated" (v2::ThreadTokenUsageUpdatedNotification),
     TurnStarted => "turn/started" (v2::TurnStartedNotification),

codex-rs/app-server-protocol/src/protocol/v2.rs

@@ -2913,6 +2913,20 @@ pub struct ThreadStartedNotification {
     pub thread: Thread,
 }
 
+#[derive(Serialize, Deserialize, Debug, Clone, PartialEq, JsonSchema, TS)]
+#[serde(rename_all = "camelCase")]
+#[ts(export_to = "v2/")]
+pub struct ThreadArchivedNotification {
+    pub thread_id: String,
+}
+
+#[derive(Serialize, Deserialize, Debug, Clone, PartialEq, JsonSchema, TS)]
+#[serde(rename_all = "camelCase")]
+#[ts(export_to = "v2/")]
+pub struct ThreadUnarchivedNotification {
+    pub thread_id: String,
+}
+
 #[derive(Serialize, Deserialize, Debug, Clone, PartialEq, JsonSchema, TS)]
 #[serde(rename_all = "camelCase")]
 #[ts(export_to = "v2/")]

codex-rs/app-server/README.md

@@ -120,9 +120,9 @@ Example with notification opt-out:
 - `thread/list` — page through stored rollouts; supports cursor-based pagination and optional `modelProviders`, `sourceKinds`, `archived`, and `cwd` filters.
 - `thread/loaded/list` — list the thread ids currently loaded in memory.
 - `thread/read` — read a stored thread by id without resuming it; optionally include turns via `includeTurns`.
-- `thread/archive` — move a thread’s rollout file into the archived directory; returns `{}` on success.
+- `thread/archive` — move a thread’s rollout file into the archived directory; returns `{}` on success and emits `thread/archived`.
 - `thread/name/set` — set or update a thread’s user-facing name; returns `{}` on success. Thread names are not required to be unique; name lookups resolve to the most recently updated thread.
-- `thread/unarchive` — move an archived rollout file back into the sessions directory; returns the restored `thread` on success.
+- `thread/unarchive` — move an archived rollout file back into the sessions directory; returns the restored `thread` on success and emits `thread/unarchived`.
 - `thread/compact/start` — trigger conversation history compaction for a thread; returns `{}` immediately while progress streams through standard turn/item notifications.
 - `thread/backgroundTerminals/clean` — terminate all running background terminals for a thread (experimental; requires `capabilities.experimentalApi`); returns `{}` when the cleanup request is accepted.
 - `thread/rollback` — drop the last N turns from the agent’s in-memory context and persist a rollback marker in the rollout so future resumes see the pruned history; returns the updated `thread` (with `turns` populated) on success.
@@ -274,6 +274,7 @@ Use `thread/archive` to move the persisted rollout (stored as a JSONL file on di
 ```json
 { "method": "thread/archive", "id": 21, "params": { "threadId": "thr_b" } }
 { "id": 21, "result": {} }
+{ "method": "thread/archived", "params": { "threadId": "thr_b" } }
 ```
 
 An archived thread will not appear in `thread/list` unless `archived` is set to `true`.
@@ -285,6 +286,7 @@ Use `thread/unarchive` to move an archived rollout back into the sessions direct
 ```json
 { "method": "thread/unarchive", "id": 24, "params": { "threadId": "thr_b" } }
 { "id": 24, "result": { "thread": { "id": "thr_b" } } }
+{ "method": "thread/unarchived", "params": { "threadId": "thr_b" } }
 ```
 
 ### Example: Trigger thread compaction
@@ -519,7 +521,7 @@ Notes:
 
 ## Events
 
-Event notifications are the server-initiated event stream for thread lifecycles, turn lifecycles, and the items within them. After you start or resume a thread, keep reading stdout for `thread/started`, `turn/*`, and `item/*` notifications.
+Event notifications are the server-initiated event stream for thread lifecycles, turn lifecycles, and the items within them. After you start or resume a thread, keep reading stdout for `thread/started`, `thread/archived`, `thread/unarchived`, `turn/*`, and `item/*` notifications.
 
 ### Notification opt-out
 

codex-rs/app-server/src/codex_message_processor.rs

@@ -122,6 +122,7 @@ use codex_app_server_protocol::SkillsRemoteWriteResponse;
 use codex_app_server_protocol::Thread;
 use codex_app_server_protocol::ThreadArchiveParams;
 use codex_app_server_protocol::ThreadArchiveResponse;
+use codex_app_server_protocol::ThreadArchivedNotification;
 use codex_app_server_protocol::ThreadBackgroundTerminalsCleanParams;
 use codex_app_server_protocol::ThreadBackgroundTerminalsCleanResponse;
 use codex_app_server_protocol::ThreadCompactStartParams;
@@ -147,6 +148,7 @@ use codex_app_server_protocol::ThreadStartResponse;
 use codex_app_server_protocol::ThreadStartedNotification;
 use codex_app_server_protocol::ThreadUnarchiveParams;
 use codex_app_server_protocol::ThreadUnarchiveResponse;
+use codex_app_server_protocol::ThreadUnarchivedNotification;
 use codex_app_server_protocol::Turn;
 use codex_app_server_protocol::TurnInterruptParams;
 use codex_app_server_protocol::TurnStartParams;
@@ -2126,10 +2128,17 @@ impl CodexMessageProcessor {
                 }
             };
 
