diff --git a/cmd/olliesrv/internal/fs/spec.go b/cmd/olliesrv/internal/fs/spec.go
index 3292176..19b728c 100644
--- a/cmd/olliesrv/internal/fs/spec.go
+++ b/cmd/olliesrv/internal/fs/spec.go
@@ -946,6 +946,16 @@ func buildAgentChildren(a *agent.Agent, s *session.Session) []virtfs.FsNodeDecl
 						a.Interrupt(agent.ErrInterrupted)
 						return []byte("ok\n"), nil
 					},
+					"detach": func(_ []string) ([]byte, error) {
+						ts := a.ToolServer()
+						if ts == nil {
+							return nil, fmt.Errorf("no tool server")
+						}
+						if !ts.Detach() {
+							return nil, fmt.Errorf("no foreground process to detach")
+						}
+						return []byte("ok\n"), nil
+					},
 					"compact": func(_ []string) ([]byte, error) {
 						if err := a.Compact(s.Ctx); err != nil {
 							return nil, err
@@ -1185,7 +1195,7 @@ func buildAgentChildren(a *agent.Agent, s *session.Session) []virtfs.FsNodeDecl
 					},
 					"stats": stats,
 					"help": func(_ []string) ([]byte, error) {
-						return []byte("stop compact clear inject agent model models tools tool_load tool_unload cwd proc name backend systemprompt peeradd peerdel peers stats help\n"), nil
+						return []byte("stop detach compact clear inject agent model models tools tool_load tool_unload cwd proc name backend systemprompt peeradd peerdel peers stats help\n"), nil
 					},
 				}, data)
 			}),