diff --git a/cmd/olliesrv/server.go b/cmd/olliesrv/server.go
index 56ca5e0..cf5f9ea 100644
--- a/cmd/olliesrv/server.go
+++ b/cmd/olliesrv/server.go
@@ -585,9 +585,9 @@ func (s *Server) pathType(path string) string {
 			if sess.Core == nil {
 				return ""
 			}
-			// Validate agent Name
-			agentName := sess.Core.Agent().Name()
-			if agentName == "" || parts[2] != agentName {
+			// Validate target agent by name or ID.
+			ag := sess.Core.FindAgent(parts[2])
+			if ag == nil {
 				return ""
 			}
 			// /session/{id}/agent/{aid} — directory
@@ -600,7 +600,7 @@ func (s *Server) pathType(path string) string {
 			}
 			// /session/{id}/agent/{aid}/proc/{pid} — verify exists
 			if len(parts) == 5 && parts[3] == "proc" {
-				for _, p := range sess.Core.Agent().ListDetached() {
+				for _, p := range ag.ListDetached() {
 					if fmt.Sprintf("%d", p.PID) == parts[4] {
 						return "file"
 					}