エージェントから構造化された出力を取得する

import { query } from "@anthropic-ai/claude-agent-sdk";

// 返してほしいデータの形状を定義
const schema = {
  type: "object",
  properties: {
    company_name: { type: "string" },
    founded_year: { type: "number" },
    headquarters: { type: "string" }
  },
  required: ["company_name"]
};

for await (const message of query({
  prompt: "Research Anthropic and provide key company information",
  options: {
    outputFormat: {
      type: "json_schema",
      schema: schema
    }
  }
})) {
  // 結果メッセージには検証済みデータを含む structured_output が含まれます
  if (message.type === "result" && message.subtype === "success" && message.structured_output) {
    console.log(message.structured_output);
    // { company_name: "Anthropic", founded_year: 2021, headquarters: "San Francisco, CA" }
  }
}

import { z } from "zod";
import { query } from "@anthropic-ai/claude-agent-sdk";

// Zod でスキーマを定義
const FeaturePlan = z.object({
  feature_name: z.string(),
  summary: z.string(),
  steps: z.array(
    z.object({
      step_number: z.number(),
      description: z.string(),
      estimated_complexity: z.enum(["low", "medium", "high"])
    })
  ),
  risks: z.array(z.string())
});

type FeaturePlan = z.infer<typeof FeaturePlan>;

// JSON Schema に変換
const schema = z.toJSONSchema(FeaturePlan);

// クエリで使用
for await (const message of query({
  prompt:
    "Plan how to add dark mode support to a React app. Break it into implementation steps.",
  options: {
    outputFormat: {
      type: "json_schema",
      schema: schema
    }
  }
})) {
  if (message.type === "result" && message.subtype === "success" && message.structured_output) {
    // 検証して完全に型付けされた結果を取得
    const parsed = FeaturePlan.safeParse(message.structured_output);
    if (parsed.success) {
      const plan: FeaturePlan = parsed.data;
      console.log(`Feature: ${plan.feature_name}`);
      console.log(`Summary: ${plan.summary}`);
      plan.steps.forEach((step) => {
        console.log(`${step.step_number}. [${step.estimated_complexity}] ${step.description}`);
      });
    }
  }
}

import { query } from "@anthropic-ai/claude-agent-sdk";

// TODO 抽出用の構造を定義
const todoSchema = {
  type: "object",
  properties: {
    todos: {
      type: "array",
      items: {
        type: "object",
        properties: {
          text: { type: "string" },
          file: { type: "string" },
          line: { type: "number" },
          author: { type: "string" },
          date: { type: "string" }
        },
        required: ["text", "file", "line"]
      }
    },
    total_count: { type: "number" }
  },
  required: ["todos", "total_count"]
};

// エージェントは Grep を使用して TODO を見つけ、Bash を使用して git blame 情報を取得
for await (const message of query({
  prompt: "Find all TODO comments in this codebase and identify who added them",
  options: {
    outputFormat: {
      type: "json_schema",
      schema: todoSchema
    }
  }
})) {
  if (message.type === "result" && message.subtype === "success" && message.structured_output) {
    const data = message.structured_output as { total_count: number; todos: Array<{ file: string; line: number; text: string; author?: string; date?: string }> };
    console.log(`Found ${data.total_count} TODOs`);
    data.todos.forEach((todo) => {
      console.log(`${todo.file}:${todo.line} - ${todo.text}`);
      if (todo.author) {
        console.log(`  Added by ${todo.author} on ${todo.date}`);
      }
    });
  }
}

for await (const msg of query({
  prompt: "Extract contact info from the document",
  options: {
    outputFormat: {
      type: "json_schema",
      schema: contactSchema
    }
  }
})) {
  if (msg.type === "result") {
    if (msg.subtype === "success" && msg.structured_output) {
      // 検証済み出力を使用
      console.log(msg.structured_output);
    } else if (msg.subtype === "error_max_structured_output_retries") {
      // 失敗を処理 - より単純なプロンプトで再試行、非構造化にフォールバック、など
      console.error("Could not produce valid output");
    }
  }
}