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Install",[669,670,671,699,715,731],"code-group",{},[672,673,679],"pre",{"className":674,"code":675,"filename":676,"language":677,"meta":678,"style":678},"language-bash shiki shiki-themes material-theme-lighter material-theme material-theme-palenight","pnpm add evlog eve\n","pnpm","bash","",[535,680,681],{"__ignoreMap":678},[682,683,686,689,693,696],"span",{"class":684,"line":685},"line",1,[682,687,676],{"class":688},"sBMFI",[682,690,692],{"class":691},"sfazB"," add",[682,694,695],{"class":691}," evlog",[682,697,698],{"class":691}," eve\n",[672,700,703],{"className":674,"code":701,"filename":702,"language":677,"meta":678,"style":678},"bun add evlog eve\n","bun",[535,704,705],{"__ignoreMap":678},[682,706,707,709,711,713],{"class":684,"line":685},[682,708,702],{"class":688},[682,710,692],{"class":691},[682,712,695],{"class":691},[682,714,698],{"class":691},[672,716,719],{"className":674,"code":717,"filename":718,"language":677,"meta":678,"style":678},"yarn add evlog eve\n","yarn",[535,720,721],{"__ignoreMap":678},[682,722,723,725,727,729],{"class":684,"line":685},[682,724,718],{"class":688},[682,726,692],{"class":691},[682,728,695],{"class":691},[682,730,698],{"class":691},[672,732,735],{"className":674,"code":733,"filename":734,"language":677,"meta":678,"style":678},"npm install evlog eve\n","npm",[535,736,737],{"__ignoreMap":678},[682,738,739,741,744,746],{"class":684,"line":685},[682,740,734],{"class":688},[682,742,743],{"class":691}," install",[682,745,695],{"class":691},[682,747,698],{"class":691},[664,749,751],{"id":750},"_2-add-the-hook","2. Add the hook",[516,753,754,755,758],{},"Create ",[535,756,757],{},"agent\u002Fhooks\u002Fevlog.ts",":",[672,760,764],{"className":761,"code":762,"filename":757,"language":763,"meta":678,"style":678},"language-typescript shiki shiki-themes material-theme-lighter material-theme material-theme-palenight","import { defineEvlogHook } from 'evlog\u002Feve'\nimport { createAxiomDrain } from 'evlog\u002Faxiom'\n\nexport default defineEvlogHook({\n  init: { env: { service: 'my-agent' } },\n  drain: createAxiomDrain(),\n  enrich: (ctx) => {\n    ctx.event.region = process.env.VERCEL_REGION\n  },\n})\n","typescript",[535,765,766,794,815,822,840,876,892,917,950,956],{"__ignoreMap":678},[682,767,768,772,776,780,783,786,789,791],{"class":684,"line":685},[682,769,771],{"class":770},"s7zQu","import",[682,773,775],{"class":774},"sMK4o"," {",[682,777,779],{"class":778},"sTEyZ"," defineEvlogHook",[682,781,782],{"class":774}," }",[682,784,785],{"class":770}," from",[682,787,788],{"class":774}," '",[682,790,541],{"class":691},[682,792,793],{"class":774},"'\n",[682,795,797,799,801,804,806,808,810,813],{"class":684,"line":796},2,[682,798,771],{"class":770},[682,800,775],{"class":774},[682,802,803],{"class":778}," createAxiomDrain",[682,805,782],{"class":774},[682,807,785],{"class":770},[682,809,788],{"class":774},[682,811,812],{"class":691},"evlog\u002Faxiom",[682,814,793],{"class":774},[682,816,818],{"class":684,"line":817},3,[682,819,821],{"emptyLinePlaceholder":820},true,"\n",[682,823,825,828,831,834,837],{"class":684,"line":824},4,[682,826,827],{"class":770},"export",[682,829,830],{"class":770}," default",[682,832,779],{"class":833},"s2Zo4",[682,835,836],{"class":778},"(",[682,838,839],{"class":774},"{\n",[682,841,843,847,849,851,854,856,858,861,863,865,868,871,873],{"class":684,"line":842},5,[682,844,846],{"class":845},"swJcz","  init",[682,848,758],{"class":774},[682,850,775],{"class":774},[682,852,853],{"class":845}," env",[682,855,758],{"class":774},[682,857,775],{"class":774},[682,859,860],{"class":845}," service",[682,862,758],{"class":774},[682,864,788],{"class":774},[682,866,867],{"class":691},"my-agent",[682,869,870],{"class":774},"'",[682,872,782],{"class":774},[682,874,875],{"class":774}," },\n",[682,877,879,882,884,886,889],{"class":684,"line":878},6,[682,880,881],{"class":845},"  