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result.toTextStreamResponse()\n})\n","After",[434,716,717,742,761,767,789,806,824,828,843,869,876,883,896],{"__ignoreMap":509},[513,718,719,722,725,728,731,734,736,739],{"class":515,"line":516},[513,720,721],{"class":593},"import",[513,723,724],{"class":612}," {",[513,726,727],{"class":604}," useLogger",[513,729,730],{"class":612}," }",[513,732,733],{"class":593}," from",[513,735,659],{"class":612},[513,737,738],{"class":522},"evlog",[513,740,741],{"class":612},"'\n",[513,743,744,746,748,751,753,755,757,759],{"class":515,"line":629},[513,745,721],{"class":593},[513,747,724],{"class":612},[513,749,750],{"class":604}," 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ai",[513,814,638],{"class":612},[513,816,750],{"class":600},[513,818,605],{"class":644},[513,820,821],{"class":604},"log",[513,823,685],{"class":644},[513,825,826],{"class":515,"line":705},[513,827,766],{"emptyLinePlaceholder":765},[513,829,831,833,835,837,839,841],{"class":515,"line":830},8,[513,832,632],{"class":608},[513,834,635],{"class":604},[513,836,638],{"class":612},[513,838,641],{"class":600},[513,840,605],{"class":644},[513,842,647],{"class":612},[513,844,846,848,850,852,854,857,859,861,863,865,867],{"class":515,"line":845},9,[513,847,653],{"class":644},[513,849,656],{"class":612},[513,851,812],{"class":604},[513,853,696],{"class":612},[513,855,856],{"class":600},"wrap",[513,858,605],{"class":644},[513,860,665],{"class":612},[513,862,662],{"class":522},[513,864,665],{"class":612},[513,866,620],{"class":644},[513,868,668],{"class":612},[513,870,872,874],{"class":515,"line":871},10,[513,873,674],{"class":604},[513,875,668],{"class":612},[513,877,879,881],{"class":515,"line":878},11,[513,880,682],{"class":612},[513,882,685],{"class":644},[513,884,886,888,890,892,894],{"class":515,"line":885},12,[513,887,691],{"class":593},[513,889,635],{"class":604},[513,891,696],{"class":612},[513,893,699],{"class":600},[513,895,702],{"class":644},[513,897,899,901],{"class":515,"line":898},13,[513,900,708],{"class":612},[513,902,685],{"class":604},[431,904,905],{},"Your wide event now includes:",[503,907,912],{"className":908,"code":909,"filename":910,"language":911,"meta":509,"style":509},"language-json shiki shiki-themes material-theme-lighter material-theme material-theme-palenight","{\n  \"method\": \"POST\",\n  \"path\": \"\u002Fapi\u002Fchat\",\n  \"status\": 200,\n  \"duration\": \"4.5s\",\n  \"ai\": {\n    \"calls\": 1,\n    \"model\": \"claude-sonnet-4.6\",\n    \"provider\": \"anthropic\",\n    \"inputTokens\": 3312,\n    \"outputTokens\": 814,\n    \"totalTokens\": 4126,\n    \"reasoningTokens\": 225,\n    \"finishReason\": \"stop\",\n    \"msToFirstChunk\": 234,\n    \"msToFinish\": 4500,\n    \"tokensPerSecond\": 180\n  }\n}\n","Wide Event","json",[434,913,914,918,941,961,978,998,1011,1028,1048,1068,1084,1100,1116,1132,1153,1170,1187,1202,1208],{"__ignoreMap":509},[513,915,916],{"class":515,"line":516},[513,917,647],{"class":612},[513,919,920,923,926,929,931,934,937,939],{"class":515,"line":629},[513,921,922],{"class":612},"  