Gemini API の Managed Agents を拡張：バックグラウンドタスク、リモート MCP など

1npm install @google/genai

1import { GoogleGenAI } from "@google/genai";
2
3const client = new GoogleGenAI({});
4
5// 1. バックグラウンドで長時間の分析を開始
6const interaction = await client.interactions.create({
7  agent: "antigravity-preview-05-2026",
8  input: "Clone https://github.com/googleapis/js-genai, find all TODO comments in the source code, and categorize them by module and priority in a markdown report.",
9  environment: "remote",
10  background: true,
11});
12
13console.log(`Background task started. Interaction ID: ${interaction.id}`);
14
15// 2. HTTP ソケットをブロックせずに非同期でポーリング
16let result = interaction;
17while (result.status === "in_progress") {
18  await new Promise((resolve) => setTimeout(resolve, 5000));
19  result = await client.interactions.get(interaction.id);
20}
21
22if (result.status === "completed") {
23  console.log("Task Completed:\n", result.output_text);
24} else {
25  console.error(`Task ended with status: ${result.status}`);
26}

1import { GoogleGenAI } from "@google/genai";
2
3const client = new GoogleGenAI({});
4
5const interaction = await client.interactions.create({
6  agent: "antigravity-preview-05-2026",
7  input: "Check our internal observability server for recent latency spikes in the auth service and correlate them with git commits.",
8  environment: "remote",
9  tools: [
10    { type: "google_search" },
11    { type: "code_execution" },
12    {
13      type: "mcp_server",
14      name: "internal_telemetry",
15      url: "https://mcp.internal.example.com/mcp",
16    },
17  ],
18});
19
20console.log(interaction.output_text);

1import { GoogleGenAI } from "@google/genai";
2
3const client = new GoogleGenAI({});
4
5// 1. カスタムドメイン関数を定義
6const getWeatherTool = {
7  type: "function",
8  name: "get_weather",
9  description: "Gets the current weather for a given location.",
10  parameters: {
11    type: "object",
12    properties: {
13      location: {
14        type: "string",
15        description: "The city and country, e.g. San Francisco, USA",
16      },
17    },
18    required: ["location"],
19  },
20};
21
22// 2. 組み込みのコード実行とカスタム関数の両方を使用してエージェントを呼び出す
23const interaction = await client.interactions.create({
24  agent: "antigravity-preview-05-2026",
25  input: "Check the weather in Tokyo, write a Python script to convert the temperature to Fahrenheit, and save the result to weather.txt.",
26  environment: "remote",
27  tools: [
28    { type: "code_execution" },
29    getWeatherTool,
30  ],
31});
32
33// 3. カスタム関数の実行をクリーンに処理
34if (interaction.status === "requires_action") {
35  // ファイルシステムとサンドボックスツールは自動的に実行され、対応する function_result ステップを生成します。
36  // クライアント側での実行が必要な保留中のドメイン呼び出しをフィルタリングします。
37  const executedCalls = new Set(
38    interaction.steps
39      .filter((s) => s.type === "function_result")
40      .map((s) => s.call_id)
41  );
42
43  const pendingCalls = interaction.steps.filter(
44    (s) => s.type === "function_call" && !executedCalls.has(s.id)
45  );
46
47  for (const call of pendingCalls) {
48    console.log(`Executing client tool: ${call.name} (ID: ${call.id})`);
49    // ローカルの API/データベースクエリを実行し、function_result をターン 2 で返します
50  }
51}

1import { GoogleGenAI } from "@google/genai";
2const client = new GoogleGenAI({});
3
4// 1. 最初のインタラクション: 初期トークンを使用
5const first = await client.interactions.create({
6  agent: "antigravity-preview-05-2026",
7  input: "List the files in gs://my-bucket/reports/ using the GCS JSON API.",
8  environment: {
9    type: "remote",
10    network: {
11      allowlist: [
12        {
13          domain: "storage.googleapis.com",
14          transform: {
15            Authorization: "Bearer INITIAL_TOKEN",
16          },
17        },
18      ],
19    },
20  },
21});
22
23// 2. 後で: 同じ環境でトークンを更新
24const result = await client.interactions.create({
25  agent: "antigravity-preview-05-2026",
26  input: "Now download the file reports/q1.csv from the same bucket.",
27  environment: {
28    type: "remote",
29    environment_id: first.environment_id,
30    network: {
31      allowlist: [
32        {
33          domain: "storage.googleapis.com",
34          transform: {
35            Authorization: "Bearer REFRESHED_TOKEN",
36          },
37        },
38      ],
39    },
40  },
41});
42console.log(result.output_text);