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Safe to call at any point, including after the run completes or inside the AI SDK's ",[558,587,588],{},"onFinish",":",[591,592,598],"pre",{"className":593,"code":594,"filename":595,"language":596,"meta":597,"style":597},"language-typescript shiki shiki-themes material-theme-lighter material-theme material-theme-palenight","import { useLogger } from 'evlog'\nimport { createAILogger } from 'evlog\u002Fai'\nimport { generateText } from 'ai'\n\nexport default defineEventHandler(async (event) => {\n  const log = useLogger(event)\n  const ai = createAILogger(log, {\n    cost: { 'claude-sonnet-4.6': { input: 3, output: 15 } },\n  })\n\n  await generateText({\n    model: ai.wrap('anthropic\u002Fclaude-sonnet-4.6'),\n    prompt: 'Summarize this document',\n  })\n\n  const metadata = ai.getMetadata()\n\n  await db.aiRuns.insert({\n    userId: event.context.userId,\n    model: metadata.model,\n    inputTokens: metadata.inputTokens,\n    outputTokens: metadata.outputTokens,\n    estimatedCost: metadata.estimatedCost,\n    finishReason: metadata.finishReason,\n    responseId: metadata.responseId,\n  })\n\n  return { ok: true }\n})\n","server\u002Fapi\u002Fchat.post.ts","typescript","",[558,599,600,633,654,674,681,717,739,761,807,815,820,833,863,880,887,892,912,917,939,962,978,995,1012,1029,1046,1063,1070,1075,1095],{"__ignoreMap":597},[601,602,605,609,613,617,620,623,626,630],"span",{"class":603,"line":604},"line",1,[601,606,608],{"class":607},"s7zQu","import",[601,610,612],{"class":611},"sMK4o"," {",[601,614,616],{"class":615},"sTEyZ"," useLogger",[601,618,619],{"class":611}," }",[601,621,622],{"class":607}," from",[601,624,625],{"class":611}," '",[601,627,629],{"class":628},"sfazB","evlog",[601,631,632],{"class":611},"'\n",[601,634,636,638,640,643,645,647,649,652],{"class":603,"line":635},2,[601,637,608],{"class":607},[601,639,612],{"class":611},[601,641,642],{"class":615}," 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=>",[601,715,716],{"class":611}," {\n",[601,718,720,723,726,729,731,734,736],{"class":603,"line":719},6,[601,721,722],{"class":699},"  const",[601,724,725],{"class":615}," log",[601,727,728],{"class":611}," =",[601,730,616],{"class":692},[601,732,696],{"class":733},"swJcz",[601,735,707],{"class":615},[601,737,738],{"class":733},")\n",[601,740,742,744,747,749,751,753,756,759],{"class":603,"line":741},7,[601,743,722],{"class":699},[601,745,746],{"class":615}," ai",[601,748,728],{"class":611},[601,750,642],{"class":692},[601,752,696],{"class":733},[601,754,755],{"class":615},"log",[601,757,758],{"class":611},",",[601,760,716],{"class":611},[601,762,764,767,769,771,773,776,779,781,783,786,788,792,794,797,799,802,804],{"class":603,"line":763},8,[601,765,766],{"class":733},"    cost",[601,768,589],{"class":611},[601,770,612],{"class":611},[601,772,625],{"class":611},[601,774,775],{"class":733},"claude-sonnet-4.6",[601,777,778],{"class":611},"'",[601,780,589],{"class":611},[601,782,612],{"class":611},[601,784,785],{"class":733}," input",[601,787,589],{"class":611},[601,789,791],{"class":790},"sbssI"," 3",[601,793,758],{"class":611},[601,795,796],{"class":733}," output",[601,798,589],{"class":611},[601,800,801],{"class":790}," 15",[601,803,619],{"class":611},[601,805,806],{"class":611}," },\n",[601,808,810,813],{"class":603,"line":809},9,[601,811,812],{"class":611},"  }",[601,814,738],{"class":733},[601,816,818],{"class":603,"line":817},10,[601,819,680],{"emptyLinePlaceholder":679},[601,821,823,826,828,830],{"class":603,"line":822},11,[601,824,825],{"class":607},"  await",[601,827,663],{"class":692},[601,829,696],{"class":733},[601,831,832],{"class":611},"{\n",[601,834,836,839,841,843,846,849,851,853,856,858,860],{"class":603,"line":835},12,[601,837,838],{"class":733},"    model",[601,840,589],{"class":611},[601,842,746],{"class":615},[601,844,845],{"class":611},".",[601,847,848],{"class":692},"wrap",[601,850,696],{"class":733},[601,852,778],{"class":611},[601,854,855],{"class":628},"anthropic\u002Fclaude-sonnet-4.6",[601,857,778],{"class":611},[601,859,710],{"class":733},[601,861,862],{"class":611},",\n",[601,864,866,869,871,873,876,878],{"class":603,"line":865},13,[601,867,868],{"class":733},"    