drain",[682,883,758],{"class":774},[682,885,803],{"class":833},[682,887,888],{"class":778},"()",[682,890,891],{"class":774},",\n",[682,893,895,898,900,903,907,910,914],{"class":684,"line":894},7,[682,896,897],{"class":833},"  enrich",[682,899,758],{"class":774},[682,901,902],{"class":774}," (",[682,904,906],{"class":905},"sHdIc","ctx",[682,908,909],{"class":774},")",[682,911,913],{"class":912},"spNyl"," =>",[682,915,916],{"class":774}," {\n",[682,918,920,923,926,929,931,934,937,940,942,945,947],{"class":684,"line":919},8,[682,921,922],{"class":778},"    ctx",[682,924,925],{"class":774},".",[682,927,928],{"class":778},"event",[682,930,925],{"class":774},[682,932,933],{"class":778},"region",[682,935,936],{"class":774}," =",[682,938,939],{"class":778}," process",[682,941,925],{"class":774},[682,943,944],{"class":778},"env",[682,946,925],{"class":774},[682,948,949],{"class":778},"VERCEL_REGION\n",[682,951,953],{"class":684,"line":952},9,[682,954,955],{"class":774},"  },\n",[682,957,959,962],{"class":684,"line":958},10,[682,960,961],{"class":774},"}",[682,963,964],{"class":778},")\n",[516,966,967,968,971,972,975],{},"eve auto-discovers hook files under ",[535,969,970],{},"agent\u002Fhooks\u002F",". No HTTP middleware — the unit of work is an agent ",[526,973,974],{},"turn",", not a request.",[664,977,979],{"id":978},"_3-log-business-context-from-tools","3. Log business context from tools",[516,981,982,985,986,989,990,993,994,997,998,1001,1002,1005],{},[535,983,984],{},"defineEvlogHook()"," binds the turn logger via ",[526,987,988],{},"AsyncLocalStorage"," on ",[535,991,992],{},"turn.started",". Inside tool ",[535,995,996],{},"execute()"," handlers, call ",[535,999,1000],{},"useLogger()"," with no arguments — same ergonomics as ",[535,1003,1004],{},"useLogger(event)"," in Nuxt or Hono.",[516,1007,1008,1009,1014],{},"In the ",[519,1010,1013],{"href":1011,"rel":1012},"https:\u002F\u002Fgithub.com\u002FHugoRCD\u002Fevlog\u002Ftree\u002Fmain\u002Fexamples\u002Feve",[523],"example agent",", support tools attach customer and order context as the agent works a refund:",[672,1016,1019],{"className":761,"code":1017,"filename":1018,"language":763,"meta":678,"style":678},"import { defineTool } from 'eve\u002Ftools'\nimport { useLogger } from 'evlog\u002Feve'\nimport { z } from 'zod'\n\nexport default defineTool({\n  description: 'Look up an order by id.',\n  inputSchema: z.object({ orderId: z.string() }),\n  async execute({ orderId }) {\n    const order = await fetchOrder(orderId)\n    const log = useLogger()\n    log.set({ order: { id: order.id, amount: order.amount, status: order.status } })\n    return order\n  },\n})\n","agent\u002Ftools\u002Flookup_order.ts",[535,1020,1021,1041,1060,1080,1084,1096,1112,1152,1170,1193,1207,1275,1284,1289],{"__ignoreMap":678},[682,1022,1023,1025,1027,1030,1032,1034,1036,1039],{"class":684,"line":685},[682,1024,771],{"class":770},[682,1026,775],{"class":774},[682,1028,1029],{"class":778}," defineTool",[682,1031,782],{"class":774},[682,1033,785],{"class":770},[682,1035,788],{"class":774},[682,1037,1038],{"class":691},"eve\u002Ftools",[682,1040,793],{"class":774},[682,1042,1043,1045,1047,1050,1052,1054,1056,1058],{"class":684,"line":796},[682,1044,771],{"class":770},[682,1046,775],{"class":774},[682,1048,1049],{"class":778}," useLogger",[682,1051,782],{"class":774},[682,1053,785],{"class":770},[682,1055,788],{"class":774},[682,1057,541],{"class":691},[682,1059,793],{"class":774},[682,1061,1062,1064,1066,1069,1071,1073,1075,1078],{"class":684,"line":817},[682,1063,771],{"class":770},[682,1065,775],{"class":774},[682,1067,1068],{"class":778}," z",[682,1070,782],{"class":774},[682,1072,785],{"class":770},[682,1074,788],{"class":774},[682,1076,1077],{"class":691},"zod",[682,1079,793],{"class":774},[682,1081,1082],{"class":684,"line":824},[682,1083,821],{"emptyLinePlaceholder":820},[682,1085,1086,1088,1090,1092,1094],{"class":684,"line":842},[682,1087,827],{"class":770},[682,1089,830],{"class":770},[682,1091,1029],{"class":833},[682,1093,836],{"class":778},[682,1095,839],{"class":774},[682,1097,1098,1101,1103,1105,1108,1110],{"class":684,"line":878},[682,1099,1100],{"class":845},"  