diff --git a/codex-rs/analytics/src/analytics_client_tests.rs b/codex-rs/analytics/src/analytics_client_tests.rs
index 5288a722f0..3f7950425b 100644
--- a/codex-rs/analytics/src/analytics_client_tests.rs
+++ b/codex-rs/analytics/src/analytics_client_tests.rs
@@ -1018,7 +1018,7 @@ fn sample_permissions_approval_request(request_id: i64) -> ServerRequest {
             item_id: "permissions-1".to_string(),
             environment_id: None,
             started_at_ms: 1_000,
-            cwd: test_path_buf("/tmp").abs(),
+            cwd: test_path_buf("/tmp").abs().into(),
             reason: Some("need network".to_string()),
             permissions: RequestPermissionProfile {
                 network: Some(codex_app_server_protocol::AdditionalNetworkPermissions {
diff --git a/codex-rs/app-server-protocol/schema/json/PermissionsRequestApprovalParams.json b/codex-rs/app-server-protocol/schema/json/PermissionsRequestApprovalParams.json
index 73329310c8..8d5298d096 100644
--- a/codex-rs/app-server-protocol/schema/json/PermissionsRequestApprovalParams.json
+++ b/codex-rs/app-server-protocol/schema/json/PermissionsRequestApprovalParams.json
@@ -1,10 +1,6 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
   "definitions": {
-    "AbsolutePathBuf": {
-      "description": "A path that is guaranteed to be absolute and normalized (though it is not guaranteed to be canonicalized or exist on the filesystem).\n\nIMPORTANT: When deserializing an `AbsolutePathBuf`, a base path must be set using [AbsolutePathBufGuard::new]. If no base path is set, the deserialization will fail unless the path being deserialized is already absolute.",
-      "type": "string"
-    },
     "AdditionalFileSystemPermissions": {
       "properties": {
         "entries": {
@@ -294,7 +290,7 @@
   },
   "properties": {
     "cwd": {
-      "$ref": "#/definitions/AbsolutePathBuf"
+      "$ref": "#/definitions/LegacyAppPathString"
     },
     "environmentId": {
       "default": null,
diff --git a/codex-rs/app-server-protocol/schema/json/ServerRequest.json b/codex-rs/app-server-protocol/schema/json/ServerRequest.json
index 242ee4c3b0..3b849cabaa 100644
--- a/codex-rs/app-server-protocol/schema/json/ServerRequest.json
+++ b/codex-rs/app-server-protocol/schema/json/ServerRequest.json
@@ -1,10 +1,6 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
   "definitions": {
-    "AbsolutePathBuf": {
-      "description": "A path that is guaranteed to be absolute and normalized (though it is not guaranteed to be canonicalized or exist on the filesystem).\n\nIMPORTANT: When deserializing an `AbsolutePathBuf`, a base path must be set using [AbsolutePathBufGuard::new]. If no base path is set, the deserialization will fail unless the path being deserialized is already absolute.",
-      "type": "string"
-    },
     "AdditionalFileSystemPermissions": {
       "properties": {
         "entries": {
@@ -1666,7 +1662,7 @@
     "PermissionsRequestApprovalParams": {
       "properties": {
         "cwd": {
-          "$ref": "#/definitions/AbsolutePathBuf"
+          "$ref": "#/definitions/LegacyAppPathString"
         },
         "environmentId": {
           "default": null,
diff --git a/codex-rs/app-server-protocol/schema/json/codex_app_server_protocol.schemas.json b/codex-rs/app-server-protocol/schema/json/codex_app_server_protocol.schemas.json
index 47e75d11d5..dd3be6a9a2 100644
--- a/codex-rs/app-server-protocol/schema/json/codex_app_server_protocol.schemas.json
+++ b/codex-rs/app-server-protocol/schema/json/codex_app_server_protocol.schemas.json
@@ -4272,7 +4272,7 @@
       "$schema": "http://json-schema.org/draft-07/schema#",
       "properties": {
         "cwd": {
-          "$ref": "#/definitions/v2/AbsolutePathBuf"
+          "$ref": "#/definitions/v2/LegacyAppPathString"
         },
         "environmentId": {
           "default": null,
diff --git a/codex-rs/app-server-protocol/schema/precomputed/app-server-exports-experimental.json.zst b/codex-rs/app-server-protocol/schema/precomputed/app-server-exports-experimental.json.zst
index 0488aa5363..22d68ad6c4 100644
Binary files a/codex-rs/app-server-protocol/schema/precomputed/app-server-exports-experimental.json.zst and b/codex-rs/app-server-protocol/schema/precomputed/app-server-exports-experimental.json.zst differ
diff --git a/codex-rs/app-server-protocol/schema/precomputed/app-server-exports-stable.json.zst b/codex-rs/app-server-protocol/schema/precomputed/app-server-exports-stable.json.zst
index 8779f99699..d8d0541d8a 100644
Binary files a/codex-rs/app-server-protocol/schema/precomputed/app-server-exports-stable.json.zst and b/codex-rs/app-server-protocol/schema/precomputed/app-server-exports-stable.json.zst differ
diff --git a/codex-rs/app-server-protocol/schema/typescript/v2/PermissionsRequestApprovalParams.ts b/codex-rs/app-server-protocol/schema/typescript/v2/PermissionsRequestApprovalParams.ts
index d0677f5f0c..71b39e2f6b 100644
--- a/codex-rs/app-server-protocol/schema/typescript/v2/PermissionsRequestApprovalParams.ts
+++ b/codex-rs/app-server-protocol/schema/typescript/v2/PermissionsRequestApprovalParams.ts
@@ -1,11 +1,11 @@
 // 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.
-import type { AbsolutePathBuf } from "../AbsolutePathBuf";
+import type { LegacyAppPathString } from "../LegacyAppPathString";
 import type { RequestPermissionProfile } from "./RequestPermissionProfile";
 
