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context","\u002Fcompare\u002Fconsola","8.compare\u002F5.consola",{"id":608,"title":351,"body":609,"description":1750,"extension":1751,"links":1752,"meta":1758,"navigation":1759,"path":352,"seo":1760,"stem":353,"__hash__":1761},"docs\u002F5.use-cases\u002F2.ai-sdk\u002F03.options.md",{"type":610,"value":611,"toc":1737},"minimark",[612,620,734,739,753,765,770,826,830,872,876,1027,1077,1090,1094,1103,1144,1147,1182,1185,1249,1256,1260,1265,1304,1308,1315,1384,1429,1449,1453,1463,1568,1578,1585,1589,1592,1726,1733],[613,614,615,619],"p",{},[616,617,618],"code",{},"createAILogger(log, options?)"," accepts a single options bag. Every option is opt-in. The defaults stay quiet, and they stay safe: nothing a model was sent or returned reaches your drain until you ask for it by name.",[621,622,623,642],"table",{},[624,625,626],"thead",{},[627,628,629,633,636,639],"tr",{},[630,631,632],"th",{},"Option",[630,634,635],{},"Type",[630,637,638],{},"Default",[630,640,641],{},"Description",[643,644,645,666,689,710],"tbody",{},[627,646,647,653,658,663],{},[648,649,650],"td",{},[616,651,652],{},"toolInputs",[648,654,655],{},[616,656,657],{},"boolean | ToolInputsOptions",[648,659,660],{},[616,661,662],{},"false",[648,664,665],{},"Capture tool call inputs alongside their names (off by default to avoid leaking sensitive data).",[627,667,668,673,678,682],{},[648,669,670],{},[616,671,672],{},"prompt",[648,674,675],{},[616,676,677],{},"boolean | CaptureOptions",[648,679,680],{},[616,681,662],{},[648,683,684,685,688],{},"Capture the prompt sent to the first model call as ",[616,686,687],{},"ai.prompt"," (off by default to avoid leaking sensitive data).",[627,690,691,696,700,704],{},[648,692,693],{},[616,694,695],{},"output",[648,697,698],{},[616,699,677],{},[648,701,702],{},[616,703,662],{},[648,705,706,707,688],{},"Capture the text generated by the last model call as ",[616,708,709],{},"ai.output",[627,711,712,717,722,727],{},[648,713,714],{},[616,715,716],{},"cost",[648,718,719],{},[616,720,721],{},"Record\u003Cstring, ModelCost>",[648,723,724],{},[616,725,726],{},"undefined",[648,728,729,730,733],{},"Pricing map. Keys are model IDs, values are ",[616,731,732],{},"{ input, output }"," in dollars per 1M tokens.",[735,736,738],"h2",{"id":737},"tool-inputs","Tool Inputs",[613,740,741,742,745,746,749,750,752],{},"By default, ",[616,743,744],{},"ai.toolCalls"," is a ",[616,747,748],{},"string[]"," of tool names. Enable ",[616,751,652],{}," to capture inputs too, which suits debugging agent behaviour or auditing what data the model reached for.",[754,755,756,757,760,761,764],"warning",{},"Tool inputs get large, and they carry SQL, API keys and customer PII. Reach for ",[616,758,759],{},"maxLength"," and ",[616,762,763],{},"transform"," before raw capture in production.",[766,767,769],"h3",{"id":768},"capture-everything","Capture everything",[771,772,777],"pre",{"className":773,"code":774,"language":775,"meta":776,"style":776},"language-typescript shiki shiki-themes material-theme-lighter material-theme material-theme-palenight","const ai = createAILogger(log, { toolInputs: true })\n","typescript","",[616,778,779],{"__ignoreMap":776},[780,781,784,788,792,796,800,803,806,809,813,816,820,823],"span",{"class":782,"line":783},"line",1,[780,785,787],{"class":786},"spNyl","const",[780,789,791],{"class":790},"sTEyZ"," ai ",[780,793,795],{"class":794},"sMK4o","=",[780,797,799],{"class":798},"s2Zo4"," createAILogger",[780,801,802],{"class":790},"(log",[780,804,805],{"class":794},",",[780,807,808],{"class":794}," {",[780,810,812],{"class":811},"swJcz"," toolInputs",[780,814,815],{"class":794},":",[780,817,819],{"class":818},"sfNiH"," true",[780,821,822],{"class":794}," }",[780,824,825],{"class":790},")\n",[766,827,829],{"id":828},"truncate-long-inputs","Truncate long inputs",[771,831,833],{"className":773,"code":832,"language":775,"meta":776,"style":776},"const ai = createAILogger(log, { toolInputs: { maxLength: 200 } })\n",[616,834,835],{"__ignoreMap":776},[780,836,837,839,841,843,845,847,849,851,853,855,857,860,862,866,868,870],{"class":782,"line":783},[780,838,787],{"class":786},[780,840,791],{"class":790},[780,842,795],{"class":794},[780,844,799],{"class":798},[780,846,802],{"class":790},[780,848,805],{"class":794},[780,850,808],{"class":794},[780,852,812],{"class":811},[780,854,815],{"class":794},[780,856,808],{"class":794},[780,858,859],{"class":811}," maxLength",[780,861,815],{"class":794},[780,863,865],{"class":864},"sbssI"," 200",[780,867,822],{"class":794},[780,869,822],{"class":794},[780,871,825],{"class":790},[766,873,875],{"id":874},"redact-sensitive-fields","Redact sensitive fields",[771,877,879],{"className":773,"code":878,"language":775,"meta":776,"style":776},"const ai = createAILogger(log, {\n  toolInputs: {\n    maxLength: 500,\n    transform: (input, toolName) => {\n      if (toolName === 'queryDB') return { sql: '***' }\n      return input\n    },\n  },\n})\n",[616,880,881,898,908,922,950,998,1007,1013,1019],{"__ignoreMap":776},[780,882,883,885,887,889,891,893,895],{"class":782,"line":783},[780,884,787],{"class":786},[780,886,791],{"class":790},[780,888,795],{"class":794},[780,890,799],{"class":798},[780,892,802],{"class":790},[780,894,805],{"class":794},[780,896,897],{"class":794}," {\n",[780,899,901,904,906],{"class":782,"line":900},2,[780,902,903],{"class":811},"  toolInputs",[780,905,815],{"class":794},[780,907,897],{"class":794},[780,909,911,914,916,919],{"class":782,"line":910},3,[780,912,913],{"class":811},"    maxLength",[780,915,815],{"class":794},[780,917,918],{"class":864}," 500",[780,920,921],{"class":794},",\n",[780,923,925,928,930,933,937,939,942,945,948],{"class":782,"line":924},4,[780,926,927],{"class":798},"    transform",[780,929,815],{"class":794},[780,931,932],{"class":794}," (",[780,934,936],{"class":935},"sHdIc","input",[780,938,805],{"class":794},[780,940,941],{"class":935}," toolName",[780,943,944],{"class":794},")",[780,946,947],{"class":786}," =>",[780,949,897],{"class":794},[780,951,953,957,959,962,965,968,972,975,978,981,983,986,988,990,993,995],{"class":782,"line":952},5,[780,954,956],{"class":955},"s7zQu","      if",[780,958,932],{"class":811},[780,960,961],{"class":790},"toolName",[780,963,964],{"class":794}," ===",[780,966,967],{"class":794}," '",[780,969,971],{"class":970},"sfazB","queryDB",[780,973,974],{"class":794},"'",[780,976,977],{"class":811},") ",[780,979,980],{"class":955},"return",[780,982,808],{"class":794},[780,984,985],{"class":811}," sql",[780,987,815],{"class":794},[780,989,967],{"class":794},[780,991,992],{"class":970},"***",[780,994,974],{"class":794},[780,996,997],{"class":794}," }\n",[780,999,1001,1004],{"class":782,"line":1000},6,[780,1002,1003],{"class":955},"      