description",[682,1102,758],{"class":774},[682,1104,788],{"class":774},[682,1106,1107],{"class":691},"Look up an order by id.",[682,1109,870],{"class":774},[682,1111,891],{"class":774},[682,1113,1114,1117,1119,1121,1123,1126,1128,1131,1134,1136,1138,1140,1143,1146,1148,1150],{"class":684,"line":894},[682,1115,1116],{"class":845},"  inputSchema",[682,1118,758],{"class":774},[682,1120,1068],{"class":778},[682,1122,925],{"class":774},[682,1124,1125],{"class":833},"object",[682,1127,836],{"class":778},[682,1129,1130],{"class":774},"{",[682,1132,1133],{"class":845}," orderId",[682,1135,758],{"class":774},[682,1137,1068],{"class":778},[682,1139,925],{"class":774},[682,1141,1142],{"class":833},"string",[682,1144,1145],{"class":778},"() ",[682,1147,961],{"class":774},[682,1149,909],{"class":778},[682,1151,891],{"class":774},[682,1153,1154,1157,1160,1163,1165,1168],{"class":684,"line":919},[682,1155,1156],{"class":912},"  async",[682,1158,1159],{"class":845}," execute",[682,1161,1162],{"class":774},"({",[682,1164,1133],{"class":905},[682,1166,1167],{"class":774}," })",[682,1169,916],{"class":774},[682,1171,1172,1175,1178,1180,1183,1186,1188,1191],{"class":684,"line":952},[682,1173,1174],{"class":912},"    const",[682,1176,1177],{"class":778}," order",[682,1179,936],{"class":774},[682,1181,1182],{"class":770}," await",[682,1184,1185],{"class":833}," fetchOrder",[682,1187,836],{"class":845},[682,1189,1190],{"class":778},"orderId",[682,1192,964],{"class":845},[682,1194,1195,1197,1200,1202,1204],{"class":684,"line":958},[682,1196,1174],{"class":912},[682,1198,1199],{"class":778}," log",[682,1201,936],{"class":774},[682,1203,1049],{"class":833},[682,1205,1206],{"class":845},"()\n",[682,1208,1210,1213,1215,1218,1220,1222,1224,1226,1228,1231,1233,1235,1237,1240,1243,1246,1248,1250,1252,1255,1257,1260,1262,1264,1266,1269,1271,1273],{"class":684,"line":1209},11,[682,1211,1212],{"class":778},"    log",[682,1214,925],{"class":774},[682,1216,1217],{"class":833},"set",[682,1219,836],{"class":845},[682,1221,1130],{"class":774},[682,1223,1177],{"class":845},[682,1225,758],{"class":774},[682,1227,775],{"class":774},[682,1229,1230],{"class":845}," id",[682,1232,758],{"class":774},[682,1234,1177],{"class":778},[682,1236,925],{"class":774},[682,1238,1239],{"class":778},"id",[682,1241,1242],{"class":774},",",[682,1244,1245],{"class":845}," amount",[682,1247,758],{"class":774},[682,1249,1177],{"class":778},[682,1251,925],{"class":774},[682,1253,1254],{"class":778},"amount",[682,1256,1242],{"class":774},[682,1258,1259],{"class":845}," status",[682,1261,758],{"class":774},[682,1263,1177],{"class":778},[682,1265,925],{"class":774},[682,1267,1268],{"class":778},"status",[682,1270,782],{"class":774},[682,1272,782],{"class":774},[682,1274,964],{"class":845},[682,1276,1278,1281],{"class":684,"line":1277},12,[682,1279,1280],{"class":770},"    return",[682,1282,1283],{"class":778}," order\n",[682,1285,1287],{"class":684,"line":1286},13,[682,1288,955],{"class":774},[682,1290,1292,1294],{"class":684,"line":1291},14,[682,1293,961],{"class":774},[682,1295,964],{"class":778},[548,1297,1299,1302,1303,1305,1306,1308,1309,1312,1313,1315],{"color":1298,"icon":131},"neutral",[526,1300,1301],{},"Fallback:"," if ",[535,1304,1000],{}," throws outside a turn, pass eve tool ",[535,1307,906],{},": ",[535,1310,1311],{},"useLogger(ctx)",". This