diff --git a/codex-rs/core/src/config/mod.rs b/codex-rs/core/src/config/mod.rs
index 6e9358806f..4fcaf7dadb 100644
--- a/codex-rs/core/src/config/mod.rs
+++ b/codex-rs/core/src/config/mod.rs
@@ -449,16 +449,12 @@ impl Permissions {
         self.permission_profile_state.profile_workspace_roots()
     }
 
-    fn materialized_permission_profile(&self) -> PermissionProfile {
-        self.permission_profile()
-            .clone()
-            .materialize_project_roots_with_workspace_roots(&self.workspace_roots)
-    }
-
     /// Effective runtime permissions after config requirements and runtime
     /// workspace-root materialization have been applied.
     pub fn effective_permission_profile(&self) -> PermissionProfile {
-        self.materialized_permission_profile()
+        self.permission_profile()
+            .clone()
+            .materialize_project_roots_with_workspace_roots(&self.workspace_roots)
     }
 
     /// Named profile selected by config, if the current profile has one.
@@ -468,7 +464,7 @@ impl Permissions {
 
     /// Effective filesystem sandbox policy derived from the canonical profile.
     pub fn file_system_sandbox_policy(&self) -> FileSystemSandboxPolicy {
-        self.materialized_permission_profile()
+        self.effective_permission_profile()
             .file_system_sandbox_policy()
     }
 
@@ -479,7 +475,7 @@ impl Permissions {
 
     /// Legacy compatibility projection derived from the canonical profile.
     pub fn legacy_sandbox_policy(&self, cwd: &Path) -> SandboxPolicy {
-        let permission_profile = self.materialized_permission_profile();
+        let permission_profile = self.effective_permission_profile();
         compatibility_sandbox_policy_for_permission_profile(&permission_profile, cwd)
     }
 
diff --git a/codex-rs/core/src/exec.rs b/codex-rs/core/src/exec.rs
index 0a0364da37..4e760db02d 100644
--- a/codex-rs/core/src/exec.rs
+++ b/codex-rs/core/src/exec.rs
@@ -30,7 +30,6 @@ use codex_protocol::error::SandboxErr;
 use codex_protocol::exec_output::ExecToolCallOutput;
 use codex_protocol::exec_output::StreamOutput;
 use codex_protocol::models::PermissionProfile;
-use codex_protocol::permissions::FileSystemSandboxPolicy;
 use codex_protocol::permissions::NetworkSandboxPolicy;
 use codex_protocol::protocol::Event;
 use codex_protocol::protocol::EventMsg;
@@ -115,14 +114,12 @@ pub enum ExecCapturePolicy {
 }
 
 fn select_process_exec_tool_sandbox_type(
-    file_system_sandbox_policy: &FileSystemSandboxPolicy,
-    network_sandbox_policy: NetworkSandboxPolicy,
+    permission_profile: &PermissionProfile,
     windows_sandbox_level: codex_protocol::config_types::WindowsSandboxLevel,
     enforce_managed_network: bool,
 ) -> SandboxType {
     SandboxManager::new().select_initial(
-        file_system_sandbox_policy,
-        network_sandbox_policy,
+        permission_profile,
         SandboxablePreference::Auto,
         windows_sandbox_level,
         enforce_managed_network,
@@ -345,11 +342,8 @@ pub fn build_exec_request(
     } = params;
 
     let enforce_managed_network = network.is_some();
-    let (file_system_sandbox_policy, network_sandbox_policy) =
-        permission_profile.to_runtime_permissions();
     let sandbox_type = select_process_exec_tool_sandbox_type(
-        &file_system_sandbox_policy,
-        network_sandbox_policy,
+        permission_profile,
         windows_sandbox_level,
         enforce_managed_network,
     );
@@ -453,8 +447,6 @@ pub(crate) async fn execute_exec_request(
         windows_sandbox_level,
         windows_sandbox_private_desktop,
         permission_profile,
-        file_system_sandbox_policy: _,
-        network_sandbox_policy,
         windows_sandbox_filesystem_overrides,
         network_environment_id,
         arg0,
@@ -463,6 +455,7 @@ pub(crate) async fn execute_exec_request(
         exec_server_managed_network: _,
         exec_server_network_proxy: _,
     } = exec_request;
+    let network_sandbox_policy = permission_profile.network_sandbox_policy();
 
     // TODO(anp): Keep PathUri through the local process launch boundary.
     let cwd = cwd
diff --git a/codex-rs/core/src/exec_tests.rs b/codex-rs/core/src/exec_tests.rs
index 7a0af61fe8..0b4bd522f3 100644
--- a/codex-rs/core/src/exec_tests.rs
+++ b/codex-rs/core/src/exec_tests.rs
@@ -1,6 +1,7 @@
 use super::*;
 use codex_protocol::config_types::WindowsSandboxLevel;
 use codex_protocol::models::PermissionProfile;
+use codex_protocol::permissions::FileSystemSandboxPolicy;
 use codex_sandboxing::SandboxType;
 use core_test_support::PathBufExt;
 use core_test_support::PathExt;
@@ -1049,8 +1050,10 @@ fn process_exec_tool_call_uses_platform_sandbox_for_network_only_restrictions()
 
