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context","\u002Fcompare\u002Fconsola","8.compare\u002F5.consola",{"id":603,"title":346,"body":604,"description":1745,"extension":1746,"links":1747,"meta":1753,"navigation":1754,"path":347,"seo":1755,"stem":348,"__hash__":1756},"docs\u002F5.use-cases\u002F2.ai-sdk\u002F03.options.md",{"type":605,"value":606,"toc":1732},"minimark",[607,615,729,734,748,760,765,821,825,867,871,1022,1072,1085,1089,1098,1139,1142,1177,1180,1244,1251,1255,1260,1299,1303,1310,1379,1424,1444,1448,1458,1563,1573,1580,1584,1587,1721,1728],[608,609,610,614],"p",{},[611,612,613],"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.",[616,617,618,637],"table",{},[619,620,621],"thead",{},[622,623,624,628,631,634],"tr",{},[625,626,627],"th",{},"Option",[625,629,630],{},"Type",[625,632,633],{},"Default",[625,635,636],{},"Description",[638,639,640,661,684,705],"tbody",{},[622,641,642,648,653,658],{},[643,644,645],"td",{},[611,646,647],{},"toolInputs",[643,649,650],{},[611,651,652],{},"boolean | ToolInputsOptions",[643,654,655],{},[611,656,657],{},"false",[643,659,660],{},"Capture tool call inputs alongside their names (off by default to avoid leaking sensitive data).",[622,662,663,668,673,677],{},[643,664,665],{},[611,666,667],{},"prompt",[643,669,670],{},[611,671,672],{},"boolean | CaptureOptions",[643,674,675],{},[611,676,657],{},[643,678,679,680,683],{},"Capture the prompt sent to the first model call as ",[611,681,682],{},"ai.prompt"," (off by default to avoid leaking sensitive data).",[622,685,686,691,695,699],{},[643,687,688],{},[611,689,690],{},"output",[643,692,693],{},[611,694,672],{},[643,696,697],{},[611,698,657],{},[643,700,701,702,683],{},"Capture the text generated by the last model call as ",[611,703,704],{},"ai.output",[622,706,707,712,717,722],{},[643,708,709],{},[611,710,711],{},"cost",[643,713,714],{},[611,715,716],{},"Record\u003Cstring, ModelCost>",[643,718,719],{},[611,720,721],{},"undefined",[643,723,724,725,728],{},"Pricing map. Keys are model IDs, values are ",[611,726,727],{},"{ input, output }"," in dollars per 1M tokens.",[730,731,733],"h2",{"id":732},"tool-inputs","Tool Inputs",[608,735,736,737,740,741,744,745,747],{},"By default, ",[611,738,739],{},"ai.toolCalls"," is a ",[611,742,743],{},"string[]"," of tool names. Enable ",[611,746,647],{}," to capture inputs too, which suits debugging agent behaviour or auditing what data the model reached for.",[749,750,751,752,755,756,759],"warning",{},"Tool inputs get large, and they carry SQL, API keys and customer PII. Reach for ",[611,753,754],{},"maxLength"," and ",[611,757,758],{},"transform"," before raw capture in production.",[761,762,764],"h3",{"id":763},"capture-everything","Capture everything",[766,767,772],"pre",{"className":768,"code":769,"language":770,"meta":771,"style":771},"language-typescript shiki shiki-themes material-theme-lighter material-theme material-theme-palenight","const ai = createAILogger(log, { toolInputs: true })\n","typescript","",[611,773,774],{"__ignoreMap":771},[775,776,779,783,787,791,795,798,801,804,808,811,815,818],"span",{"class":777,"line":778},"line",1,[775,780,782],{"class":781},"spNyl","const",[775,784,786],{"class":785},"sTEyZ"," ai ",[775,788,790],{"class":789},"sMK4o","=",[775,792,794],{"class":793},"s2Zo4"," createAILogger",[775,796,797],{"class":785},"(log",[775,799,800],{"class":789},",",[775,802,803],{"class":789}," {",[775,805,807],{"class":806},"swJcz"," toolInputs",[775,809,810],{"class":789},":",[775,812,814],{"class":813},"sfNiH"," true",[775,816,817],{"class":789}," }",[775,819,820],{"class":785},")\n",[761,822,824],{"id":823},"truncate-long-inputs","Truncate long inputs",[766,826,828],{"className":768,"code":827,"language":770,"meta":771,"style":771},"const ai = createAILogger(log, { toolInputs: { maxLength: 200 } })\n",[611,829,830],{"__ignoreMap":771},[775,831,832,834,836,838,840,842,844,846,848,850,852,855,857,861,863,865],{"class":777,"line":778},[775,833,782],{"class":781},[775,835,786],{"class":785},[775,837,790],{"class":789},[775,839,794],{"class":793},[775,841,797],{"class":785},[775,843,800],{"class":789},[775,845,803],{"class":789},[775,847,807],{"class":806},[775,849,810],{"class":789},[775,851,803],{"class":789},[775,853,854],{"class":806}," maxLength",[775,856,810],{"class":789},[775,858,860],{"class":859},"sbssI"," 200",[775,862,817],{"class":789},[775,864,817],{"class":789},[775,866,820],{"class":785},[761,868,870],{"id":869},"redact-sensitive-fields","Redact sensitive fields",[766,872,874],{"className":768,"code":873,"language":770,"meta":771,"style":771},"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",[611,875,876,893,903,917,945,993,1002,1008,1014],{"__ignoreMap":771},[775,877,878,880,882,884,886,888,890],{"class":777,"line":778},[775,879,782],{"class":781},[775,881,786],{"class":785},[775,883,790],{"class":789},[775,885,794],{"class":793},[775,887,797],{"class":785},[775,889,800],{"class":789},[775,891,892],{"class":789}," {\n",[775,894,896,899,901],{"class":777,"line":895},2,[775,897,898],{"class":806},"  toolInputs",[775,900,810],{"class":789},[775,902,892],{"class":789},[775,904,906,909,911,914],{"class":777,"line":905},3,[775,907,908],{"class":806},"    maxLength",[775,910,810],{"class":789},[775,912,913],{"class":859}," 500",[775,915,916],{"class":789},",\n",[775,918,920,923,925,928,932,934,937,940,943],{"class":777,"line":919},4,[775,921,922],{"class":793},"    transform",[775,924,810],{"class":789},[775,926,927],{"class":789}," (",[775,929,931],{"class":930},"sHdIc","input",[775,933,800],{"class":789},[775,935,936],{"class":930}," toolName",[775,938,939],{"class":789},")",[775,941,942],{"class":781}," =>",[775,944,892],{"class":789},[775,946,948,952,954,957,960,963,967,970,973,976,978,981,983,985,988,990],{"class":777,"line":947},5,[775,949,951],{"class":950},"s7zQu","      if",[775,953,927],{"class":806},[775,955,956],{"class":785},"toolName",[775,958,959],{"class":789}," ===",[775,961,962],{"class":789}," '",[775,964,966],{"class":965},"sfazB","queryDB",[775,968,969],{"class":789},"'",[775,971,972],{"class":806},") ",[775,974,975],{"class":950},"return",[775,977,803],{"class":789},[775,979,980],{"class":806}," sql",[775,982,810],{"class":789},[775,984,962],{"class":789},[775,986,987],{"class":965},"***",[775,989,969],{"class":789},[775,991,992],{"class":789}," }\n",[775,994,996,999],{"class":777,"line":995},6,[775,997,998],{"class":950},"      return",[775,1000,1001],{"class":785}," input\n",[775,1003,1005],{"class":777,"line":1004},7,[775,1006,1007],{"class":789},"    },\n",[775,1009,1011],{"class":777,"line":1010},8,[775,1012,1013],{"class":789},"  },\n",[775,1015,1017,1020],{"class":777,"line":1016},9,[775,1018,1019],{"class":789},"}",[775,1021,820],{"class":785},[616,1023,1024,1035],{},[619,1025,1026],{},[622,1027,1028,1031,1033],{},[625,1029,1030],{},"Sub-option",[625,1032,630],{},[625,1034,636],{},[638,1036,1037,1055],{},[622,1038,1039,1043,1048],{},[643,1040,1041],{},[611,1042,754],{},[643,1044,1045],{},[611,1046,1047],{},"number",[643,1049,1050,1051,1054],{},"Truncate stringified inputs exceeding this character length (appends ",[611,1052,1053],{},"…",").",[622,1056,1057,1061,1066],{},[643,1058,1059],{},[611,1060,758],{},[643,1062,1063],{},[611,1064,1065],{},"(input, toolName) => unknown",[643,1067,1068,1069,1071],{},"Custom transform applied before ",[611,1070,754],{},". Use to redact fields or reshape data.",[608,1073,1074,1075,1077,1078,1080,1081,1084],{},"When ",[611,1076,647],{}," is enabled, ",[611,1079,739],{}," becomes an ",[611,1082,1083],{},"Array\u003C{ name, input }>"," instead of a plain string array.",[730,1086,1088],{"id":1087},"prompt-and-output-capture","Prompt and Output Capture",[608,1090,1091,1092,1094,1095,1097],{},"By default, nothing the model was sent or returned reaches your drain. Two independent options turn capture on, one per direction: ",[611,1093,667],{}," records what was sent, ",[611,1096,690],{}," records what came back. Enable one, the other, or both.",[766,1099,1101],{"className":768,"code":1100,"language":770,"meta":771,"style":771},"const ai = createAILogger(log, { prompt: true, output: true })\n",[611,1102,1103],{"__ignoreMap":771},[775,1104,1105,1107,1109,1111,1113,1115,1117,1119,1122,1124,1126,1128,1131,1133,1135,1137],{"class":777,"line":778},[775,1106,782],{"class":781},[775,1108,786],{"class":785},[775,1110,790],{"class":789},[775,1112,794],{"class":793},[775,1114,797],{"class":785},[775,1116,800],{"class":789},[775,1118,803],{"class":789},[775,1120,1121],{"class":806}," prompt",[775,1123,810],{"class":789},[775,1125,814],{"class":813},[775,1127,800],{"class":789},[775,1129,1130],{"class":806}," output",[775,1132,810],{"class":789},[775,1134,814],{"class":813},[775,1136,817],{"class":789},[775,1138,820],{"class":785},[608,1140,1141],{},"The wide event then carries:",[1143,1144,1145,1168],"ul",{},[1146,1147,1148,1150,1151,1155,1156,1159,1160,1163,1164,1167],"li",{},[611,1149,682],{},": the formatted text of the prompt sent to the ",[1152,1153,1154],"strong",{},"first"," model call. One block per message prefixed with its role; text parts are inlined, and other part types become ",[611,1157,1158],{},"[tool-call name]",", ",[611,1161,1162],{},"[tool-result name]"," or ",[611,1165,1166],{},"[file]"," markers.",[1146,1169,1170,1172,1173,1176],{},[611,1171,704],{},": the text generated by the ",[1152,1174,1175],{},"last"," model call, the final answer in a multi-step run. Streamed responses accumulate from the text chunks.",[608,1178,1179],{},"Capture only the direction you need:",[766,1181,1183],{"className":768,"code":1182,"language":770,"meta":771,"style":771},"const ai = createAILogger(log, { prompt: true }) \u002F\u002F ai.prompt only\nconst ai = createAILogger(log, { output: true }) \u002F\u002F