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result.toTextStreamResponse()\n})\n","After",[439,721,722,747,766,772,794,811,829,833,848,874,881,888,901],{"__ignoreMap":514},[518,723,724,727,730,733,736,739,741,744],{"class":520,"line":521},[518,725,726],{"class":598},"import",[518,728,729],{"class":617}," {",[518,731,732],{"class":609}," useLogger",[518,734,735],{"class":617}," }",[518,737,738],{"class":598}," from",[518,740,664],{"class":617},[518,742,743],{"class":527},"evlog",[518,745,746],{"class":617},"'\n",[518,748,749,751,753,756,758,760,762,764],{"class":520,"line":634},[518,750,726],{"class":598},[518,752,729],{"class":617},[518,754,755],{"class":609}," 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ai",[518,819,643],{"class":617},[518,821,755],{"class":605},[518,823,610],{"class":649},[518,825,826],{"class":609},"log",[518,828,690],{"class":649},[518,830,831],{"class":520,"line":710},[518,832,771],{"emptyLinePlaceholder":770},[518,834,836,838,840,842,844,846],{"class":520,"line":835},8,[518,837,637],{"class":613},[518,839,640],{"class":609},[518,841,643],{"class":617},[518,843,646],{"class":605},[518,845,610],{"class":649},[518,847,652],{"class":617},[518,849,851,853,855,857,859,862,864,866,868,870,872],{"class":520,"line":850},9,[518,852,658],{"class":649},[518,854,661],{"class":617},[518,856,817],{"class":609},[518,858,701],{"class":617},[518,860,861],{"class":605},"wrap",[518,863,610],{"class":649},[518,865,670],{"class":617},[518,867,667],{"class":527},[518,869,670],{"class":617},[518,871,625],{"class":649},[518,873,673],{"class":617},[518,875,877,879],{"class":520,"line":876},10,[518,878,679],{"class":609},[518,880,673],{"class":617},[518,882,884,886],{"class":520,"line":883},11,[518,885,687],{"class":617},[518,887,690],{"class":649},[518,889,891,893,895,897,899],{"class":520,"line":890},12,[518,892,696],{"class":598},[518,894,640],{"class":609},[518,896,701],{"class":617},[518,898,704],{"class":605},[518,900,707],{"class":649},[518,902,904,906],{"class":520,"line":903},13,[518,905,713],{"class":617},[518,907,690],{"class":609},[436,909,910],{},"Your wide event now includes:",[508,912,917],{"className":913,"code":914,"filename":915,"language":916,"meta":514,"style":514},"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",[439,918,919,923,946,966,983,1003,1016,1033,1053,1073,1089,1105,1121,1137,1158,1175,1192,1207,1213],{"__ignoreMap":514},[518,920,921],{"class":520,"line":521},[518,922,652],{"class":617},[518,924,925,928,931,934,936,939,942,944],{"class":520,"line":634},[518,926,927],{"class":617},"  \"",[518,929,930],{"class":613},"method",[518,932,933],{"class":617},"\"",[518,935,661],{"class":617},[518,937,938],{"class":617}," \"",[518,940,941],{"class":527},"POST",[518,943,933],{"class":617},[518,945,673],{"class":617},[518,947,948,950,953,955,957,959,962,964],{"class":520,"line":655},[518,949,927],{"class":617},[518,951,952],{"class":613},"path",[518,954,933],{"class":617},[518,956,661],{"class":617},[518,958,938],{"class":617},[518,960,961],{"class":527},"\u002Fapi\u002Fchat",[518,963,933],{"class":617},[518,965,673],{"class":617},[518,967,968,970,973,975,977,981],{"class":520,"line":676},[518,969,927],{"class":617},[518,971,972],{"class":613},"status",[518,974,933],{"class":617},[518,976,661],{"class":617},[518,978,980],{"class":979},"sbssI"," 