covers separate hook\u002Ftool bundles or runtimes where AsyncLocalStorage does not propagate. With a standard eve agent layout and ",[535,1314,757],{}," registered, you should not need it.",[664,1317,1319],{"id":1318},"_4-nextjs-web-chat-optional","4. Next.js web chat (optional)",[516,1321,1322,1323,1326,1327,1330,1331,1334,1335,1330,1338,1341,1342,1345,1346,1349,1350,1353,1354,925],{},"Wrap ",[535,1324,1325],{},"next.config.ts"," with ",[535,1328,1329],{},"withEve()"," from ",[535,1332,1333],{},"eve\u002Fnext"," and use ",[535,1336,1337],{},"useEveAgent()",[535,1339,1340],{},"eve\u002Freact"," in your app. eve starts alongside ",[535,1343,1344],{},"next dev"," and proxies ",[535,1347,1348],{},"\u002Feve\u002Fv1\u002F*"," on the same origin — tool calls, approvals, and ",[535,1351,1352],{},"ask_question"," work out of the box. See the ",[519,1355,1013],{"href":1011,"rel":1356},[523],[602,1358,1360],{"id":1359},"wide-event-shape","Wide event shape",[516,1362,1363],{},"Each completed turn emits one event:",[672,1365,1370],{"className":1366,"code":1367,"filename":1368,"language":1369,"meta":678,"style":678},"language-json shiki shiki-themes material-theme-lighter material-theme material-theme-palenight","{\n  \"method\": \"EVE\",\n  \"path\": \"\u002Fsessions\u002Fsess_abc\u002Fturns\u002Fturn_0\",\n  \"status\": 200,\n  \"duration\": \"7.9s\",\n  \"service\": \"clearbill-support-agent\",\n  \"eve\": {\n    \"sessionId\": \"sess_abc\",\n    \"turnId\": \"turn_0\",\n    \"turnSequence\": 0,\n    \"phase\": \"awaiting-approval\",\n    \"sessionTurns\": 1\n  },\n  \"customer\": { \"slug\": \"acme-corp\", \"plan\": \"enterprise\" },\n  \"order\": { \"id\": \"4821\", \"amount\": 890, \"currency\": \"USD\" },\n  \"approval\": { \"status\": \"pending\", \"tool\": \"issue_refund\" },\n  \"ai\": {\n    \"calls\": 2,\n    \"steps\": 2,\n    \"inputTokens\": 11724,\n    \"outputTokens\": 282,\n    \"finishReason\": \"tool-calls\",\n    \"tools\": [\n      { \"name\": \"lookup_customer\", \"durationMs\": 26, \"success\": true },\n      { \"name\": \"lookup_order\", \"durationMs\": 13, \"success\": true }\n    ]\n  }\n}\n","Wide Event — turn awaiting approval","json",[535,1371,1372,1376,1399,1419,1435,1455,1475,1487,1508,1528,1544,1564,1578,1582,1631,1693,1742,1756,1773,1789,1806,1823,1844,1859,1911,1959,1965,1971],{"__ignoreMap":678},[682,1373,1374],{"class":684,"line":685},[682,1375,839],{"class":774},[682,1377,1378,1381,1384,1387,1389,1392,1395,1397],{"class":684,"line":796},[682,1379,1380],{"class":774},"  \"",[682,1382,1383],{"class":912},"method",[682,1385,1386],{"class":774},"\"",[682,1388,758],{"class":774},[682,1390,1391],{"class":774}," 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 }\n",[682,1972,1974],{"class":684,"line":1973},28,[682,1975,1976],{"class":774},"}\n",[516,1978,1979],{},"After approval, the next turn carries the outcome:",[672,1981,1984],{"className":1366,"code":1982,"filename":1983,"language":1369,"meta":678,"style":678},"{\n  \"path\": \"\u002Fsessions\u002Fsess_abc\u002Fturns\u002Fturn_1\",\n  \"eve\": {\n    \"sessionId\": \"sess_abc\",\n    \"turnId\": \"turn_1\",\n    \"turnSequence\": 1,\n    \"sessionTurns\": 2\n  },\n  \"refund\": { \"orderId\": \"4821\", \"amount\": 890, \"status\": \"refunded\" },\n  \"audit\": { \"action\": \"refund.issued\", \"target\": { \"type\": \"order\", \"id\": \"4821\" } },\n  \"approval\": { \"status\": \"approved\", \"tool\": \"issue_refund\" },\n  \"ai\": {\n    \"tools\": [{ \"name\": \"issue_refund\", \"durationMs\": 993, \"success\": true }],\n    \"finishReason\": \"stop\"\n  }\n}\n","Wide Event — refund 