diff --git a/tools/plotly_relationship_graph.py b/tools/plotly_relationship_graph.py
new file mode 100644
index 0000000..93cee08
--- /dev/null
+++ b/tools/plotly_relationship_graph.py
@@ -0,0 +1,322 @@
+#!/usr/bin/env python3
+"""
+Draw an interactive relationship graph from TrulyMEM SQLite graph database using Plotly.
+
+Output:
+- Static image file (PNG by default)
+
+Examples:
+  python tools/plotly_relationship_graph.py
+    python tools/plotly_relationship_graph.py --db-path ./graph_memory.db --output relation_graph.png
+    python tools/plotly_relationship_graph.py --include-non-active
+    python tools/plotly_relationship_graph.py --hide-edge-labels
+"""
+
+from __future__ import annotations
+
+import argparse
+import math
+import sqlite3
+from dataclasses import dataclass
+from pathlib import Path
+from typing import Dict, List, Tuple
+
+
+@dataclass
+class Entity:
+    id: int
+    name: str
+    entity_type: str
+    mention_count: int
+
+
+@dataclass
+class Relation:
+    source: str
+    target: str
+    relation_type: str
+    confidence: float
+    status: str
+
+
+def resolve_default_db_path() -> Path:
+    project_db = Path.cwd() / "graph_memory.db"
+    if project_db.exists():
+        return project_db
+    return Path.home() / ".trulymem" / "graph_memory.db"
+
+
+def load_graph(db_path: Path, include_non_active: bool) -> Tuple[Dict[str, Entity], List[Relation]]:
+    if not db_path.exists():
+        raise FileNotFoundError(f"Database not found: {db_path}")
+
+    conn = sqlite3.connect(str(db_path))
+    conn.row_factory = sqlite3.Row
+    try:
+        cursor = conn.cursor()
+        cursor.execute(
+            """
+            SELECT id, name, COALESCE(type, 'unknown') AS entity_type, mention_count
+            FROM entities
+            ORDER BY mention_count DESC, name ASC
+            """
+        )
+        entities: Dict[str, Entity] = {
+            row["name"]: Entity(
+                id=row["id"],
+                name=row["name"],
+                entity_type=row["entity_type"],
+                mention_count=int(row["mention_count"] or 1),
+            )
+            for row in cursor.fetchall()
+        }
+
+        sql = """
+            SELECT e1.name AS source,
+                   e2.name AS target,
+                   r.relation_type,
+                   r.confidence,
+                   r.status
+            FROM relations r
+            JOIN entities e1 ON r.source_id = e1.id
+            JOIN entities e2 ON r.target_id = e2.id
+        """
+        if not include_non_active:
+            sql += " WHERE r.status = 'active'"
+
+        cursor.execute(sql)
+        relations = [
+            Relation(
+                source=row["source"],
+                target=row["target"],
+                relation_type=row["relation_type"],
+                confidence=float(row["confidence"] or 0.0),
+                status=row["status"],
+            )
+            for row in cursor.fetchall()
+        ]
+        return entities, relations
+    finally:
+        conn.close()
+
+
+def compute_degrees(entities: Dict[str, Entity], relations: List[Relation]) -> Tuple[Dict[str, int], Dict[str, int]]:
+    in_deg = {name: 0 for name in entities}
+    out_deg = {name: 0 for name in entities}
+    for rel in relations:
+        if rel.source in out_deg:
+            out_deg[rel.source] += 1
+        if rel.target in in_deg:
+            in_deg[rel.target] += 1
+    return in_deg, out_deg
+
+
+def compute_positions(entities: Dict[str, Entity], in_deg: Dict[str, int], out_deg: Dict[str, int]) -> Dict[str, Tuple[float, float]]:
+    names = sorted(
+        entities.keys(),
+        key=lambda name: (-(in_deg[name] + out_deg[name]), -entities[name].mention_count, name),
+    )
+    n = len(names)
+    if n == 0:
+        return {}
+
+    radius = max(1.0, n / 8.0)
+    positions: Dict[str, Tuple[float, float]] = {}
+    for i, name in enumerate(names):
+        angle = (2.0 * math.pi * i) / n
+        x = radius * math.cos(angle)
+        y = radius * math.sin(angle)
+        positions[name] = (x, y)
+    return positions
+
+
+def format_relation_label(rel: Relation) -> str:
+    return f"{rel.relation_type} ({rel.confidence:.2f}, {rel.status})"
+
+
+def build_figure(
+    entities: Dict[str, Entity],
+    relations: List[Relation],
+    show_edge_labels: bool,
+    title: str,
+):
+    try:
+        import plotly.graph_objects as go
+    except ImportError as exc:
+        raise RuntimeError("Plotly is not installed. Run: pip install plotly") from exc
+
+    in_deg, out_deg = compute_degrees(entities, relations)
+    positions = compute_positions(entities, in_deg, out_deg)
+
+    edge_x: List[float] = []
+    edge_y: List[float] = []
+    edge_label_x: List[float] = []
+    edge_label_y: List[float] = []
+    edge_label_text: List[str] = []
+
+    for rel in relations:
+        if rel.source not in positions or rel.target not in positions:
+            continue
+        x0, y0 = positions[rel.source]
+        x1, y1 = positions[rel.target]
+        edge_x.extend([x0, x1, None])
+        edge_y.extend([y0, y1, None])
+
+        if show_edge_labels:
+            edge_label_x.append((x0 + x1) / 2.0)
+            edge_label_y.append((y0 + y1) / 2.0)
+            edge_label_text.append(format_relation_label(rel))
+
+    edge_trace = go.Scatter(
