diff --git a/codex-rs/app-server-protocol/src/protocol/v2/item.rs b/codex-rs/app-server-protocol/src/protocol/v2/item.rs
index 16e74ef165..fa3e73e2d8 100644
--- a/codex-rs/app-server-protocol/src/protocol/v2/item.rs
+++ b/codex-rs/app-server-protocol/src/protocol/v2/item.rs
@@ -640,11 +640,18 @@ impl From<CoreGuardianAssessmentAction> for GuardianApprovalReviewAction {
                 environment_id,
                 cwd,
                 files,
-            } => Self::ApplyPatch {
-                environment_id: Some(environment_id),
-                cwd,
-                files,
-            },
+            } => {
+                let environment_id = if environment_id.is_empty() {
+                    None
+                } else {
+                    Some(environment_id)
+                };
+                Self::ApplyPatch {
+                    environment_id,
+                    cwd,
+                    files,
+                }
+            }
             CoreGuardianAssessmentAction::NetworkAccess {
                 target,
                 host,
diff --git a/codex-rs/app-server-protocol/src/protocol/v2/tests.rs b/codex-rs/app-server-protocol/src/protocol/v2/tests.rs
index 47925b16ce..ceab904831 100644
--- a/codex-rs/app-server-protocol/src/protocol/v2/tests.rs
+++ b/codex-rs/app-server-protocol/src/protocol/v2/tests.rs
@@ -2160,6 +2160,51 @@ fn guardian_approval_review_action_round_trips_command_shape() {
     );
 }
 
+#[test]
+fn guardian_approval_review_action_round_trips_apply_patch_environment() {
+    let value = json!({
+        "type": "applyPatch",
+        "environmentId": "remote",
+        "cwd": absolute_path_string("tmp"),
+        "files": [absolute_path_string("tmp/example.txt")],
+    });
+    let action: GuardianApprovalReviewAction =
+        serde_json::from_value(value.clone()).expect("guardian review action");
+
+    assert_eq!(
+        action,
+        GuardianApprovalReviewAction::ApplyPatch {
+            environment_id: Some("remote".to_string()),
+            cwd: absolute_path("tmp"),
+            files: vec![absolute_path("tmp/example.txt")],
+        }
+    );
+    assert_eq!(
+        serde_json::to_value(&action).expect("serialize guardian review action"),
+        value
+    );
+}
+
+#[test]
+fn guardian_approval_review_action_accepts_legacy_apply_patch_environment() {
+    let value = json!({
+        "type": "applyPatch",
+        "cwd": absolute_path_string("tmp"),
+        "files": [absolute_path_string("tmp/example.txt")],
+    });
+    let action: GuardianApprovalReviewAction =
+        serde_json::from_value(value).expect("guardian review action");
+
+    assert_eq!(
+        action,
+        GuardianApprovalReviewAction::ApplyPatch {
+            environment_id: None,
+            cwd: absolute_path("tmp"),
+            files: vec![absolute_path("tmp/example.txt")],
+        }
+    );
+}
+
 #[test]
 fn network_requirements_deserializes_legacy_fields() {
     let requirements: NetworkRequirements = serde_json::from_value(json!({
diff --git a/codex-rs/app-server/src/bespoke_event_handling.rs b/codex-rs/app-server/src/bespoke_event_handling.rs
index 11ed1cb0bb..7b32ff7b2e 100644
--- a/codex-rs/app-server/src/bespoke_event_handling.rs
+++ b/codex-rs/app-server/src/bespoke_event_handling.rs
@@ -506,16 +506,18 @@ pub(crate) async fn apply_bespoke_event_handling(
                 .note_permission_requested(&conversation_id.to_string())
                 .await;
             let item_id = event.call_id.clone();
+            let environment_id = (!event.environment_id.is_empty()
+                && event.environment_id != codex_exec_server::LOCAL_ENVIRONMENT_ID)
+                .then_some(event.environment_id.clone());
+            let cwd = environment_id.as_ref().map(|_| event.cwd.clone());
 
