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model",[488,735,678],{"class":498},[488,737,613],{"class":502},[488,739,664],{"class":498},[488,741,742],{"class":558},"wrap",[488,744,562],{"class":600},[488,746,686],{"class":498},[488,748,749],{"class":515},"anthropic\u002Fclaude-sonnet-4.6",[488,751,686],{"class":498},[488,753,576],{"class":600},[488,755,756],{"class":498},",\n",[488,758,760,763],{"class":490,"line":759},13,[488,761,762],{"class":502},"    messages",[488,764,756],{"class":498},[488,766,768,771,773,776,779,782,784],{"class":490,"line":767},14,[488,769,770],{"class":558},"    onFinish",[488,772,678],{"class":498},[488,774,775],{"class":498}," ({",[488,777,778],{"class":572}," text",[488,780,781],{"class":498}," })",[488,783,579],{"class":565},[488,785,582],{"class":498},[488,787,789,792,794,797],{"class":490,"line":788},15,[488,790,791],{"class":558},"      saveConversation",[488,793,562],{"class":600},[488,795,796],{"class":502},"text",[488,798,605],{"class":600},[488,800,802],{"class":490,"line":801},16,[488,803,804],{"class":498},"    },\n",[488,806,808,811],{"class":490,"line":807},17,[488,809,810],{"class":498},"  }",[488,812,605],{"class":600},[488,814,816],{"class":490,"line":815},18,[488,817,546],{"emptyLinePlaceholder":545},[488,819,821,824,826,828,831],{"class":490,"line":820},19,[488,822,823],{"class":494},"  return",[488,825,718],{"class":502},[488,827,664],{"class":498},[488,829,830],{"class":558},"toTextStreamResponse",[488,832,833],{"class":600},"()\n",[488,835,837,840],{"class":490,"line":836},20,[488,838,839],{"class":498},"}",[488,841,605],{"class":502},[446,843,844,845,848],{},"The middleware never touches your ",[450,846,847],{},"onFinish"," callback — your code runs as usual.",[470,850,852],{"id":851},"generatetext","generateText",[446,854,855],{},"Synchronous generation. The middleware captures the result automatically:",[478,857,860],{"className":480,"code":858,"filename":859,"language":483,"meta":484,"style":484},"import { generateText } from 'ai'\nimport { createAILogger } from 'evlog\u002Fai'\n\nexport default defineEventHandler(async (event) => {\n  const log = useLogger(event)\n  const ai = createAILogger(log)\n\n  const result = await generateText({\n    model: ai.wrap('anthropic\u002Fclaude-sonnet-4.6'),\n    prompt: 'Summarize this document',\n  })\n\n  return { text: result.text }\n})\n","server\u002Fapi\u002Fsummarize.post.ts",[450,861,862,881,899,903,925,941,957,961,977,1001,1017,1023,1027,1046],{"__ignoreMap":484},[488,863,864,866,868,871,873,875,877,879],{"class":490,"line":491},[488,865,495],{"class":494},[488,867,499],{"class":498},[488,869,870],{"class":502}," generateText",[488,872,506],{"class":498},[488,874,509],{"class":494},[488,876,512],{"class":498},[488,878,467],{"class":515},[488,880,518],{"class":498},[488,882,883,885,887,889,891,893,895,897],{"class":490,"line":521},[488,884,495],{"class":494},[488,886,499],{"class":498},[488,888,528],{"class":502},[488,890,506],{"class":498},[488,892,509],{"class":494},[488,894,512],{"class":498},[488,896,537],{"class":515},[488,898,518],{"class":498},[488,900,901],{"class":490,"line":542},[488,902,546],{"emptyLinePlaceholder":545},[488,904,905,907,909,911,913,915,917,919,921,923],{"class":490,"line":549},[488,906,552],{"class":494},[488,908,555],{"class":494},[488,910,559],{"class":558},[488,912,562],{"class":502},[488,914,566],{"class":565},[488,916,569],{"class":498},[488,918,573],{"class":572},[488,920,576],{"class":498},[488,922,579],{"class":565},[488,924,582],{"class":498},[488,926,927,929,931,933,935,937,939],{"class":490,"line":585},[488,928,588],{"class":565},[488,930,591],{"class":502},[488,932,594],{"class":498},[488,934,597],{"class":558},[488,936,562],{"class":600},[488,938,573],{"class":502},[488,940,605],{"class":600},[488,942,943,945,947,949,951,953,955],{"class":490,"line":608},[488,944,588],{"class":565},[488,946,613],{"class":502},[488,948,594],{"class":498},[488,950,528],{"class":558},[488,952,562],{"class":600},[488,954,622],{"class":502},[488,956,605],{"class":600},[488,958,959],{"class":490,"line":627},[488,960,546],{"emptyLinePlaceholder":545},[488,962,963,965,967,969,971,973,975],{"class":490,"line":653},[488,964,588],{"class":565},[488,966,718],{"class":502},[488,968,594],{"class":498},[488,970,641],{"class":494},[488,972,870],{"class":558},[488,974,562],{"class":600},[488,976,727],{"class":498},[488,978,979,981,983,985,987,989,991,993,995,997,999],{"class":490,"line":658},[488,980,733],{"class":600},[488,982,678],{"class":498},[488,984,613],{"class":502},[488,986,664],{"class":498},[488,988,742],{"class":558},[488,990,562],{"class":600},[488,992,686],{"class":498},[488,994,749],{"class":515},[488,996,686],{"class":498},[488,998,576],{"class":600},[488,1000,756],{"class":498},[488,1002,1003,1006,1008,1010,1013,1015],{"class":490,"line":708},[488,1004,1005],{"class":600},"    