prompt",[601,870,589],{"class":611},[601,872,625],{"class":611},[601,874,875],{"class":628},"Summarize this 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db",[601,926,845],{"class":611},[601,928,929],{"class":615},"aiRuns",[601,931,845],{"class":611},[601,933,934],{"class":692},"insert",[601,936,696],{"class":733},[601,938,832],{"class":611},[601,940,942,945,947,950,952,955,957,960],{"class":603,"line":941},19,[601,943,944],{"class":733},"    userId",[601,946,589],{"class":611},[601,948,949],{"class":615}," event",[601,951,845],{"class":611},[601,953,954],{"class":615},"context",[601,956,845],{"class":611},[601,958,959],{"class":615},"userId",[601,961,862],{"class":611},[601,963,965,967,969,971,973,976],{"class":603,"line":964},20,[601,966,838],{"class":733},[601,968,589],{"class":611},[601,970,899],{"class":615},[601,972,845],{"class":611},[601,974,975],{"class":615},"model",[601,977,862],{"class":611},[601,979,981,984,986,988,990,993],{"class":603,"line":980},21,[601,982,983],{"class":733},"    inputTokens",[601,985,589],{"class":611},[601,987,899],{"class":615},[601,989,845],{"class":611},[601,991,992],{"class":615},"inputTokens",[601,994,862],{"class":611},[601,996,998,1001,1003,1005,1007,1010],{"class":603,"line":997},22,[601,999,1000],{"class":733},"    outputTokens",[601,1002,589],{"class":611},[601,1004,899],{"class":615},[601,1006,845],{"class":611},[601,1008,1009],{"class":615},"outputTokens",[601,1011,862],{"class":611},[601,1013,1015,1018,1020,1022,1024,1027],{"class":603,"line":1014},23,[601,1016,1017],{"class":733},"    estimatedCost",[601,1019,589],{"class":611},[601,1021,899],{"class":615},[601,1023,845],{"class":611},[601,1025,1026],{"class":615},"estimatedCost",[601,1028,862],{"class":611},[601,1030,1032,1035,1037,1039,1041,1044],{"class":603,"line":1031},24,[601,1033,1034],{"class":733},"    finishReason",[601,1036,589],{"class":611},[601,1038,899],{"class":615},[601,1040,845],{"class":611},[601,1042,1043],{"class":615},"finishReason",[601,1045,862],{"class":611},[601,1047,1049,1052,1054,1056,1058,1061],{"class":603,"line":1048},25,[601,1050,1051],{"class":733},"    responseId",[601,1053,589],{"class":611},[601,1055,899],{"class":615},[601,1057,845],{"class":611},[601,1059,1060],{"class":615},"responseId",[601,1062,862],{"class":611},[601,1064,1066,1068],{"class":603,"line":1065},26,[601,1067,812],{"class":611},[601,1069,738],{"class":733},[601,1071,1073],{"class":603,"line":1072},27,[601,1074,680],{"emptyLinePlaceholder":679},[601,1076,1078,1081,1083,1086,1088,1092],{"class":603,"line":1077},28,[601,1079,1080],{"class":607},"  return",[601,1082,612],{"class":611},[601,1084,1085],{"class":733}," ok",[601,1087,589],{"class":611},[601,1089,1091],{"class":1090},"sfNiH"," true",[601,1093,1094],{"class":611}," }\n",[601,1096,1098,1101],{"class":603,"line":1097},29,[601,1099,1100],{"class":611},"}",[601,1102,738],{"class":615},[554,1104,1105],{},"The snapshot is a fresh copy: mutating it never affects the underlying state or subsequent calls.",[569,1107,1109,1112],{"id":1108},"getestimatedcost-quick-cost-check",[558,1110,1111],{},"getEstimatedCost()"," — quick cost check",[554,1114,1115,1116,1119,1120,1123,1124,1127],{},"Convenience for ",[558,1117,1118],{},"getMetadata().estimatedCost",". Returns the cost in dollars, or ",[558,1121,1122],{},"undefined"," if no ",[558,1125,1126],{},"cost"," map was provided or the model is not in the map.",[591,1129,1131],{"className":593,"code":1130,"language":596,"meta":597,"style":597},"const ai = createAILogger(log, {\n  cost: { 'claude-sonnet-4.6': { input: 3, output: 15 } },\n})\n\nawait generateText({ model: ai.wrap('anthropic\u002Fclaude-sonnet-4.6'), prompt })\n\nconst cost = ai.getEstimatedCost()\nconsole.log(`This call cost $${cost?.toFixed(4)}`)\n",[558,1132,1133,1153,1190,1196,1200,1242,1246,1264],{"__ignoreMap":597},[601,1134,1135,1138,1141,1144,1146,1149,1151],{"class":603,"line":604},[601,1136,1137],{"class":699},"const",[601,1139,1140],{"class":615}," ai ",[601,1142,1143],{"class":611},"=",[601,1145,642],{"class":692},[601,1147,1148],{"class":615},"(log",[601,1150,758],{"class":611},[601,1152,716],{"class":611},[601,1154,1155,1158,1160,1162,1164,1166,1168,1170,1172,1174,1176,1178,1180,1182,1184,1186,1188],{"class":603,"line":635},[601,1156,1157],{"class":733},"  