     assert_eq!(
         select_process_exec_tool_sandbox_type(
-            &FileSystemSandboxPolicy::unrestricted(),
-            NetworkSandboxPolicy::Restricted,
+            &PermissionProfile::from_runtime_permissions(
+                &FileSystemSandboxPolicy::unrestricted(),
+                NetworkSandboxPolicy::Restricted,
+            ),
             codex_protocol::config_types::WindowsSandboxLevel::Disabled,
             /*enforce_managed_network*/ false,
         ),
diff --git a/codex-rs/core/src/sandboxing/mod.rs b/codex-rs/core/src/sandboxing/mod.rs
index 9a59477709..db9159613f 100644
--- a/codex-rs/core/src/sandboxing/mod.rs
+++ b/codex-rs/core/src/sandboxing/mod.rs
@@ -22,8 +22,6 @@ use codex_protocol::config_types::WindowsSandboxLevel;
 use codex_protocol::exec_output::ExecToolCallOutput;
 use codex_protocol::models::PermissionProfile;
 pub use codex_protocol::models::SandboxPermissions;
-use codex_protocol::permissions::FileSystemSandboxPolicy;
-use codex_protocol::permissions::NetworkSandboxPolicy;
 use codex_sandboxing::SandboxExecRequest;
 use codex_sandboxing::SandboxType;
 use codex_sandboxing::WindowsSandboxFilesystemOverrides;
@@ -59,8 +57,6 @@ pub struct ExecRequest {
     pub windows_sandbox_level: WindowsSandboxLevel,
     pub windows_sandbox_private_desktop: bool,
     pub permission_profile: PermissionProfile,
-    pub file_system_sandbox_policy: FileSystemSandboxPolicy,
-    pub network_sandbox_policy: NetworkSandboxPolicy,
     pub(crate) windows_sandbox_filesystem_overrides: Option<WindowsSandboxFilesystemOverrides>,
     pub arg0: Option<String>,
     pub(crate) exec_server_sandbox: Option<FileSystemSandboxContext>,
@@ -88,8 +84,6 @@ impl ExecRequest {
     ) -> Self {
         let cwd = PathUri::from_abs_path(&cwd);
         let windows_sandbox_policy_cwd = cwd.clone();
-        let (file_system_sandbox_policy, network_sandbox_policy) =
-            permission_profile.to_runtime_permissions();
         Self {
             command,
             cwd,
@@ -105,8 +99,6 @@ impl ExecRequest {
             windows_sandbox_level,
             windows_sandbox_private_desktop,
             permission_profile,
-            file_system_sandbox_policy,
-            network_sandbox_policy,
             windows_sandbox_filesystem_overrides: None,
             arg0,
             exec_server_sandbox: None,
@@ -132,14 +124,14 @@ impl ExecRequest {
             windows_sandbox_level,
             windows_sandbox_private_desktop,
             permission_profile,
-            file_system_sandbox_policy,
-            network_sandbox_policy,
             arg0,
+            ..
         } = request;
         let ExecOptions {
             expiration,
             capture_policy,
         } = options;
+        let network_sandbox_policy = permission_profile.network_sandbox_policy();
         if !network_sandbox_policy.is_enabled() {
             env.insert(
                 CODEX_SANDBOX_NETWORK_DISABLED_ENV_VAR.to_string(),
@@ -165,8 +157,6 @@ impl ExecRequest {
             windows_sandbox_level,
             windows_sandbox_private_desktop,
             permission_profile,
-            file_system_sandbox_policy,
-            network_sandbox_policy,
             windows_sandbox_filesystem_overrides: None,
             arg0,
             exec_server_sandbox: None,
diff --git a/codex-rs/core/src/session/turn_context.rs b/codex-rs/core/src/session/turn_context.rs
index 70fe47fb5c..e500a9da22 100644
--- a/codex-rs/core/src/session/turn_context.rs
+++ b/codex-rs/core/src/session/turn_context.rs
@@ -16,8 +16,7 @@ use codex_protocol::protocol::MultiAgentVersion;
 use codex_protocol::protocol::ThreadHistoryMode;
 use codex_protocol::protocol::TurnEnvironmentSelection;
 use codex_sandboxing::compatibility_sandbox_policy_for_permission_profile;
-use codex_sandboxing::policy_transforms::effective_file_system_sandbox_policy;
-use codex_sandboxing::policy_transforms::effective_network_sandbox_policy;
+use codex_sandboxing::policy_transforms::effective_permission_profile;
 use codex_utils_path_uri::PathUri;
 use futures::FutureExt;
 use futures::future::BoxFuture;
@@ -335,22 +334,10 @@ impl TurnContext {
         additional_permissions: Option<AdditionalPermissionProfile>,
         environment: &TurnEnvironment,
     ) -> FileSystemSandboxContext {