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}],\n",[682,2338,2339,2341,2343,2345,2347,2349,2352],{"class":684,"line":1291},[682,2340,1491],{"class":774},[682,2342,1830],{"class":688},[682,2344,1386],{"class":774},[682,2346,758],{"class":774},[682,2348,1391],{"class":774},[682,2350,2351],{"class":691},"stop",[682,2353,2354],{"class":774},"\"\n",[682,2356,2357],{"class":684,"line":1633},[682,2358,1970],{"class":774},[682,2360,2361],{"class":684,"line":1695},[682,2362,1976],{"class":774},[516,2364,2365,2366,2369,2370,2369,2373,2376,2377,2379,2380,2383,2384,2387,2388,2391,2392,2369,2394,2369,2397,2400],{},"Token usage and tool executions are accumulated from eve stream events (",[535,2367,2368],{},"step.completed",", ",[535,2371,2372],{},"actions.requested",[535,2374,2375],{},"action.result","). Business fields set via ",[535,2378,1000],{}," carry across turns in the same session. Link turns in analytics with ",[535,2381,2382],{},"eve.sessionId"," + ",[535,2385,2386],{},"eve.turnSequence"," — each event stays self-contained. ",[535,2389,2390],{},"eve.phase"," is only set for non-routine endings (",[535,2393,1559],{},[535,2395,2396],{},"rejected",[535,2398,2399],{},"failed",").",[602,2402,2404],{"id":2403},"production","Production",[516,2406,2407],{},"Long-running eve agents should disable terminal pretty-printing and use a non-blocking drain:",[672,2409,2411],{"className":761,"code":2410,"filename":757,"language":763,"meta":678,"style":678},"import { defineEvlogHook } from 'evlog\u002Feve'\nimport { createAxiomDrain } from 'evlog\u002Faxiom'\nimport { createDrainPipeline } from 'evlog\u002Fpipeline'\n\nconst drain = createDrainPipeline({ batch: { size: 50, intervalMs: 5000 } })(\n  createAxiomDrain(),\n)\n\nexport default defineEvlogHook({\n  init: {\n    env: { service: 'my-agent', environment: 'production' },\n    pretty: false,\n    sampling: { rates: { info: 10 } },\n  },\n  drain,\n  maxSessions: 256,\n})\n",[535,2412,2413,2431,2449,2469,2473,2522,2531,2535,2539,2551,2559,2593,2606,2634,2638,2644,2656],{"__ignoreMap":678},[682,2414,2415,2417,2419,2421,2423,2425,2427,2429],{"class":684,"line":685},[682,2416,771],{"class":770},[682,2418,775],{"class":774},[682,2420,779],{"class":778},[682,2422,782],{"class":774},[682,2424,785],{"class":770},[682,2426,788],{"class":774},[682,2428,541],{"class":691},[682,2430,793],{"class":774},[682,2432,2433,2435,2437,2439,2441,2443,2445,2447],{"class":684,"line":796},[682,2434,771],{"class":770},[682,2436,775],{"class":774},[682,2438,803],{"class":778},[682,2440,782],{"class":774},[682,2442,785],{"class":770},[682,2444,788],{"class":774},[682,2446,812],{"class":691},[682,2448,793],{"class":774},[682,2450,2451,2453,2455,2458,2460,2462,2464,2467],{"class":684,"line":817},[682,2452,771],{"class":770},[682,2454,775],{"class":774},[682,2456,2457],{"class":778}," createDrainPipeline",[682,2459,782],{"class":774},[682,2461,785],{"class":770},[682,2463,788],{"class":774},[682,2465,2466],{"class":691},"evlog\u002Fpipeline",[682,2468,793],{"class":774},[682,2470,2471],{"class":684,"line":824},[682,2472,821],{"emptyLinePlaceholder":820},[682,2474,2475,2478,2481,2484,2486,2488,2490,2493,2495,2497,2500,2502,2505,2507,2510,2512,2515,2517,2519],{"class":684,"line":842},[682,2476,2477],{"class":912},"const",[682,2479,2480],{"class":778}," drain ",[682,2482,2483],{"class":774},"=",[682,2485,2457],{"class":833},[682,2487,836],{"class":778},[682,2489,1130],{"class":774},[682,2491,2492],{"class":845}," batch",[682,2494,758],{"class":774},[682,2496,775],{"class":774},[682,2498,2499],{"class":845}," size",[682,2501,758],{"class":774},[682,2503,2504],{"class":1431}," 50",[682,2506,1242],{"class":774},[682,2508,2509],{"class":845}," intervalMs",[682,2511,758],{"class":774},[682,2513,2514],{"class":1431}," 5000",[682,2516,782],{"class":774},[682,2518,782],{"class":774},[682,2520,2521],{"class":778},")(\n",[682,2523,2524,2527,2529],{"class":684,"line":878},[682,2525,2526],{"class":833},"  