cost",[601,1159,589],{"class":611},[601,1161,612],{"class":611},[601,1163,625],{"class":611},[601,1165,775],{"class":733},[601,1167,778],{"class":611},[601,1169,589],{"class":611},[601,1171,612],{"class":611},[601,1173,785],{"class":733},[601,1175,589],{"class":611},[601,1177,791],{"class":790},[601,1179,758],{"class":611},[601,1181,796],{"class":733},[601,1183,589],{"class":611},[601,1185,801],{"class":790},[601,1187,619],{"class":611},[601,1189,806],{"class":611},[601,1191,1192,1194],{"class":603,"line":656},[601,1193,1100],{"class":611},[601,1195,738],{"class":615},[601,1197,1198],{"class":603,"line":676},[601,1199,680],{"emptyLinePlaceholder":679},[601,1201,1202,1205,1207,1209,1212,1215,1217,1219,1221,1223,1225,1227,1229,1231,1233,1235,1238,1240],{"class":603,"line":683},[601,1203,1204],{"class":607},"await",[601,1206,663],{"class":692},[601,1208,696],{"class":615},[601,1210,1211],{"class":611},"{",[601,1213,1214],{"class":733}," model",[601,1216,589],{"class":611},[601,1218,746],{"class":615},[601,1220,845],{"class":611},[601,1222,848],{"class":692},[601,1224,696],{"class":615},[601,1226,778],{"class":611},[601,1228,855],{"class":628},[601,1230,778],{"class":611},[601,1232,710],{"class":615},[601,1234,758],{"class":611},[601,1236,1237],{"class":615}," prompt ",[601,1239,1100],{"class":611},[601,1241,738],{"class":615},[601,1243,1244],{"class":603,"line":719},[601,1245,680],{"emptyLinePlaceholder":679},[601,1247,1248,1250,1253,1255,1257,1259,1262],{"class":603,"line":741},[601,1249,1137],{"class":699},[601,1251,1252],{"class":615}," cost ",[601,1254,1143],{"class":611},[601,1256,746],{"class":615},[601,1258,845],{"class":611},[601,1260,1261],{"class":692},"getEstimatedCost",[601,1263,911],{"class":615},[601,1265,1266,1269,1271,1273,1275,1278,1281,1284,1286,1289,1292,1294,1297,1299,1302],{"class":603,"line":763},[601,1267,1268],{"class":615},"console",[601,1270,845],{"class":611},[601,1272,755],{"class":692},[601,1274,696],{"class":615},[601,1276,1277],{"class":611},"`",[601,1279,1280],{"class":628},"This call cost $",[601,1282,1283],{"class":611},"${",[601,1285,1126],{"class":615},[601,1287,1288],{"class":611},"?.",[601,1290,1291],{"class":692},"toFixed",[601,1293,696],{"class":615},[601,1295,1296],{"class":790},"4",[601,1298,710],{"class":615},[601,1300,1301],{"class":611},"}`",[601,1303,738],{"class":615},[569,1305,1307,1310],{"id":1306},"onupdatecallback-incremental-updates",[558,1308,1309],{},"onUpdate(callback)"," — incremental updates",[554,1312,1313],{},"Subscribe to metadata updates. The callback fires every time the underlying state flushes:",[1315,1316,1317,1321,1328,1331],"ul",{},[1318,1319,1320],"li",{},"Once per step in multi-step agent runs",[1318,1322,1323,1324,1327],{},"Once per ",[558,1325,1326],{},"captureEmbed"," call",[1318,1329,1330],{},"On model errors",[1318,1332,1333,1334,1337,1338],{},"On ",[558,1335,1336],{},"createEvlogIntegration","'s ",[558,1339,588],{},[554,1341,1342],{},"Each invocation receives a fresh snapshot. Returns an unsubscribe function. Subscriber errors are isolated and never break the AI flow.",[591,1344,1347],{"className":593,"code":1345,"filename":1346,"language":596,"meta":597,"style":597},"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\n  ai.onUpdate((metadata) => {\n    pushToClient(event, {\n      type: 'ai-progress',\n      step: metadata.steps,\n      tokens: metadata.totalTokens,\n      cost: metadata.estimatedCost,\n    })\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({ agent, uiMessages: messages })\n})\n","server\u002Fapi\u002Fagent.post.ts",[558,1348,1349,1378,1396,1414,1418,1440,1456,1481,1497,1501,1524,1537,1553,1569,1585,1600,1607,1613,1617,1635,1659,1678,1696,1702,1706,1731],{"__ignoreMap":597},[601,1350,1351,1353,1355,1358,1360,1363,1365,1368,1370,1372,1374,1376],{"class":603,"line":604},[601,1352,608],{"class":607},[601,1354,612],{"class":611},[601,1356,1357],{"class":615}," ToolLoopAgent",[601,1359,758],{"class":611},[601,1361,1362],{"class":615}," createAgentUIStreamResponse",[601,1364,758],{"class":611},[601,1366,1367],{"class":615}," 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