-        let permission_profile = self.config.permissions.permission_profile();
-        let (base_file_system_sandbox_policy, base_network_sandbox_policy) =
-            permission_profile.to_runtime_permissions();
-        let file_system_sandbox_policy = effective_file_system_sandbox_policy(
-            &base_file_system_sandbox_policy,
+        let permissions = effective_permission_profile(
+            self.config.permissions.permission_profile(),
             additional_permissions.as_ref(),
         );
-        let network_sandbox_policy = effective_network_sandbox_policy(
-            base_network_sandbox_policy,
-            additional_permissions.as_ref(),
-        );
-        let permissions = PermissionProfile::from_runtime_permissions_with_enforcement(
-            permission_profile.enforcement(),
-            &file_system_sandbox_policy,
-            network_sandbox_policy,
-        );
         FileSystemSandboxContext {
             permissions: permissions.into(),
             cwd: Some(environment.cwd().clone()),
diff --git a/codex-rs/core/src/tasks/user_shell.rs b/codex-rs/core/src/tasks/user_shell.rs
index 4ce2201e35..3b5f352b0a 100644
--- a/codex-rs/core/src/tasks/user_shell.rs
+++ b/codex-rs/core/src/tasks/user_shell.rs
@@ -225,9 +225,7 @@ pub(crate) async fn execute_user_shell_command(
             .config
             .permissions
             .windows_sandbox_private_desktop,
-        permission_profile: permission_profile.clone(),
-        file_system_sandbox_policy: permission_profile.file_system_sandbox_policy(),
-        network_sandbox_policy: permission_profile.network_sandbox_policy(),
+        permission_profile,
         windows_sandbox_filesystem_overrides: None,
         arg0: None,
         exec_server_sandbox: None,
diff --git a/codex-rs/core/src/tools/handlers/unified_exec/exec_command.rs b/codex-rs/core/src/tools/handlers/unified_exec/exec_command.rs
index fc48f1ed81..3c2f6daf86 100644
--- a/codex-rs/core/src/tools/handlers/unified_exec/exec_command.rs
+++ b/codex-rs/core/src/tools/handlers/unified_exec/exec_command.rs
@@ -155,8 +155,7 @@ impl ExecCommandHandler {
         // permissions config below. Consult the configured platform-sandbox requirement before
         // deciding whether parsing may continue without that base path.
         let sandbox = SandboxManager::new().select_initial(
-            &turn.file_system_sandbox_policy(),
-            turn.network_sandbox_policy(),
+            &turn.permission_profile,
             SandboxablePreference::Auto,
             turn.windows_sandbox_level,
             turn.network.is_some(),
diff --git a/codex-rs/core/src/tools/orchestrator.rs b/codex-rs/core/src/tools/orchestrator.rs
index b154e1a140..073962db74 100644
--- a/codex-rs/core/src/tools/orchestrator.rs
+++ b/codex-rs/core/src/tools/orchestrator.rs
@@ -160,8 +160,7 @@ impl ToolOrchestrator {
         let permissions = permission_profile
             .clone()
             .materialize_project_roots_with_workspace_roots(&materialized_workspace_roots);
-        let (file_system_sandbox_policy, network_sandbox_policy) =
-            permissions.to_runtime_permissions();
+        let file_system_sandbox_policy = permissions.file_system_sandbox_policy();
         let requirement = tool.exec_approval_requirement(req).unwrap_or_else(|| {
             default_exec_approval_requirement(approval_policy, &file_system_sandbox_policy)
         });
@@ -235,16 +234,14 @@ impl ToolOrchestrator {
         let sandbox_requested = match sandbox_override {
             SandboxOverride::BypassSandboxFirstAttempt => false,
             SandboxOverride::NoOverride => self.sandbox.should_sandbox(
-                &file_system_sandbox_policy,
-                network_sandbox_policy,
+                &permissions,
                 sandbox_preference,
                 managed_network_active,
             ),
         };
         let initial_sandbox = if sandbox_requested {
             self.sandbox.select_initial(
-                &file_system_sandbox_policy,
-                network_sandbox_policy,
+                &permissions,
                 sandbox_preference,
                 turn_ctx.windows_sandbox_level,
                 managed_network_active,
@@ -423,15 +420,13 @@ impl ToolOrchestrator {
 
