get_link_graph
Generate a visual link graph showing connections between notes in your Obsidian vault to analyze relationships and discover content connections.
Instructions
Get the link graph for the vault
Input Schema
TableJSON Schema
| Name | Required | Description | Default |
|---|---|---|---|
| max_notes | No |
Output Schema
TableJSON Schema
| Name | Required | Description | Default |
|---|---|---|---|
| result | Yes |
Implementation Reference
- src/obsidian_mcp/vault.py:796-844 (handler)Core implementation of get_link_graph: iterates over notes, extracts wikilinks, resolves them to paths, builds nodes and directed edges for graph visualization.
async def get_link_graph(self, max_notes: int = 1000) -> dict[str, Any]: """ Build a link graph for the vault. Returns: Dict with 'nodes' and 'edges' for visualization """ nodes = [] edges = [] seen_paths = set() for note_meta in self.list_notes(limit=max_notes): # Add node if note_meta.path not in seen_paths: nodes.append( { "id": note_meta.path, "name": note_meta.name, "size": note_meta.size, "tags": note_meta.tags if note_meta.tags else [], } ) seen_paths.add(note_meta.path) # Add edges (links) try: note = await self.read_note(note_meta.path) links = self._extract_links(note.content) for link in links: resolved = self._resolve_link(link, note_meta.path) if resolved and resolved in seen_paths: edges.append( { "source": note_meta.path, "target": resolved, } ) except Exception as e: logger.debug(f"Error building graph for {note_meta.path}: {e}") continue return { "nodes": nodes, "edges": edges, "total_nodes": len(nodes), "total_edges": len(edges), } - src/obsidian_mcp/server.py:913-953 (registration)MCP tool registration for get_link_graph: wrapper that calls vault.get_link_graph, formats summary and full JSON output.
@mcp.tool(name="get_link_graph", description="Get the link graph for the vault") async def get_link_graph(max_notes: int = 500) -> str: """ Build a link graph of the vault. Args: max_notes: Maximum number of notes to include (default: 500) Returns: JSON representation of the graph with nodes and edges """ if max_notes <= 0 or max_notes > 10000: return "Error: max_notes must be between 1 and 10000" context = _get_context() try: graph = await context.vault.get_link_graph(max_notes) output = "# Link Graph\n\n" output += f"**Total Nodes:** {graph['total_nodes']}\n" output += f"**Total Edges:** {graph['total_edges']}\n\n" output += "## Sample Nodes (first 10):\n" for node in graph["nodes"][:10]: output += f"- {node['name']} ({node['id']})\n" output += "\n## Sample Edges (first 10):\n" for edge in graph["edges"][:10]: output += f"- {edge['source']} → {edge['target']}\n" output += "\n\n**Full Graph Data (JSON):**\n```json\n" output += json.dumps(graph, indent=2) output += "\n```" return output except Exception as e: logger.exception("Error building link graph") return f"Error building link graph: {e}"