prompt",[488,1007,678],{"class":498},[488,1009,512],{"class":498},[488,1011,1012],{"class":515},"Summarize this document",[488,1014,686],{"class":498},[488,1016,756],{"class":498},[488,1018,1019,1021],{"class":490,"line":713},[488,1020,810],{"class":498},[488,1022,605],{"class":600},[488,1024,1025],{"class":490,"line":730},[488,1026,546],{"emptyLinePlaceholder":545},[488,1028,1029,1031,1033,1035,1037,1039,1041,1043],{"class":490,"line":759},[488,1030,823],{"class":494},[488,1032,499],{"class":498},[488,1034,778],{"class":600},[488,1036,678],{"class":498},[488,1038,718],{"class":502},[488,1040,664],{"class":498},[488,1042,796],{"class":502},[488,1044,1045],{"class":498}," }\n",[488,1047,1048,1050],{"class":490,"line":767},[488,1049,839],{"class":498},[488,1051,605],{"class":502},[470,1053,1055],{"id":1054},"multi-step-agents","Multi-step Agents",[446,1057,1058],{},"The middleware fires for each step automatically. Steps, tool calls, and tokens are accumulated across the agent loop:",[478,1060,1063],{"className":480,"code":1061,"filename":1062,"language":483,"meta":484,"style":484},"import { ToolLoopAgent, createAgentUIStreamResponse, stepCountIs } from 'ai'\nimport { useLogger } from 'evlog'\nimport { createAILogger } from 'evlog\u002Fai'\n\nexport default defineEventHandler(async (event) => {\n  const log = useLogger(event)\n  const { messages } = await readBody(event)\n  const ai = createAILogger(log, {\n    toolInputs: { maxLength: 500 },\n  })\n\n  const agent = new ToolLoopAgent({\n    model: ai.wrap('anthropic\u002Fclaude-sonnet-4.6'),\n    tools: { searchWeb, queryDatabase },\n    stopWhen: stepCountIs(5),\n  })\n\n  return createAgentUIStreamResponse({\n    agent,\n    uiMessages: messages,\n  })\n})\n","server\u002Fapi\u002Fagent.post.ts",[450,1064,1065,1094,1113,1131,1135,1157,1173,1195,1213,1234,1240,1244,1262,1286,1305,1323,1329,1333,1343,1350,1361,1368],{"__ignoreMap":484},[488,1066,1067,1069,1071,1074,1076,1079,1081,1084,1086,1088,1090,1092],{"class":490,"line":491},[488,1068,495],{"class":494},[488,1070,499],{"class":498},[488,1072,1073],{"class":502}," ToolLoopAgent",[488,1075,689],{"class":498},[488,1077,1078],{"class":502}," createAgentUIStreamResponse",[488,1080,689],{"class":498},[488,1082,1083],{"class":502}," 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Use ",[450,2021,2022],{},"captureEmbed"," instead:",[478,2025,2028],{"className":480,"code":2026,"filename":2027,"language":483,"meta":484,"style":484},"import { embed, generateText } from 'ai'\nimport { useLogger } from 'evlog'\nimport { createAILogger } from 'evlog\u002Fai'\n\nexport default defineEventHandler(async (event) => {\n  const log = useLogger(event)\n  const ai = createAILogger(log)\n\n  const { embedding, usage } = await embed({\n    model: openai.embedding('text-embedding-3-small'),\n    value: query,\n  })\n  ai.captureEmbed({\n    usage,\n    model: 'text-embedding-3-small',\n    dimensions: 1536,\n  })\n\n  const docs = await findSimilar(embedding)\n\n  const result = await generateText({\n    model: ai.wrap('anthropic\u002Fclaude-sonnet-4.6'),\n    prompt: buildPrompt(docs),\n  })\n\n  return { text: result.text 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When more than one model is used, the wide event includes both ",[450,2531,1443],{}," (last model) and ",[450,2534,2535],{},"models"," (all unique models):",[2538,2539,2540,2694],"code-group",{},[478,2541,2543],{"className":480,"code":2542,"filename":482,"language":483,"meta":484,"style":484},"const ai = createAILogger(log)\n\nconst fast = ai.wrap('anthropic\u002Fclaude-haiku-4.5')\nconst smart = ai.wrap('anthropic\u002Fclaude-sonnet-4.6')\n\nconst classification = await generateText({ model: fast, prompt: classifyPrompt })\nconst response = await generateText({ model: smart, prompt: detailedPrompt })\n",[450,2544,2545,2560,2564,2590,2615,2619,2657],{"__ignoreMap":484},[488,2546,2547,2549,2552,2555,2557],{"class":490,"line":491},[488,2548,2411],{"class":565},[488,2550,2551],{"class":502}," ai 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