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1",[513,1027,668],{"class":612},[513,1029,1030,1032,1035,1037,1039,1041,1044,1046],{"class":515,"line":830},[513,1031,1015],{"class":612},[513,1033,1034],{"class":519},"model",[513,1036,928],{"class":612},[513,1038,656],{"class":612},[513,1040,933],{"class":612},[513,1042,1043],{"class":522},"claude-sonnet-4.6",[513,1045,928],{"class":612},[513,1047,668],{"class":612},[513,1049,1050,1052,1055,1057,1059,1061,1064,1066],{"class":515,"line":845},[513,1051,1015],{"class":612},[513,1053,1054],{"class":519},"provider",[513,1056,928],{"class":612},[513,1058,656],{"class":612},[513,1060,933],{"class":612},[513,1062,1063],{"class":522},"anthropic",[513,1065,928],{"class":612},[513,1067,668],{"class":612},[513,1069,1070,1072,1075,1077,1079,1082],{"class":515,"line":871},[513,1071,1015],{"class":612},[513,1073,1074],{"class":519},"inputTokens",[513,1076,928],{"class":612},[513,1078,656],{"class":612},[513,1080,1081],{"class":974}," 3312",[513,1083,668],{"class":612},[513,1085,1086,1088,1091,1093,1095,1098],{"class":515,"line":878},[513,1087,1015],{"class":612},[513,1089,1090],{"class":519},"outputTokens",[513,1092,928],{"class":612},[513,1094,656],{"class":612},[513,1096,1097],{"class":974}," 814",[513,1099,668],{"class":612},[513,1101,1102,1104,1107,1109,1111,1114],{"class":515,"line":885},[513,1103,1015],{"class":612},[513,1105,1106],{"class":519},"totalTokens",[513,1108,928],{"class":612},[513,1110,656],{"class":612},[513,1112,1113],{"class":974}," 4126",[513,1115,668],{"class":612},[513,1117,1118,1120,1123,1125,1127,1130],{"class":515,"line":898},[513,1119,1015],{"class":612},[513,1121,1122],{"class":519},"reasoningTokens",[513,1124,928],{"class":612},[513,1126,656],{"class":612},[513,1128,1129],{"class":974}," 225",[513,1131,668],{"class":612},[513,1133,1135,1137,1140,1142,1144,1146,1149,1151],{"class":515,"line":1134},14,[513,1136,1015],{"class":612},[513,1138,1139],{"class":519},"finishReason",[513,1141,928],{"class":612},[513,1143,656],{"class":612},[513,1145,933],{"class":612},[513,1147,1148],{"class":522},"stop",[513,1150,928],{"class":612},[513,1152,668],{"class":612},[513,1154,1156,1158,1161,1163,1165,1168],{"class":515,"line":1155},15,[513,1157,1015],{"class":612},[513,1159,1160],{"class":519},"msToFirstChunk",[513,1162,928],{"class":612},[513,1164,656],{"class":612},[513,1166,1167],{"class":974}," 234",[513,1169,668],{"class":612},[513,1171,1173,1175,1178,1180,1182,1185],{"class":515,"line":1172},16,[513,1174,1015],{"class":612},[513,1176,1177],{"class":519},"msToFinish",[513,1179,928],{"class":612},[513,1181,656],{"class":612},[513,1183,1184],{"class":974}," 4500",[513,1186,668],{"class":612},[513,1188,1190,1192,1195,1197,1199],{"class":515,"line":1189},17,[513,1191,1015],{"class":612},[513,1193,1194],{"class":519},"tokensPerSecond",[513,1196,928],{"class":612},[513,1198,656],{"class":612},[513,1200,1201],{"class":974}," 180\n",[513,1203,1205],{"class":515,"line":1204},18,[513,1206,1207],{"class":612},"  }\n",[513,1209,1211],{"class":515,"line":1210},19,[513,1212,1213],{"class":612},"}\n",[492,1215,1217],{"id":1216},"how-it-works","How It Works",[431,1219,1220,1223,1224,1227],{},[434,1221,1222],{},"createAILogger(log, options?)"," returns an ",[434,1225,1226],{},"AILogger"," with the following methods:",[1229,1230,1231,1244],"table",{},[1232,1233,1234],"thead",{},[1235,1236,1237,1241],"tr",{},[1238,1239,1240],"th",{},"Method",[1238,1242,1243],{},"Description",[1245,1246,1247,1277,1295,1308,1322],"tbody",{},[1235,1248,1249,1255],{},[1250,1251,1252],"td",{},[434,1253,1254],{},"wrap(model)",[1250,1256,1257,1258,1261,1262,1265,1266,1269,1270,1273,1274,696],{},"Wraps