200",[518,982,673],{"class":617},[518,984,985,987,990,992,994,996,999,1001],{"class":520,"line":684},[518,986,927],{"class":617},[518,988,989],{"class":613},"duration",[518,991,933],{"class":617},[518,993,661],{"class":617},[518,995,938],{"class":617},[518,997,998],{"class":527},"4.5s",[518,1000,933],{"class":617},[518,1002,673],{"class":617},[518,1004,1005,1007,1010,1012,1014],{"class":520,"line":693},[518,1006,927],{"class":617},[518,1008,1009],{"class":613},"ai",[518,1011,933],{"class":617},[518,1013,661],{"class":617},[518,1015,631],{"class":617},[518,1017,1018,1021,1024,1026,1028,1031],{"class":520,"line":710},[518,1019,1020],{"class":617},"    \"",[518,1022,1023],{"class":524},"calls",[518,1025,933],{"class":617},[518,1027,661],{"class":617},[518,1029,1030],{"class":979}," 1",[518,1032,673],{"class":617},[518,1034,1035,1037,1040,1042,1044,1046,1049,1051],{"class":520,"line":835},[518,1036,1020],{"class":617},[518,1038,1039],{"class":524},"model",[518,1041,933],{"class":617},[518,1043,661],{"class":617},[518,1045,938],{"class":617},[518,1047,1048],{"class":527},"claude-sonnet-4.6",[518,1050,933],{"class":617},[518,1052,673],{"class":617},[518,1054,1055,1057,1060,1062,1064,1066,1069,1071],{"class":520,"line":850},[518,1056,1020],{"class":617},[518,1058,1059],{"class":524},"provider",[518,1061,933],{"class":617},[518,1063,661],{"class":617},[518,1065,938],{"class":617},[518,1067,1068],{"class":527},"anthropic",[518,1070,933],{"class":617},[518,1072,673],{"class":617},[518,1074,1075,1077,1080,1082,1084,1087],{"class":520,"line":876},[518,1076,1020],{"class":617},[518,1078,1079],{"class":524},"inputTokens",[518,1081,933],{"class":617},[518,1083,661],{"class":617},[518,1085,1086],{"class":979}," 3312",[518,1088,673],{"class":617},[518,1090,1091,1093,1096,1098,1100,1103],{"class":520,"line":883},[518,1092,1020],{"class":617},[518,1094,1095],{"class":524},"outputTokens",[518,1097,933],{"class":617},[518,1099,661],{"class":617},[518,1101,1102],{"class":979}," 814",[518,1104,673],{"class":617},[518,1106,1107,1109,1112,1114,1116,1119],{"class":520,"line":890},[518,1108,1020],{"class":617},[518,1110,1111],{"class":524},"totalTokens",[518,1113,933],{"class":617},[518,1115,661],{"class":617},[518,1117,1118],{"class":979}," 4126",[518,1120,673],{"class":617},[518,1122,1123,1125,1128,1130,1132,1135],{"class":520,"line":903},[518,1124,1020],{"class":617},[518,1126,1127],{"class":524},"reasoningTokens",[518,1129,933],{"class":617},[518,1131,661],{"class":617},[518,1133,1134],{"class":979}," 225",[518,1136,673],{"class":617},[518,1138,1140,1142,1145,1147,1149,1151,1154,1156],{"class":520,"line":1139},14,[518,1141,1020],{"class":617},[518,1143,1144],{"class":524},"finishReason",[518,1146,933],{"class":617},[518,1148,661],{"class":617},[518,1150,938],{"class":617},[518,1152,1153],{"class":527},"stop",[518,1155,933],{"class":617},[518,1157,673],{"class":617},[518,1159,1161,1163,1166,1168,1170,1173],{"class":520,"line":1160},15,[518,1162,1020],{"class":617},[518,1164,1165],{"class":524},"msToFirstChunk",[518,1167,933],{"class":617},[518,1169,661],{"class":617},[518,1171,1172],{"class":979}," 234",[518,1174,673],{"class":617},[518,1176,1178,1180,1183,1185,1187,1190],{"class":520,"line":1177},16,[518,1179,1020],{"class":617},[518,1181,1182],{"class":524},"msToFinish",[518,1184,933],{"class":617},[518,1186,661],{"class":617},[518,1188,1189],{"class":979}," 4500",[518,1191,673],{"class":617},[518,1193,1195,1197,1200,1202,1204],{"class":520,"line":1194},17,[518,1196,1020],{"class":617},[518,1198,1199],{"class":524},"tokensPerSecond",[518,1201,933],{"class":617},[518,1203,661],{"class":617},[518,1205,1206],{"class":979}," 