Dr. QuantMaster MCP Server

Instructions

Implementation Reference

• src/tools/index.ts:1211-1253 (handler)

  The handler function that executes the calc_effect_size tool logic, computing various effect sizes (Cohen's d, eta², f², OR) based on input type and values, with interpretations.

  function handleCalcEffectSize(args: Record<string, unknown>) {
    const type = args.type as string;
    const values = args.values as Record<string, number>;
  
    let result: any = { type };
  
    switch (type) {
      case "cohens_d":
        if (values.mean1 && values.mean2 && values.sd_pooled) {
          result.effect_size = ((values.mean1 - values.mean2) / values.sd_pooled).toFixed(3);
        } else if (values.t && values.n1 && values.n2) {
          result.effect_size = (values.t * Math.sqrt((values.n1 + values.n2) / (values.n1 * values.n2))).toFixed(3);
        }
        result.interpretation = {
          small: "0.2", medium: "0.5", large: "0.8"
        };
        break;
      case "eta_squared":
        if (values.ss_effect && values.ss_total) {
          result.effect_size = (values.ss_effect / values.ss_total).toFixed(3);
        }
        result.interpretation = {
          small: "0.01", medium: "0.06", large: "0.14"
        };
        break;
      case "f_squared":
        if (values.r_squared) {
          result.effect_size = (values.r_squared / (1 - values.r_squared)).toFixed(3);
        }
        result.interpretation = {
          small: "0.02", medium: "0.15", large: "0.35"
        };
        break;
      case "odds_ratio":
        if (values.or) {
          result.effect_size = values.or;
          result.cohens_d_approx = (Math.log(values.or) * Math.sqrt(3) / Math.PI).toFixed(3);
        }
        break;
    }
  
    return result;
  }

• src/tools/index.ts:144-155 (schema)

  Input schema definition for the calc_effect_size tool, specifying the type enum and values object.

  inputSchema: {
    type: "object",
    properties: {
      type: {
        type: "string",
        enum: ["cohens_d", "eta_squared", "f_squared", "odds_ratio", "correlation"],
        description: "효과크기 유형"
      },
      values: { type: "object", description: "계산에 필요한 값들" },
    },
    required: ["type", "values"],
  },

• src/tools/index.ts:142-156 (registration)

  Registration of the calc_effect_size tool in the exported tools array.

    name: "calc_effect_size",
    description: "효과크기 계산 및 해석 (Cohen's d, η², f², OR, RR)",
    inputSchema: {
      type: "object",
      properties: {
        type: {
          type: "string",
          enum: ["cohens_d", "eta_squared", "f_squared", "odds_ratio", "correlation"],
          description: "효과크기 유형"
        },
        values: { type: "object", description: "계산에 필요한 값들" },
      },
      required: ["type", "values"],
    },
  },

• src/tools/index.ts:798-799 (registration)

  Dispatch case in handleToolCall function that routes calls to the effect size handler.

  case "calc_effect_size":
    return handleCalcEffectSize(args);