a language model with middleware. Accepts a model string (e.g. ",[434,1259,1260],{},"'anthropic\u002Fclaude-sonnet-4.6'",") or a ",[434,1263,1264],{},"LanguageModelV3"," object. Works with ",[434,1267,1268],{},"generateText",", ",[434,1271,1272],{},"streamText",", and ",[434,1275,1276],{},"ToolLoopAgent",[1235,1278,1279,1284],{},[1250,1280,1281],{},[434,1282,1283],{},"captureEmbed(result)",[1250,1285,1286,1287,1290,1291,1294],{},"Manually captures token usage, model info, and dimensions from ",[434,1288,1289],{},"embed()"," or ",[434,1292,1293],{},"embedMany()"," results.",[1235,1296,1297,1302],{},[1250,1298,1299],{},[434,1300,1301],{},"getMetadata()",[1250,1303,1304,1305,696],{},"Returns a snapshot of the current execution metadata. See ",[481,1306,1307],{"href":265},"Access Metadata",[1235,1309,1310,1315],{},[1250,1311,1312],{},[434,1313,1314],{},"getEstimatedCost()",[1250,1316,1317,1318,1321],{},"Returns the current estimated cost in dollars when a ",[434,1319,1320],{},"cost"," map is configured.",[1235,1323,1324,1329],{},[1250,1325,1326],{},[434,1327,1328],{},"onUpdate(callback)",[1250,1330,1331],{},"Subscribe to metadata updates. Fires on every step, embed, error, and integration finish.",[431,1333,1334],{},"The middleware intercepts calls at the provider level. It does not touch your callbacks, prompts, or responses. Captured data flows through the normal evlog pipeline (sampling, enrichers, drains) and lands in Axiom, Better Stack, or wherever you drain to.",[492,1336,1338],{"id":1337},"where-to-next","Where to next",[1340,1341,1342,1351,1354,1360],"card-group",{},[1343,1344,1346,1269,1348,1350],"card",{"icon":257,"title":1345,"to":255},"Usage Patterns",[434,1347,1272],{},[434,1349,1268],{},", multi-step agents, RAG, multiple models — every common pattern, ready to copy.",[1343,1352,1353],{"icon":262,"title":259,"to":260},"Capture tool inputs (with redaction and truncation), enable cost estimation, and handle errors.",[1343,1355,1356,1357,1359],{"icon":267,"title":1307,"to":265},"Read the captured ",[434,1358,1004],{}," data inside your handler — persist it, bill against it, or stream it to the client.",[1343,1361,1363,1364,1367],{"icon":272,"title":1362,"to":270},"Deeper Telemetry","Add tool execution timing and total wall time with ",[434,1365,1366],{},"createEvlogIntegration",". Compose with other middlewares.",[492,1369,1371],{"id":1370},"works-with-all-frameworks","Works With All Frameworks",[431,1373,1374,1376],{},[434,1375,436],{}," works with any framework that evlog supports:",[500,1378,1379,1454,1571,1664,1760,1849,1919],{},[503,1380,1382],{"className":583,"code":1381,"filename":157,"language":586,"meta":509,"style":509},"import { useLogger } from 'evlog'\nimport { createAILogger } from 'evlog\u002Fai'\n\nconst log = useLogger(event)\nconst ai = createAILogger(log)\n",[434,1383,1384,1402,1420,1424,1440],{"__ignoreMap":509},[513,1385,1386,1388,1390,1392,1394,1396,1398,1400],{"class":515,"line":516},[513,1387,721],{"class":593},[513,1389,724],{"class":612},[513,1391,727],{"class":604},[513,1393,730],{"class":612},[513,1395,733],{"class":593},[513,1397,659],{"class":612},[513,1399,738],{"class":522},[513,1401,741],{"class":612},[513,1403,1404,1406,1408,1410,1412,1414,1416,1418],{"class":515,"line":629},[513,1405,721],{"class":593},[513,1407,724],{"class":612},[513,1409,750],{"class":604},[513,1411,730],{"class":612},[513,1413,733],{"class":593},[513,1415,659],{"class":612},[513,1417,436],{"class":522},[513,1419,741],{"class":612},[513,1421,1422],{"class":515,"line":650},[513,1423,766],{"emptyLinePlaceholder":765},[513,1425,1426,1429,1432,1435,1437],{"class":515,"line":671},[513,1427,1428],{"class":608},"const",[513,1430,1431],{"class":604}," log ",[513,1433,1434],{"class":612},"=",[513,1436,727],{"class":600},[513,1438,1439],{"class":604},"(event)\n",[513,1441,1442,1444,1447,1449,1451],{"class":515,"line":679},[513,1443,1428],{"class":608},[513,1445,1446],{"class":604}," ai ",[513,1448,1434],{"class":612},[513,1450,750],{"class":600},[513,1452,1453],{"class":604},"(log)\n",[503,1455,1457],{"className":583,"code":1456,"filename":162,"language":586,"meta":509,"style":509},"import { withEvlog, useLogger } from '@\u002Flib\u002Fevlog'\nimport { createAILogger } from 'evlog\u002Fai'\n\nexport const POST = withEvlog(async () => {\n  const log = useLogger()\n  const ai = createAILogger(log)\n  \u002F\u002F ...\n})\n",[434,1458,1459,1484,1502,1506,1531,1543,1559,1565],{"__ignoreMap":509},[513,1460,1461,1463,1465,1468,1471,1473,1475,1477,1479,1482],{"class":515,"line":516},[513,1462,721],{"class":593},[513,1464,724],{"class":612},[513,1466,1467],{"class":604}," withEvlog",[513,1469,1470],{"class":612},",",[513,1472,727],{"class":604},[513,1474,730],{"class":612},[513,1476,733],{"class":593},[513,1478,659],{"class":612},[513,1480,1481],{"class":522},"@\u002Flib\u002Fevlog",[513,1483,741],{"class":612},[513,1485,1486,1488,1490,1492,1494,1496,1498,1500],{"class":515,"line":629},[513,1487,721],{"class":593},[513,1489,724],{"class":612},[513,1491,750],{"class":604},[513,1493,730],{"class":612},[513,1495,733],{"class":593},[513,1497,659],{"class":612},[513,1499,436],{"class":522},[513,1501,741],{"class":612},[513,1503,1504],{"class":515,"line":650},[513,1505,766],{"emptyLinePlaceholder":765},[513,1507,1508,1510,1513,1516,1518,1520,1522,1524,1527,1529],{"class":515,"line":671},[513,1509,594],{"class":593},[513,1511,1512],{"class":608}," const",[513,1514,1515],{"class":604}," POST ",[513,1517,1434],{"class":612},[513,1519,1467],{"class":600},[513,1521,605],{"class":604},[513,1523,609],{"class":608},[513,1525,1526],{"class":612}," ()",[513,1528,623],{"class":608},[513,1530,626],{"class":612},[513,1532,1533,1535,1537,1539,1541],{"class":515,"line":679},[513,1534,632],{"class":608},[513,1536,795],{"class":604},[513,1538,638],{"class":612},[513,1540,727],{"class":600},[513,1542,702],{"class":644},[513,1544,1545,1547,1549,1551,1553,1555,1557],{"class":515,"line":688},[513,1546,632],{"class":608},[513,1548,812],{"class":604},[513,1550,638],{"class":612},[513,1552,750],{"class":600},[513,1554,605],{"class":644},[513,1556,821],{"class":604},[513,1558,685],{"class":644},[513,1560,1561],{"class":515,"line":705},[513,1562,1564],{"class":1563},"sHwdD","  \u002F\u002F ...\n",[513,1566,1567,1569],{"class":515,"line":830},[513,1568,708],{"class":612},[513,1570,685],{"class":604},[503,1572,1574],{"className":583,"code":1573,"filename":187,"language":586,"meta":509,"style":509},"import { createAILogger } from 'evlog\u002Fai'\n\napp.post('\u002Fapi\u002Fchat', (req, res) => {\n  const ai = createAILogger(req.log)\n  \u002F\u002F 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