{"id":25166,"date":"2025-11-25T15:17:54","date_gmt":"2025-11-25T15:17:54","guid":{"rendered":"https:\/\/pokecon.jp\/job\/?p=25166"},"modified":"2025-11-25T15:17:54","modified_gmt":"2025-11-25T15:17:54","slug":"ai-sdk-%e3%81%a8-workflow-devkit-%e3%82%92%e7%9c%ba%e3%82%81%e3%80%81agent-%e6%8a%bd%e8%b1%a1%e3%81%ae%e8%a1%8c%e3%81%8f%e6%9c%ab%e3%81%ab%e6%80%9d%e3%81%84%e3%82%92%e9%a6%b3%e3%81%9b%e3%82%8b","status":"publish","type":"post","link":"https:\/\/pokecon.jp\/job\/25166\/","title":{"rendered":"AI SDK \u3068 Workflow DevKit \u3092\u773a\u3081\u3001Agent \u62bd\u8c61\u306e\u884c\u304f\u672b\u306b\u601d\u3044\u3092\u99b3\u305b\u308b"},"content":{"rendered":"\n<\/p>\n<div>\n<p data-line=\"0\" class=\"code-line\"><img decoding=\"async\" src=\"https:\/\/storage.googleapis.com\/zenn-user-upload\/aec06704c818-20251125.png\" alt=\"\" class=\"md-img\" loading=\"lazy\"\/><\/p>\n<p data-line=\"2\" class=\"code-line\"><a target=\"_blank\" href=\"https:\/\/layerx.notion.site\/6975c0901ea54ca9b609fafc3e8a35c3?v=268cdd370bae80cc8dfb000c55400a25\" target=\"_blank\" rel=\"nofollow noopener noreferrer\">LayerX AI \u30a8\u30fc\u30b8\u30a7\u30f3\u30c8\u30d6\u30ed\u30b0\u30ea\u30ec\u30fc<\/a> 52\u65e5\u76ee\u306e\u8a18\u4e8b\u3067\u3059\u3002<\/p>\n<p data-line=\"4\" class=\"code-line\">\u30d0\u30af\u30e9\u30af\u4e8b\u696d\u90e8 \u30b9\u30bf\u30c3\u30d5\u30a8\u30f3\u30b8\u30cb\u30a2\u306e <a target=\"_blank\" href=\"https:\/\/x.com\/izumin5210\" target=\"_blank\" rel=\"nofollow noopener noreferrer\">@izumin5210<\/a> \u3067\u3059\u3002<br \/>Platform Engineering \u90e8 Enabling \u30c1\u30fc\u30e0\u3067\u3044\u308d\u3044\u308d\u306a\u3053\u3068\u3092\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<p data-line=\"7\" class=\"code-line\"><a target=\"_blank\" href=\"https:\/\/ai-sdk.dev\/docs\/announcing-ai-sdk-6-beta\" target=\"_blank\" rel=\"nofollow noopener noreferrer\">AI SDK 6 Beta<\/a> \u3067 <code>ToolLoopAgent<\/code> class \u3068 <code>Agent<\/code> interface, <a target=\"_blank\" href=\"https:\/\/vercel.com\/blog\/introducing-workflow\" target=\"_blank\" rel=\"nofollow noopener noreferrer\">Workflow DevKit(vercel\/workflow)<\/a> \u306e\u30b5\u30d6\u30d1\u30c3\u30b1\u30fc\u30b8\u3067\u3042\u308b <code>@workflow\/ai<\/code> \u3067 <code>DurableAgent<\/code> \u3068\u3001Agent \u306e\u62bd\u8c61\u3092\u8868\u3059\u305f\u3081\u306e\u6982\u5ff5\u304c3\u3064\u7d9a\u3051\u3066\u767b\u5834\u3057\u3066\u3044\u307e\u3059\u3002 \u672c\u8a18\u4e8b\u3067\u306f\u3053\u308c\u3089\u306e\u5b9a\u7fa9\u30fb\u5b9f\u88c5\u3084\u95a2\u9023\u3059\u308b\u30b3\u30fc\u30c9\u3092\u773a\u3081\u3001 AI SDK \u3084 TypeScript \u3067\u540c\u69d8\u306e\u30ec\u30d9\u30eb\u611f\u306e\u30e9\u30a4\u30d6\u30e9\u30ea\u306b\u304a\u3051\u308b <code>Agent<\/code> \u62bd\u8c61\u306e\u884c\u304f\u672b\u3092\u5984\u60f3\u3057\u3066\u697d\u3057\u307f\u307e\u3059\u3002 \u7279\u306b\u30aa\u30c1\u306f\u306a\u3044\u4e88\u5b9a\u3067\u3059\u3002<\/p>\n<aside class=\"msg message\"><span class=\"msg-symbol\">!<\/span><\/p>\n<div class=\"msg-content\">\n<p data-line=\"10\" class=\"code-line\">\u8a18\u4e8b\u516c\u958b\u6642\u70b9\uff082025-11-25\uff09\u3067\u3053\u308c\u30893\u3064\u306e API \u306f\u3044\u305a\u308c\u3082 Beta \u3042\u308b\u3044\u306f Experimental \u3067\u3042\u308b\u3053\u3068\u306b\u6ce8\u610f\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<\/div>\n<\/aside>\n<h2 id=\"toolloopagent-class-(ai-sdk-6-beta)\" data-line=\"13\" class=\"code-line\">\n <code>ToolLoopAgent<\/code> class (AI SDK 6 Beta)<\/h2>\n<p data-line=\"15\" class=\"code-line\">AI SDK v5 \u3067 <code>experimental_Agent<\/code> \u3068\u3057\u3066\u5c0e\u5165\u3055\u308c\u3001 AI SDK 6 \u304b\u3089 <code>ToolLoopAgent<\/code> \u3068\u30ea\u30cd\u30fc\u30e0\u3055\u308c\u5c0e\u5165\u4e88\u5b9a\u306e class \u3067\u3059\u3002<\/p>\n<ul data-line=\"17\" class=\"code-line\">\n<li data-line=\"17\" class=\"code-line\">\u30e1\u30a4\u30f3\u306e API \u306f\u5f8c\u8ff0\u3059\u308b <code>Agent<\/code> interface \u304c\u6301\u3064 <code>generate()<\/code> \u3068 <code>stream()<\/code> \u306e2\u3064<\/li>\n<li data-line=\"18\" class=\"code-line\">\u3044\u305a\u308c\u3082 <code>messages<\/code> or <code>prompt<\/code> \u3092\u5f15\u6570\u306b\u3068\u308a\u3001constructor \u7d4c\u7531\u3067\u6e21\u3057\u305f\u4ed6\u306e\u30aa\u30d7\u30b7\u30e7\u30f3\u3068\u30de\u30fc\u30b8\u3057\u3066 <code>generateText()<\/code> \u3042\u308b\u3044\u306f <code>streamText()<\/code> \u3092\u305d\u306e\u307e\u307e\u5b9f\u884c\u3059\u308b<\/li>\n<li data-line=\"19\" class=\"code-line\">\u5f93\u6765\u306e\u30aa\u30d7\u30b7\u30e7\u30f3\u306b\u52a0\u3048\u3001\u4ee5\u4e0b2\u3064\u3092\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u304b\u3089\u4e0e\u3048\u308b\u3053\u3068\u304c\u3067\u304d\u308b\n<ul data-line=\"20\" class=\"code-line\">\n<li data-line=\"20\" class=\"code-line\">\n<code>callOptionsSchema<\/code>: <code>generate()<\/code> \u304a\u3088\u3073 <code>stream()<\/code> \u5b9f\u884c\u6642\u306b\u8ffd\u52a0\u306e\u5f15\u6570\u3092\u8981\u6c42\u3067\u304d\u308b<\/li>\n<li data-line=\"21\" class=\"code-line\">\n<code>prepareCalls<\/code>: <code>generateText<\/code> \/ <code>streamText<\/code> \u306b\u6e21\u3059\u30aa\u30d7\u30b7\u30e7\u30f3\u3092\u5236\u5fa1\u53ef\u80fd<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p data-line=\"23\" class=\"code-line\">messages or prompt \u4ee5\u5916\u306e\u30aa\u30d7\u30b7\u30e7\u30f3\u3092\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u5316\u6642\u306b\u6e21\u3057\u3001\u305d\u306e\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3092\u4f7f\u3044\u56de\u3059\u3053\u3068\u3067 Agent \u306e\u6319\u52d5\u3092\u30ab\u30d7\u30bb\u30eb\u5316\u3059\u308b\u2026 \u3068\u3044\u3046\u30b3\u30f3\u30bb\u30d7\u30c8\u306a\u3093\u3067\u3057\u3087\u3046\u304b\u3002<\/p>\n<blockquote data-line=\"25\" class=\"code-line\">\n<div class=\"code-block-container\">\n<pre class=\"language-ts\"><code class=\"language-ts code-line\" data-line=\"25\">\n<span class=\"token keyword\">export<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">ToolLoopAgent<span class=\"token operator\">\n  <span class=\"token constant\">CALL_OPTIONS<\/span> <span class=\"token operator\">=<\/span> <span