+        x=edge_x,
+        y=edge_y,
+        line={"width": 0.8, "color": "#8899aa"},
+        hoverinfo="none",
+        mode="lines",
+        name="relations",
+    )
+
+    node_x: List[float] = []
+    node_y: List[float] = []
+    node_text: List[str] = []
+    node_size: List[float] = []
+    node_color: List[float] = []
+
+    node_names = sorted(entities.keys())
+
+    for name in node_names:
+        x, y = positions[name]
+        entity = entities[name]
+        total_degree = in_deg[name] + out_deg[name]
+
+        node_x.append(x)
+        node_y.append(y)
+        node_size.append(10 + min(entity.mention_count, 40) * 0.8)
+        node_color.append(float(total_degree))
+        node_text.append(
+            f"{name}<br>"
+            f"type: {entity.entity_type}<br>"
+            f"mentions: {entity.mention_count}<br>"
+            f"in: {in_deg[name]} | out: {out_deg[name]}"
+        )
+
+    node_trace = go.Scatter(
+        x=node_x,
+        y=node_y,
+        mode="markers+text",
+        text=node_names,
+        textposition="top center",
+        hoverinfo="text",
+        hovertext=node_text,
+        marker={
+            "showscale": True,
+            "colorscale": "YlGnBu",
+            "reversescale": False,
+            "color": node_color,
+            "size": node_size,
+            "colorbar": {"title": "Degree"},
+            "line": {"width": 1, "color": "#2f3b52"},
+            "opacity": 0.9,
+        },
+        name="entities",
+    )
+
+    traces = [edge_trace, node_trace]
+
+    if show_edge_labels and edge_label_text:
+        edge_label_trace = go.Scatter(
+            x=edge_label_x,
+            y=edge_label_y,
+            mode="text",
+            text=edge_label_text,
+            textfont={"size": 9, "color": "#2d3a4b"},
+            hoverinfo="none",
+            name="relation_labels",
+        )
+        traces.append(edge_label_trace)
+
+    fig = go.Figure(
+        data=traces,
+        layout=go.Layout(
+            title=title,
+            title_x=0.5,
+            showlegend=False,
+            hovermode="closest",
+            margin={"b": 20, "l": 10, "r": 10, "t": 50},
+            xaxis={"showgrid": False, "zeroline": False, "showticklabels": False},
+            yaxis={"showgrid": False, "zeroline": False, "showticklabels": False},
+            plot_bgcolor="#f8fafc",
+            paper_bgcolor="#ffffff",
+        ),
+    )
+
+    rendered_nodes = set(node_names)
+    expected_nodes = set(entities.keys())
+    missing_nodes = expected_nodes - rendered_nodes
+    if missing_nodes:
+        preview = ", ".join(sorted(missing_nodes)[:10])
+        raise RuntimeError(
+            f"Node completeness check failed, missing {len(missing_nodes)} nodes: {preview}"
+        )
+
+    return fig
+
+
+def parse_args() -> argparse.Namespace:
+    parser = argparse.ArgumentParser(description="Draw graph relations from SQLite with Plotly.")
+    parser.add_argument("--db-path", type=str, default=None, help="Path to graph_memory.db")
+    parser.add_argument("--output", type=str, default="relation_graph.png", help="Output image file path")
+    parser.add_argument("--title", type=str, default="TrulyMEM Relationship Graph", help="Chart title")
+    parser.add_argument("--include-non-active", action="store_true", help="Include archived/deleted relations")
+    parser.add_argument("--show-edge-labels", dest="show_edge_labels", action="store_true", help="Show relation text on edges")
+    parser.add_argument("--hide-edge-labels", dest="show_edge_labels", action="store_false", help="Hide relation text on edges")
+    parser.set_defaults(show_edge_labels=True)
+    parser.add_argument("--width", type=int, default=2200, help="Output image width in pixels")
+    parser.add_argument("--height", type=int, default=1400, help="Output image height in pixels")
+    parser.add_argument("--scale", type=float, default=1.0, help="Image scale factor")
+    return parser.parse_args()
+
+
+def main() -> None:
+    args = parse_args()
+    db_path = Path(args.db_path) if args.db_path else resolve_default_db_path()
+
+    try:
+        entities, relations = load_graph(db_path, include_non_active=args.include_non_active)
+    except FileNotFoundError as exc:
+        print(f"[ERROR] {exc}")
+        return
+
+    if not entities:
+        print("[INFO] No entities found in database.")
+        return
+
+    try:
+        fig = build_figure(
+            entities=entities,
+            relations=relations,
+            show_edge_labels=args.show_edge_labels,
+            title=args.title,
+        )
+    except RuntimeError as exc:
+        print(f"[ERROR] {exc}")
+        return
+
+    output_path = Path(args.output)
+    output_path.parent.mkdir(parents=True, exist_ok=True)
+
+    try:
+        fig.write_image(str(output_path), width=args.width, height=args.height, scale=args.scale)
+    except Exception as exc:
+        print(f"[ERROR] Failed to export image: {exc}")
+        print("[HINT] Install kaleido for static export: pip install kaleido")
+        return
+
+    print(f"Database: {db_path}")
+    print(f"Entities: {len(entities)}, Relations: {len(relations)}")
+    print(f"Nodes drawn: {len(entities)}/{len(entities)}")
+    print(f"Saved: {output_path}")
+
+
+if __name__ == "__main__":
+    main()