ai.output only\n",[611,1184,1185,1215],{"__ignoreMap":771},[775,1186,1187,1189,1191,1193,1195,1197,1199,1201,1203,1205,1207,1209,1211],{"class":777,"line":778},[775,1188,782],{"class":781},[775,1190,786],{"class":785},[775,1192,790],{"class":789},[775,1194,794],{"class":793},[775,1196,797],{"class":785},[775,1198,800],{"class":789},[775,1200,803],{"class":789},[775,1202,1121],{"class":806},[775,1204,810],{"class":789},[775,1206,814],{"class":813},[775,1208,817],{"class":789},[775,1210,972],{"class":785},[775,1212,1214],{"class":1213},"sHwdD","\u002F\u002F ai.prompt only\n",[775,1216,1217,1219,1221,1223,1225,1227,1229,1231,1233,1235,1237,1239,1241],{"class":777,"line":895},[775,1218,782],{"class":781},[775,1220,786],{"class":785},[775,1222,790],{"class":789},[775,1224,794],{"class":793},[775,1226,797],{"class":785},[775,1228,800],{"class":789},[775,1230,803],{"class":789},[775,1232,1130],{"class":806},[775,1234,810],{"class":789},[775,1236,814],{"class":813},[775,1238,817],{"class":789},[775,1240,972],{"class":785},[775,1242,1243],{"class":1213},"\u002F\u002F ai.output only\n",[749,1245,1246,1247,755,1249,759],{},"Prompts and outputs can be large, and they carry whatever your users typed. Reach for ",[611,1248,754],{},[611,1250,758],{},[761,1252,1254],{"id":1253},"truncate-long-content","Truncate long content",[608,1256,1257,1258,810],{},"Each option takes its own ",[611,1259,754],{},[766,1261,1263],{"className":768,"code":1262,"language":770,"meta":771,"style":771},"const ai = createAILogger(log, { prompt: { maxLength: 500 } })\n",[611,1264,1265],{"__ignoreMap":771},[775,1266,1267,1269,1271,1273,1275,1277,1279,1281,1283,1285,1287,1289,1291,1293,1295,1297],{"class":777,"line":778},[775,1268,782],{"class":781},[775,1270,786],{"class":785},[775,1272,790],{"class":789},[775,1274,794],{"class":793},[775,1276,797],{"class":785},[775,1278,800],{"class":789},[775,1280,803],{"class":789},[775,1282,1121],{"class":806},[775,1284,810],{"class":789},[775,1286,803],{"class":789},[775,1288,854],{"class":806},[775,1290,810],{"class":789},[775,1292,913],{"class":859},[775,1294,817],{"class":789},[775,1296,817],{"class":789},[775,1298,820],{"class":785},[761,1300,1302],{"id":1301},"redact-or-reshape","Redact or reshape",[608,1304,1305,1307,1308,810],{},[611,1306,758],{}," receives the captured text and runs before ",[611,1309,754],{},[766,1311,1313],{"className":768,"code":1312,"language":770,"meta":771,"style":771},"const ai = createAILogger(log, {\n  prompt: {\n    maxLength: 500,\n    transform: text => redact(text),\n  },\n})\n",[611,1314,1315,1331,1340,1350,1369,1373],{"__ignoreMap":771},[775,1316,1317,1319,1321,1323,1325,1327,1329],{"class":777,"line":778},[775,1318,782],{"class":781},[775,1320,786],{"class":785},[775,1322,790],{"class":789},[775,1324,794],{"class":793},[775,1326,797],{"class":785},[775,1328,800],{"class":789},[775,1330,892],{"class":789},[775,1332,1333,1336,1338],{"class":777,"line":895},[775,1334,1335],{"class":806},"  