             let params = FileChangeRequestApprovalParams {
                 thread_id: conversation_id.to_string(),
                 turn_id: event.turn_id.clone(),
                 item_id: item_id.clone(),
                 started_at_ms: event.started_at_ms,
-                environment_id: (!event.environment_id.is_empty()
-                    && event.environment_id != codex_exec_server::LOCAL_ENVIRONMENT_ID)
-                    .then_some(event.environment_id.clone()),
-                cwd: event.cwd.clone(),
+                environment_id,
+                cwd,
                 reason: event.reason.clone(),
                 grant_root: event.grant_root.clone(),
             };
diff --git a/codex-rs/core/src/guardian/approval_request.rs b/codex-rs/core/src/guardian/approval_request.rs
index a005a464dc..040e30f6b0 100644
--- a/codex-rs/core/src/guardian/approval_request.rs
+++ b/codex-rs/core/src/guardian/approval_request.rs
@@ -315,13 +315,23 @@ pub(crate) fn guardian_approval_request_to_json(
             cwd,
             files,
             patch,
-        } => Ok(serde_json::json!({
-            "tool": "apply_patch",
-            "environment_id": environment_id,
-            "cwd": cwd,
-            "files": files,
-            "patch": patch,
-        })),
+        } => {
+            let mut value = serde_json::json!({
+                "tool": "apply_patch",
+                "cwd": cwd,
+                "files": files,
+                "patch": patch,
+            });
+            if environment_id != codex_exec_server::LOCAL_ENVIRONMENT_ID
+                && let Value::Object(object) = &mut value
+            {
+                object.insert(
+                    "environment_id".to_string(),
+                    Value::String(environment_id.clone()),
+                );
+            }
+            Ok(value)
+        }
         GuardianApprovalRequest::NetworkAccess {
             id: _,
             turn_id: _,
@@ -404,7 +414,11 @@ pub(crate) fn guardian_assessment_action(
             files,
             ..
         } => GuardianAssessmentAction::ApplyPatch {
-            environment_id: environment_id.clone(),
+            environment_id: if environment_id == codex_exec_server::LOCAL_ENVIRONMENT_ID {
+                String::new()
+            } else {
+                environment_id.clone()
+            },
             cwd: cwd.clone(),
             files: files.clone(),
         },
diff --git a/codex-rs/core/src/guardian/tests.rs b/codex-rs/core/src/guardian/tests.rs
index 6a738a08bb..28b899b3ff 100644
--- a/codex-rs/core/src/guardian/tests.rs
+++ b/codex-rs/core/src/guardian/tests.rs
@@ -890,7 +890,25 @@ fn guardian_assessment_action_redacts_apply_patch_patch_text() {
         serde_json::to_value(guardian_assessment_action(&action)).expect("serialize action"),
         serde_json::json!({
             "type": "apply_patch",
-            "environment_id": "local",
+            "cwd": cwd,
+            "files": [file],
+        }),
+    );
+
+    let remote_action = GuardianApprovalRequest::ApplyPatch {
+        id: "patch-2".to_string(),
+        environment_id: "remote".to_string(),
+        cwd: cwd.clone(),
+        files: vec![file.clone()],
+        patch: "*** Begin Patch\n*** Update File: guardian.txt\n@@\n+secret\n*** End Patch"
+            .to_string(),
+    };
+
+    assert_eq!(
+        serde_json::to_value(guardian_assessment_action(&remote_action)).expect("serialize action"),
+        serde_json::json!({
+            "type": "apply_patch",
+            "environment_id": "remote",
             "cwd": cwd,
             "files": [file],
         }),
diff --git a/codex-rs/protocol/src/approvals.rs b/codex-rs/protocol/src/approvals.rs
index 768fbf1a5b..555d272697 100644
--- a/codex-rs/protocol/src/approvals.rs
+++ b/codex-rs/protocol/src/approvals.rs
@@ -147,7 +147,7 @@ pub enum GuardianAssessmentAction {
         cwd: AbsolutePathBuf,
     },
     ApplyPatch {
-        #[serde(default)]
+        #[serde(default, skip_serializing_if = "String::is_empty")]
         environment_id: String,
         cwd: AbsolutePathBuf,
         files: Vec<AbsolutePathBuf>,
diff --git a/codex-rs/tui/src/bottom_pane/snapshots/codex_tui__bottom_pane__approval_overlay__tests__approval_overlay_apply_patch_remote_prompt.snap b/codex-rs/tui/src/bottom_pane/snapshots/codex_tui__bottom_pane__approval_overlay__tests__approval_overlay_apply_patch_remote_prompt.snap
index 2cd8990d19..91990f9dbf 100644
--- a/codex-rs/tui/src/bottom_pane/snapshots/codex_tui__bottom_pane__approval_overlay__tests__approval_overlay_apply_patch_remote_prompt.snap
+++ b/codex-rs/tui/src/bottom_pane/snapshots/codex_tui__bottom_pane__approval_overlay__tests__approval_overlay_apply_patch_remote_prompt.snap
@@ -9,6 +9,7 @@ expression: rendered.as_str()
   Working directory: /tmp/remote-worktree
 
 › 1. Yes, proceed (y)
-  2. No, and tell Codex what to do differently (esc)
+  2. Yes, and don't ask again for these files (a)
+  3. No, and tell Codex what to do differently (esc)
 
   Press enter to confirm or esc to cancel