MCP DuckDB Knowledge Graph Memory Server

export const toolsSchema = [ { name: "create_entities", description: "Create multiple new entities in the knowledge graph", inputSchema: { type: "object", properties: { entities: { type: "array", items: { type: "object", properties: { name: { type: "string", description: "The name of the entity", }, entityType: { type: "string", description: "The type of the entity", }, observations: { type: "array", items: { type: "string" }, description: "An array of observation contents associated with the entity", }, }, required: ["name", "entityType", "observations"], }, }, }, required: ["entities"], }, }, { name: "create_relations", description: "Create multiple new relations between entities in the knowledge graph. Relations should be in active voice", inputSchema: { type: "object", properties: { relations: { type: "array", items: { type: "object", properties: { from: { type: "string", description: "The name of the entity where the relation starts", }, to: { type: "string", description: "The name of the entity where the relation ends", }, relationType: { type: "string", description: "The type of the relation", }, }, required: ["from", "to", "relationType"], }, }, }, required: ["relations"], }, }, { name: "add_observations", description: "Add new observations to existing entities in the knowledge graph", inputSchema: { type: "object", properties: { observations: { type: "array", items: { type: "object", properties: { entityName: { type: "string", description: "The name of the entity to add the observations to", }, contents: { type: "array", items: { type: "string" }, description: "An array of observation contents to add", }, }, required: ["entityName", "contents"], }, }, }, required: ["observations"], }, }, { name: "delete_entities", description: "Delete multiple entities and their associated relations from the knowledge graph", inputSchema: { type: "object", properties: { entityNames: { type: "array", items: { type: "string" }, description: "An array of entity names to delete", }, }, required: ["entityNames"], }, }, { name: "delete_observations", description: "Delete specific observations from entities in the knowledge graph", inputSchema: { type: "object", properties: { deletions: { type: "array", items: { type: "object", properties: { entityName: { type: "string", description: "The name of the entity containing the observations", }, observations: { type: "array", items: { type: "string" }, description: "An array of observations to delete", }, }, required: ["entityName", "observations"], }, }, }, required: ["deletions"], }, }, { name: "delete_relations", description: "Delete multiple relations from the knowledge graph", inputSchema: { type: "object", properties: { relations: { type: "array", items: { type: "object", properties: { from: { type: "string", description: "The name of the entity where the relation starts", }, to: { type: "string", description: "The name of the entity where the relation ends", }, relationType: { type: "string", description: "The type of the relation", }, }, required: ["from", "to", "relationType"], }, description: "An array of relations to delete", }, }, required: ["relations"], }, }, { name: "search_nodes", description: "Search for nodes in the knowledge graph based on a query", inputSchema: { type: "object", properties: { query: { type: "string", description: "The search query to match against entity names, types, and observation content", }, }, required: ["query"], }, }, { 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"], }, }, ];