diff --git a/p2p/discover/api.go b/p2p/discover/api.go
index 363765ca8f..47f26c3977 100644
--- a/p2p/discover/api.go
+++ b/p2p/discover/api.go
@@ -46,6 +46,22 @@ type ContentInfo struct {
 	UtpTransfer bool   `json:"utpTransfer"`
 }
 
+type TraceContentResult struct {
+	Content     string `json:"content"`
+	UtpTransfer bool   `json:"utpTransfer"`
+	Trace       Trace  `json:"trace"`
+}
+
+type Trace struct {
+	Origin       string                 `json:"origin"`       // local node id
+	TargetId     string                 `json:"targetId"`     // target content id
+	ReceivedFrom string                 `json:"receivedFrom"` // the node id of which content from
+	Responses    map[string]ContentInfo `json:"responses"`    // the node id and there response
+	Metadata     map[string]any         `json:"metadata"`     // node id and there metadata object
+	StartedAtMs  int                    `json:"startedAtMs"`  // timestamp of the beginning of this request in milliseconds
+	Cancelled    []string               `json:"cancelled"`    // the node ids which are send but cancelled
+}
+
 type Enrs struct {
 	Enrs []string `json:"enrs"`
 }
diff --git a/p2p/discover/portal_protocol.go b/p2p/discover/portal_protocol.go
index 67eb3248a0..3b84f1da68 100644
--- a/p2p/discover/portal_protocol.go
+++ b/p2p/discover/portal_protocol.go
@@ -1499,6 +1499,8 @@ func (p *PortalProtocol) contentLookupWorker(n *enode.Node, contentKey []byte, r
 	return wrapedNode, nil
 }
 
+// func (p *PortalProtocol) traceContentLookupWorker()
+
 func (p *PortalProtocol) ToContentId(contentKey []byte) []byte {
 	return p.toContentId(contentKey)
 }