class=\"token builtin\">never<\/span><span class=\"token punctuation\">,<\/span>\n  <span class=\"token constant\">TOOLS<\/span> <span class=\"token keyword\">extends<\/span> ToolSet <span class=\"token operator\">=<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span>\n  <span class=\"token constant\">OUTPUT<\/span> <span class=\"token keyword\">extends<\/span> Output <span class=\"token operator\">=<\/span> <span class=\"token builtin\">never<\/span><span class=\"token punctuation\">,<\/span>\n<span class=\"token operator\">&gt;<\/span><\/span> <span class=\"token keyword\">implements<\/span> <span class=\"token class-name\">Agent<span class=\"token operator\"><span class=\"token constant\">CALL_OPTIONS<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token constant\">TOOLS<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token constant\">OUTPUT<\/span><span class=\"token operator\">&gt;<\/span><\/span>\n<span class=\"token punctuation\">{<\/span>\n  \n\n  <span class=\"token keyword\">private<\/span> <span class=\"token keyword\">async<\/span> <span class=\"token function\">prepareCall<\/span><span class=\"token punctuation\">(<\/span>\n    options<span class=\"token operator\">:<\/span> AgentCallParameters<span class=\"token operator\"><span class=\"token constant\">CALL_OPTIONS<\/span><span class=\"token operator\">&gt;<\/span><span class=\"token punctuation\">,<\/span>\n  <span class=\"token punctuation\">)<\/span><span class=\"token operator\">:<\/span> <span class=\"token builtin\">Promise<\/span><span class=\"token operator\"><span class=\"token operator\">&gt;<\/span> <span class=\"token punctuation\">{<\/span>\n    \n  <span class=\"token punctuation\">}<\/span>\n\n  <span class=\"token keyword\">async<\/span> <span class=\"token function\">generate<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">{<\/span>\n    abortSignal<span class=\"token punctuation\">,<\/span>\n    <span class=\"token operator\">...<\/span>options\n  <span class=\"token punctuation\">}<\/span><span class=\"token operator\">:<\/span> AgentCallParameters<span class=\"token operator\"><span class=\"token constant\">CALL_OPTIONS<\/span><span class=\"token operator\">&gt;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token operator\">:<\/span> <span class=\"token builtin\">Promise<\/span><span class=\"token operator\">\n    GenerateTextResult<span class=\"token operator\"><span class=\"token constant\">TOOLS<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token constant\">OUTPUT<\/span><span class=\"token operator\">&gt;<\/span>\n  <span class=\"token operator\">&gt;<\/span> <span class=\"token punctuation\">{<\/span>\n    <span class=\"token keyword\">return<\/span> <span class=\"token function\">generateText<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">{<\/span>\n      <span class=\"token operator\">...<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">await<\/span> <span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">prepareCall<\/span><span class=\"token punctuation\">(<\/span>options<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span>\n      abortSignal<span class=\"token punctuation\">,<\/span>\n    <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n  <span class=\"token punctuation\">}<\/span>\n\n  <span class=\"token keyword\">async<\/span> <span class=\"token function\">stream<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">{<\/span>\n    abortSignal<span class=\"token punctuation\">,<\/span>\n    experimental_transform<span class=\"token punctuation\">,<\/span>\n    <span class=\"token operator\">...<\/span>options\n  <span class=\"token punctuation\">}<\/span><span class=\"token operator\">:<\/span> AgentStreamParameters<span class=\"token operator\"><span class=\"token constant\">CALL_OPTIONS<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token constant\">TOOLS<\/span><span class=\"token operator\">&gt;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token operator\">:<\/span> <span class=\"token builtin\">Promise<\/span><span class=\"token operator\">\n    StreamTextResult<span class=\"token operator\"><span class=\"token constant\">TOOLS<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token constant\">OUTPUT<\/span><span class=\"token operator\">&gt;<\/span>\n  <span class=\"token operator\">&gt;<\/span> <span class=\"token punctuation\">{<\/span>\n    <span class=\"token keyword\">return<\/span> <span class=\"token function\">streamText<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">{<\/span>\n      <span class=\"token operator\">...<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">await<\/span> <span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">prepareCall<\/span><span class=\"token punctuation\">(<\/span>options<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span>\n      abortSignal<span class=\"token punctuation\">,<\/span>\n      experimental_transform<span class=\"token punctuation\">,<\/span>\n    <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n  <span class=\"token punctuation\">}<\/span>\n<span class=\"token punctuation\">}<\/span>\n<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/code><\/pre>\n<\/div>\n<\/blockquote>\n<p data-line=\"69\" class=\"code-line\">\u5b9f\u30d7\u30ed\u30c0\u30af\u30c8\u958b\u767a\u3067\u306f tracing \u3092\u306f\u3058\u3081\u3068\u3057\u3066 Observability \u306e\u305f\u3081\u306e\u8a2d\u5b9a\u3084\u30d5\u30c3\u30af\u306a\u3069\u3001\u5168\u3066\u306e Agent \u51e6\u7406\u306b\u3082\u308c\u306a\u304f\u8a2d\u5b9a\u3057\u305f\u3044\u3082\u306e\u304c\u3044\u304f\u3064\u304b\u3042\u308b\u306e\u3067\u3001\u305d\u308c\u3089\u3092\u8a2d\u5b9a\u3057\u305f <code>BaseAgent<\/code> abstract class \u3092\u4f5c\u3063\u3066\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u5185\u3067\u4f7f\u3044\u307e\u308f\u3059\u2026 \u3068\u3044\u3046\u306e\u306f\u3057\u305f\u304f\u306a\u308b\u3088\u3046\u306a\u6c17\u304c\u3057\u307e\u3059\u3002<\/p>\n<h2 id=\"agent-class-(ai-sdk-6-beta)\" data-line=\"72\" class=\"code-line\">\n <code>Agent<\/code> class (AI SDK 6 Beta)<\/h2>\n<p data-line=\"74\" class=\"code-line\"><a