DailyMed MCP Server

Instructions

Implementation Reference

• src/clients/ndc-client.ts:18-25 (handler)

  The core handler function that performs the API request to fetch all NDCs.

  async getAllNDCs(page: number = 1, pageSize: number = 25): Promise<PaginatedNDCResponse> {
    validatePaginationParams(page, pageSize, 100);
  
    try {
      const response = await this.client.get("/ndcs.json", {
        params: {
          page,
          pagesize: Math.min(pageSize, 100), // API max is 100

• src/tools.ts:123-135 (registration)

  Registration of the 'get_all_ndcs' tool definition.

  {
    name: "get_all_ndcs",
    description: "Get all available NDC codes in the DailyMed database with pagination support",
    inputSchema: {
      type: "object",
      properties: {
        page: {
          type: "number",
          description: "Page number for pagination (1-based, default: 1)",
          minimum: 1,
        },
        pageSize: {
          type: "number",

• src/index.ts:150-158 (handler)

  Tool execution logic in the MCP server request handler.

  case "get_all_ndcs":
    const allNDCs = await this.client.getAllNDCs(
      args.page as number,
      args.pageSize as number,
    );
    return {
      content: [
        {
          type: "text",

• src/clients/dailymed-client.ts:191-193 (helper)

  Wrapper method in the DailyMed client delegating the call to the NDC client.

  async getAllNDCs(page?: number, pageSize?: number) {
    return this.ndcClient.getAllNDCs(page, pageSize);
  }