mcp_sparql_list_graphs
List all named graphs in a specified repository using SPARQL queries to manage and explore ontology data efficiently on the Ontology MCP server.
Instructions
지정된 리포지토리의 모든 명명된 그래프를 나열합니다
Input Schema
TableJSON Schema
| Name | Required | Description | Default |
|---|---|---|---|
| endpoint | No | SPARQL 엔드포인트 URL | |
| repository | No | 그래프를 조회할 리포지토리 이름 |
Implementation Reference
- src/tools/index.ts:185-216 (handler)The main handler function for the 'mcp_sparql_list_graphs' tool. It creates a SparqlService instance if endpoint provided, calls listGraphs method, formats result as JSON and returns as ToolResponse.
async handler(args: ListGraphsArgs): Promise<ToolResponse> { try { if (args.endpoint) { const service = new SparqlService({ endpoint: args.endpoint, defaultRepository: args.repository || '' }); const graphs = await service.listGraphs(args.repository); return { content: [{ type: 'text', text: JSON.stringify(graphs, null, 2) }] }; } else { const graphs = await sparqlService.listGraphs(args.repository); return { content: [{ type: 'text', text: JSON.stringify(graphs, null, 2) }] }; } } catch (error) { return { content: [{ type: 'text', text: `그래프 목록 조회 오류: ${error instanceof Error ? error.message : String(error)}` }] }; } } - src/tools/index.ts:171-184 (schema)Input schema definition for the tool parameters: optional repository and endpoint.
inputSchema: { type: 'object', properties: { repository: { type: 'string', description: '그래프를 조회할 리포지토리 이름' }, endpoint: { type: 'string', description: 'SPARQL 엔드포인트 URL' } }, required: [] }, - SparqlService.listGraphs method that executes a SPARQL query to list distinct named graphs in the repository.
async listGraphs(repository?: string): Promise<any> { const repo = repository || this.config.defaultRepository; try { const response = await this.executeQuery(` SELECT DISTINCT ?graph WHERE { GRAPH ?graph { ?s ?p ?o } } ORDER BY ?graph `, repo); return response; } catch (error) { throw new Error(`그래프 목록 조회 오류: ${error}`); } } - src/index.ts:29-29 (registration)Registration in MCP server capabilities indicating the tool is available.
mcp_sparql_list_graphs: true, - src/types/index.ts:96-99 (schema)TypeScript interface defining the input arguments for the tool.
export interface ListGraphsArgs { repository?: string; endpoint?: string; }