return",[780,1005,1006],{"class":790}," input\n",[780,1008,1010],{"class":782,"line":1009},7,[780,1011,1012],{"class":794},"    },\n",[780,1014,1016],{"class":782,"line":1015},8,[780,1017,1018],{"class":794},"  },\n",[780,1020,1022,1025],{"class":782,"line":1021},9,[780,1023,1024],{"class":794},"}",[780,1026,825],{"class":790},[621,1028,1029,1040],{},[624,1030,1031],{},[627,1032,1033,1036,1038],{},[630,1034,1035],{},"Sub-option",[630,1037,635],{},[630,1039,641],{},[643,1041,1042,1060],{},[627,1043,1044,1048,1053],{},[648,1045,1046],{},[616,1047,759],{},[648,1049,1050],{},[616,1051,1052],{},"number",[648,1054,1055,1056,1059],{},"Truncate stringified inputs exceeding this character length (appends ",[616,1057,1058],{},"…",").",[627,1061,1062,1066,1071],{},[648,1063,1064],{},[616,1065,763],{},[648,1067,1068],{},[616,1069,1070],{},"(input, toolName) => unknown",[648,1072,1073,1074,1076],{},"Custom transform applied before ",[616,1075,759],{},". Use to redact fields or reshape data.",[613,1078,1079,1080,1082,1083,1085,1086,1089],{},"When ",[616,1081,652],{}," is enabled, ",[616,1084,744],{}," becomes an ",[616,1087,1088],{},"Array\u003C{ name, input }>"," instead of a plain string array.",[735,1091,1093],{"id":1092},"prompt-and-output-capture","Prompt and Output Capture",[613,1095,1096,1097,1099,1100,1102],{},"By default, nothing the model was sent or returned reaches your drain. Two independent options turn capture on, one per direction: ",[616,1098,672],{}," records what was sent, ",[616,1101,695],{}," records what came back. Enable one, the other, or both.",[771,1104,1106],{"className":773,"code":1105,"language":775,"meta":776,"style":776},"const ai = createAILogger(log, { prompt: true, output: true })\n",[616,1107,1108],{"__ignoreMap":776},[780,1109,1110,1112,1114,1116,1118,1120,1122,1124,1127,1129,1131,1133,1136,1138,1140,1142],{"class":782,"line":783},[780,1111,787],{"class":786},[780,1113,791],{"class":790},[780,1115,795],{"class":794},[780,1117,799],{"class":798},[780,1119,802],{"class":790},[780,1121,805],{"class":794},[780,1123,808],{"class":794},[780,1125,1126],{"class":811}," prompt",[780,1128,815],{"class":794},[780,1130,819],{"class":818},[780,1132,805],{"class":794},[780,1134,1135],{"class":811}," output",[780,1137,815],{"class":794},[780,1139,819],{"class":818},[780,1141,822],{"class":794},[780,1143,825],{"class":790},[613,1145,1146],{},"The wide event then carries:",[1148,1149,1150,1173],"ul",{},[1151,1152,1153,1155,1156,1160,1161,1164,1165,1168,1169,1172],"li",{},[616,1154,687],{},": the formatted text of the prompt sent to the ",[1157,1158,1159],"strong",{},"first"," model call. One block per message prefixed with its role; text parts are inlined, and other part types become ",[616,1162,1163],{},"[tool-call name]",", ",[616,1166,1167],{},"[tool-result name]"," or ",[616,1170,1171],{},"[file]"," markers.",[1151,1174,1175,1177,1178,1181],{},[616,1176,709],{},": the text generated by the ",[1157,1179,1180],{},"last"," model call, the final answer in a multi-step run. Streamed responses accumulate from the text chunks.",[613,1183,1184],{},"Capture only the direction you need:",[771,1186,1188],{"className":773,"code":1187,"language":775,"meta":776,"style":776},"const ai = createAILogger(log, { prompt: true }) \u002F\u002F ai.prompt only\nconst ai = createAILogger(log, { output: true }) \u002F\u002F ai.output