 export type PermissionsRequestApprovalParams = { threadId: string, turnId: string, itemId: string, environmentId: string | null,
 /**
  * Unix timestamp (in milliseconds) when this approval request started.
  */
-startedAtMs: number, cwd: AbsolutePathBuf, reason: string | null, permissions: RequestPermissionProfile, };
+startedAtMs: number, cwd: LegacyAppPathString, reason: string | null, permissions: RequestPermissionProfile, };
diff --git a/codex-rs/app-server-protocol/src/protocol/v2/permissions.rs b/codex-rs/app-server-protocol/src/protocol/v2/permissions.rs
index 38747f0ada..fd13791112 100644
--- a/codex-rs/app-server-protocol/src/protocol/v2/permissions.rs
+++ b/codex-rs/app-server-protocol/src/protocol/v2/permissions.rs
@@ -779,7 +779,7 @@ pub struct PermissionsRequestApprovalParams {
     /// Unix timestamp (in milliseconds) when this approval request started.
     #[ts(type = "number")]
     pub started_at_ms: i64,
-    pub cwd: AbsolutePathBuf,
+    pub cwd: LegacyAppPathString,
     pub reason: Option<String>,
     pub permissions: RequestPermissionProfile,
 }
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 971ef366e7..4144dac1c1 100644
--- a/codex-rs/app-server-protocol/src/protocol/v2/tests.rs
+++ b/codex-rs/app-server-protocol/src/protocol/v2/tests.rs
@@ -743,7 +743,10 @@ fn permissions_request_approval_uses_request_permission_profile() {
     }))
     .expect("permissions request should deserialize");
 
-    assert_eq!(params.cwd, absolute_path("repo"));
+    assert_eq!(
+        params.cwd,
+        LegacyAppPathString::from_abs_path(&absolute_path("repo"))
+    );
     assert_eq!(params.environment_id.as_deref(), Some("remote"));
     assert_eq!(
         params.permissions,
diff --git a/codex-rs/app-server/src/bespoke_event_handling.rs b/codex-rs/app-server/src/bespoke_event_handling.rs
index 91cda28b0a..e7017f4fb9 100644
--- a/codex-rs/app-server/src/bespoke_event_handling.rs
+++ b/codex-rs/app-server/src/bespoke_event_handling.rs
@@ -932,7 +932,9 @@ pub(crate) async fn apply_bespoke_event_handling(
                 .await;
             let request_cwd = match request.cwd {
                 Some(cwd) => cwd,
-                None => conversation.config_snapshot().await.cwd().clone(),
+                None => {
+                    LegacyAppPathString::from_abs_path(conversation.config_snapshot().await.cwd())
+                }
             };
             let params = PermissionsRequestApprovalParams {
                 thread_id: conversation_id.to_string(),
diff --git a/codex-rs/app-server/tests/suite/v2/request_permissions.rs b/codex-rs/app-server/tests/suite/v2/request_permissions.rs
index ab5d874671..d48bab3d1f 100644
--- a/codex-rs/app-server/tests/suite/v2/request_permissions.rs
+++ b/codex-rs/app-server/tests/suite/v2/request_permissions.rs
@@ -20,8 +20,8 @@ use codex_protocol::request_permissions::PermissionGrantScope as CorePermissionG
 use codex_protocol::request_permissions::RequestPermissionProfile;
 use codex_protocol::request_permissions::RequestPermissionsResponse;
 use codex_utils_path_uri::LegacyAppPathString;
+use codex_utils_path_uri::PathUri;
 use core_test_support::responses;
-use core_test_support::skip_if_wine_exec;
 use pretty_assertions::assert_eq;
 use serde_json::json;
 use tokio::time::timeout;
@@ -30,12 +30,6 @@ const DEFAULT_READ_TIMEOUT: std::time::Duration = std::time::Duration::from_secs
 