target=\"_blank\" href=\"https:\/\/github.com\/vercel\/ai\/pull\/9450\" target=\"_blank\" rel=\"nofollow noopener noreferrer\">vercel\/ai#9450<\/a> \u3067 <code>experimental_Agent<\/code> \u304c <code>Agent<\/code> interface \u3068 <code>BaseAgent<\/code> class\uff08\u5f8c\u306e <code>ToolLoopAgent<\/code>\uff09\u306b\u5206\u304b\u308c\u307e\u3057\u305f\u3002Pull Request \u306e description \u306b\u3088\u308b\u3068\u62e1\u5f35\u6027\u306e\u9ad8\u3044\u30fb\u30ab\u30b9\u30bf\u30de\u30a4\u30ba\u3055\u308c\u305f Agent \u3092\u5b9f\u88c5\u3067\u304d\u308b\u3088\u3046\u306b\u3059\u308b\u306e\u304c\u76ee\u7684\u3060\u305d\u3046\u3067\u3059\u3002<\/p>\n<blockquote data-line=\"76\" class=\"code-line\">\n<div class=\"code-block-container\">\n<pre class=\"language-ts\"><code class=\"language-ts code-line\" data-line=\"76\">\n<span class=\"token keyword\">export<\/span> <span class=\"token keyword\">interface<\/span> <span class=\"token class-name\">Agent<span class=\"token operator\">\n  <span class=\"token constant\">CALL_OPTIONS<\/span> <span class=\"token operator\">=<\/span> <span class=\"token builtin\">never<\/span><span class=\"token punctuation\">,<\/span>\n  <span class=\"token constant\">TOOLS<\/span> <span class=\"token keyword\">extends<\/span> ToolSet <span class=\"token operator\">=<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span>\n  <span class=\"token constant\">OUTPUT<\/span> <span class=\"token keyword\">extends<\/span> Output <span class=\"token operator\">=<\/span> <span class=\"token builtin\">never<\/span><span class=\"token punctuation\">,<\/span>\n<span class=\"token operator\">&gt;<\/span><\/span> <span class=\"token punctuation\">{<\/span>\n  <span class=\"token keyword\">readonly<\/span> version<span class=\"token operator\">:<\/span> <span class=\"token string\">'agent-v1'<\/span><span class=\"token punctuation\">;<\/span>\n  <span class=\"token keyword\">readonly<\/span> id<span class=\"token operator\">:<\/span> <span class=\"token builtin\">string<\/span> <span class=\"token operator\">|<\/span> <span class=\"token keyword\">undefined<\/span><span class=\"token punctuation\">;<\/span>\n  <span class=\"token keyword\">readonly<\/span> tools<span class=\"token operator\">:<\/span> <span class=\"token constant\">TOOLS<\/span><span class=\"token punctuation\">;<\/span>\n\n  <span class=\"token function\">generate<\/span><span class=\"token punctuation\">(<\/span>\n    options<span class=\"token operator\">:<\/span> AgentCallParameters<span class=\"token operator\"><span class=\"token constant\">CALL_OPTIONS<\/span><span class=\"token operator\">&gt;<\/span><span class=\"token punctuation\">,<\/span>\n  <span class=\"token punctuation\">)<\/span><span class=\"token operator\">:<\/span> PromiseLike<span class=\"token operator\">GenerateTextResult<span class=\"token operator\"><span class=\"token constant\">TOOLS<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token constant\">OUTPUT<\/span><span class=\"token operator\">&gt;&gt;<\/span><span class=\"token punctuation\">;<\/span>\n\n  <span class=\"token function\">stream<\/span><span class=\"token punctuation\">(<\/span>\n    options<span class=\"token operator\">:<\/span> AgentStreamParameters<span class=\"token operator\"><span class=\"token constant\">CALL_OPTIONS<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token constant\">TOOLS<\/span><span class=\"token operator\">&gt;<\/span><span class=\"token punctuation\">,<\/span>\n  <span class=\"token punctuation\">)<\/span><span class=\"token operator\">:<\/span> PromiseLike<span class=\"token operator\">StreamTextResult<span class=\"token operator\"><span class=\"token constant\">TOOLS<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token constant\">OUTPUT<\/span><span class=\"token operator\">&gt;&gt;<\/span><span class=\"token punctuation\">;<\/span>\n<span class=\"token punctuation\">}<\/span>\n<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/code><\/pre>\n<\/div>\n<\/blockquote>\n<p data-line=\"97\" class=\"code-line\">AI SDK 6 Beta \u306e\u30ea\u30ea\u30fc\u30b9\u30d6\u30ed\u30b0\u3067\u306f <code>OrchsestratorAgent<\/code> \u3092\u5b9f\u88c5\u3059\u308b\u3068\u3044\u3046\u30e6\u30fc\u30b9\u30b1\u30fc\u30b9\u4f8b\u304c\u7d39\u4ecb\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<blockquote data-line=\"99\" class=\"code-line\">\n<div class=\"code-block-container\">\n<pre class=\"language-ts\"><code class=\"language-ts code-line\" data-line=\"99\"><span class=\"token keyword\">import<\/span> <span class=\"token punctuation\">{<\/span> Agent <span class=\"token punctuation\">}<\/span> <span class=\"token keyword\">from<\/span> <span class=\"token string\">'ai'<\/span><span class=\"token punctuation\">;<\/span>\n\n\n<span class=\"token keyword\">class<\/span> <span class=\"token class-name\">Orchestrator<\/span> <span class=\"token keyword\">implements<\/span> <span class=\"token class-name\">Agent<\/span> <span class=\"token punctuation\">{<\/span>\n  <span class=\"token function\">constructor<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">private<\/span> subAgents<span class=\"token operator\">:<\/span> Record<span class=\"token operator\"><span class=\"token builtin\">string<\/span><span class=\"token punctuation\">,<\/span> Agent<span class=\"token operator\">&gt;<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span>\n    \n  <span class=\"token punctuation\">}<\/span>\n<span class=\"token punctuation\">}<\/span>\n\n<span class=\"token keyword\">const<\/span> orchestrator <span class=\"token operator\">=<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">Orchestrator<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">{<\/span>\n  subAgents<span class=\"token operator\">:<\/span> <span class=\"token punctuation\">{<\/span>\n    \n  <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span>\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n<\/span><\/code><\/pre>\n<\/div>\n<p data-line=\"116\" class=\"code-line\"><a target=\"_blank\" href=\"https:\/\/ai-sdk.dev\/docs\/announcing-ai-sdk-6-beta#custom-agent-implementations\" target=\"_blank\" rel=\"nofollow noopener noreferrer\">https:\/\/ai-sdk.dev\/docs\/announcing-ai-sdk-6-beta#custom-agent-implementations<\/a><\/p>\n<\/blockquote>\n<h3 