DailyMed MCP Server

Instructions

Implementation Reference

• src/mapping-service.ts:141-154 (handler)

  The searchRxNormMappingsByName method in MappingService performs the core logic for searching RxNorm mappings by drug name.

  searchRxNormMappingsByName(drugName: string): RxNormMapping[] {
    const searchTerm = drugName.toLowerCase();
    const results: RxNormMapping[] = [];
    
    for (const mappings of this.rxNormMappings.values()) {
      for (const mapping of mappings) {
        if (mapping.rxstring.toLowerCase().includes(searchTerm)) {
          results.push(mapping);
        }
      }
    }
    
    return results;
  }

• src/tools.ts:502-514 (schema)

  The tool definition and input schema for search_by_rxnorm_mapping in src/tools.ts.

  {
    name: "search_by_rxnorm_mapping",
    description: "Search for RxNorm mappings by drug name",
    inputSchema: {
      type: "object",
      properties: {
        drugName: {
          type: "string",
          description: "Drug name to search for in RxNorm mappings",
        },
      },
      required: ["drugName"],
    },

• src/clients/dailymed-client.ts:149-151 (registration)

  The delegate method searchByRxNormMapping in DailyMedClient, which bridges the tool call to the MappingService.

  async searchByRxNormMapping(drugName: string) {
    return this.mappingService.searchRxNormMappingsByName(drugName);
  }