 #[tokio::test(flavor = "multi_thread", worker_threads = 4)]
 async fn request_permissions_round_trip() -> Result<()> {
-    // TODO(anp): Remove after tool routing accepts a target-native cwd on a different host OS.
-    skip_if_wine_exec!(
-        Ok(()),
-        "request_permissions currently rejects the target-native Windows cwd on the Linux host"
-    );
-
     let codex_home = tempfile::TempDir::new()?;
     let project_root_entry = json!({
         "path": {
@@ -112,7 +106,13 @@ async fn request_permissions_round_trip() -> Result<()> {
     assert_eq!(params.thread_id, thread.id);
     assert_eq!(params.turn_id, turn.id);
     assert_eq!(params.item_id, "call1");
-    assert!(params.cwd.as_path().is_absolute());
+    assert_eq!(params.cwd.as_str(), cwd.inferred_native_path_string());
+    let request_cwd: PathUri = params
+        .cwd
+        .clone()
+        .try_into()
+        .expect("request cwd should remain target-native");
+    assert_eq!(request_cwd, cwd);
     assert_eq!(params.reason, Some("Select a workspace root".to_string()));
     let requested_file_system = params
         .permissions
diff --git a/codex-rs/core/src/session/mod.rs b/codex-rs/core/src/session/mod.rs
index 7d61a5523b..1a81fdb6ca 100644
--- a/codex-rs/core/src/session/mod.rs
+++ b/codex-rs/core/src/session/mod.rs
@@ -2891,19 +2891,6 @@ impl Session {
             return Some(response);
         }
 
-        // The interactive approval event remains host-native until its public
-        // app-server/TUI boundary migrates in the next stack stage.
-        let Ok(native_cwd) = cwd.to_abs_path() else {
-            warn!(
-                cwd = %cwd,
-                "request_permissions interactive approval requires a cwd native to the Codex host"
-            );
-            return Some(RequestPermissionsResponse {
-                permissions: RequestPermissionProfile::default(),
-                scope: PermissionGrantScope::Turn,
-                strict_auto_review: false,
-            });
-        };
         let _elicitation = self.services.elicitations.register();
         let (tx_response, rx_response) = oneshot::channel();
         let prev_entry = {
@@ -2934,7 +2921,7 @@ impl Session {
             started_at_ms: now_unix_timestamp_ms(),
             reason: args.reason,
             permissions: requested_permissions,
-            cwd: Some(native_cwd),
+            cwd: Some(cwd.clone().into()),
         });
         self.send_event(turn_context.as_ref(), event).await;
         tokio::select! {
diff --git a/codex-rs/core/src/session/tests.rs b/codex-rs/core/src/session/tests.rs
index 21c838666b..75dd964962 100644
--- a/codex-rs/core/src/session/tests.rs
+++ b/codex-rs/core/src/session/tests.rs
@@ -7353,7 +7353,7 @@ async fn request_permissions_emits_event_when_granular_policy_allows_requests()
     );
     #[allow(deprecated)]
     let turn_cwd = turn_context.cwd.clone();
-    assert_eq!(request.cwd, Some(turn_cwd));
+    assert_eq!(request.cwd, Some(turn_cwd.into()));
 
     session
         .notify_request_permissions_response(&request.call_id, expected_response.clone())
@@ -7608,7 +7608,8 @@ async fn request_permissions_response_materializes_session_cwd_grants_before_rec
         request.environment_id.as_deref(),
         Some(codex_exec_server::LOCAL_ENVIRONMENT_ID)
     );
-    let request_cwd = request.cwd.clone().expect("request cwd");
+    let request_cwd =
+        PathUri::try_from(request.cwd.clone().expect("request cwd")).expect("request cwd URI");
 
     session
         .notify_request_permissions_response(
@@ -7622,7 +7623,7 @@ async fn request_permissions_response_materializes_session_cwd_grants_before_rec
         .await;
 
     let expected_permissions = RequestPermissionProfile {
-        file_system: Some(FileSystemPermissions::from_read_write_roots(
+        file_system: Some(FileSystemPermissions::from_read_write_path_uris(
             /*read*/ None,
             Some(vec![request_cwd]),
         )),
diff --git a/codex-rs/core/tests/suite/remote_env.rs b/codex-rs/core/tests/suite/remote_env.rs
index 3a57c09041..5484c90d12 100644
--- a/codex-rs/core/tests/suite/remote_env.rs
+++ b/codex-rs/core/tests/suite/remote_env.rs
@@ -3287,7 +3287,16 @@ async fn remote_request_permissions_grant_unblocks_later_remote_exec() -> Result
         request.environment_id.as_deref(),
         Some(REMOTE_ENVIRONMENT_ID)
     );
-    assert_eq!(request.cwd.as_ref(), Some(&remote_cwd));
+    let request_cwd = request.cwd.expect("request cwd");
+    let expected_cwd = PathUri::from_abs_path(&remote_cwd);
+    assert_eq!(
+        request_cwd.as_str(),
+        expected_cwd.inferred_native_path_string()
+    );
+    let request_cwd: PathUri = request_cwd
+        .try_into()
+        .expect("request cwd should remain target-native");
+    assert_eq!(request_cwd, expected_cwd);
     assert_eq!(request.permissions, expected_permissions);
 