only\n",[616,1189,1190,1220],{"__ignoreMap":776},[780,1191,1192,1194,1196,1198,1200,1202,1204,1206,1208,1210,1212,1214,1216],{"class":782,"line":783},[780,1193,787],{"class":786},[780,1195,791],{"class":790},[780,1197,795],{"class":794},[780,1199,799],{"class":798},[780,1201,802],{"class":790},[780,1203,805],{"class":794},[780,1205,808],{"class":794},[780,1207,1126],{"class":811},[780,1209,815],{"class":794},[780,1211,819],{"class":818},[780,1213,822],{"class":794},[780,1215,977],{"class":790},[780,1217,1219],{"class":1218},"sHwdD","\u002F\u002F ai.prompt only\n",[780,1221,1222,1224,1226,1228,1230,1232,1234,1236,1238,1240,1242,1244,1246],{"class":782,"line":900},[780,1223,787],{"class":786},[780,1225,791],{"class":790},[780,1227,795],{"class":794},[780,1229,799],{"class":798},[780,1231,802],{"class":790},[780,1233,805],{"class":794},[780,1235,808],{"class":794},[780,1237,1135],{"class":811},[780,1239,815],{"class":794},[780,1241,819],{"class":818},[780,1243,822],{"class":794},[780,1245,977],{"class":790},[780,1247,1248],{"class":1218},"\u002F\u002F ai.output only\n",[754,1250,1251,1252,760,1254,764],{},"Prompts and outputs can be large, and they carry whatever your users typed. Reach for ",[616,1253,759],{},[616,1255,763],{},[766,1257,1259],{"id":1258},"truncate-long-content","Truncate long content",[613,1261,1262,1263,815],{},"Each option takes its own ",[616,1264,759],{},[771,1266,1268],{"className":773,"code":1267,"language":775,"meta":776,"style":776},"const ai = createAILogger(log, { prompt: { maxLength: 500 } })\n",[616,1269,1270],{"__ignoreMap":776},[780,1271,1272,1274,1276,1278,1280,1282,1284,1286,1288,1290,1292,1294,1296,1298,1300,1302],{"class":782,"line":783},[780,1273,787],{"class":786},[780,1275,791],{"class":790},[780,1277,795],{"class":794},[780,1279,799],{"class":798},[780,1281,802],{"class":790},[780,1283,805],{"class":794},[780,1285,808],{"class":794},[780,1287,1126],{"class":811},[780,1289,815],{"class":794},[780,1291,808],{"class":794},[780,1293,859],{"class":811},[780,1295,815],{"class":794},[780,1297,918],{"class":864},[780,1299,822],{"class":794},[780,1301,822],{"class":794},[780,1303,825],{"class":790},[766,1305,1307],{"id":1306},"redact-or-reshape","Redact or reshape",[613,1309,1310,1312,1313,815],{},[616,1311,763],{}," receives the captured text and runs before ",[616,1314,759],{},[771,1316,1318],{"className":773,"code":1317,"language":775,"meta":776,"style":776},"const ai = createAILogger(log, {\n  prompt: {\n    maxLength: 500,\n    transform: text => redact(text),\n  },\n})\n",[616,1319,1320,1336,1345,1355,1374,1378],{"__ignoreMap":776},[780,1321,1322,1324,1326,1328,1330,1332,1334],{"class":782,"line":783},[780,1323,787],{"class":786},[780,1325,791],{"class":790},[780,1327,795],{"class":794},[780,1329,799],{"class":798},[780,1331,802],{"class":790},[780,1333,805],{"class":794},[780,1335,897],{"class":794},[780,1337,1338,1341,1343],{"class":782,"line":900},[780,1339,1340],{"class":811},"  prompt",[780,1342,815],{"class":794},[780,1344,897],{"class":794},[780,1346,1347,1349,1351,1353],{"class":782,"line":910},[780,1348,913],{"class":811},[780,1350,815],{"class":794},[780,1352,918],{"class":864},[780,1354,921],{"class":794},[780,1356,1357,1359,1361,1364,1366,1369,1372],{"class":782,"line":924},[780,1358,927],{"class":798},[780,1360,815],{"class":794},[780,1362,1363],{"class":935}," text",[780,1365,947],{"class":786},[780,1367,1368],{"class":798}," redact",[780,1370,1371],{"class":790},"(text)",[780,1373,921],{"class":794},[780,1375,1376],{"class":782,"line":952},[780,1377,1018],{"class":794},[780,1379,1380,1382],{"class":782,"line":1000},[780,1381,1024],{"class":794},[780,1383,825],{"class":790},[621,1385,1386,1396],{},[624,1387,1388],{},[627,1389,1390,1392,1394],{},[630,1391,1035],{},[630,1393,635],{},[630,1395,641],{},[643,1397,1398,1413],{},[627,1399,1400,1404,1408],{},[648,1401,1402],{},[616,1403,759],{},[648,1405,1406],{},[616,1407,1052],{},[648,1409,1410,1411,1059],{},"Truncate