open_nodes
Retrieve specific entities from a knowledge graph by name to access stored information across conversations, enabling persistent memory for AI interactions.
Instructions
Open specific nodes in the knowledge graph by their names
Input Schema
TableJSON Schema
| Name | Required | Description | Default |
|---|---|---|---|
| names | Yes | An array of entity names to retrieve |
Implementation Reference
- index.ts:183-203 (handler)The core handler function in KnowledgeGraphManager that loads the graph, filters entities by the provided names, includes only relations between those entities, and returns the filtered subgraph.
async openNodes(names: string[]): Promise<KnowledgeGraph> { const graph = await this.loadGraph(); // Filter entities const filteredEntities = graph.entities.filter(e => names.includes(e.name)); // Create a Set of filtered entity names for quick lookup const filteredEntityNames = new Set(filteredEntities.map(e => e.name)); // Filter relations to only include those between filtered entities const filteredRelations = graph.relations.filter(r => filteredEntityNames.has(r.from) && filteredEntityNames.has(r.to) ); const filteredGraph: KnowledgeGraph = { entities: filteredEntities, relations: filteredRelations, }; return filteredGraph; } - index.ts:439-453 (schema)The tool schema definition including name, description, and input schema specifying an array of entity names.
{ name: "open_nodes", description: "Open specific nodes in the knowledge graph by their names", inputSchema: { type: "object", properties: { names: { type: "array", items: { type: "string" }, description: "An array of entity names to retrieve", }, }, required: ["names"], }, }, - index.ts:533-534 (registration)The switch case in the CallToolRequestSchema handler that dispatches the call to knowledgeGraphManager.openNodes.
case "open_nodes": return { content: [{ type: "text", text: JSON.stringify(await knowledgeGraphManager.openNodes(args.names as string[]), null, 2) }] };