180\n",[518,1208,1210],{"class":520,"line":1209},18,[518,1211,1212],{"class":617},"  }\n",[518,1214,1216],{"class":520,"line":1215},19,[518,1217,1218],{"class":617},"}\n",[497,1220,1222],{"id":1221},"how-it-works","How It Works",[436,1224,1225,1228,1229,1232],{},[439,1226,1227],{},"createAILogger(log, options?)"," returns an ",[439,1230,1231],{},"AILogger"," with the following methods:",[1234,1235,1236,1249],"table",{},[1237,1238,1239],"thead",{},[1240,1241,1242,1246],"tr",{},[1243,1244,1245],"th",{},"Method",[1243,1247,1248],{},"Description",[1250,1251,1252,1282,1300,1313,1327],"tbody",{},[1240,1253,1254,1260],{},[1255,1256,1257],"td",{},[439,1258,1259],{},"wrap(model)",[1255,1261,1262,1263,1266,1267,1270,1271,1274,1275,1278,1279,701],{},"Wraps a language model with middleware. Accepts a model string (e.g. ",[439,1264,1265],{},"'anthropic\u002Fclaude-sonnet-4.6'",") or a ",[439,1268,1269],{},"LanguageModelV3"," object. Works with ",[439,1272,1273],{},"generateText",", ",[439,1276,1277],{},"streamText",", and ",[439,1280,1281],{},"ToolLoopAgent",[1240,1283,1284,1289],{},[1255,1285,1286],{},[439,1287,1288],{},"captureEmbed(result)",[1255,1290,1291,1292,1295,1296,1299],{},"Manually captures token usage, model info, and dimensions from ",[439,1293,1294],{},"embed()"," or ",[439,1297,1298],{},"embedMany()"," results.",[1240,1301,1302,1307],{},[1255,1303,1304],{},[439,1305,1306],{},"getMetadata()",[1255,1308,1309,1310,701],{},"Returns a snapshot of the current execution metadata. See ",[486,1311,1312],{"href":91},"Access Metadata",[1240,1314,1315,1320],{},[1255,1316,1317],{},[439,1318,1319],{},"getEstimatedCost()",[1255,1321,1322,1323,1326],{},"Returns the current estimated cost in dollars when a ",[439,1324,1325],{},"cost"," map is configured.",[1240,1328,1329,1334],{},[1255,1330,1331],{},[439,1332,1333],{},"onUpdate(callback)",[1255,1335,1336],{},"Subscribe to metadata updates. Fires on every step, embed, error, and integration finish.",[436,1338,1339],{},"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.",[497,1341,1343],{"id":1342},"where-to-next","Where to next",[1345,1346,1347,1356,1359,1365],"card-group",{},[1348,1349,1351,1274,1353,1355],"card",{"icon":83,"title":1350,"to":81},"Usage Patterns",[439,1352,1277],{},[439,1354,1273],{},", multi-step agents, RAG, multiple models — every common pattern, ready to copy.",[1348,1357,1358],{"icon":88,"title":85,"to":86},"Capture tool inputs (with redaction and truncation), enable cost estimation, and handle errors.",[1348,1360,1361,1362,1364],{"icon":93,"title":1312,"to":91},"Read the captured ",[439,1363,1009],{}," data inside your handler — persist it, bill against it, or stream it to the client.",[1348,1366,1368,1369,1372],{"icon":98,"title":1367,"to":96},"Deeper Telemetry","Add tool execution timing and total wall time with ",[439,1370,1371],{},"createEvlogIntegration",". Compose with other middlewares.",[497,1374,1376],{"id":1375},"works-with-all-frameworks","Works With All Frameworks",[436,1378,1379,1381],{},[439,1380,441],{}," works with any framework that evlog supports:",[505,1383,1384,1459,1576,1669,1765,1854,1924],{},[508,1385,1387],{"className":588,"code":1386,"filename":211,"language":591,"meta":514,"style":514},"import { useLogger } from 'evlog'\nimport { createAILogger } from 'evlog\u002Fai'\n\nconst log = useLogger(event)\nconst ai = createAILogger(log)\n",[439,1388,1389,1407,1425,1429,1445],{"__ignoreMap":514},[518,1390,1391,1393,1395,1397,1399,1401,1403,1405],{"class":520,"line":521},[518,1392,726],{"class":598},[518,1394,729],{"class":617},[518,1396,732],{"class":609},[518,1398,735],{"class":617},[518,1400,738],{"class":598},[518,1402,664],{"class":617},[518,1404,743],{"class":527},[518,1406,746],{"class":617},[518,1408,1409,1411,1413,1415,1417,1419,1421,1423],{"class":520,"line":634},[518,1410,726],{"class":598},[518,1412,729],{"class":617},[518,1414,755],{"class":609},[518,1416,735],{"class":617},[518,1418,738],{"class":598},[518,1420,664],{"class":617},[518,1422,441],{"class":527},[518,1424,746],{"class":617},[518,1426,1427],{"class":520,"line":655},[518,1428,771],{"emptyLinePlaceholder":770},[518,1430,1431,1434,1437,1440,1442],{"class":520,"line":676},[518,1432,1433],{"class":613},"const",[518,1435,1436],{"class":609}," log ",[518,1438,1439],{"class":617},"=",[518,1441,732],{"class":605},[518,1443,1444],{"class":609},"(event)\n",[518,1446,1447,1449,1452,1454,1456],{"class":520,"line":684},[518,1448,1433],{"class":613},[518,1450,1451],{"class":609}," ai ",[518,1453,1439],{"class":617},[518,1455,755],{"class":605},[518,1457,1458],{"class":609},"(log)\n",[508,1460,1462],{"className":588,"code":1461,"filename":216,"language":591,"meta":514,"style":514},"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",[439,1463,1464,1489,1507,1511,1536,1548,1564,1570],{"__ignoreMap":514},[518,1465,1466,1468,1470,1473,1476,1478,1480,1482,1484,1487],{"class":520,"line":521},[518,1467,726],{"class":598},[518,1469,729],{"class":617},[518,1471,1472],{"class":609}," withEvlog",[518,1474,1475],{"class":617},",",[518,1477,732],{"class":609},[518,1479,735],{"class":617},[518,1481,738],{"class":598},[518,1483,664],{"class":617},[518,1485,1486],{"class":527},"@\u002Flib\u002Fevlog",[518,1488,746],{"class":617},[518,1490,1491,1493,1495,1497,1499,1501,1503,1505],{"class":520,"line":634},[518,1492,726],{"class":598},[518,1494,729],{"class":617},[518,1496,755],{"class":609},[518,1498,735],{"class":617},[518,1500,738],{"class":598},[518,1502,664],{"class":617},[518,1504,441],{"class":527},[518,1506,746],{"class":617},[518,1508,1509],{"class":520,"line":655},[518,1510,771],{"emptyLinePlaceholder":770},[518,1512,1513,1515,1518,1521,1523,1525,1527,1529,1532,1534],{"class":520,"line":676},[518,1514,599],{"class":598},[518,1516,1517],{"class":613}," const",[518,1519,1520],{"class":609}," POST ",[518,1522,1439],{"class":617},[518,1524,1472],{"class":605},[518,1526,610],{"class":609},[518,1528,614],{"class":613},[518,1530,1531],{"class":617}," ()",[518,1533,628],{"class":613},[518,1535,631],{"class":617},[518,1537,1538,1540,1542,1544,1546],{"class":520,"line":684},[518,1539,637],{"class":613},[518,1541,800],{"class":609},[518,1543,643],{"class":617},[518,1545,732],{"class":605},[518,1547,707],{"class":649},[518,1549,1550,1552,1554,1556,1558,1560,1562],{"class":520,"line":693},[518,1551,637],{"class":613},[518,1553,817],{"class":609},[518,1555,643],{"class":617},[518,1557,755],{"class":605},[518,1559,610],{"class":649},[518,1561,826],{"class":609},[518,1563,690],{"class":649},[518,1565,1566],{"class":520,"line":710},[518,1567,1569],{"class":1568},"sHwdD","  \u002F\u002F ...\n",[518,1571,1572,1574],{"class":520,"line":835},[518,1573,713],{"class":617},[518,1575,690],{"class":609},[508,1577,1579],{"className":588,"code":1578,"filename":241,"language":591,"meta":514,"style":514},"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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