captured text exceeding this character length (appends ",[616,1412,1058],{},[627,1414,1415,1419,1424],{},[648,1416,1417],{},[616,1418,763],{},[648,1420,1421],{},[616,1422,1423],{},"(content) => string",[648,1425,1073,1426,1428],{},[616,1427,759],{},".",[1430,1431,1432,1433,760,1436,1439,1440,1443,1444,760,1446,1448],"note",{},"Prompt and output capture is a middleware capability: it works with ",[616,1434,1435],{},"createAILogger",[616,1437,1438],{},"createAIMiddleware",". The standalone ",[616,1441,1442],{},"createEvlogIntegration"," observes telemetry events and has no access to the model call parameters, so ",[616,1445,687],{},[616,1447,709],{}," stay absent there.",[735,1450,1452],{"id":1451},"cost-estimation","Cost Estimation",[613,1454,1455,1456,1458,1459,1462],{},"Pass a ",[616,1457,716],{}," map to compute estimated dollar cost per call. The middleware multiplies token usage by the per-million rates and sets ",[616,1460,1461],{},"ai.estimatedCost"," on the wide event.",[771,1464,1466],{"className":773,"code":1465,"language":775,"meta":776,"style":776},"const ai = createAILogger(log, {\n  cost: {\n    'claude-sonnet-4.6': { input: 3, output: 15 },\n    'gpt-4o': { input: 2.5, output: 10 },\n  },\n})\n",[616,1467,1468,1484,1493,1527,1558,1562],{"__ignoreMap":776},[780,1469,1470,1472,1474,1476,1478,1480,1482],{"class":782,"line":783},[780,1471,787],{"class":786},[780,1473,791],{"class":790},[780,1475,795],{"class":794},[780,1477,799],{"class":798},[780,1479,802],{"class":790},[780,1481,805],{"class":794},[780,1483,897],{"class":794},[780,1485,1486,1489,1491],{"class":782,"line":900},[780,1487,1488],{"class":811},"  cost",[780,1490,815],{"class":794},[780,1492,897],{"class":794},[780,1494,1495,1498,1501,1503,1505,1507,1510,1512,1515,1517,1519,1521,1524],{"class":782,"line":910},[780,1496,1497],{"class":794},"    '",[780,1499,1500],{"class":811},"claude-sonnet-4.6",[780,1502,974],{"class":794},[780,1504,815],{"class":794},[780,1506,808],{"class":794},[780,1508,1509],{"class":811}," input",[780,1511,815],{"class":794},[780,1513,1514],{"class":864}," 3",[780,1516,805],{"class":794},[780,1518,1135],{"class":811},[780,1520,815],{"class":794},[780,1522,1523],{"class":864}," 15",[780,1525,1526],{"class":794}," },\n",[780,1528,1529,1531,1534,1536,1538,1540,1542,1544,1547,1549,1551,1553,1556],{"class":782,"line":924},[780,1530,1497],{"class":794},[780,1532,1533],{"class":811},"gpt-4o",[780,1535,974],{"class":794},[780,1537,815],{"class":794},[780,1539,808],{"class":794},[780,1541,1509],{"class":811},[780,1543,815],{"class":794},[780,1545,1546],{"class":864}," 2.5",[780,1548,805],{"class":794},[780,1550,1135],{"class":811},[780,1552,815],{"class":794},[780,1554,1555],{"class":864}," 10",[780,1557,1526],{"class":794},[780,1559,1560],{"class":782,"line":952},[780,1561,1018],{"class":794},[780,1563,1564,1566],{"class":782,"line":1000},[780,1565,1024],{"class":794},[780,1567,825],{"class":790},[613,1569,1570,1571,1577],{},"Read