diff --git a/common/environment/rootcap.go b/common/environment/rootcap.go
new file mode 100644
index 000000000..6fe376d3a
--- /dev/null
+++ b/common/environment/rootcap.go
@@ -0,0 +1,7 @@
+package environment
+
+type RootEnvironment interface {
+	AppEnvironment(tag string) AppEnvironment
+	ProxyEnvironment(tag string) ProxyEnvironment
+	doNotImpl()
+}
diff --git a/common/environment/rootcap_impl.go b/common/environment/rootcap_impl.go
new file mode 100644
index 000000000..5ad54ee9d
--- /dev/null
+++ b/common/environment/rootcap_impl.go
@@ -0,0 +1,199 @@
+package environment
+
+import (
+	"context"
+	"github.com/v2fly/v2ray-core/v5/common/platform/filesystem/fsifce"
+	"github.com/v2fly/v2ray-core/v5/features/extension/storage"
+	"github.com/v2fly/v2ray-core/v5/transport/internet"
+	"github.com/v2fly/v2ray-core/v5/transport/internet/tagged"
+)
+
+func NewRootEnvImpl(ctx context.Context, transientStorage storage.ScopedTransientStorage) RootEnvironment {
+	return &rootEnvImpl{transientStorage: transientStorage, ctx: ctx}
+}
+
+type rootEnvImpl struct {
+	transientStorage storage.ScopedTransientStorage
+
+	ctx context.Context
+}
+
+func (r *rootEnvImpl) doNotImpl() {
+	panic("placeholder doNotImpl")
+}
+
+func (r *rootEnvImpl) AppEnvironment(tag string) AppEnvironment {
+	transientStorage, err := r.transientStorage.NarrowScope(r.ctx, tag)
+	if err != nil {
+		return nil
+	}
+	return &appEnvImpl{
+		transientStorage: transientStorage,
+		ctx:              r.ctx,
+	}
+}
+
+func (r *rootEnvImpl) ProxyEnvironment(tag string) ProxyEnvironment {
+	transientStorage, err := r.transientStorage.NarrowScope(r.ctx, tag)
+	if err != nil {
+		return nil
+	}
+	return &proxyEnvImpl{
+		transientStorage: transientStorage,
+		ctx:              r.ctx,
+	}
+}
+
+type appEnvImpl struct {
+	transientStorage storage.ScopedTransientStorage
+
+	ctx context.Context
+}
+
+func (a *appEnvImpl) RequireFeatures() interface{} {
+	panic("implement me")
+}
+
+func (a *appEnvImpl) RecordLog() interface{} {
+	panic("implement me")
+}
+
+func (a *appEnvImpl) Dialer() internet.SystemDialer {
+	panic("implement me")
+}
+
+func (a *appEnvImpl) Listener() internet.SystemListener {
+	panic("implement me")
+}
+
+func (a *appEnvImpl) OutboundDialer() tagged.DialFunc {
+	panic("implement me")
+}
+
+func (a *appEnvImpl) OpenFileForReadSeek() fsifce.FileSeekerFunc {
+	panic("implement me")
+}
+
+func (a *appEnvImpl) OpenFileForRead() fsifce.FileReaderFunc {
+	panic("implement me")
+}
+
+func (a *appEnvImpl) OpenFileForWrite() fsifce.FileWriterFunc {
+	panic("implement me")
+}
+
+func (a *appEnvImpl) PersistentStorage() storage.ScopedPersistentStorage {
+	panic("implement me")
+}
+
+func (a *appEnvImpl) TransientStorage() storage.ScopedTransientStorage {
+	return a.transientStorage
+}
+
+func (a *appEnvImpl) NarrowScope(key string) (AppEnvironment, error) {
+	transientStorage, err := a.transientStorage.NarrowScope(a.ctx, key)
+	if err != nil {
+		return nil, err
+	}
+	return &appEnvImpl{
+		transientStorage: transientStorage,
+		ctx:              a.ctx,
+	}, nil
+}
+
+func (a *appEnvImpl) doNotImpl() {
+	panic("placeholder doNotImpl")
+}
+
+type proxyEnvImpl struct {
+	transientStorage storage.ScopedTransientStorage
+
+	ctx context.Context
+}
+
+func (p *proxyEnvImpl) RequireFeatures() interface{} {
+	panic("implement me")
+}
+
+func (p *proxyEnvImpl) RecordLog() interface{} {
+	panic("implement me")
+}
+
+func (p *proxyEnvImpl) OutboundDialer() tagged.DialFunc {
+	panic("implement me")
+}
+
+func (p *proxyEnvImpl) TransientStorage() storage.ScopedTransientStorage {
+	return p.transientStorage
+}
+
+func (p *proxyEnvImpl) NarrowScope(key string) (ProxyEnvironment, error) {
+	transientStorage, err := p.transientStorage.NarrowScope(p.ctx, key)
+	if err != nil {
+		return nil, err
+	}
+	return &proxyEnvImpl{
+		transientStorage: transientStorage,
+		ctx:              p.ctx,
+	}, nil
+}
+
+func (p *proxyEnvImpl) NarrowScopeToTransport(key string) (TransportEnvironment, error) {
+	transientStorage, err := p.transientStorage.NarrowScope(p.ctx, key)
+	if err != nil {
+		return nil, err
+	}
+	return &transportEnvImpl{
+		ctx:              p.ctx,
+		transientStorage: transientStorage,
+	}, nil
+}
+
+func (p *proxyEnvImpl) doNotImpl() {
+	panic("placeholder doNotImpl")
+}
+
+type transportEnvImpl struct {
+	transientStorage storage.ScopedTransientStorage
+
+	ctx context.Context
+}
+
+func (t *transportEnvImpl) RequireFeatures() interface{} {
+	panic("implement me")
+}
+
+func (t *transportEnvImpl) RecordLog() interface{} {
+	panic("implement me")
+}
+
+func (t *transportEnvImpl) Dialer() internet.SystemDialer {
+	panic("implement me")
+}
+
+func (t *transportEnvImpl) Listener() internet.SystemListener {
+	panic("implement me")
+}
+
+func (t *transportEnvImpl) OutboundDialer() tagged.DialFunc {
+	panic("implement me")
+}
+
+func (t *transportEnvImpl) TransientStorage() storage.ScopedTransientStorage {
+	return t.transientStorage
+}
+
+func (t *transportEnvImpl) NarrowScope(key string) (TransportEnvironment, error) {
+	transientStorage, err := t.transientStorage.NarrowScope(t.ctx, key)
+	if err != nil {
+		return nil, err
+	}
+	return &transportEnvImpl{
+		ctx:              t.ctx,
+		transientStorage: transientStorage,
+	}, nil
+}
+
+func (t *transportEnvImpl) doNotImpl() {
+	panic("implement me")
+}