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model",[559,806,749],{"class":569},[559,808,684],{"class":573},[559,810,735],{"class":569},[559,812,813],{"class":629},"wrap",[559,815,633],{"class":671},[559,817,757],{"class":569},[559,819,820],{"class":586},"anthropic\u002Fclaude-sonnet-4.6",[559,822,757],{"class":569},[559,824,647],{"class":671},[559,826,827],{"class":569},",\n",[559,829,831,834],{"class":561,"line":830},13,[559,832,833],{"class":573},"    messages",[559,835,827],{"class":569},[559,837,839,842,844,847,850,853,855],{"class":561,"line":838},14,[559,840,841],{"class":629},"    onFinish",[559,843,749],{"class":569},[559,845,846],{"class":569}," ({",[559,848,849],{"class":643}," text",[559,851,852],{"class":569}," })",[559,854,650],{"class":636},[559,856,653],{"class":569},[559,858,860,863,865,868],{"class":561,"line":859},15,[559,861,862],{"class":629},"      saveConversation",[559,864,633],{"class":671},[559,866,867],{"class":573},"text",[559,869,676],{"class":671},[559,871,873],{"class":561,"line":872},16,[559,874,875],{"class":569},"    },\n",[559,877,879,882],{"class":561,"line":878},17,[559,880,881],{"class":569},"  }",[559,883,676],{"class":671},[559,885,887],{"class":561,"line":886},18,[559,888,617],{"emptyLinePlaceholder":616},[559,890,892,895,897,899,902],{"class":561,"line":891},19,[559,893,894],{"class":565},"  return",[559,896,789],{"class":573},[559,898,735],{"class":569},[559,900,901],{"class":629},"toTextStreamResponse",[559,903,904],{"class":671},"()\n",[559,906,908,911],{"class":561,"line":907},20,[559,909,910],{"class":569},"}",[559,912,676],{"class":573},[517,914,915,916,919],{},"The middleware never touches your ",[521,917,918],{},"onFinish"," callback — your code runs as usual.",[541,921,923],{"id":922},"generatetext","generateText",[517,925,926],{},"Synchronous generation. The middleware captures the result automatically:",[549,928,931],{"className":551,"code":929,"filename":930,"language":554,"meta":555,"style":555},"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",[521,932,933,952,970,974,996,1012,1028,1032,1048,1072,1088,1094,1098,1117],{"__ignoreMap":555},[559,934,935,937,939,942,944,946,948,950],{"class":561,"line":562},[559,936,566],{"class":565},[559,938,570],{"class":569},[559,940,941],{"class":573}," generateText",[559,943,577],{"class":569},[559,945,580],{"class":565},[559,947,583],{"class":569},[559,949,538],{"class":586},[559,951,589],{"class":569},[559,953,954,956,958,960,962,964,966,968],{"class":561,"line":592},[559,955,566],{"class":565},[559,957,570],{"class":569},[559,959,599],{"class":573},[559,961,577],{"class":569},[559,963,580],{"class":565},[559,965,583],{"class":569},[559,967,608],{"class":586},[559,969,589],{"class":569},[559,971,972],{"class":561,"line":613},[559,973,617],{"emptyLinePlaceholder":616},[559,975,976,978,980,982,984,986,988,990,992,994],{"class":561,"line":620},[559,977,623],{"class":565},[559,979,626],{"class":565},[559,981,630],{"class":629},[559,983,633],{"class":573},[559,985,637],{"class":636},[559,987,640],{"class":569},[559,989,644],{"class":643},[559,991,647],{"class":569},[559,993,650],{"class":636},[559,995,653],{"class":569},[559,997,998,1000,1002,1004,1006,1008,1010],{"class":561,"line":656},[559,999,659],{"class":636},[559,1001,662],{"class":573},[559,1003,665],{"class":569},[559,1005,668],{"class":629},[559,1007,633],{"class":671},[559,1009,644],{"class":573},[559,1011,676],{"class":671},[559,1013,1014,1016,1018,1020,1022,1024,1026],{"class":561,"line":679},[559,1015,659],{"class":636},[559,1017,684],{"class":573},[559,1019,665],{"class":569},[559,1021,599],{"class":629},[559,1023,633],{"class":671},[559,1025,693],{"class":573},[559,1027,676],{"class":671},[559,1029,1030],