the result from your handler with ",[1572,1573,1574],"a",{"href":357},[616,1575,1576],{},"ai.getEstimatedCost()",", which suits billing dashboards or warning users before expensive calls.",[1579,1580,1581,1582,1584],"tip",{},"Keep your ",[616,1583,716],{}," map in one file alongside model selection so renaming a model in production also updates pricing. Per-route maps drift the moment two routes disagree about which model they call, so keep one.",[735,1586,1588],{"id":1587},"error-handling","Error Handling",[613,1590,1591],{},"If a model call fails, the middleware captures the error into the wide event before re-throwing:",[771,1593,1598],{"className":1594,"code":1595,"filename":1596,"language":1597,"meta":776,"style":776},"language-json shiki shiki-themes material-theme-lighter material-theme material-theme-palenight","{\n  \"ai\": {\n    \"calls\": 1,\n    \"model\": \"claude-sonnet-4.6\",\n    \"provider\": \"anthropic\",\n    \"finishReason\": \"error\",\n    \"error\": \"API rate limit exceeded\"\n  }\n}\n","Wide Event","json",[616,1599,1600,1605,1620,1638,1658,1678,1698,1716,1721],{"__ignoreMap":776},[780,1601,1602],{"class":782,"line":783},[780,1603,1604],{"class":794},"{\n",[780,1606,1607,1610,1613,1616,1618],{"class":782,"line":900},[780,1608,1609],{"class":794},"  \"",[780,1611,1612],{"class":786},"ai",[780,1614,1615],{"class":794},"\"",[780,1617,815],{"class":794},[780,1619,897],{"class":794},[780,1621,1622,1625,1629,1631,1633,1636],{"class":782,"line":910},[780,1623,1624],{"class":794},"    \"",[780,1626,1628],{"class":1627},"sBMFI","calls",[780,1630,1615],{"class":794},[780,1632,815],{"class":794},[780,1634,1635],{"class":864}," 1",[780,1637,921],{"class":794},[780,1639,1640,1642,1645,1647,1649,1652,1654,1656],{"class":782,"line":924},[780,1641,1624],{"class":794},[780,1643,1644],{"class":1627},"model",[780,1646,1615],{"class":794},[780,1648,815],{"class":794},[780,1650,1651],{"class":794}," \"",[780,1653,1500],{"class":970},[780,1655,1615],{"class":794},[780,1657,921],{"class":794},[780,1659,1660,1662,1665,1667,1669,1671,1674,1676],{"class":782,"line":952},[780,1661,1624],{"class":794},[780,1663,1664],{"class":1627},"provider",[780,1666,1615],{"class":794},[780,1668,815],{"class":794},[780,1670,1651],{"class":794},[780,1672,1673],{"class":970},"anthropic",[780,1675,1615],{"class":794},[780,1677,921],{"class":794},[780,1679,1680,1682,1685,1687,1689,1691,1694,1696],{"class":782,"line":1000},[780,1681,1624],{"class":794},[780,1683,1684],{"class":1627},"finishReason",[780,1686,1615],{"class":794},[780,1688,815],{"class":794},[780,1690,1651],{"class":794},[780,1692,1693],{"class":970},"error",[780,1695,1615],{"class":794},[780,1697,921],{"class":794},[780,1699,1700,1702,1704,1706,1708,1710,1713],{"class":782,"line":1009},[780,1701,1624],{"class":794},[780,1703,1693],{"class":1627},[780,1705,1615],{"class":794},[780,1707,815],{"class":794},[780,1709,1651],{"class":794},[780,1711,1712],{"class":970},"API rate limit exceeded",[780,1714,1715],{"class":794},"\"\n",[780,1717,1718],{"class":782,"line":1015},[780,1719,1720],{"class":794},"  }\n",[780,1722,1723],{"class":782,"line":1021},[780,1724,1725],{"class":794},"}\n",[613,1727,1728,1729,1732],{},"Stream errors (e.g. content filter) are also captured from the stream's error chunks. 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