                 let retry_sandbox_requested = !unsandboxed_allowed
                     && self.sandbox.should_sandbox(
-                        &file_system_sandbox_policy,
-                        network_sandbox_policy,
+                        &permissions,
                         sandbox_preference,
                         managed_network_active,
                     );
                 let retry_sandbox = if retry_sandbox_requested {
                     self.sandbox.select_initial(
-                        &file_system_sandbox_policy,
-                        network_sandbox_policy,
+                        &permissions,
                         sandbox_preference,
                         turn_ctx.windows_sandbox_level,
                         managed_network_active,
diff --git a/codex-rs/core/src/tools/runtimes/shell/unix_escalation.rs b/codex-rs/core/src/tools/runtimes/shell/unix_escalation.rs
index 14a68c9df4..048d4debfa 100644
--- a/codex-rs/core/src/tools/runtimes/shell/unix_escalation.rs
+++ b/codex-rs/core/src/tools/runtimes/shell/unix_escalation.rs
@@ -36,8 +36,6 @@ use codex_protocol::exec_output::ExecToolCallOutput;
 use codex_protocol::exec_output::StreamOutput;
 use codex_protocol::models::AdditionalPermissionProfile;
 use codex_protocol::models::PermissionProfile;
-use codex_protocol::permissions::FileSystemSandboxPolicy;
-use codex_protocol::permissions::NetworkSandboxPolicy;
 use codex_protocol::protocol::AskForApproval;
 use codex_protocol::protocol::GuardianCommandSource;
 use codex_protocol::protocol::NetworkPolicyRuleAction;
@@ -160,8 +158,6 @@ pub(super) async fn try_run_zsh_fork(
         windows_sandbox_level,
         windows_sandbox_private_desktop: _windows_sandbox_private_desktop,
         permission_profile,
-        file_system_sandbox_policy,
-        network_sandbox_policy,
         windows_sandbox_filesystem_overrides: _windows_sandbox_filesystem_overrides,
         arg0,
         exec_server_sandbox: _,
@@ -189,8 +185,6 @@ pub(super) async fn try_run_zsh_fork(
         command,
         cwd: sandbox_cwd,
         permission_profile,
-        file_system_sandbox_policy,
-        network_sandbox_policy,
         sandbox,
         env: sandbox_env,
         network: sandbox_network,
@@ -240,7 +234,6 @@ pub(super) async fn try_run_zsh_fork(
         tool_name: GuardianCommandSource::Shell,
         approval_policy: ctx.turn.approval_policy.value(),
         permission_profile: command_executor.permission_profile.clone(),
-        file_system_sandbox_policy: command_executor.file_system_sandbox_policy.clone(),
         sandbox_permissions: req.sandbox_permissions,
         approval_sandbox_permissions,
         prompt_permissions: req.additional_permissions.clone(),
@@ -302,8 +295,6 @@ pub(crate) async fn prepare_unified_exec_zsh_fork(
         command: exec_request.command.clone(),
         cwd,
         permission_profile: exec_request.permission_profile.clone(),
-        file_system_sandbox_policy: exec_request.file_system_sandbox_policy.clone(),
-        network_sandbox_policy: exec_request.network_sandbox_policy,
         sandbox: exec_request.sandbox,
         env: exec_request.env.clone(),
         network: exec_request.network.clone(),
@@ -324,7 +315,6 @@ pub(crate) async fn prepare_unified_exec_zsh_fork(
         tool_name: GuardianCommandSource::UnifiedExec,
         approval_policy: ctx.turn.approval_policy.value(),
         permission_profile: exec_request.permission_profile.clone(),
-        file_system_sandbox_policy: exec_request.file_system_sandbox_policy.clone(),
         sandbox_permissions: req.sandbox_permissions,
         approval_sandbox_permissions: approval_sandbox_permissions(
             req.sandbox_permissions,
@@ -359,7 +349,6 @@ struct CoreShellActionProvider {
     tool_name: GuardianCommandSource,
     approval_policy: AskForApproval,
     permission_profile: PermissionProfile,
-    file_system_sandbox_policy: FileSystemSandboxPolicy,
     sandbox_permissions: SandboxPermissions,
     approval_sandbox_permissions: SandboxPermissions,
     prompt_permissions: Option<AdditionalPermissionProfile>,
@@ -404,13 +393,12 @@ impl CoreShellActionProvider {
     fn shell_request_escalation_execution(