id=\"agent-interface-%E3%81%AE%E4%BD%BF%E3%81%84%E9%81%93%E3%82%92%E8%80%83%E3%81%88%E3%81%A6%E3%81%BF%E3%82%8B\" data-line=\"118\" class=\"code-line\">\n <code>Agent<\/code> interface \u306e\u4f7f\u3044\u9053\u3092\u8003\u3048\u3066\u307f\u308b<\/h3>\n<p data-line=\"120\" class=\"code-line\">\u3053\u306e <code>Agent<\/code> \u3092\u5229\u7528\u3059\u308b API \u306f\u73fe\u72b6\u4ee5\u4e0b\u306e3\u3064\u306e\u95a2\u6570\u30681\u3064\u306e utility type \u3067\u3059\u3002<\/p>\n<ul data-line=\"122\" class=\"code-line\">\n<li data-line=\"122\" class=\"code-line\"><code>createAgentUIStream<\/code><\/li>\n<li data-line=\"123\" class=\"code-line\"><code>createAgentUIStreamResponse<\/code><\/li>\n<li data-line=\"124\" class=\"code-line\"><code>pipeAgentUIStreamResponse<\/code><\/li>\n<li data-line=\"125\" class=\"code-line\"><code>InferAgentTools<\/code><\/li>\n<\/ul>\n<p data-line=\"127\" class=\"code-line\">\u4e0a\u8a18\u306f\u3044\u305a\u308c\u3082 Agent \u306e\u51fa\u529b\u3092 stream \u3067\u30d5\u30ed\u30f3\u30c8\u30a8\u30f3\u30c9\uff08<code>useChat<\/code>\uff09\u306b\u8fd4\u3059\u305f\u3081\u306b\u4f7f\u3046\u306e\u304c\u4e3b\u306a\u7528\u9014\u3067\u3057\u3087\u3046\u3002 <code>Agent<\/code> interface \u3092\u7dad\u6301\u3057\u3066\u3044\u308c\u3070\u3001\u305d\u306e\u5b9f\u614b\u304c\u5358\u4e00  Agent \u3067\u306f\u306a\u304f\u8907\u6570\u306e Agent \u3092 Orchestrate \u3057\u305f\u3082\u306e\u3067\u3042\u3063\u3066\u3082\u3001\u81ea\u7136\u306b stream \u306b\u63a5\u7d9a\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<br \/><strong>\u300c\u547c\u3073\u51fa\u3057\u5143\u306e\u305f\u3081\u306e stream \u51e6\u7406\u300d\u3068\u3044\u3046 presentation \u306a\u77e5\u8b58\u3068\u300cAgent \u306e orchestration\u300d\u3068\u3044\u3046\u30e1\u30a4\u30f3\u30ed\u30b8\u30c3\u30af\u304c\u3001 <code>Agent<\/code> interface \u3092\u754c\u9762\u306b\u304d\u308c\u3044\u306b\u5206\u96e2\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308b<\/strong>\u2026 \u3068\u3044\u3046\u306e\u304c\u73fe\u72b6 <code>Agent<\/code> interface \u3092\u4f7f\u3046\u30e2\u30c1\u30d9\u30fc\u30b7\u30e7\u30f3\u306e1\u3064\u306b\u306a\u308a\u305d\u3046\u3067\u3059\u3002 Agent \u306e\u69cb\u6210\u3092\u5909\u3048\u308b\u305f\u3073\u306b streaming \u3057\u3066\u308b API handler \u307e\u3067\u5909\u66f4\u304c\u5fc5\u8981\u306b\u306a\u308b\u306e\u306f\u624b\u9593\u306a\u306e\u3067\u3001\u3053\u3053\u306b\u5883\u754c\u3092\u5f15\u3051\u308b\u3053\u3068\u306f\u8cac\u52d9\u306e\u5206\u89e3\u3068\u3044\u3046\u70b9\u3067\u3082\u91cd\u8981\u3067\u3059\u3002<\/p>\n<p data-line=\"130\" class=\"code-line\">\u307e\u305f\u3001 \u5177\u4f53\u306e Agent \u306b\u4f9d\u5b58\u3057\u306a\u3044\u3088\u3046\u306a\u4ed5\u7d44\u307f\u30fb\u30d5\u30ec\u30fc\u30e0\u30ef\u30fc\u30af\u3092\u81ea\u524d\u3067\u4f5c\u308b\u969b\u306b\u3082\u3053\u306e <code>Agent<\/code> interface \u306f\u5229\u7528\u3067\u304d\u308b\u3067\u3057\u3087\u3046\u3002 \u4f8b\u3048\u3070 Agent \u3092 Temporal \u306a\u3069 Durable Workflow \u306e\u4e0a\u3067\u52d5\u304b\u3059\u305f\u3081\u306e\u4f55\u3089\u304b\u306e\u30e6\u30fc\u30c6\u30a3\u30ea\u30c6\u30a3\u304c <code>Agent<\/code> \u3092\u8981\u6c42\u3059\u308b\u2026 \u3068\u3044\u3046\u4f7f\u3044\u65b9\u306f\u3042\u308a\u305d\u3046\u3067\u3059\u3002<\/p>\n<p data-line=\"132\" class=\"code-line\">\u2026\u3064\u3089\u3064\u3089\u66f8\u3044\u305f\u3051\u3069\u3001\u3069\u3061\u3089\u3082\u308f\u308a\u3068\u4e00\u822c\u7684\u306a interface \u306e\u5229\u7528\u7528\u9014\u3067\u3059\u306d\u3002<\/p>\n<p data-line=\"134\" class=\"code-line\">\u4e00\u65b9\u3067\u3001<code>generate()<\/code> \u3068 <code>stream()<\/code> \u306f\u3044\u305a\u308c\u3082 <code>generateText()<\/code> \u3068 <code>streamText()<\/code> \u306e\u8fd4\u308a\u5024\u306e\u578b\u306b\u4f9d\u5b58\u3057\u3066\u3044\u307e\u3059\u3002 \u7279\u306b\u5f8c\u8005\u306e\u578b <code>StreamTextResult<\/code> \u306f\u81ea\u5206\u3067\u4f5c\u308b\u306e\u306f\u3042\u307e\u308a\u73fe\u5b9f\u7684\u3067\u306f\u306a\u3044\u3088\u3046\u306a\u6c17\u304c\u3057\u307e\u3059\u3002 \u4eca\u306e\u3068\u3053\u308d\u51e6\u7406\u5b9f\u614b\u306f <code>streamText()<\/code> \u3042\u308b\u3044\u306f <code>ToolLoopAgent.prototype.stream()<\/code> \u3092\u4f7f\u3046\u3053\u3068\u304c\u524d\u63d0\u3068\u306a\u308a\u305d\u3046\u3067\u3059\u3002 \u3053\u308c\u306f\u5f8c\u8ff0\u3059\u308b <code>DurableAgent<\/code> \u306e\u6210\u719f\u3067\u5909\u308f\u3063\u305f\u308a\u3059\u308b\u306e\u304b\u2026 \u500b\u4eba\u7684\u306b\u306f\u6ce8\u76ee\u30dd\u30a4\u30f3\u30c8\u306e\u4e00\u3064\u3067\u3059\u3002<\/p>\n<h2 id=\"durableagent-(workflow-devkit-beta%2C-%40workflow%2Fai-experimental)\" data-line=\"137\" class=\"code-line\">\n <code>DurableAgent<\/code> (Workflow DevKit beta, <code>@workflow\/ai<\/code> experimental)<\/h2>\n<p data-line=\"139\" class=\"code-line\"><code>DurableAgent<\/code> \u306f10\u6708\u4e0b\u65ec\u306b Vercel \u3088\u308a\u516c\u958b\u3055\u308c\u305f <a target=\"_blank\" href=\"https:\/\/useworkflow.dev\/\" target=\"_blank\" rel=\"nofollow noopener noreferrer\">Workflow DevKit<\/a> \u304c\u63d0\u4f9b\u3059\u308b\u5b9f\u88c5\u306e1\u3064\u3067\u3001\u3053\u308c\u3092\u5229\u7528\u3059\u308b\u3053\u3068\u3067 Agent \u304c\u7c21\u5358\u306b Durable \u306b\u5b9f\u884c\u3067\u304d\u308b\u3068\u3044\u3046\u3082\u306e\u3067\u3059\u3002<\/p>\n<p data-line=\"141\" class=\"code-line\"><span class=\"embed-block zenn-embedded zenn-embedded-card\"><iframe id=\"zenn-embedded__a62187ea1be89\" src=\"https:\/\/embed.zenn.studio\/card#zenn-embedded__a62187ea1be89\" data-content=\"https%3A%2F%2Fuseworkflow.dev%2Fdocs%2Fapi-reference%2Fworkflow-ai%2Fdurable-agent\" frameborder=\"0\" scrolling=\"no\" loading=\"lazy\"><\/iframe><\/span><a target=\"_blank\" href=\"https:\/\/useworkflow.dev\/docs\/api-reference\/workflow-ai\/durable-agent\" style=\"display:none\" target=\"_blank\" rel=\"nofollow noopener noreferrer\">https:\/\/useworkflow.dev\/docs\/api-reference\/workflow-ai\/durable-agent<\/a><\/p>\n<p data-line=\"143\" class=\"code-line\">\u300cAgent \u306e Durable \u306a\u5b9f\u884c\u300d\u306b\u3064\u3044\u3066\u306f\u30d6\u30ed\u30b0\u30ea\u30ec\u30fc14\u65e5\u76ee\u3067\u7d39\u4ecb\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<p