diff --git a/modules/mesh-delivery-assigner/cmd/mesh-delivery-assigner/seat_tools.go b/modules/mesh-delivery-assigner/cmd/mesh-delivery-assigner/seat_tools.go
index 3c7e708..b599301 100644
--- a/modules/mesh-delivery-assigner/cmd/mesh-delivery-assigner/seat_tools.go
+++ b/modules/mesh-delivery-assigner/cmd/mesh-delivery-assigner/seat_tools.go
@@ -507,7 +507,8 @@ func (s *seatTools) doProposals(args map[string]any) (any, error) {
 	return map[string]any{"proposals": out}, nil
 }
 
-// tools are the seat's verbs as the runtime serves them, under the seat's verb names, with the seat's own schemas.
+// tools are the seat's verbs as the runtime serves them, each named <seat>.<verb> (the tool runner serves a seat's verb
+// only from a tool of that name), with the seat's own schemas.
 func (s *seatTools) tools() []stdio.Tool {
 	seat, _ := catalogue.SeatNamed(catalogue.PlacementSeat)
 	input := map[string]map[string]any{}
@@ -526,7 +527,7 @@ func (s *seatTools) tools() []stdio.Tool {
 	}
 	var out []stdio.Tool
 	for _, v := range seat.Serves {
-		out = append(out, stdio.Tool{Name: v.Name, Description: description[v.Name], Input: input[v.Name], Run: run[v.Name]})
+		out = append(out, stdio.Tool{Name: catalogue.PlacementSeat + "." + v.Name, Description: description[v.Name], Input: input[v.Name], Run: run[v.Name]})
 	}
 	return out
 }
diff --git a/modules/mesh-delivery-assigner/cmd/mesh-delivery-assigner/seat_tools_test.go b/modules/mesh-delivery-assigner/cmd/mesh-delivery-assigner/seat_tools_test.go
index 1594f62..fb22c73 100644
--- a/modules/mesh-delivery-assigner/cmd/mesh-delivery-assigner/seat_tools_test.go
+++ b/modules/mesh-delivery-assigner/cmd/mesh-delivery-assigner/seat_tools_test.go
@@ -142,7 +142,7 @@ func TestTheSeatsVerbs(t *testing.T) {
 	if hb := got.(proposed).Proposal; err != nil || !hb.HandBack || hb.Base["anchor"] != uint64(len(raw)) || len(st[delivery.PlacementState].values) != 1 {
 		t.Errorf("hand-back = %+v, %v", got, err)
 	}
-	if tools := s.tools(); len(tools) != 7 || tools[2].Name != catalogue.PlacementVerbPropose || tools[2].Run == nil || tools[2].Input == nil {
+	if tools := s.tools(); len(tools) != 7 || tools[2].Name != "mesh-placement.propose" || tools[2].Run == nil || tools[2].Input == nil {
 		t.Errorf("the seat's verbs as served: %+v", tools)
 	}
 }