         sandbox_permissions: SandboxPermissions,
         permission_profile: &PermissionProfile,
-        file_system_sandbox_policy: &FileSystemSandboxPolicy,
         additional_permissions: Option<&AdditionalPermissionProfile>,
     ) -> EscalationExecution {
         match sandbox_permissions {
             SandboxPermissions::UseDefault => EscalationExecution::TurnDefault,
             SandboxPermissions::RequireEscalated => {
-                if unsandboxed_execution_allowed(file_system_sandbox_policy) {
+                if unsandboxed_execution_allowed(&permission_profile.file_system_sandbox_policy()) {
                     EscalationExecution::Unsandboxed
                 } else {
                     EscalationExecution::TurnDefault
@@ -627,7 +615,8 @@ impl CoreShellActionProvider {
         // fallback function.
         let decision_driven_by_policy =
             Self::decision_driven_by_policy(&evaluation.matched_rules, evaluation.decision);
-        let unsandboxed_allowed = unsandboxed_execution_allowed(&self.file_system_sandbox_policy);
+        let unsandboxed_allowed =
+            unsandboxed_execution_allowed(&self.permission_profile.file_system_sandbox_policy());
         let needs_escalation = match self.sandbox_permissions {
             SandboxPermissions::UseDefault => unsandboxed_allowed && decision_driven_by_policy,
             SandboxPermissions::RequireEscalated => unsandboxed_allowed,
@@ -645,7 +634,6 @@ impl CoreShellActionProvider {
             DecisionSource::UnmatchedCommandFallback => Self::shell_request_escalation_execution(
                 self.sandbox_permissions,
                 &self.permission_profile,
-                &self.file_system_sandbox_policy,
                 self.prompt_permissions.as_ref(),
             ),
         };
@@ -777,8 +765,6 @@ struct CoreShellCommandExecutor {
     command: Vec<String>,
     cwd: AbsolutePathBuf,
     permission_profile: PermissionProfile,
-    file_system_sandbox_policy: FileSystemSandboxPolicy,
-    network_sandbox_policy: NetworkSandboxPolicy,
     sandbox: SandboxType,
     env: HashMap<String, String>,
     network: Option<codex_network_proxy::NetworkProxy>,
@@ -862,8 +848,6 @@ impl CoreShellCommandExecutor {
                 windows_sandbox_level: self.windows_sandbox_level,
                 windows_sandbox_private_desktop: false,
                 permission_profile: self.permission_profile.clone(),
-                file_system_sandbox_policy: self.file_system_sandbox_policy.clone(),
-                network_sandbox_policy: self.network_sandbox_policy,
                 windows_sandbox_filesystem_overrides: None,
                 arg0: self.arg0.clone(),
                 exec_server_sandbox: None,
@@ -958,15 +942,12 @@ impl CoreShellCommandExecutor {
             permission_profile,
             additional_permissions,
         } = params;
-        let (file_system_sandbox_policy, network_sandbox_policy) =
-            permission_profile.to_runtime_permissions();
         let (program, args) = command
             .split_first()
             .ok_or_else(|| anyhow::anyhow!("prepared command must not be empty"))?;
         let sandbox_manager = SandboxManager::new();
         let sandbox = sandbox_manager.select_initial(
-            &file_system_sandbox_policy,
-            network_sandbox_policy,
+            permission_profile,
             SandboxablePreference::Auto,
             self.windows_sandbox_level,
             self.network.is_some(),
diff --git a/codex-rs/core/src/tools/runtimes/shell/unix_escalation_tests.rs b/codex-rs/core/src/tools/runtimes/shell/unix_escalation_tests.rs
index e50406f15c..2c41f015ac 100644
--- a/codex-rs/core/src/tools/runtimes/shell/unix_escalation_tests.rs
+++ b/codex-rs/core/src/tools/runtimes/shell/unix_escalation_tests.rs
@@ -317,13 +317,15 @@ fn shell_request_escalation_execution_is_explicit() {
         &file_system_sandbox_policy,
         network_sandbox_policy,
     );
-    let read_only_file_system_policy = read_only_file_system_sandbox_policy();
+    let read_only_permission_profile = PermissionProfile::from_runtime_permissions(
+        &read_only_file_system_sandbox_policy(),
+        network_sandbox_policy,
+    );
 