prompt",[775,1337,810],{"class":789},[775,1339,892],{"class":789},[775,1341,1342,1344,1346,1348],{"class":777,"line":905},[775,1343,908],{"class":806},[775,1345,810],{"class":789},[775,1347,913],{"class":859},[775,1349,916],{"class":789},[775,1351,1352,1354,1356,1359,1361,1364,1367],{"class":777,"line":919},[775,1353,922],{"class":793},[775,1355,810],{"class":789},[775,1357,1358],{"class":930}," text",[775,1360,942],{"class":781},[775,1362,1363],{"class":793}," redact",[775,1365,1366],{"class":785},"(text)",[775,1368,916],{"class":789},[775,1370,1371],{"class":777,"line":947},[775,1372,1013],{"class":789},[775,1374,1375,1377],{"class":777,"line":995},[775,1376,1019],{"class":789},[775,1378,820],{"class":785},[616,1380,1381,1391],{},[619,1382,1383],{},[622,1384,1385,1387,1389],{},[625,1386,1030],{},[625,1388,630],{},[625,1390,636],{},[638,1392,1393,1408],{},[622,1394,1395,1399,1403],{},[643,1396,1397],{},[611,1398,754],{},[643,1400,1401],{},[611,1402,1047],{},[643,1404,1405,1406,1054],{},"Truncate captured text exceeding this character length (appends ",[611,1407,1053],{},[622,1409,1410,1414,1419],{},[643,1411,1412],{},[611,1413,758],{},[643,1415,1416],{},[611,1417,1418],{},"(content) => string",[643,1420,1068,1421,1423],{},[611,1422,754],{},".",[1425,1426,1427,1428,755,1431,1434,1435,1438,1439,755,1441,1443],"note",{},"Prompt and output capture is a middleware capability: it works with ",[611,1429,1430],{},"createAILogger",[611,1432,1433],{},"createAIMiddleware",". The standalone ",[611,1436,1437],{},"createEvlogIntegration"," observes telemetry events and has no access to the model call parameters, so ",[611,1440,682],{},[611,1442,704],{}," stay absent there.",[730,1445,1447],{"id":1446},"cost-estimation","Cost Estimation",[608,1449,1450,1451,1453,1454,1457],{},"Pass a ",[611,1452,711],{}," map to compute estimated dollar cost per call. The middleware multiplies token usage by the per-million rates and sets ",[611,1455,1456],{},"ai.estimatedCost"," on the wide event.",[766,1459,1461],{"className":768,"code":1460,"language":770,"meta":771,"style":771},"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",[611,1462,1463,1479,1488,1522,1553,1557],{"__ignoreMap":771},[775,1464,1465,1467,1469,1471,1473,1475,1477],{"class":777,"line":778},[775,1466,782],{"class":781},[775,1468,786],{"class":785},[775,1470,790],{"class":789},[775,1472,794],{"class":793},[775,1474,797],{"class":785},[775,1476,800],{"class":789},[775,1478,892],{"class":789},[775,1480,1481,1484,1486],{"class":777,"line":895},[775,1482,1483],{"class":806},"  cost",[775,1485,810],{"class":789},[775,1487,892],{"class":789},[775,1489,1490,1493,1496,1498,1500,1502,1505,1507,1510,1512,1514,1516,1519],{"class":777,"line":905},[775,1491,1492],{"class":789},"    '",[775,1494,1495],{"class":806},"claude-sonnet-4.6",[775,1497,969],{"class":789},[775,1499,810],{"class":789},[775,1501,803],{"class":789},[775,1503,1504],{"class":806}," input",[775,1506,810],{"class":789},[775,1508,1509],{"class":859}," 3",[775,1511,800],{"class":789},[775,1513,1130],{"class":806},[775,1515,810],{"class":789},[775,1517,1518],{"class":859}," 15",[775,1520,1521],{"class":789}," },\n",[775,1523,1524,1526,1529,1531,1533,1535,1537,1539,1542,1544,1546,1548,1551],{"class":777,"line":919},[775,1525,1492],{"class":789},[775,1527,1528],{"class":806},"gpt-4o",[775,1530,969],{"class":789},[775,1532,810],{"class":789},[775,1534,803],{"class":789},[775,1536,1504],{"class":806},[775,1538,810],{"class":789},[775,1540,1541],{"class":859}," 