+        let thread_id_str = thread_id.to_string();
         match self.archive_thread_common(thread_id, &rollout_path).await {
             Ok(()) => {
                 let response = ThreadArchiveResponse {};
                 self.outgoing.send_response(request_id, response).await;
+                let notification = ThreadArchivedNotification {
+                    thread_id: thread_id_str,
+                };
+                self.outgoing
+                    .send_server_notification(ServerNotification::ThreadArchived(notification))
+                    .await;
             }
             Err(err) => {
                 self.outgoing.send_error(request_id, err).await;
@@ -2335,8 +2344,13 @@ impl CodexMessageProcessor {
 
         match result {
             Ok(thread) => {
+                let thread_id = thread.id.clone();
                 let response = ThreadUnarchiveResponse { thread };
                 self.outgoing.send_response(request_id, response).await;
+                let notification = ThreadUnarchivedNotification { thread_id };
+                self.outgoing
+                    .send_server_notification(ServerNotification::ThreadUnarchived(notification))
+                    .await;
             }
             Err(err) => {
                 self.outgoing.send_error(request_id, err).await;

codex-rs/app-server/tests/suite/v2/thread_archive.rs

@@ -7,6 +7,7 @@ use codex_app_server_protocol::JSONRPCResponse;
 use codex_app_server_protocol::RequestId;
 use codex_app_server_protocol::ThreadArchiveParams;
 use codex_app_server_protocol::ThreadArchiveResponse;
+use codex_app_server_protocol::ThreadArchivedNotification;
 use codex_app_server_protocol::ThreadStartParams;
 use codex_app_server_protocol::ThreadStartResponse;
 use codex_app_server_protocol::TurnStartParams;
@@ -14,6 +15,7 @@ use codex_app_server_protocol::TurnStartResponse;
 use codex_app_server_protocol::UserInput;
 use codex_core::ARCHIVED_SESSIONS_SUBDIR;
 use codex_core::find_thread_path_by_id_str;
+use pretty_assertions::assert_eq;
 use std::path::Path;
 use tempfile::TempDir;
 use tokio::time::timeout;
@@ -122,6 +124,17 @@ async fn thread_archive_requires_materialized_rollout() -> Result<()> {
     )
     .await??;
     let _: ThreadArchiveResponse = to_response::<ThreadArchiveResponse>(archive_resp)?;
+    let archive_notification = timeout(
+        DEFAULT_READ_TIMEOUT,
+        mcp.read_stream_until_notification_message("thread/archived"),
+    )
+    .await??;
+    let archived_notification: ThreadArchivedNotification = serde_json::from_value(
+        archive_notification
+            .params
+            .expect("thread/archived notification params"),
+    )?;
+    assert_eq!(archived_notification.thread_id, thread.id);
 
     // Verify file moved.
     let archived_directory = codex_home.path().join(ARCHIVED_SESSIONS_SUBDIR);

codex-rs/app-server/tests/suite/v2/thread_unarchive.rs

@@ -10,11 +10,13 @@ use codex_app_server_protocol::ThreadStartParams;
 use codex_app_server_protocol::ThreadStartResponse;
 use codex_app_server_protocol::ThreadUnarchiveParams;
 use codex_app_server_protocol::ThreadUnarchiveResponse;
+use codex_app_server_protocol::ThreadUnarchivedNotification;
 use codex_app_server_protocol::TurnStartParams;
 use codex_app_server_protocol::TurnStartResponse;
 use codex_app_server_protocol::UserInput;
 use codex_core::find_archived_thread_path_by_id_str;
 use codex_core::find_thread_path_by_id_str;
+use pretty_assertions::assert_eq;
 use std::fs::FileTimes;
 use std::fs::OpenOptions;
 use std::path::Path;
@@ -120,6 +122,17 @@ async fn thread_unarchive_moves_rollout_back_into_sessions_directory() -> Result
     let ThreadUnarchiveResponse {
         thread: unarchived_thread,
     } = to_response::<ThreadUnarchiveResponse>(unarchive_resp)?;
+    let unarchive_notification = timeout(
+        DEFAULT_READ_TIMEOUT,
+        mcp.read_stream_until_notification_message("thread/unarchived"),
+    )
+    .await??;
+    let unarchived_notification: ThreadUnarchivedNotification = serde_json::from_value(
+        unarchive_notification
+            .params
+            .expect("thread/unarchived notification params"),
+    )?;
+    assert_eq!(unarchived_notification.thread_id, thread.id);
     assert!(
         unarchived_thread.updated_at > old_timestamp,
         "expected updated_at to be bumped on unarchive"