data-line=\"145\" class=\"code-line\"><span class=\"embed-block zenn-embedded zenn-embedded-card\"><iframe id=\"zenn-embedded__9e14d7e9e7ccd\" src=\"https:\/\/embed.zenn.studio\/card#zenn-embedded__9e14d7e9e7ccd\" data-content=\"https%3A%2F%2Fzenn.dev%2Flayerx%2Farticles%2Fb5f6cf6e47221e\" frameborder=\"0\" scrolling=\"no\" loading=\"lazy\"><\/iframe><\/span><a target=\"_blank\" href=\"https:\/\/zenn.dev\/layerx\/articles\/b5f6cf6e47221e\" style=\"display:none\" target=\"_blank\">https:\/\/zenn.dev\/layerx\/articles\/b5f6cf6e47221e<\/a><\/p>\n<p data-line=\"147\" class=\"code-line\">\u4eca\u56de\u306f\u5148\u306b\u30b3\u30fc\u30c9\u4f8b\u3092\u793a\u3057\u307e\u3059\u3002<\/p>\n<blockquote data-line=\"149\" class=\"code-line\">\n<div class=\"code-block-container\">\n<pre class=\"language-ts\"><code class=\"language-ts code-line\" data-line=\"149\"><span class=\"token keyword\">async<\/span> <span class=\"token keyword\">function<\/span> <span class=\"token function\">getWeather<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">{<\/span> city <span class=\"token punctuation\">}<\/span><span class=\"token operator\">:<\/span> <span class=\"token punctuation\">{<\/span> city<span class=\"token operator\">:<\/span> <span class=\"token builtin\">string<\/span> <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span>\n  <span class=\"token string\">\"use step\"<\/span><span class=\"token punctuation\">;<\/span>\n  <span class=\"token keyword\">return<\/span> <span class=\"token template-string\"><span class=\"token template-punctuation string\">`<\/span><span class=\"token string\">Weather in <\/span><span class=\"token interpolation\"><span class=\"token interpolation-punctuation punctuation\">${<\/span>city<span class=\"token interpolation-punctuation punctuation\">}<\/span><\/span><span class=\"token string\"> is sunny<\/span><span class=\"token template-punctuation string\">`<\/span><\/span><span class=\"token punctuation\">;<\/span>\n<span class=\"token punctuation\">}<\/span>\n\n<span class=\"token keyword\">async<\/span> <span class=\"token keyword\">function<\/span> <span class=\"token function\">myAgent<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span>\n  <span class=\"token string\">\"use workflow\"<\/span><span class=\"token punctuation\">;<\/span>\n\n  <span class=\"token keyword\">const<\/span> agent <span class=\"token operator\">=<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">DurableAgent<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">{<\/span>\n    model<span class=\"token operator\">:<\/span> <span class=\"token string\">'anthropic\/claude-haiku-4.5'<\/span><span class=\"token punctuation\">,<\/span>\n    system<span class=\"token operator\">:<\/span> <span class=\"token string\">'You are a helpful weather assistant.'<\/span><span class=\"token punctuation\">,<\/span>\n    tools<span class=\"token operator\">:<\/span> <span class=\"token punctuation\">{<\/span>\n      getWeather<span class=\"token operator\">:<\/span> <span class=\"token punctuation\">{<\/span>\n        description<span class=\"token operator\">:<\/span> <span class=\"token string\">'Get weather for a city'<\/span><span class=\"token punctuation\">,<\/span>\n        inputSchema<span class=\"token operator\">:<\/span> z<span class=\"token punctuation\">.<\/span><span class=\"token function\">object<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">{<\/span> city<span class=\"token operator\">:<\/span> z<span class=\"token punctuation\">.<\/span><span class=\"token function\">string<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span>\n        execute<span class=\"token operator\">:<\/span> getWeather<span class=\"token punctuation\">,<\/span>\n      <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span>\n    <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span>\n  <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n\n  <span class=\"token keyword\">const<\/span> writable <span class=\"token operator\">=<\/span> <span class=\"token generic-function\"><span class=\"token function\">getWritable<\/span><span class=\"token generic class-name\"><span class=\"token operator\">UIMessageChunk<span class=\"token operator\">&gt;<\/span><\/span><\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n\n  <span class=\"token keyword\">await<\/span> agent<span class=\"token punctuation\">.<\/span><span class=\"token function\">stream<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">{<\/span>\n    messages<span class=\"token operator\">:<\/span> <span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">{<\/span> role<span class=\"token operator\">:<\/span> <span class=\"token string\">'user'<\/span><span class=\"token punctuation\">,<\/span> content<span class=\"token operator\">:<\/span> <span class=\"token string\">'How is the weather in San Francisco?'<\/span> <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">,<\/span>\n    writable<span class=\"token punctuation\">,<\/span>\n  <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n<span class=\"token punctuation\">}<\/span>\n<\/span><\/code><\/pre>\n<\/div>\n<p data-line=\"178\" class=\"code-line\"><a target=\"_blank\" href=\"https:\/\/useworkflow.dev\/docs\/api-reference\/workflow-ai\/durable-agent\" target=\"_blank\" rel=\"nofollow noopener noreferrer\">https:\/\/useworkflow.dev\/docs\/api-reference\/workflow-ai\/durable-agent<\/a><\/p>\n<\/blockquote>\n<h3 id=\"durableagent-%E3%81%AB%E3%81%8A%E3%81%91%E3%82%8B-workflow-%2F-step-%E3%81%AE%E4%BD%BF%E3%81%84%E5%88%86%E3%81%91\" data-line=\"180\" class=\"code-line\">\n <code>DurableAgent<\/code> \u306b\u304a\u3051\u308b Workflow \/ Step \u306e\u4f7f\u3044\u5206\u3051<\/h3>\n<p data-line=\"182\" class=\"code-line\">Workflow DevKit \u3067\u306f Workflow\uff08\u30b9\u30c6\u30c3\u30d7\u306e\u5b9f\u884c\u5236\u5fa1\uff09\u3068 Step\uff08\u5b9f\u969b\u306e\u51e6\u7406\uff09\u3092\u305d\u308c\u305e\u308c <code>'use workflow'<\/code>, <code>'use step'<\/code> \u3068\u3044\u3046\u30c7\u30a3\u30ec\u30af\u30c6\u30a3\u30d6\u3067\u5236\u5fa1\u3057\u307e\u3059\u304c\u3001<strong><code>DurableAgent<\/code> \u3092\u4f7f\u3048\u3070 