Dr. QuantMaster MCP Server

Instructions

Implementation Reference

• src/tools/index.ts:1416-1427 (handler)

  The handler function implementing the parallel_trends_check tool. It returns guidance on parallel trends checks for DID, including visual, statistical, and placebo approaches, along with R and Stata code examples.

  function handleParallelTrendsCheck(args: Record<string, unknown>) {
    return {
      pre_periods: args.pre_periods,
      approaches: {
        visual: "사전 기간 처치/통제 그룹 추세 비교 그래프",
        statistical: "사전 기간 시간×처치 상호작용항 유의성 검정",
        placebo: "가짜 처치 시점에서 효과 없음 확인"
      },
      r_code: "feols(y ~ i(time, treat, ref = -1) | id + time, data)",
      stata_code: "reghdfe y i.time#1.treat, absorb(id time) cluster(id)"
    };
  }

• src/tools/index.ts:281-291 (registration)

  Registration of the parallel_trends_check tool in the tools array, including its name, description, and input schema definition.

  {
    name: "parallel_trends_check",
    description: "DID 평행추세 검정 가이드",
    inputSchema: {
      type: "object",
      properties: {
        pre_periods: { type: "number", description: "사전 기간 수" },
        approach: { type: "string", enum: ["visual", "statistical", "placebo"], description: "검정 방법" },
      },
      required: ["pre_periods"],
    },

• src/tools/index.ts:284-290 (schema)

  Input schema for the parallel_trends_check tool, defining parameters pre_periods (required, number) and approach (string enum).

  inputSchema: {
    type: "object",
    properties: {
      pre_periods: { type: "number", description: "사전 기간 수" },
      approach: { type: "string", enum: ["visual", "statistical", "placebo"], description: "검정 방법" },
    },
    required: ["pre_periods"],

• src/tools/index.ts:820-821 (registration)

  Switch case in handleToolCall that routes calls to parallel_trends_check to its handler function.

  case "parallel_trends_check":
    return handleParallelTrendsCheck(args);