     test.codex
diff --git a/codex-rs/protocol/src/request_permissions.rs b/codex-rs/protocol/src/request_permissions.rs
index f9ade7d149..5aa9711b82 100644
--- a/codex-rs/protocol/src/request_permissions.rs
+++ b/codex-rs/protocol/src/request_permissions.rs
@@ -1,7 +1,7 @@
 use crate::models::AdditionalPermissionProfile;
 use crate::models::FileSystemPermissions;
 use crate::models::NetworkPermissions;
-use codex_utils_absolute_path::AbsolutePathBuf;
+use codex_utils_path_uri::LegacyAppPathString;
 use schemars::JsonSchema;
 use serde::Deserialize;
 use serde::Serialize;
@@ -95,5 +95,5 @@ pub struct RequestPermissionsEvent {
     pub permissions: RequestPermissionProfile,
     #[serde(default, skip_serializing_if = "Option::is_none")]
     #[ts(optional)]
-    pub cwd: Option<AbsolutePathBuf>,
+    pub cwd: Option<LegacyAppPathString>,
 }
diff --git a/codex-rs/tui/src/app/app_server_requests.rs b/codex-rs/tui/src/app/app_server_requests.rs
index 7598bbbca2..64ebda4f88 100644
--- a/codex-rs/tui/src/app/app_server_requests.rs
+++ b/codex-rs/tui/src/app/app_server_requests.rs
@@ -626,7 +626,7 @@ mod tests {
                     item_id: "perm-1".to_string(),
                     environment_id: None,
                     started_at_ms: 0,
-                    cwd,
+                    cwd: cwd.into(),
                     reason: None,
                     permissions,
                 },
@@ -666,7 +666,7 @@ mod tests {
                     item_id: "perm-1".to_string(),
                     environment_id: None,
                     started_at_ms: 0,
-                    cwd: absolute_path(if cfg!(windows) { r"C:\tmp" } else { "/tmp" }),
+                    cwd: absolute_path(if cfg!(windows) { r"C:\tmp" } else { "/tmp" }).into(),
                     reason: None,
                     permissions: serde_json::from_value(json!({
                         "network": { "enabled": null }
diff --git a/codex-rs/tui/src/app/tests.rs b/codex-rs/tui/src/app/tests.rs
index b18e06a4b9..971adc1f08 100644
--- a/codex-rs/tui/src/app/tests.rs
+++ b/codex-rs/tui/src/app/tests.rs
@@ -3809,7 +3809,7 @@ async fn inactive_thread_permissions_approval_preserves_file_system_permissions(
             item_id: "call-approval".to_string(),
             environment_id: Some("remote".to_string()),
             started_at_ms: 0,
-            cwd: test_absolute_path("/tmp"),
+            cwd: test_absolute_path("/tmp").into(),
             reason: Some("Need access to .git".to_string()),
             permissions: codex_app_server_protocol::RequestPermissionProfile {
                 network: Some(AdditionalNetworkPermissions {
diff --git a/codex-rs/tui/src/chatwidget/tests/approval_requests.rs b/codex-rs/tui/src/chatwidget/tests/approval_requests.rs
index 2d33e50c74..26d83f4357 100644
--- a/codex-rs/tui/src/chatwidget/tests/approval_requests.rs
+++ b/codex-rs/tui/src/chatwidget/tests/approval_requests.rs
@@ -335,7 +335,7 @@ fn app_server_request_permissions_preserves_file_system_permissions() {
         item_id: "item-1".to_string(),
         environment_id: Some("remote".to_string()),
         started_at_ms: 0,
-        cwd: cwd.clone(),
+        cwd: cwd.clone().into(),
         reason: Some("Select a workspace root".to_string()),
         permissions: codex_app_server_protocol::RequestPermissionProfile {
             network: Some(AppServerAdditionalNetworkPermissions {
@@ -363,7 +363,7 @@ fn app_server_request_permissions_preserves_file_system_permissions() {
             )),
         }
     );
-    assert_eq!(request.cwd, Some(cwd));
+    assert_eq!(request.cwd, Some(cwd.into()));
     assert_eq!(request.environment_id.as_deref(), Some("remote"));
 }