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{\n",[564,660,662,665,668,671,674,677,679],{"class":566,"line":661},5,[564,663,664],{"class":641},"  const",[564,666,667],{"class":578}," log",[564,669,670],{"class":574}," =",[564,672,673],{"class":634}," useLogger",[564,675,638],{"class":676},"swJcz",[564,678,649],{"class":578},[564,680,681],{"class":676},")\n",[564,683,685,687,690,692,694,696,699],{"class":566,"line":684},6,[564,686,664],{"class":641},[564,688,689],{"class":578}," ai",[564,691,670],{"class":574},[564,693,604],{"class":634},[564,695,638],{"class":676},[564,697,698],{"class":578},"log",[564,700,681],{"class":676},[564,702,704,706,708,711,713,715,718,721,723,725],{"class":566,"line":703},7,[564,705,664],{"class":641},[564,707,575],{"class":574},[564,709,710],{"class":578}," messages",[564,712,582],{"class":574},[564,714,670],{"class":574},[564,716,717],{"class":570}," await",[564,719,720],{"class":634}," 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messagesCount",[564,770,754],{"class":574},[564,772,710],{"class":578},[564,774,740],{"class":574},[564,776,777],{"class":578},"length",[564,779,582],{"class":574},[564,781,681],{"class":676},[564,783,785],{"class":566,"line":784},10,[564,786,622],{"emptyLinePlaceholder":621},[564,788,790,792,795,797,799,801],{"class":566,"line":789},11,[564,791,664],{"class":641},[564,793,794],{"class":578}," result",[564,796,670],{"class":574},[564,798,579],{"class":634},[564,800,638],{"class":676},[564,802,803],{"class":574},"{\n",[564,805,807,810,812,814,816,819,821,823,826,828,830],{"class":566,"line":806},12,[564,808,809],{"class":676},"    model",[564,811,754],{"class":574},[564,813,689],{"class":578},[564,815,740],{"class":574},[564,817,818],{"class":634},"wrap",[564,820,638],{"class":676},[564,822,762],{"class":574},[564,824,825],{"class":591},"anthropic\u002Fclaude-sonnet-4.6",[564,827,762],{"class":574},[564,829,652],{"class":676},[564,831,832],{"class":574},",\n",[564,834,836,839],{"class":566,"line":835},13,[564,837,838],{"class":578},"    messages",[564,840,832],{"class":574},[564,842,844,847,849,852,855,858,860],{"class":566,"line":843},14,[564,845,846],{"class":634},"    onFinish",[564,848,754],{"class":574},[564,850,851],{"class":574}," ({",[564,853,854],{"class":648}," text",[564,856,857],{"class":574}," })",[564,859,655],{"class":641},[564,861,658],{"class":574},[564,863,865,868,870,873],{"class":566,"line":864},15,[564,866,867],{"class":634},"      saveConversation",[564,869,638],{"class":676},[564,871,872],{"class":578},"text",[564,874,681],{"class":676},[564,876,878],{"class":566,"line":877},16,[564,879,880],{"class":574},"    },\n",[564,882,884,887],{"class":566,"line":883},17,[564,885,886],{"class":574},"  }",[564,888,681],{"class":676},[564,890,892],{"class":566,"line":891},18,[564,893,622],{"emptyLinePlaceholder":621},[564,895,897,900,902,904,907],{"class":566,"line":896},19,[564,898,899],{"class":570},"  return",[564,901,794],{"class":578},[564,903,740],{"class":574},[564,905,906],{"class":634},"toTextStreamResponse",[564,908,909],{"class":676},"()\n",[564,911,913,916],{"class":566,"line":912},20,[564,914,915],{"class":574},"}",[564,917,681],{"class":578},[522,919,920,921,924],{},"The middleware never touches your ",[526,922,923],{},"onFinish"," callback — your code runs as usual.",[546,926,928],{"id":927},"generatetext","generateText",[522,930,931],{},"Synchronous generation. The middleware captures the result automatically:",[554,933,936],{"className":556,"code":934,"filename":935,"language":559,"meta":560,"style":560},"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",[526,937,938,957,975,979,1001,1017,1033,1037,1053,1077,1093,1099,1103,1122],{"__ignoreMap":560},[564,939,940,942,944,947,949,951,953,955],{"class":566,"line":567},[564,941,571],{"class":570},[564,943,575],{"class":574},[564,945,946],{"class":578}," generateText",[564,948,582],{"class":574},[564,950,585],{"class":570},[564,952,588],{"class":574},[564,954,543],{"class":591},[564,956,594],{"class":574},[564,958,959,961,963,965,967,969,971,973],{"class":566,"line":597},[564,960,571],{"class":570},[564