2.5",[775,1543,800],{"class":789},[775,1545,1130],{"class":806},[775,1547,810],{"class":789},[775,1549,1550],{"class":859}," 10",[775,1552,1521],{"class":789},[775,1554,1555],{"class":777,"line":947},[775,1556,1013],{"class":789},[775,1558,1559,1561],{"class":777,"line":995},[775,1560,1019],{"class":789},[775,1562,820],{"class":785},[608,1564,1565,1566,1572],{},"Read the result from your handler with ",[1567,1568,1569],"a",{"href":352},[611,1570,1571],{},"ai.getEstimatedCost()",", which suits billing dashboards or warning users before expensive calls.",[1574,1575,1576,1577,1579],"tip",{},"Keep your ",[611,1578,711],{}," 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.",[730,1581,1583],{"id":1582},"error-handling","Error Handling",[608,1585,1586],{},"If a model call fails, the middleware captures the error into the wide event before re-throwing:",[766,1588,1593],{"className":1589,"code":1590,"filename":1591,"language":1592,"meta":771,"style":771},"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",[611,1594,1595,1600,1615,1633,1653,1673,1693,1711,1716],{"__ignoreMap":771},[775,1596,1597],{"class":777,"line":778},[775,1598,1599],{"class":789},"{\n",[775,1601,1602,1605,1608,1611,1613],{"class":777,"line":895},[775,1603,1604],{"class":789},"  \"",[775,1606,1607],{"class":781},"ai",[775,1609,1610],{"class":789},"\"",[775,1612,810],{"class":789},[775,1614,892],{"class":789},[775,1616,1617,1620,1624,1626,1628,1631],{"class":777,"line":905},[775,1618,1619],{"class":789},"    \"",[775,1621,1623],{"class":1622},"sBMFI","calls",[775,1625,1610],{"class":789},[775,1627,810],{"class":789},[775,1629,1630],{"class":859}," 1",[775,1632,916],{"class":789},[775,1634,1635,1637,1640,1642,1644,1647,1649,1651],{"class":777,"line":919},[775,1636,1619],{"class":789},[775,1638,1639],{"class":1622},"model",[775,1641,1610],{"class":789},[775,1643,810],{"class":789},[775,1645,1646],{"class":789}," \"",[775,1648,1495],{"class":965},[775,1650,1610],{"class":789},[775,1652,916],{"class":789},[775,1654,1655,1657,1660,1662,1664,1666,1669,1671],{"class":777,"line":947},[775,1656,1619],{"class":789},[775,1658,1659],{"class":1622},"provider",[775,1661,1610],{"class":789},[775,1663,810],{"class":789},[775,1665,1646],{"class":789},[775,1667,1668],{"class":965},"anthropic",[775,1670,1610],{"class":789},[775,1672,916],{"class":789},[775,1674,1675,1677,1680,1682,1684,1686,1689,1691],{"class":777,"line":995},[775,1676,1619],{"class":789},[775,1678,1679],{"class":1622},"finishReason",[775,1681,1610],{"class":789},[775,1683,810],{"class":789},[775,1685,1646],{"class":789},[775,1687,1688],{"class":965},"error",[775,1690,1610],{"class":789},[775,1692,916],{"class":789},[775,1694,1695,1697,1699,1701,1703,1705,1708],{"class":777,"line":1004},[775,1696,1619],{"class":789},[775,1698,1688],{"class":1622},[775,1700,1610],{"class":789},[775,1702,810],{"class":789},[775,1704,1646],{"class":789},[775,1706,1707],{"class":965},"API rate limit exceeded",[775,1709,1710],{"class":789},"\"\n",[775,1712,1713],{"class":777,"line":1010},[775,1714,1715],{"class":789},"  }\n",[775,1717,1718],{"class":777,"line":1016},[775,1719,1720],{"class":789},"}\n",[608,1722,1723,1724,1727],{},"Stream errors (e.g. content filter) are also captured from the stream's error chunks. 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