Agent Planning Tree (Tree-of-Thought)

digraph plan {
  rankdir=TB;
  graph [bgcolor=transparent];
  node [shape=box, style="rounded,filled", fontname=Inter, fontsize=10];

  G [label="Goal", fillcolor="#fce7f3"];
  A [label="Plan A\nscore 0.72", fillcolor="#dcfce7"];
  B [label="Plan B\nscore 0.45", fillcolor="#fef3c7"];
  C [label="Plan C\nscore 0.83 ★", fillcolor="#dcfce7"];

  A1 [label="A.1 step", fillcolor="#dbeafe"];
  A2 [label="A.2 dead-end", fillcolor="#fee2e2"];
  C1 [label="C.1 sub-plan\nscore 0.85"];
  C2 [label="C.2 sub-plan\nscore 0.70"];
  Final [label="Execute C → C.1 → ...", fillcolor="#dcfce7"];

  G -> A; G -> B; G -> C;
  A -> A1; A -> A2;
  C -> C1; C -> C2;
  C1 -> Final;
}