,962,575],{"class":574},[564,964,604],{"class":578},[564,966,582],{"class":574},[564,968,585],{"class":570},[564,970,588],{"class":574},[564,972,613],{"class":591},[564,974,594],{"class":574},[564,976,977],{"class":566,"line":618},[564,978,622],{"emptyLinePlaceholder":621},[564,980,981,983,985,987,989,991,993,995,997,999],{"class":566,"line":625},[564,982,628],{"class":570},[564,984,631],{"class":570},[564,986,635],{"class":634},[564,988,638],{"class":578},[564,990,642],{"class":641},[564,992,645],{"class":574},[564,994,649],{"class":648},[564,996,652],{"class":574},[564,998,655],{"class":641},[564,1000,658],{"class":574},[564,1002,1003,1005,1007,1009,1011,1013,1015],{"class":566,"line":661},[564,1004,664],{"class":641},[564,1006,667],{"class":578},[564,1008,670],{"class":574},[564,1010,673],{"class":634},[564,1012,638],{"class":676},[564,1014,649],{"class":578},[564,1016,681],{"class":676},[564,1018,1019,1021,1023,1025,1027,1029,1031],{"class":566,"line":684},[564,1020,664],{"class":641},[564,1022,689],{"class":578},[564,1024,670],{"class":574},[564,1026,604],{"class":634},[564,1028,638],{"class":676},[564,1030,698],{"class":578},[564,1032,681],{"class":676},[564,1034,1035],{"class":566,"line":703},[564,1036,622],{"emptyLinePlaceholder":621},[564,1038,1039,1041,1043,1045,1047,1049,1051],{"class":566,"line":729},[564,1040,664],{"class":641},[564,1042,794],{"class":578},[564,1044,670],{"class":574},[564,1046,717],{"class":570},[564,1048,946],{"class":634},[564,1050,638],{"class":676},[564,1052,803],{"class":574},[564,1054,1055,1057,1059,1061,1063,1065,1067,1069,1071,1073,1075],{"class":566,"line":734},[564,1056,809],{"class":676},[564,1058,754],{"class":574},[564,1060,689],{"class":578},[564,1062,740],{"class":574},[564,1064,818],{"class":634},[564,1066,638],{"class":676},[564,1068,762],{"class":574},[564,1070,825],{"class":591},[564,1072,762],{"class":574},[564,1074,652],{"class":676},[564,1076,832],{"class":574},[564,1078,1079,1082,1084,1086,1089,1091],{"class":566,"line":784},[564,1080,1081],{"class":676},"    prompt",[564,1083,754],{"class":574},[564,1085,588],{"class":574},[564,1087,1088],{"class":591},"Summarize this document",[564,1090,762],{"class":574},[564,1092,832],{"class":574},[564,1094,1095,1097],{"class":566,"line":789},[564,1096,886],{"class":574},[564,1098,681],{"class":676},[564,1100,1101],{"class":566,"line":806},[564,1102,622],{"emptyLinePlaceholder":621},[564,1104,1105,1107,1109,1111,1113,1115,1117,1119],{"class":566,"line":835},[564,1106,899],{"class":570},[564,1108,575],{"class":574},[564,1110,854],{"class":676},[564,1112,754],{"class":574},[564,1114,794],{"class":578},[564,1116,740],{"class":574},[564,1118,872],{"class":578},[564,1120,1121],{"class":574}," }\n",[564,1123,1124,1126],{"class":566,"line":843},[564,1125,915],{"class":574},[564,1127,681],{"class":578},[546,1129,1131],{"id":1130},"multi-step-agents","Multi-step Agents",[522,1133,1134],{},"The middleware fires for each step automatically. Steps, tool calls, and tokens are accumulated across the agent loop:",[554,1136,1139],{"className":556,"code":1137,"filename":1138,"language":559,"meta":560,"style":560},"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",[526,1140,1141,1170,1189,1207,1211,1233,1249,1271,1289,1310,1316,1320,1338,1362,1381,1399,1405,1409,1419,1426,1437,1444],{"__ignoreMap":560},[564,1142,1143,1145,1147,1150,1152,1155,1157,1160,1162,1164,1166,1168],{"class":566,"line":567},[564,1144,571],{"class":570},[564,1146,575],{"class":574},[564,1148,1149],{"class":578}," ToolLoopAgent",[564,1151,765],{"class":574},[564,1153,1154],{"class":578}," createAgentUIStreamResponse",[564,1156,765],{"class":574},[564,1158,1159],{"class":578}," stepCountIs",[564,1161,582],{"class":574},[564,1163,585],{"class":570},[564,1165,588],{"class":574},[564,1167,543],{"class":591},[564,1169,594],{"class":574},[564,1171,1172,1174,1176,1178,1180,1182,1184,1187],{"class":566,"line":597},[564,1173,571],{"class":570},[564,1175,575],{"class":574},[564,1177,673],{"class":578},[564,1179,582],{"class":574},[564,1181,585],{"class":570},[564,1183,588],{"class":574},[564,1185,1186],{"class