createAxiomDrain",[682,2528,888],{"class":778},[682,2530,891],{"class":774},[682,2532,2533],{"class":684,"line":894},[682,2534,964],{"class":778},[682,2536,2537],{"class":684,"line":919},[682,2538,821],{"emptyLinePlaceholder":820},[682,2540,2541,2543,2545,2547,2549],{"class":684,"line":952},[682,2542,827],{"class":770},[682,2544,830],{"class":770},[682,2546,779],{"class":833},[682,2548,836],{"class":778},[682,2550,839],{"class":774},[682,2552,2553,2555,2557],{"class":684,"line":958},[682,2554,846],{"class":845},[682,2556,758],{"class":774},[682,2558,916],{"class":774},[682,2560,2561,2564,2566,2568,2570,2572,2574,2576,2578,2580,2583,2585,2587,2589,2591],{"class":684,"line":1209},[682,2562,2563],{"class":845},"    env",[682,2565,758],{"class":774},[682,2567,775],{"class":774},[682,2569,860],{"class":845},[682,2571,758],{"class":774},[682,2573,788],{"class":774},[682,2575,867],{"class":691},[682,2577,870],{"class":774},[682,2579,1242],{"class":774},[682,2581,2582],{"class":845}," environment",[682,2584,758],{"class":774},[682,2586,788],{"class":774},[682,2588,2403],{"class":691},[682,2590,870],{"class":774},[682,2592,875],{"class":774},[682,2594,2595,2598,2600,2604],{"class":684,"line":1277},[682,2596,2597],{"class":845},"    pretty",[682,2599,758],{"class":774},[682,2601,2603],{"class":2602},"sfNiH"," false",[682,2605,891],{"class":774},[682,2607,2608,2611,2613,2615,2618,2620,2622,2625,2627,2630,2632],{"class":684,"line":1286},[682,2609,2610],{"class":845},"    sampling",[682,2612,758],{"class":774},[682,2614,775],{"class":774},[682,2616,2617],{"class":845}," rates",[682,2619,758],{"class":774},[682,2621,775],{"class":774},[682,2623,2624],{"class":845}," info",[682,2626,758],{"class":774},[682,2628,2629],{"class":1431}," 10",[682,2631,782],{"class":774},[682,2633,875],{"class":774},[682,2635,2636],{"class":684,"line":1291},[682,2637,955],{"class":774},[682,2639,2640,2642],{"class":684,"line":1633},[682,2641,881],{"class":778},[682,2643,891],{"class":774},[682,2645,2646,2649,2651,2654],{"class":684,"line":1695},[682,2647,2648],{"class":845},"  maxSessions",[682,2650,758],{"class":774},[682,2652,2653],{"class":1431}," 256",[682,2655,891],{"class":774},[682,2657,2658,2660],{"class":684,"line":1744},[682,2659,961],{"class":774},[682,2661,964],{"class":778},[607,2663,2664,2674],{},[610,2665,2666],{},[613,2667,2668,2671],{},[616,2669,2670],{},"Concern",[616,2672,2673],{},"Recommendation",[623,2675,2676,2687,2695,2706,2720],{},[613,2677,2678,2681],{},[628,2679,2680],{},"Terminal output",[628,2682,2683,2686],{},[535,2684,2685],{},"init.pretty: false"," — pretty-print is for local dev only",[613,2688,2689,2692],{},[628,2690,2691],{},"Drain latency",[628,2693,2694],{},"Batch or async HTTP drains; never block the turn on I\u002FO",[613,2696,2697,2700],{},[628,2698,2699],{},"Head sampling",[628,2701,2702,2705],{},[535,2703,2704],{},"init.sampling.rates"," — eve emits one event per turn, not per token",[613,2707,2708,2710],{},[628,2709,196],{},[628,2711,2712,2715,2716,2719],{},[535,2713,2714],{},"maxSessions"," (default ",[535,2717,2718],{},"256",") evicts oldest idle session state",[613,2721,2722,2725],{},[628,2723,2724],{},"Load",[628,2726,2727],{},"Hook handlers are O(1) per stream event; cost is dominated by your drain",[602,2729,321],{"id":2730},"options",[607,2732,2733,2743],{},[610,2734,2735],{},[613,2736,2737,2740],{},[616,2738,2739],{},"Option",[616,2741,2742],{},"Description",[623,2744,2745,2758,2780,2794,2817,2828],{},[613,2746,2747,2751],{},[628,2748,2749],{},[535,2750,89],{},[628,2752,2753,2754,2757],{},"Passed to ",[535,2755,2756],{},"initLogger()"," on first hook invocation",[613,2759,2760,2775],{},[628,2761,2762,2765,2766,2765,2769,2765,2772],{},[535,2763,2764],{},"drain"," \u002F ",[535,2767,2768],{},"enrich",[535,2770,2771],{},"keep",[535,2773,2774],{},"plugins",[628,2776,2777,2778,909],{},"Same as HTTP integrations (",[519,2779,2774],{"href":455},[613,2781,2782,2787],{},[628,2783,2784],{},[535,2785,2786],{},"redactMessage",[628,2788,2789,2790,2793],{},"Default ",[535,2791,2792],{},"true"," — omits user message text from the wide event",[613,2795,2796,2804],{},[628,2797,2798,2765,2801],{},[535,2799,2800],{},"cost",[535,2802,2803],{},"model",[628,2805,2806,2807,1330,2810,2813,2814],{},"Optional token pricing (",[535,2808,2809],{},"ModelCost",[535,2811,2812],{},"evlog\u002Fai",") → ",[535,2815,2816],{},"ai.estimatedCost",[613,2818,2819,2823],{},[628,2820,2821],{},[535,2822,2714],{},[628,2824,2825,2826,909],{},"In-memory session cap for context carry-over (default ",[535,2827,2718],{},[613,2829,2830,2838],{},[628,2831,2832,2765,2835],{},[535,2833,2834],{},"include",[535,2836,2837],{},"exclude",[628,2839,2840,2841,909],{},"Route-style filters on turn paths (",[535,2842,2843],{},"\u002Fsessions\u002F*\u002Fturns\u002F*",[602,2845,462],{"id":2846},"tail-sampling",[516,2848,2849,2850,2852],{},"Use ",[535,2851,2771],{}," to force-keep turns with failed tools or high token usage:",[672,2854,2856],{"className":761,"code":2855,"filename":757,"language":763,"meta":678,"style":678},"export default defineEvlogHook({\n  drain: createAxiomDrain(),\n  keep: (ctx) => {\n    const ai = ctx.context.ai as {\n      inputTokens?: number\n      outputTokens?: number\n      tools?: Array\u003C{ success: boolean }>\n    } | undefined\n    const totalTokens = (ai?.inputTokens ?? 0) + (ai?.outputTokens ?? 0)\n    if (totalTokens > 10_000) ctx.shouldKeep = true\n    if (ai?.tools?.some(t => !t.success)) ctx.shouldKeep = true\n  },\n})\n",[535,2857,2858,2870,2882,2899,2925,2936,2945,2969,2980,3023,3053,3099,3103],{"__ignoreMap":678},[682,2859,2860,2862,2864,2866,2868],{"class":684,"line":685},[682,2861,827],{"class":770},[682,2863,830],{"class":770},[682,2865,779],{"class":833},[682,2867,836],{"class":778},[682,2869,839],{"class":774},[682,2871,2872,2874,2876,2878,2880],{"class":684,"line":796},[682,2873,881],{"class":845},[682,2875,758],{"class":774},[682,2877,803],{"class":833},[682,2879,888],{"class":778},[682,2881,891],{"class":774},[682,2883,2884,2887,2889,2891,2893,2895,2897],{"class":684,"line":817},[682,2885,2886],{"class":833},"  keep",[682,2888,758],{"class":774},[682,2890,902],{"class":774},[682,2892,906],{"class":905},[682,2894,909],{"class":774},[682,2896,913],{"class":912},[682,2898,916],{"class":774},[682,2900,2901,2903,2906,2908,2911,2913,2916,2918,2920,2923],{"class":684,"line":824},[682,2902,1174],{"class":912},[682,2904,2905],{"class":778}," ai",[682,2907,936],{"class":774},[682,2909,2910],{"class":778}," ctx",[682,2912,925],{"class":774},[682,2914,2915],{"class":778},"context",[682,2917,925],{"class":774},[682,2919,1749],{"class":778},[682,2921,2922],{"class":770}," as",[682,2924,916],{"class":774},[682,2926,2927,2930,2933],{"class":684,"line":842},[682,2928,2929],{"class":845},"      inputTokens",[682,2931,2932],{"class":774},"?:",[682,2934,2935],{"class":688}," number\n",[682,2937,2938,2941,2943],{"class":684,"line":878},[682,2939,2940],{"class":845},"      outputTokens",[682,2942,2932],{"class":774},[682,2944,2935],{"class":688},[682,2946,2947,2950,2952,2955,2958,2961,2963,2966],{"class":684,"line":894},[682,2948,2949],{"class":845},"      tools",[682,2951,2932],{"class":774},[682,2953,2954],{"class":688}," Array",[682,2956,2957],{"class":774},"\u003C{",[682,2959,2960],{"class":845}," success",[682,2962,758],{"class":774},[682,2964,2965],{"class":688}," boolean",[682,2967,2968],{"class":774}," }>\n",[682,2970,2971,2974,2977],{"class":684,"line":919},[682,2972,2973],{"class":774},"    }",[682,2975,2976],{"class":774}," |",[682,2978,2979],{"class":688}," undefined\n",[682,2981,2982,2984,2987,2989,2991,2993,2996,2998,3001,3003,3006,3009,3011,3013,3015,3017,3019,3021],{"class":684,"line":952},[682,2983,1174],{"class":912},[682,2985,2986],{"class":778}," totalTokens",[682,2988,936],{"class":774},[682,2990,902],{"class":845},[682,2992,1749],{"class":778},[682,2994,2995],{"class":774},"?.",[682,2997,1796],{"class":778},[682,2999,3000],{"class":774}," ??",[682,3002,1541],{"class":1431},[682,3004,3005],{"class":845},") ",[682,3007,3008],{"class":774},"+",[682,3010,902],{"class":845},[682,3012,1749],{"class":778},[682,3014,2995],{"class":774},[682,3016,1813],{"class":778},[682,3018,3000],{"class":774},[682,3020,1541],{"class":1431},[682,3022,964],{"class":845},[682,3024,3025,3028,3030,3033,3036,3039,3041,3043,3045,3048,3050],{"class":684,"line":958},[682,3026,3027],{"class":770},"    if",[682,3029,902],{"class":845},[682,3031,3032],{"class":778},"totalTokens",[682,3034,3035],{"class":774}," >",[682,3037,3038],{"class":1431}," 10_000",[682,3040,3005],{"class":845},[682,3042,906],{"class":778},[682,3044,925],{"class":774},[682,3046,3047],{"class":778},"shouldKeep",[682,3049,936],{"class":774},[682,3051,3052],{"class":2602}," true\n",[682,3054,3055,3057,3059,3061,3063,3065,3067,3070,3072,3075,3077,3080,3082,3084,3086,3089,3091,3093,3095,3097],{"class":684,"line":1209},[682,3056,3027],{"class":770},[682,3058,902],{"class":845},[682,3060,1749],{"class":778},[682,3062,2995],{"class":774},[682,3064,1851],{"class":778},[682,3066,2995],{"class":774},[682,3068,3069],{"class":833},"some",[682,3071,836],{"class":845},[682,3073,3074],{"class":905},"t",[682,3076,913],{"class":912},[682,3078,3079],{"class":774}," !",[682,3081,3074],{"class":778},[682,3083,925],{"class":774},[682,3085,1901],{"class":778},[682,3087,3088],{"class":845},")) ",[682,3090,906],{"class":778},[682,3092,925],{"class":774},[682,3094,3047],{"class":778},[682,3096,936],{"class":774},[682,3098,3052],{"class":2602},[682,3100,3101],{"class":684,"line":1277},[682,3102,955],{"class":774},[682,3104,3105,3107],{"class":684,"line":1286},[682,3106,961],{"class":774},[682,3108,964],{"class":778},[602,3110,3112],{"id":3111},"audit-logs","Audit logs",[516,3114,3115,3116,3118,3119,3122,3123,3126,3127,3130,3131,1326,3133,925],{},"Combine with ",[519,3117,363],{"href":369},": register ",[535,3120,3121],{},"auditEnricher()"," via ",[535,3124,3125],{},"init.plugins"," or a global plugin, and call ",[535,3128,3129],{},"log.audit()"," inside tools when a human approval gate fires. Tool rejections surface on ",[535,3132,2375],{},[535,3134,3135],{},"status: \"rejected\"",[602,3137,3139],{"id":3138},"run-locally","Run locally",[672,3141,3143],{"className":674,"code":3142,"language":677,"meta":678,"style":678},"git clone https:\u002F\u002Fgithub.com\u002FHugoRCD\u002Fevlog\ncd evlog\npnpm install\npnpm run example:eve\n",[535,3144,3145,3156,3164,3171],{"__ignoreMap":678},[682,3146,3147,3150,3153],{"class":684,"line":685},[682,3148,3149],{"class":688},"git",[682,3151,3152],{"class":691}," clone",[682,3154,3155],{"class":691}," https:\u002F\u002Fgithub.com\u002FHugoRCD\u002Fevlog\n",[682,3157,3158,3161],{"class":684,"line":796},[682,3159,3160],{"class":833},"cd",[682,3162,3163],{"class":691}," evlog\n",[682,3165,3166,3168],{"class":684,"line":817},[682,3167,676],{"class":688},[682,3169,3170],{"class":691}," install\n",[682,3172,3173,3175,3178],{"class":684,"line":824},[682,3174,676],{"class":688},[682,3176,3177],{"class":691}," run",[682,3179,3180],{"class":691}," example:eve\n",[516,3182,3183,3184,3187,3188,3191,3192,3195,3196,3202],{},"The ",[535,3185,3186],{},"examples\u002Feve"," project is a ",[526,3189,3190],{},"support refund copilot"," (Clearbill SaaS): lookup customer → lookup order → issue refund, with eve approvals when amount > $100. 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