Agent Loop \u306e\u5b9f\u88c5\u306e\u3046\u3061\u6c7a\u5b9a\u8ad6\u7684\u306b\u51e6\u7406\u3067\u304d\u306a\u3044 LLM \u547c\u3073\u51fa\u3057\u306e\u90e8\u5206\u3092\u5185\u90e8\u7684\u306b Step \u3068\u3057\u3066\u6271\u3063\u3066\u304f\u308c\u307e\u3059\u3002<\/strong><\/p>\n<div class=\"code-block-container\">\n<pre class=\"language-ts\"><code class=\"language-ts code-line\" data-line=\"184\">\n<span class=\"token keyword\">export<\/span> <span class=\"token keyword\">async<\/span> <span class=\"token keyword\">function<\/span> <span class=\"token function\">doStreamStep<\/span><span class=\"token punctuation\">(<\/span>\n  \n<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span>\n  <span class=\"token string\">'use step'<\/span><span class=\"token punctuation\">;<\/span>\n\n  \n\n  <span class=\"token keyword\">const<\/span> result <span class=\"token operator\">=<\/span> <span class=\"token keyword\">await<\/span> model<span class=\"token punctuation\">.<\/span><span class=\"token function\">doStream<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">{<\/span>\n    prompt<span class=\"token operator\">:<\/span> conversationPrompt<span class=\"token punctuation\">,<\/span>\n    tools<span class=\"token punctuation\">,<\/span>\n  <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n<\/code><\/pre>\n<\/div>\n<p data-line=\"199\" class=\"code-line\">Tool \u306e\u5b9f\u884c\u306b\u3064\u3044\u3066\u306f\u5b9f\u88c5\u8005\u306b\u59d4\u306d\u3089\u308c\u3066\u304a\u308a\u3001\u5148\u307b\u3069\u306e\u30b3\u30fc\u30c9\u4f8b\u306f <code>'use step';<\/code> \u304c\u4ed8\u3044\u3066\u3044\u308b\u305f\u3081 Step \u3068\u3057\u3066\u6271\u308f\u308c\u308b\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<p data-line=\"201\" class=\"code-line\">\u3053\u306e <strong>Tool \u5b9f\u884c\u306e\u6271\u3044\u304c\u5b9f\u88c5\u8005\u306b\u59d4\u306d\u3089\u308c\u3066\u3044\u308b<\/strong>\u3001\u3068\u3044\u3046\u306e\u306f\u975e\u5e38\u306b\u5b09\u3057\u3044\u30dd\u30a4\u30f3\u30c8\u3067\u3059\u3002 \u30c4\u30fc\u30eb\u5b9f\u884c\u3082\u5358\u306a\u308b\u5916\u90e8 API \u547c\u3073\u51fa\u3057\u3067\u3042\u308c\u3070 Step \u3067\u3044\u3044\u306e\u3067\u3059\u304c\u3001\u4f8b\u3048\u3070 Agent as Tool \u7684\u306b\u5225 Agent \u3092\u547c\u3073\u51fa\u3057\u305f\u3044\u30b1\u30fc\u30b9\u3067\u306f\u81ea\u660e\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002 Tool \u547c\u3073\u51fa\u3057\u3092\u542b\u3080 Agent Loop \u306e\u30ed\u30b8\u30c3\u30af\u304c <code>generateText()<\/code> \/ <code>streamText()<\/code> \u5185\u306b\u3079\u3063\u305f\u308a\u5b9f\u88c5\u3055\u308c\u3066\u3044\u308b\u305f\u3081 Activity(Step) \u3068 Workflow \u306e\u5206\u96e2\u304c\u96e3\u3057\u304f\u3001 Temporal \u4e0a\u3067\u306e\u5b9f\u73fe\u306f\u5927\u5909\u3067\u3059\u3002\u3057\u304b\u3057\u3001 Workflow DevKit \u3067\u306f\u306a\u305c\u304b\u3044\u3044\u611f\u3058\u306b\u306a\u3063\u3066\u304f\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<h3 id=\"durableagent-%E3%81%AE%E5%86%85%E9%83%A8%E5%AE%9F%E8%A3%85\" data-line=\"203\" class=\"code-line\">\n <code>DurableAgent<\/code> \u306e\u5185\u90e8\u5b9f\u88c5<\/h3>\n<p data-line=\"205\" class=\"code-line\">\u3067\u306f\u3053\u308c\u304c\u3069\u3046\u5b9f\u73fe\u3055\u308c\u3066\u3044\u308b\u304b\u3001\u6539\u3081\u3066 <code>DurableAgent<\/code> \u306e\u30b3\u30fc\u30c9\u3092\u898b\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n<blockquote data-line=\"207\" class=\"code-line\">\n<div class=\"code-block-container\">\n<pre class=\"language-ts\"><code class=\"language-ts code-line\" data-line=\"207\">\n<span class=\"token keyword\">export<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">DurableAgent<\/span> <span class=\"token punctuation\">{<\/span>\n  <span class=\"token function\">constructor<\/span><span class=\"token punctuation\">(<\/span>options<span class=\"token operator\">:<\/span> DurableAgentOptions<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span>\n    <span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span>model <span class=\"token operator\">=<\/span> options<span class=\"token punctuation\">.<\/span>model<span class=\"token punctuation\">;<\/span>\n    <span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span>tools <span class=\"token operator\">=<\/span> options<span class=\"token punctuation\">.<\/span>tools <span class=\"token operator\">??<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span>\n    <span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span>system <span class=\"token operator\">=<\/span> options<span class=\"token punctuation\">.<\/span>system<span class=\"token punctuation\">;<\/span>\n  <span class=\"token punctuation\">}<\/span>\n\n  <span class=\"token function\">generate<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span>\n    <span class=\"token keyword\">throw<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">Error<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">'Not implemented'<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n  <span class=\"token punctuation\">}<\/span>\n\n  <span class=\"token keyword\">async<\/span> <span class=\"token function\">stream<\/span><span class=\"token punctuation\">(<\/span>options<span class=\"token operator\">:<\/span> DurableAgentStreamOptions<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span>\n    <span class=\"token keyword\">const<\/span> prompt <span class=\"token operator\">=<\/span> <span class=\"token keyword\">await<\/span> <span class=\"token function\">standardizePrompt<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">{<\/span>  <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n\n    <span class=\"token keyword\">const<\/span> modelPrompt <span class=\"token operator\">=<\/span> <span class=\"token keyword\">await<\/span> <span class=\"token function\">convertToLanguageModelPrompt<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">{<\/span>  <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n\n    <span class=\"token keyword\">const<\/span> iterator <span class=\"token operator\">=<\/span> <span class=\"token function\">streamTextIterator<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">{<\/span>  <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n\n    <span class=\"token keyword\">let<\/span> result <span class=\"token operator\">=<\/span> <span class=\"token keyword\">await<\/span> iterator<span class=\"token punctuation\">.