":591},"evlog",[564,1188,594],{"class":574},[564,1190,1191,1193,1195,1197,1199,1201,1203,1205],{"class":566,"line":618},[564,1192,571],{"class":570},[564,1194,575],{"class":574},[564,1196,604],{"class":578},[564,1198,582],{"class":574},[564,1200,585],{"class":570},[564,1202,588],{"class":574},[564,1204,613],{"class":591},[564,1206,594],{"class":574},[564,1208,1209],{"class":566,"line":625},[564,1210,622],{"emptyLinePlaceholder":621},[564,1212,1213,1215,1217,1219,1221,1223,1225,1227,1229,1231],{"class":566,"line":661},[564,1214,628],{"class":570},[564,1216,631],{"class":570},[564,1218,635],{"class":634},[564,1220,638],{"class":578},[564,1222,642],{"class":641},[564,1224,645],{"class":574},[564,1226,649],{"class":648},[564,1228,652],{"class":574},[564,1230,655],{"class":641},[564,1232,658],{"class":574},[564,1234,1235,1237,1239,1241,1243,1245,1247],{"class":566,"line":684},[564,1236,664],{"class":641},[564,1238,667],{"class":578},[564,1240,670],{"class":574},[564,1242,673],{"class":634},[564,1244,638],{"class":676},[564,1246,649],{"class":578},[564,1248,681],{"class":676},[564,1250,1251,1253,1255,1257,1259,1261,1263,1265,1267,1269],{"class":566,"line":703},[564,1252,664],{"class":641},[564,1254,575],{"class":574},[564,1256,710],{"class":578},[564,1258,582],{"class":574},[564,1260,670],{"class":574},[564,1262,717],{"class":570},[564,1264,720],{"class":634},[564,1266,638],{"class":676},[564,1268,649],{"class":578},[564,1270,681],{"class":676},[564,1272,1273,1275,1277,1279,1281,1283,1285,1287],{"class":566,"line":729},[564,1274,664],{"class":641},[564,1276,689],{"class":578},[564,1278,670],{"class":574},[564,1280,604],{"class":634},[564,1282,638],{"class":676},[564,1284,698],{"class":578},[564,1286,765],{"class":574},[564,1288,658],{"class":574},[564,1290,1291,1294,1296,1298,1301,1303,1307],{"class":566,"line":734},[564,1292,1293],{"class":676}," 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stopWhen",[564,1387,754],{"class":574},[564,1389,1159],{"class":634},[564,1391,638],{"class":676},[564,1393,1394],{"class":1305},"5",[564,1396,652],{"class":676},[564,1398,832],{"class":574},[564,1400,1401,1403],{"class":566,"line":877},[564,1402,886],{"class":574},[564,1404,681],{"class":676},[564,1406,1407],{"class":566,"line":883},[564,1408,622],{"emptyLinePlaceholder":621},[564,1410,1411,1413,1415,1417],{"class":566,"line":891},[564,1412,899],{"class":570},[564,1414,1154],{"class":634},[564,1416,638],{"class":676},[564,1418,803],{"class":574},[564,1420,1421,1424],{"class":566,"line":896},[564,1422,1423],{"class":578},"    agent",[564,1425,832],{"class":574},[564,1427,1428,1431,1433,1435],{"class":566,"line":912},[564,1429,1430],{"class":676},"    uiMessages",[564,1432,754],{"class":574},[564,1434,710],{"class":578},[564,1436,832],{"class":574},[564,1438,1440,1442],{"class":566,"line":1439},21,[564,1441,886],{"class":574},[564,1443,681],{"class":676},[564,1445,1447,1449],{"class":566,"line":1446},22,[564,1448,915],{"class":574},[564,1450,681],{"class":578},[522,1452,1453],{},"Wide event after a 3-step agent run:",[554,1455,1460],{"className":1456,"code":1457,"filename":1458,"language":1459,"meta":560,"style":560},"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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openai.embedding('text-embedding-3-small'),\n  values: documents,\n})\nai.captureEmbed({ usage, model: 'text-embedding-3-small', count: documents.length })\n",[526,2482,2483,2511,2536,2548,2554],{"__ignoreMap":560},[564,2484,2485,2488,2490,2493,2495,2498,2500,2502,2504,2507,2509],{"class":566,"line":567},[564,2486,2487],{"class":641},"const",[564,2489,575],{"class":574},[564,2491,2492],{"class":578}," embeddings",[564,2494,765],{"class":574},[564,2496,2497],{"class":578}," usage ",[564,2499,915],{"class":574},[564,2501,670],{"class":574},[564,2503,717],{"class":570},[564,2505,2506],{"class":634}," embedMany",[564,2508,638],{"class":578},[564,2510,803],{"class":574},[564,2512,2513,2516,2518,2520,2522,2524,2526,2528,2530,2532,2534],{"class":566,"line":597},[564,2514,2515],{"class":676},"  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