{"class":561,"line":698},[559,1031,617],{"emptyLinePlaceholder":616},[559,1033,1034,1036,1038,1040,1042,1044,1046],{"class":561,"line":724},[559,1035,659],{"class":636},[559,1037,789],{"class":573},[559,1039,665],{"class":569},[559,1041,712],{"class":565},[559,1043,941],{"class":629},[559,1045,633],{"class":671},[559,1047,798],{"class":569},[559,1049,1050,1052,1054,1056,1058,1060,1062,1064,1066,1068,1070],{"class":561,"line":729},[559,1051,804],{"class":671},[559,1053,749],{"class":569},[559,1055,684],{"class":573},[559,1057,735],{"class":569},[559,1059,813],{"class":629},[559,1061,633],{"class":671},[559,1063,757],{"class":569},[559,1065,820],{"class":586},[559,1067,757],{"class":569},[559,1069,647],{"class":671},[559,1071,827],{"class":569},[559,1073,1074,1077,1079,1081,1084,1086],{"class":561,"line":779},[559,1075,1076],{"class":671},"    prompt",[559,1078,749],{"class":569},[559,1080,583],{"class":569},[559,1082,1083],{"class":586},"Summarize this document",[559,1085,757],{"class":569},[559,1087,827],{"class":569},[559,1089,1090,1092],{"class":561,"line":784},[559,1091,881],{"class":569},[559,1093,676],{"class":671},[559,1095,1096],{"class":561,"line":801},[559,1097,617],{"emptyLinePlaceholder":616},[559,1099,1100,1102,1104,1106,1108,1110,1112,1114],{"class":561,"line":830},[559,1101,894],{"class":565},[559,1103,570],{"class":569},[559,1105,849],{"class":671},[559,1107,749],{"class":569},[559,1109,789],{"class":573},[559,1111,735],{"class":569},[559,1113,867],{"class":573},[559,1115,1116],{"class":569}," }\n",[559,1118,1119,1121],{"class":561,"line":838},[559,1120,910],{"class":569},[559,1122,676],{"class":573},[541,1124,1126],{"id":1125},"multi-step-agents","Multi-step Agents",[517,1128,1129],{},"The middleware fires for each step automatically. Steps, tool calls, and tokens are accumulated across the agent loop:",[549,1131,1134],{"className":551,"code":1132,"filename":1133,"language":554,"meta":555,"style":555},"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",[521,1135,1136,1165,1184,1202,1206,1228,1244,1266,1284,1305,1311,1315,1333,1357,1376,1394,1400,1404,1414,1421,1432,1439],{"__ignoreMap":555},[559,1137,1138,1140,1142,1145,1147,1150,1152,1155,1157,1159,1161,1163],{"class":561,"line":562},[559,1139,566],{"class":565},[559,1141,570],{"class":569},[559,1143,1144],{"class":573}," ToolLoopAgent",[559,1146,760],{"class":569},[559,1148,1149],{"class":573}," createAgentUIStreamResponse",[559,1151,760],{"class":569},[559,1153,1154],{"class":573}," 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uiMessages",[559,1427,749],{"class":569},[559,1429,705],{"class":573},[559,1431,827],{"class":569},[559,1433,1435,1437],{"class":561,"line":1434},21,[559,1436,881],{"class":569},[559,1438,676],{"class":671},[559,1440,1442,1444],{"class":561,"line":1441},22,[559,1443,910],{"class":569},[559,1445,676],{"class":573},[517,1447,1448],{},"Wide event after a 3-step agent run:",[549,1450,1455],{"className":1451,"code":1452,"filename":1453,"language":1454,"meta":555,"style":555},"language-json shiki shiki-themes material-theme-lighter material-theme material-theme-palenight","{\n  \"ai\": {\n    \"calls\": 3,\n    \"steps\": 3,\n    \"model\": \"claude-sonnet-4.6\",\n    \"provider\": \"anthropic\",\n    \"inputTokens\": 4500,\n    \"outputTokens\": 1200,\n    \"totalTokens\": 5700,\n    \"finishReason\": \"stop\",\n    \"toolCalls\": [\n      { \"name\": \"searchWeb\", \"input\": { \"query\": \"TypeScript 6.0 features\" } },\n      { \"name\": \"queryDatabase\", \"input\": { \"sql\": \"SELECT * FROM docs WHERE topic = 'typescript'\" } },\n      { \"name\": \"searchWeb\", \"input\": { \"query\": \"TypeScript 6.0 release date\" } }\n    ],\n    \"responseId\": \"msg_01XFDUDYJgAACzvnptvVoYEL\",\n    \"stepsUsage\": [\n      { \"model\": \"claude-sonnet-4.6\", \"inputTokens\": 1200, \"outputTokens\": 300, \"toolCalls\": [\"searchWeb\"] },\n      { \"model\": \"claude-sonnet-4.6\", \"inputTokens\": 1500, \"outputTokens\": 400, \"toolCalls\": [\"queryDatabase\", \"searchWeb\"] },\n      { \"model\": \"claude-sonnet-4.6\", \"inputTokens\": 1800, \"outputTokens\": 500 }\n    ],\n    \"msToFirstChunk\": 312,\n    \"msToFinish\": 8200,\n    \"tokensPerSecond\": 146\n  }\n}\n","Wide 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buildPrompt",[559,2423,633],{"class":671},[559,2425,2426],{"class":573},"docs",[559,2428,647],{"class":671},[559,2430,827],{"class":569},[559,2432,2433,2435],{"class":561,"line":2048},[559,2434,881],{"class":569},[559,2436,676],{"class":671},[559,2438,2439],{"class":561,"line":2063},[559,2440,617],{"emptyLinePlaceholder":616},[559,2442,2443,2445,2447,2449,2451,2453,2455,2457],{"class":561,"line":2069},[559,2444,894],{"class":565},[559,2446,570],{"class":569},[559,2448,849],{"class":671},[559,2450,749],{"class":569},[559,2452,789],{"class":573},[559,2454,735],{"class":569},[559,2456,867],{"class":573},[559,2458,1116],{"class":569},[559,2460,2462,2464],{"class":561,"line":2461},27,[559,2463,910],{"class":569},[559,2465,676],{"class":573},[517,2467,2468,2469,2472],{},"For ",[521,2470,2471],{},"embedMany",", pass the batch count:",[549,2474,2476],{"className":551,"code":2475,"language":554,"meta":555,"style":555},"const { embeddings, usage } = await embedMany({\n  model: openai.embedding('text-embedding-3-small'),\n  values: documents,\n})\nai.captureEmbed({ usage, model: 'text-embedding-3-small', count: documents.length })\n",[521,2477,2478,2506,2531,2543,2549],{"__ignoreMap":555},[559,2479,2480,2483,2485,2488,2490,2493,2495,2497,2499,2502,2504],{"class":561,"line":562},[559,2481,2482],{"class":636},"const",[559,2484,570],{"class":569},[559,2486,2487],{"class":573}," embeddings",[559,2489,760],{"class":569},[559,2491,2492],{"class":573}," usage ",[559,2494,910],{"class":569},[559,2496,665],{"class":569},[559,2498,712],{"class":565},[559,2500,2501],{"class":629}," embedMany",[559,2503,633],{"class":573},[559,2505,798],{"class":569},[559,2507,2508,2511,2513,2515,2517,2519,2521,2523,2525,2527,2529],{"class":561,"line":592},[559,2509,2510],{"class":671},"  model",[559,2512,749],{"class":569},[559,2514,2256],{"class":573},[559,2516,735],{"class":569},[559,2518,2261],{"class":629},[559,2520,633],{"class":573},[559,2522,757],{"class":569},[559,2524,2268],{"class":586},[559,2526,757],{"class":569},[559,2528,647],{"class":573},[559,2530,827],{"class":569},[559,2532,2533,2536,2538,2541],{"class":561,"line":613},[559,2534,2535],{"class":671},"  values",[559,2537,749],{"class":569},[559,2539,2540],{"class":573}," documents",[559,2542,827],{"class":569},[559,2544,2545,2547],{"class":561,"line":620},[559,2546,910],{"class":569},[559,2548,676],{"class":573},[559,2550,2551,2553,2555,2557,2559,2561,2563,2565,2568,2570,2572,2574,2576,2578,2581,2583,2585,2587,2590,2592],{"class":561,"line":656},[559,2552,538],{"class":573},[559,2554,735],{"class":569},[559,2556,2093],{"class":629},[559,2558,633],{"class":573},[559,2560,743],{"class":569},[559,2562,2235],{"class":573},[559,2564,760],{"class":569},[559,2566,2567],{"class":671}," model",[559,2569,749],{"class":569},[559,2571,583],{"class":569},[559,2573,2268],{"class":586},[559,2575,757],{"class":569},[559,2577,760],{"class":569},[559,2579,2580],{"class":671}," count",[559,2582,749],{"class":569},[559,2584,2540],{"class":573},[559,2586,735],{"class":569},[559,2588,2589],{"class":573},"length ",[559,2591,910],{"class":569},[559,2593,676],{"class":573},[541,2595,2597],{"id":2596},"multiple-models","Multiple