     assert_eq!(
         CoreShellActionProvider::shell_request_escalation_execution(
             crate::sandboxing::SandboxPermissions::UseDefault,
             &permission_profile,
-            &file_system_sandbox_policy,
             /*additional_permissions*/ None,
         ),
         EscalationExecution::TurnDefault,
@@ -331,8 +333,7 @@ fn shell_request_escalation_execution_is_explicit() {
     assert_eq!(
         CoreShellActionProvider::shell_request_escalation_execution(
             crate::sandboxing::SandboxPermissions::RequireEscalated,
-            &permission_profile,
-            &read_only_file_system_policy,
+            &read_only_permission_profile,
             /*additional_permissions*/ None,
         ),
         EscalationExecution::Unsandboxed,
@@ -341,7 +342,6 @@ fn shell_request_escalation_execution_is_explicit() {
         CoreShellActionProvider::shell_request_escalation_execution(
             crate::sandboxing::SandboxPermissions::RequireEscalated,
             &permission_profile,
-            &file_system_sandbox_policy,
             /*additional_permissions*/ None,
         ),
         EscalationExecution::TurnDefault,
@@ -350,7 +350,6 @@ fn shell_request_escalation_execution_is_explicit() {
         CoreShellActionProvider::shell_request_escalation_execution(
             crate::sandboxing::SandboxPermissions::WithAdditionalPermissions,
             &permission_profile,
-            &file_system_sandbox_policy,
             Some(&requested_permissions),
         ),
         EscalationExecution::Permissions(EscalationPermissions::ResolvedPermissionProfile(
@@ -366,8 +365,6 @@ async fn unsandboxed_intercepted_exec_strips_managed_network_env() -> anyhow::Re
         command: Vec::new(),
         cwd: workdir.clone(),
         permission_profile: PermissionProfile::workspace_write(),
-        file_system_sandbox_policy: read_only_file_system_sandbox_policy(),
-        network_sandbox_policy: NetworkSandboxPolicy::Restricted,
         sandbox: SandboxType::None,
         env: HashMap::new(),
         network: None,
@@ -435,7 +432,6 @@ async fn preapproved_additional_permissions_escalate_intercepted_exec() -> anyho
         tool_name: GuardianCommandSource::Shell,
         approval_policy: AskForApproval::OnRequest,
         permission_profile: permission_profile.clone(),
-        file_system_sandbox_policy: read_only_file_system_sandbox_policy(),
         sandbox_permissions: SandboxPermissions::WithAdditionalPermissions,
         approval_sandbox_permissions: SandboxPermissions::UseDefault,
         prompt_permissions: Some(requested_permissions),
@@ -571,7 +567,6 @@ async fn execve_permission_request_hook_short_circuits_prompt() -> anyhow::Resul
         tool_name: GuardianCommandSource::Shell,
         approval_policy: AskForApproval::OnRequest,
         permission_profile: PermissionProfile::read_only(),
-        file_system_sandbox_policy: read_only_file_system_sandbox_policy(),
         sandbox_permissions: SandboxPermissions::RequireEscalated,
         approval_sandbox_permissions: SandboxPermissions::RequireEscalated,
         prompt_permissions: None,
@@ -782,7 +777,6 @@ prefix_rule(pattern = ["{cat_path_literal}"], decision = "allow")
         tool_name: GuardianCommandSource::Shell,
         approval_policy: AskForApproval::OnRequest,
         permission_profile,
-        file_system_sandbox_policy,
         sandbox_permissions: SandboxPermissions::UseDefault,
         approval_sandbox_permissions: SandboxPermissions::UseDefault,
         prompt_permissions: None,
@@ -825,7 +819,6 @@ async fn denied_reads_keep_granular_sandbox_rejection_for_escalation() -> anyhow
             mcp_elicitations: true,
         }),
         permission_profile,
-        file_system_sandbox_policy,
         sandbox_permissions: SandboxPermissions::RequireEscalated,
         approval_sandbox_permissions: SandboxPermissions::RequireEscalated,
         prompt_permissions: None,
diff --git a/codex-rs/core/src/unified_exec/process_manager_tests.rs b/codex-rs/core/src/unified_exec/process_manager_tests.rs
index 35c6a4e9aa..d2bce0fc2f 100644
--- a/codex-rs/core/src/unified_exec/process_manager_tests.rs
+++ b/codex-rs/core/src/unified_exec/process_manager_tests.rs
@@ -110,9 +110,6 @@ fn exec_server_params_use_path_uri_and_env_policy_overlay_contract() {
         .expect("current dir")
         .try_into()
         .expect("absolute path");
-    let file_system_sandbox_policy =
-        codex_protocol::permissions::FileSystemSandboxPolicy::unrestricted();
-    let network_sandbox_policy = codex_protocol::permissions::NetworkSandboxPolicy::Restricted;
     let permission_profile = codex_protocol::models::PermissionProfile::Disabled;
     let managed_network = ManagedNetworkSandboxContext {
         loopback_ports: vec![43123],
@@ -167,8 +164,6 @@ fn exec_server_params_use_path_uri_and_env_policy_overlay_contract() {
         windows_sandbox_level: codex_protocol::config_types::WindowsSandboxLevel::Disabled,
         windows_sandbox_private_desktop: false,
         permission_profile: permission_profile.clone(),
-        file_system_sandbox_policy,
-        network_sandbox_policy,
         windows_sandbox_filesystem_overrides: None,
         arg0: None,
         exec_server_sandbox: None,
diff --git a/codex-rs/exec-server/src/fs_sandbox.rs b/codex-rs/exec-server/src/fs_sandbox.rs
index e90205d9cf..26567f68cf 100644
--- a/codex-rs/exec-server/src/fs_sandbox.rs
+++ b/codex-rs/exec-server/src/fs_sandbox.rs
@@ -112,10 +112,8 @@ impl FileSystemSandboxRunner {
     ) -> Result<SandboxExecRequest, JSONRPCErrorError> {
         let helper = &self.runtime_paths.codex_self_exe;
         let sandbox_manager = SandboxManager::new();
-        let (file_system_policy, network_policy) = permission_profile.to_runtime_permissions();
         let sandbox = sandbox_manager.select_initial(
-            &file_system_policy,
-            network_policy,
+            permission_profile,
             SandboxablePreference::Auto,
             sandbox_context.windows_sandbox_level,
             /*has_managed_network_requirements*/ false,
diff --git a/codex-rs/exec-server/src/process_sandbox.rs b/codex-rs/exec-server/src/process_sandbox.rs
index 0c8327f585..133f4daf91 100644
--- a/codex-rs/exec-server/src/process_sandbox.rs
+++ b/codex-rs/exec-server/src/process_sandbox.rs
@@ -150,6 +150,7 @@ pub(crate) async fn prepare_exec_request(
         managed_mitm_ca_trust_bundle_path.as_ref(),
         native_sandbox_policy_cwd.as_path(),
     );
+    #[cfg(unix)]
     let (file_system_policy, network_policy) = permissions.to_runtime_permissions();
     #[cfg(unix)]
     let sandbox_helper_paths = params
@@ -179,8 +180,7 @@ pub(crate) async fn prepare_exec_request(
     );
     let sandbox_manager = SandboxManager::new();
     let sandbox = sandbox_manager.select_initial(
-        &file_system_policy,
-        network_policy,
+        &permissions,
         SandboxablePreference::Require,
         sandbox_context.windows_sandbox_level,
         params.enforce_managed_network,
diff --git a/codex-rs/sandboxing/src/manager.rs b/codex-rs/sandboxing/src/manager.rs
index c3c6294380..cf4cb90c8d 100644
--- a/codex-rs/sandboxing/src/manager.rs
+++ b/codex-rs/sandboxing/src/manager.rs
@@ -120,8 +120,6 @@ pub struct SandboxExecRequest {
     pub windows_sandbox_level: WindowsSandboxLevel,
     pub windows_sandbox_private_desktop: bool,
     pub permission_profile: PermissionProfile,
-    pub file_system_sandbox_policy: FileSystemSandboxPolicy,
-    pub network_sandbox_policy: NetworkSandboxPolicy,
     pub arg0: Option<String>,
 }
 
