MCP RAG

Instructions

Implementation Reference

• src/index.ts:458-467 (handler)

  MCP tool handler for 'get_stats': fetches statistics from RAGService and formats as JSON response.

  private async handleGetStats() {
    const stats = await this.ragService.getStats();
    return {
      content: [
        {
          type: 'text',
          text: JSON.stringify(stats, null, 2),
        },
      ],
    };

• src/index.ts:188-195 (registration)

  Tool registration in ListToolsRequestHandler, including name, description, and empty input schema.

  {
    name: 'get_stats',
    description: 'Get statistics about the RAG system',
    inputSchema: {
      type: 'object',
      properties: {},
    },
  },

• src/index.ts:191-194 (schema)

  Input schema for 'get_stats' tool (no required parameters).

  inputSchema: {
    type: 'object',
    properties: {},
  },

• src/services/ragService.ts:222-233 (helper)

  RAGService.getStats() method that delegates to vectorDatabase for collection statistics.

  async getStats(): Promise<{
    documents: number;
    memory: number;
    total: number;
  }> {
    try {
      return await this.vectorDatabase.getCollectionStats();
    } catch (error) {
      logger.error(`Error getting stats: ${error}`);
      return { documents: 0, memory: 0, total: 0 };
    }
  }