<\/span><span class=\"token function\">next<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n    <span class=\"token keyword\">while<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token operator\">!<\/span>result<span class=\"token punctuation\">.<\/span>done<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span>\n      <span class=\"token keyword\">const<\/span> toolCalls <span class=\"token operator\">=<\/span> result<span class=\"token punctuation\">.<\/span>value<span class=\"token punctuation\">;<\/span>\n      <span class=\"token keyword\">const<\/span> toolResults <span class=\"token operator\">=<\/span> <span class=\"token keyword\">await<\/span> <span class=\"token builtin\">Promise<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">all<\/span><span class=\"token punctuation\">(<\/span>\n        toolCalls<span class=\"token punctuation\">.<\/span><span class=\"token function\">map<\/span><span class=\"token punctuation\">(<\/span>\n          <span class=\"token punctuation\">(<\/span>toolCall<span class=\"token punctuation\">)<\/span><span class=\"token operator\">:<\/span> <span class=\"token builtin\">Promise<\/span><span class=\"token operator\">LanguageModelV2ToolResultPart<span class=\"token operator\">&gt;<\/span> <span class=\"token operator\">=&gt;<\/span>\n            <span class=\"token function\">executeTool<\/span><span class=\"token punctuation\">(<\/span>toolCall<span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span>tools<span class=\"token punctuation\">)<\/span>\n        <span class=\"token punctuation\">)<\/span>\n      <span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n      result <span class=\"token operator\">=<\/span> <span class=\"token keyword\">await<\/span> iterator<span class=\"token punctuation\">.<\/span><span class=\"token function\">next<\/span><span class=\"token punctuation\">(<\/span>toolResults<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n    <span class=\"token punctuation\">}<\/span>\n\n    <span class=\"token keyword\">const<\/span> sendFinish <span class=\"token operator\">=<\/span> options<span class=\"token punctuation\">.<\/span>sendFinish <span class=\"token operator\">??<\/span> <span class=\"token boolean\">true<\/span><span class=\"token punctuation\">;<\/span>\n    <span class=\"token keyword\">const<\/span> preventClose <span class=\"token operator\">=<\/span> options<span class=\"token punctuation\">.<\/span>preventClose <span class=\"token operator\">??<\/span> <span class=\"token boolean\">false<\/span><span class=\"token punctuation\">;<\/span>\n\n    \n    <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>sendFinish <span class=\"token operator\">||<\/span> <span class=\"token operator\">!<\/span>preventClose<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span>\n      <span class=\"token keyword\">await<\/span> <span class=\"token function\">closeStream<\/span><span class=\"token punctuation\">(<\/span>options<span class=\"token punctuation\">.<\/span>writable<span class=\"token punctuation\">,<\/span> preventClose<span class=\"token punctuation\">,<\/span> sendFinish<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n    <span class=\"token punctuation\">}<\/span>\n\n    \n    \n    <span class=\"token keyword\">const<\/span> messages <span class=\"token operator\">=<\/span> result<span class=\"token punctuation\">.<\/span>value <span class=\"token keyword\">as<\/span> ModelMessage<span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span>\n\n    <span class=\"token keyword\">return<\/span> <span class=\"token punctuation\">{<\/span> messages <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span>\n  <span class=\"token punctuation\">}<\/span>\n<span class=\"token punctuation\">}<\/span>\n<\/span><\/code><\/pre>\n<\/div>\n<\/blockquote>\n<p data-line=\"256\" class=\"code-line\"><strong>\u306a\u3093\u3068\u3001 <code>streamText()<\/code> \u306a\u3069\u306f\u4f7f\u308f\u305a\u72ec\u81ea\u5b9f\u88c5\u306e <a target=\"_blank\" href=\"https:\/\/github.com\/vercel\/workflow\/blob\/71d1757d0fd5f6971dfff6fc1b5601c3cfef6d53\/packages\/ai\/src\/agent\/stream-text-iterator.ts#L17\" target=\"_blank\" rel=\"nofollow noopener noreferrer\"><code>streamTextIterator()<\/code><\/a> \u3092\u547c\u3073\u51fa\u3057\u3066\u3044\u308b\u3053\u3068\u304c\u308f\u304b\u308a\u307e\u3059\u3002<\/strong> \u3053\u3053\u304b\u3089\u30b3\u30fc\u30c9\u3092\u8aad\u307f\u9032\u3081\u3066\u3044\u3063\u3066\u3082\u57fa\u672c\u7684\u306b\u306f\u5168\u3066\u72ec\u81ea\u5b9f\u88c5\u306b\u306a\u3063\u3066\u304a\u308a\u3001 AI SDK \u306b\u4f9d\u5b58\u3057\u3066\u3044\u308b\u306e\u306f\u30e2\u30c7\u30eb\u547c\u3073\u51fa\u3057\u90e8\u5206\uff08<code>LanguageModelV2<\/code>\uff09\u304f\u3089\u3044\u306b\u3067\u3059\u3002 Agent Loop \u306f\u304a\u304a\u3080\u306d\u5b9f\u88c5\u3057\u76f4\u3057\u3066\u3044\u308b\u3068\u3044\u3046\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002\u3073\u3063\u304f\u308a\u3002<\/p>\n<p data-line=\"258\" class=\"code-line\">\u3053\u306e\u5185\u90e8\u5b9f\u88c5\u306b\u3064\u3044\u3066 <code>DurableAgent<\/code> \u304c experimental \u3068\u3044\u3046\u3053\u3068\u3082\u3042\u308a\u3001\u307e\u3060\u307e\u3060\u5909\u5316\u3057\u3066\u3044\u304f\u3067\u3057\u3087\u3046\u3002 \u3082\u3057\u304b\u3057\u305f\u3089 <code>DurableAgent<\/code> \u5b9f\u88c5\u306e\u904e\u7a0b\u3067 <code>generateText()<\/code> \/ <code>streamText()<\/code> \u306e\u5185\u90e8\u5b9f\u88c5\u304c\u6574\u7406\u3055\u308c\u3001 AI SDK \u5229\u7528\u8005\u304c Agent Loop \u3092\u3088\u308a\u67d4\u8edf\u306b\u30ab\u30b9\u30bf\u30de\u30a4\u30ba\u3067\u304d\u308b\u3088\u3046\u306a\u30d5\u30c3\u30af\u3084\u4f4e\u30ec\u30d9\u30eb API \u304c\u6574\u5099\u3055\u308c\u308b\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u3002 \u305d\u3046\u306a\u308b\u3068 Temporal \u306b\u4e57\u305b\u308b\u3068\u304d\u3082\u4fbf\u5229\u306a\u3093\u3060\u3051\u3069\u306a\u3042\u2026\u3002<\/p>\n<h3 id=\"durableagent-%E3%81%AF-ai-sdk-6-%E3%81%AE-agent-interface-%E3%82%92%E5%AE%9F%E8%A3%85%E3%81%97%E3%81%A6%E3%81%84%E3%81%AA%E3%81%84\" data-line=\"260\" class=\"code-line\">\n <code>DurableAgent<\/code> \u306f AI SDK 6 \u306e <code>Agent<\/code> interface \u3092\u5b9f\u88c5\u3057\u3066\u3044\u306a\u3044<\/h3>\n<p data-line=\"262\" class=\"code-line\">DurableAgent \u306e <code>stream()<\/code> \u306f <code>async stream(options: DurableAgentStreamOptions): Promise<modelmessage\/><\/code> \u3068\u3044\u3046\u30b7\u30b0\u30cd\u30c1\u30e3\u306b\u306a\u3063\u3066\u3044\u307e\u3059\u3002 \u306a\u3093\u3068\u3001\u5148\u307b\u3069\u7d39\u4ecb\u3057\u305f <code>Agent<\/code> \u304c\u5b9f\u88c5\u3055\u308c\u3066\u3044\u307e\u305b\u3093\u3002 \u307e\u305a <code>stream()<\/code> \u306e\u8cac\u52d9\u3082\u3061\u3087\u3063\u3068\u9055\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n<ul data-line=\"264\" class=\"code-line\">\n<li data-line=\"264\" class=\"code-line\">\n<code>Agent<\/code> interface \u306e <code>stream()<\/code><\/p>\n<ul data-line=\"265\" class=\"code-line\">\n<li data-line=\"265\" class=\"code-line\">\u30e1\u30c3\u30bb\u30fc\u30b8\u30b9\u30c8\u30ea\u30fc\u30e0\u3092 <code>AsyncIterable<\/code> \u3067\u8fd4\u3057\u3001\u305d\u306e\u7528\u9014\u306f\u547c\u3073\u51fa\u3057\u5074\u306b\u4e00\u4efb\u3055\u308c\u308b<\/li>\n<li data-line=\"266\" class=\"code-line\">\u30b9\u30c8\u30ea\u30fc\u30e0\u306f <code>UIMessageChunk<\/code> \u306e\u307b\u304b\u3001<code>string<\/code> \u306a\u3069\u3067\u3082\u53d6\u308a\u51fa\u3057\u53ef\u80fd<\/li>\n<\/ul>\n<\/li>\n<li data-line=\"267\" class=\"code-line\">\n<code>DurableAgent<\/code> class \u306e <code>stream()<\/code><\/p>\n<ul data-line=\"268\" class=\"code-line\">\n<li data-line=\"268\" class=\"code-line\">\u5f15\u6570\u306b <code>WritableStream<\/code> \u3092\u53d7\u3051\u53d6\u308a\u3001\u305d\u308c\u3092 <code>UIMessageChunk<\/code> \u3092\u66f8\u304d\u8fbc\u3093\u3067\u3057\u307e\u3046<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p data-line=\"270\" class=\"code-line\">\u3068\u3044\u3046\u3053\u3068\u3067\u3001\u300c<code>UIMessageChunk<\/code> \u3092\u66f8\u304d\u8fbc\u3080\u300d\u3068\u3053\u308d\u307e\u3067\u306f\u898f\u5b9a\u3055\u308c\u3066\u3057\u307e\u3063\u3066\u3044\u307e\u3059\u3002 step \u304b\u3089 workflow \u306b\u76f4\u63a5 <code>AsyncIterable<\/code> \u3092\u8fd4\u3059\u306e\u304c\u96e3\u3057\u3044\u304b\u3089\u2026\u304b\uff1f \u306a\u306e\u3067\u3001\u3042\u308b Agent \u306e\u51fa\u529b\u3092\u5225\u306e Agent \u306b\u6d41\u3059\u3068\u304d\u306f <a target=\"_blank\" href=\"https:\/\/useworkflow.dev\/docs\/foundations\/streaming\" target=\"_blank\" rel=\"nofollow noopener noreferrer\">Workflow DevKit \u304c\u63d0\u4f9b\u3059\u308b stream \u306e\u6a5f\u69cb<\/a>\u3092\u901a\u3059\u3053\u3068\u306b\u306a\u308a\u305d\u3046\u3067\u3059\u3002 \u305d\u3082\u305d\u3082 API \u306e\u5171\u901a\u5316\u304c\u96e3\u3057\u3044\u3093\u3067\u3059\u306d\u3002<\/p>\n<p data-line=\"272\" class=\"code-line\">\u9006\u306b\u3001Agent \u306e\u30dd\u30fc\u30bf\u30d3\u30ea\u30c6\u30a3\u3092\u9ad8\u3081\u308b\u305f\u3081\u306b <code>Agent<\/code> interface \u304c Workflow DevKit \u3067\u3082\u5229\u7528\u3067\u304d\u308b\u304b\u305f\u3061\u306b\u5909\u5316\u3057\u305f\u308a\u3067\u304d\u308c\u3070\u307e\u305f\u697d\u3057\u3044\u3093\u3067\u3059\u3051\u3069\u306d\u3002 \u306a\u3093\u304b\u3046\u307e\u3044 API \u306a\u3044\u304b\u306a\u3042\u3002<\/p>\n<h2 id=\"%E3%81%8A%E3%82%8F%E3%82%8A%E3%81%AB\" data-line=\"275\" class=\"code-line\">\n \u304a\u308f\u308a\u306b<\/h2>\n<p data-line=\"277\" class=\"code-line\">Workflow DevKit \u306e\u767b\u5834\u3067 <strong>AI SDK \u5074\u306b\u3088\u308a\u4f4e\u30ec\u30d9\u30eb\u306a\u30ec\u30a4\u30e4\u306e API \u5316\u306e\u30e2\u30c1\u30d9\u30fc\u30b7\u30e7\u30f3\u304c\u767a\u751f\u3057\u3066\u305d\u3046<\/strong>\u306a\u306e\u304c\u500b\u4eba\u7684\u306a\u6ce8\u76ee\u30dd\u30a4\u30f3\u30c8\u3067\u3057\u305f\u3002 \u73fe\u72b6 Workflow DevKit \u304c Vercel \u4e0a\u3067\u306e\u5229\u7528\u304c\u524d\u63d0\u306b\u306a\u3063\u3066\u3044\u308b\u4e2d\u3067\u3001AI SDK \u5074\u306e\u4f4e\u30ec\u30d9\u30eb API \u304c\u5145\u5b9f\u3059\u308c\u3070 Temporal \u306a\u3069\u5225\u306e Durable Workflow \u57fa\u76e4\u4e0a\u3067 AI SDK \u3092\u6271\u3044\u3084\u3059\u304f\u306a\u308a\u307e\u3059\u3002 \u4e00\u65b9\u3067\u3001 Workflow DevKit \u306f\u3053\u3053\u3067\u7d39\u4ecb\u3057\u306a\u304b\u3063\u305f Stream \u3092\u306f\u3058\u3081\u3068\u3057\u305f AI Agent \u6642\u4ee3\u306e Durable Workflow \u3092\u4f5c\u308a\u306b\u6765\u3066\u308b\u611f\u3082\u3042\u308a\u3001\u975e\u5e38\u306b\u697d\u3057\u307f\u3067\u3059\u3002<\/p>\n<p data-line=\"279\" class=\"code-line\">\u305f\u3060\u306e\u30e9\u30a4\u30d6\u30e9\u30ea\u30fb\u30d5\u30ec\u30fc\u30e0\u30ef\u30fc\u30af\u8a2d\u8a08\u30aa\u30bf\u30af\u304c API \u3092\u773a\u3081\u3066\u30cb\u30e4\u30cb\u30e4\u3059\u308b\u3060\u3051\u306e\u8a18\u4e8b\u306b\u306a\u3063\u3066\u3057\u307e\u3044\u307e\u3057\u305f\u304c\u3001\u3053\u306e3\u3064\u306e class \u3042\u308b\u3044\u306f interface \u3092\u773a\u3081\u308b\u3060\u3051\u3067\u3082\u307e\u3060\u307e\u3060 Agent \u306f\u5965\u304c\u6df1\u304f\u3001\u62bd\u8c61\u5316\u3092\u63a8\u3057\u9032\u3081\u308b\u305f\u3081\u306b\u306f\u307e\u3060\u307e\u3060\u5148\u304c\u898b\u3048\u306a\u3044\u72b6\u614b\u306a\u3093\u3060\u306a\u3042\u3068\u3044\u3046\u306e\u304c\u4f1d\u308f\u3063\u3066\u304f\u308b\u611f\u3058\u304c\u3057\u307e\u3059\u3002 \u3042\u308c\u3060\u3051 AI Agent \u306b\u6295\u8cc7\u3057\u3066\u308b Vercel \u3067\u3059\u3089\u624b\u63a2\u308a\u306a\u306e\u3067\u3001\u3084\u306f\u308a\u307e\u3060\u307e\u3060\u904a\u3073\u306e\u4f59\u5730\u304c\u5927\u304d\u3044\u9818\u57df\u3067\u306f\u3042\u308a\u305d\u3046\u3067\u3059\u3002<\/p>\n<\/div>\n\n<br \/><a href=\"https:\/\/zenn.dev\/layerx\/articles\/ca93d8a80b05f1\">\u5143\u306e\u8a18\u4e8b\u3092\u78ba\u8a8d\u3059\u308b <\/a><\/p>\n","protected":false},"excerpt":{"rendered":"LayerX AI \u30a8\u30fc\u30b8\u30a7\u30f3\u30c8\u30d6\u30ed\u30b0\u30ea\u30ec\u30fc 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