@@ -160,8 +158,6 @@ struct PendingSandboxedExecRequest {
     native_command_cwd: AbsolutePathBuf,
     native_sandbox_policy_cwd: AbsolutePathBuf,
     effective_permission_profile: PermissionProfile,
-    effective_file_system_policy: FileSystemSandboxPolicy,
-    effective_network_policy: NetworkSandboxPolicy,
 }
 
 impl PendingSandboxedExecRequest {
@@ -189,14 +185,10 @@ impl PendingSandboxedExecRequest {
             managed_mitm_ca_trust_bundle_path,
             native_sandbox_policy_cwd.as_path(),
         );
-        let (effective_file_system_policy, effective_network_policy) =
-            effective_permission_profile.to_runtime_permissions();
         Ok(Self {
             native_command_cwd,
             native_sandbox_policy_cwd,
             effective_permission_profile,
-            effective_file_system_policy,
-            effective_network_policy,
         })
     }
 }
@@ -279,18 +271,12 @@ impl SandboxManager {
 
     pub fn select_initial(
         &self,
-        file_system_policy: &FileSystemSandboxPolicy,
-        network_policy: NetworkSandboxPolicy,
+        permission_profile: &PermissionProfile,
         pref: SandboxablePreference,
         windows_sandbox_level: WindowsSandboxLevel,
         has_managed_network_requirements: bool,
     ) -> SandboxType {
-        if self.should_sandbox(
-            file_system_policy,
-            network_policy,
-            pref,
-            has_managed_network_requirements,
-        ) {
+        if self.should_sandbox(permission_profile, pref, has_managed_network_requirements) {
             get_platform_sandbox(windows_sandbox_level != WindowsSandboxLevel::Disabled)
                 .unwrap_or(SandboxType::None)
         } else {
@@ -302,19 +288,22 @@ impl SandboxManager {
     /// this host can provide a concrete sandbox implementation.
     pub fn should_sandbox(
         &self,
-        file_system_policy: &FileSystemSandboxPolicy,
-        network_policy: NetworkSandboxPolicy,
+        permission_profile: &PermissionProfile,
         pref: SandboxablePreference,
         has_managed_network_requirements: bool,
     ) -> bool {
         match pref {
             SandboxablePreference::Forbid => false,
             SandboxablePreference::Require => true,
-            SandboxablePreference::Auto => should_require_platform_sandbox(
-                file_system_policy,
-                network_policy,
-                has_managed_network_requirements,
-            ),
+            SandboxablePreference::Auto => {
+                let (file_system_policy, network_policy) =
+                    permission_profile.to_runtime_permissions();
+                should_require_platform_sandbox(
+                    &file_system_policy,
+                    network_policy,
+                    has_managed_network_requirements,
+                )
+            }
         }
     }
 
@@ -348,8 +337,6 @@ impl SandboxManager {
             base_effective_permission_profile.clone(),
             managed_mitm_ca_trust_bundle_path.as_ref(),
         );
-        let (base_file_system_policy, base_network_policy) =
-            base_effective_permission_profile.to_runtime_permissions();
         let mut argv = Vec::with_capacity(1 + command.args.len());
         argv.push(command.program);
         argv.extend(command.args.into_iter().map(OsString::from));
@@ -363,10 +350,13 @@ impl SandboxManager {
                 use crate::seatbelt::create_seatbelt_command_args;
 
                 let pending = pending_sandboxed_request?;
+                let (file_system_sandbox_policy, network_sandbox_policy) = pending
+                    .effective_permission_profile
+                    .to_runtime_permissions();
                 let mut args = create_seatbelt_command_args(CreateSeatbeltCommandArgsParams {
                     command: os_argv_to_strings(argv),
-                    file_system_sandbox_policy: &pending.effective_file_system_policy,
-                    network_sandbox_policy: pending.effective_network_policy,
+                    file_system_sandbox_policy: &file_system_sandbox_policy,
+                    network_sandbox_policy,
                     sandbox_policy_cwd: pending.native_sandbox_policy_cwd.as_path(),
                     enforce_managed_network,
                     managed_network,
@@ -389,7 +379,9 @@ impl SandboxManager {
                 let allow_proxy_network = allow_network_for_proxy(enforce_managed_network);
                 #[cfg(target_os = "linux")]
                 ensure_linux_bubblewrap_is_supported(
-                    &pending.effective_file_system_policy,
+                    &pending
+                        .effective_permission_profile
+                        .file_system_sandbox_policy(),
                     use_legacy_landlock,
                     allow_proxy_network,
                     is_wsl1(),
@@ -427,22 +419,11 @@ impl SandboxManager {
 