Models",[517,2599,2600,2601,2603,2604,2607],{},"Wrap each model separately — they share the same accumulator. When more than one model is used, the wide event includes both ",[521,2602,1514],{}," (last model) and ",[521,2605,2606],{},"models"," (all unique models):",[2609,2610,2611,2765],"code-group",{},[549,2612,2614],{"className":551,"code":2613,"filename":553,"language":554,"meta":555,"style":555},"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",[521,2615,2616,2631,2635,2661,2686,2690,2728],{"__ignoreMap":555},[559,2617,2618,2620,2623,2626,2628],{"class":561,"line":562},[559,2619,2482],{"class":636},[559,2621,2622],{"class":573}," ai ",[559,2624,2625],{"class":569},"=",[559,2627,599],{"class":629},[559,2629,2630],{"class":573},"(log)\n",[559,2632,2633],{"class":561,"line":592},[559,2634,617],{"emptyLinePlaceholder":616},[559,2636,2637,2639,2642,2644,2646,2648,2650,2652,2654,2657,2659],{"class":561,"line":613},[559,2638,2482],{"class":636},[559,2640,2641],{"class":573}," fast ",[559,2643,2625],{"class":569},[559,2645,684],{"class":573},[559,2647,735],{"class":569},[559,2649,813],{"class":629},[559,2651,633],{"class":573},[559,2653,757],{"class":569},[559,2655,2656],{"class":586},"anthropic\u002Fclaude-haiku-4.5",[559,2658,757],{"class":569},[559,2660,676],{"class":573},[559,2662,2663,2665,2668,2670,2672,2674,2676,2678,2680,2682,2684],{"class":561,"line":620},[559,2664,2482],{"class":636},[559,2666,2667],{"class":573}," smart ",[559,2669,2625],{"class":569},[559,2671,684],{"class":573},[559,2673,735],{"class":569},[559,2675,813],{"class":629},[559,2677,633],{"class":573},[559,2679,757],{"class":569},[559,2681,820],{"class":586},[559,2683,757],{"class":569},[559,2685,676],{"class":573},[559,2687,2688],{"class":561,"line":656},[559,2689,617],{"emptyLinePlaceholder":616},[559,2691,2692,2694,2697,2699,2701,2703,2705,2707,2709,2711,2714,2716,2719,2721,2724,2726],{"class":561,"line":679},[559,2693,2482],{"class":636},[559,2695,2696],{"class":573}," classification ",[559,2698,2625],{"class":569},[559,2700,712],{"class":565},[559,2702,941],{"class":629},[559,2704,633],{"class":573},[559,2706,743],{"class":569},[559,2708,2567],{"class":671},[559,2710,749],{"class":569},[559,2712,2713],{"class":573}," fast",[559,2715,760],{"class":569},[559,2717,2718],{"class":671}," prompt",[559,2720,749],{"class":569},[559,2722,2723],{"class":573}," classifyPrompt ",[559,2725,910],{"class":569},[559,2727,676],{"class":573},[559,2729,2730,2732,2735,2737,2739,2741,2743,2745,2747,2749,2752,2754,2756,2758,2761,2763],{"class":561,"line":698},[559,2731,2482],{"class":636},[559,2733,2734],{"class":573}," response ",[559,2736,2625],{"class":569},[559,2738,712],{"class":565},[559,2740,941],{"class":629},[559,2742,633],{"class":573},[559,2744,743],{"class":569},[559,2746,2567],{"class":671},[559,2748,749],{"class":569},[559,2750,2751],{"class":573}," smart",[559,2753,760],{"class":569},[559,2755,2718],{"class":671},[559,2757,749],{"class":569},[559,2759,2760],{"class":573}," detailedPrompt ",[559,2762,910],{"class":569},[559,2764,676],{"class":573},[549,2766,2768],{"className":1451,"code":2767,"filename":1453,"language":1454,"meta":555,"style":555},"{\n  \"ai\": {\n    \"calls\": 2,\n    \"model\": \"claude-sonnet-4.6\",\n    \"models\": [\"claude-haiku-4.5\", \"claude-sonnet-4.6\"],\n    \"provider\": \"anthropic\",\n    \"inputTokens\": 450,\n    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Wrap your model and get full AI observability with one line.",{"title":321,"path":322,"stem":323,"description":3021,"icon":324,"children":-1},"Configure tool input capture (with redaction and truncation), enable cost estimation per model, and handle errors during AI calls.",1785604596745]