         // Unsandboxed exec-server requests may have foreign cwd values that cannot be prepared
         // locally, but their effective permissions must still be preserved. In that case, carry
-        // forward the base profile and its derived runtime policies.
-        let (permission_profile, file_system_sandbox_policy, network_sandbox_policy) =
-            pending_sandboxed_request.map_or(
-                (
-                    base_effective_permission_profile,
-                    base_file_system_policy,
-                    base_network_policy,
-                ),
-                |pending| {
-                    (
-                        pending.effective_permission_profile,
-                        pending.effective_file_system_policy,
-                        pending.effective_network_policy,
-                    )
-                },
-            );
+        // forward the base profile.
+        let permission_profile = pending_sandboxed_request
+            .map_or(base_effective_permission_profile, |pending| {
+                pending.effective_permission_profile
+            });
 
         Ok(SandboxExecRequest {
             command: argv,
@@ -455,8 +436,6 @@ impl SandboxManager {
             windows_sandbox_level,
             windows_sandbox_private_desktop,
             permission_profile,
-            file_system_sandbox_policy,
-            network_sandbox_policy,
             arg0: arg0_override,
         })
     }
diff --git a/codex-rs/sandboxing/src/manager_tests.rs b/codex-rs/sandboxing/src/manager_tests.rs
index 27afea1083..1fe2d51451 100644
--- a/codex-rs/sandboxing/src/manager_tests.rs
+++ b/codex-rs/sandboxing/src/manager_tests.rs
@@ -29,8 +29,7 @@ use tempfile::TempDir;
 fn danger_full_access_defaults_to_no_sandbox_without_network_requirements() {
     let manager = SandboxManager::new();
     let sandbox = manager.select_initial(
-        &FileSystemSandboxPolicy::unrestricted(),
-        NetworkSandboxPolicy::Enabled,
+        &PermissionProfile::Disabled,
         SandboxablePreference::Auto,
         WindowsSandboxLevel::Disabled,
         /*has_managed_network_requirements*/ false,
@@ -44,8 +43,7 @@ fn danger_full_access_uses_platform_sandbox_with_network_requirements() {
     let expected =
         get_platform_sandbox(/*windows_sandbox_enabled*/ false).unwrap_or(SandboxType::None);
     let sandbox = manager.select_initial(
-        &FileSystemSandboxPolicy::unrestricted(),
-        NetworkSandboxPolicy::Enabled,
+        &PermissionProfile::Disabled,
         SandboxablePreference::Auto,
         WindowsSandboxLevel::Disabled,
         /*has_managed_network_requirements*/ true,
@@ -58,7 +56,7 @@ fn restricted_file_system_uses_platform_sandbox_without_managed_network() {
     let manager = SandboxManager::new();
     let expected =
         get_platform_sandbox(/*windows_sandbox_enabled*/ false).unwrap_or(SandboxType::None);
-    let sandbox = manager.select_initial(
+    let permissions = PermissionProfile::from_runtime_permissions(
         &FileSystemSandboxPolicy::restricted(vec![FileSystemSandboxEntry {
             path: FileSystemPath::Special {
                 value: FileSystemSpecialPath::Root,
@@ -67,6 +65,9 @@ fn restricted_file_system_uses_platform_sandbox_without_managed_network() {
             missing_path_behavior: None,
         }]),
         NetworkSandboxPolicy::Enabled,
+    );
+    let sandbox = manager.select_initial(
+        &permissions,
         SandboxablePreference::Auto,
         WindowsSandboxLevel::Disabled,
         /*has_managed_network_requirements*/ false,
@@ -112,11 +113,11 @@ fn unsandboxed_transform_preserves_foreign_cwd_and_unrestricted_file_system_poli
     assert_eq!(exec_request.cwd, cwd_uri);
     assert_eq!(exec_request.sandbox_policy_cwd, cwd_uri);
     assert_eq!(
-        exec_request.file_system_sandbox_policy,
+        exec_request.permission_profile.file_system_sandbox_policy(),
         FileSystemSandboxPolicy::unrestricted()
     );
     assert_eq!(
-        exec_request.network_sandbox_policy,
+        exec_request.permission_profile.network_sandbox_policy(),
         NetworkSandboxPolicy::Restricted
     );
 }
@@ -172,7 +173,7 @@ fn transform_additional_permissions_enable_network_for_external_sandbox() {
         }
     );
     assert_eq!(
-        exec_request.network_sandbox_policy,
+        exec_request.permission_profile.network_sandbox_policy(),
         NetworkSandboxPolicy::Enabled
     );
 }
@@ -239,7 +240,7 @@ fn transform_additional_permissions_preserves_denied_entries() {
         .expect("transform");
 
     assert_eq!(
-        exec_request.file_system_sandbox_policy,
+        exec_request.permission_profile.file_system_sandbox_policy(),
         FileSystemSandboxPolicy::restricted(vec![
             FileSystemSandboxEntry {
                 path: FileSystemPath::Special {
@@ -261,7 +262,7 @@ fn transform_additional_permissions_preserves_denied_entries() {
         ])
     );
     assert_eq!(
-        exec_request.network_sandbox_policy,
+        exec_request.permission_profile.network_sandbox_policy(),
         NetworkSandboxPolicy::Restricted
     );
 }