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Raw ",[538,634,635],{},"argv"," is never read; disclosure is generated from your runtime config so it cannot drift from what you actually collect.",[638,639,642,645,795],"prompt",{":actions":640,"description":641,"icon":373},"[\"copy\",\"cursor\",\"claude\"]","Add anonymous telemetry to my CLI or script",[535,643,644],{},"Add privacy-respecting telemetry to my CLI, script, or GitHub Action with @evlog\u002Ftelemetry.",[646,647,648,664,671,685,695,713,727,740,746,757,768],"ul",{},[649,650,651,652,655,656,659,660,663],"li",{},"Detect my entrypoint: citty CLI (",[538,653,654],{},"withTelemetry","), standalone script (",[538,657,658],{},"createTelemetry","), or GitHub Actions (",[538,661,662],{},"createGitHubActionsTelemetry",")",[649,665,666,667,670],{},"Install: ",[538,668,669],{},"pnpm add @evlog\u002Ftelemetry"," (or npm\u002Fyarn\u002Fbun)",[649,672,673,674,677,678,681,682],{},"Citty: wrap the root command in ",[538,675,676],{},"withTelemetry()"," in ",[538,679,680],{},"src\u002Findex.ts"," and add ",[538,683,684],{},"defineTelemetryCommands({ name: TOOL })",[649,686,687,688,691,692],{},"Script \u002F migrator: ",[538,689,690],{},"createTelemetry({ name, version })"," and wrap each logical unit with ",[538,693,694],{},"t.run('command', fn)",[649,696,697,698,701,702,705,706,709,710],{},"GitHub Actions: ",[538,699,700],{},"createGitHubActionsTelemetry()",". Only ",[538,703,704],{},"GITHUB_ACTION"," \u002F ",[538,707,708],{},"GITHUB_EVENT_NAME"," are injected into ",[538,711,712],{},"custom",[649,714,715,716,705,719,722,723,726],{},"Declare ",[538,717,718],{},"collect.flags",[538,720,721],{},"collect.fields"," for any string values you need beyond the ",[538,724,725],{},"\"\u003Cset>\""," marker",[649,728,729,730,732,733,735,736],{},"Put your product schema in ",[538,731,712],{}," via ",[538,734,631],{},", see ",[543,737,739],{"href":738},"\u002Fuse-cases\u002Ftelemetry\u002Freference#extending-the-schema","Extending the schema",[649,741,742,743,745],{},"Call ",[538,744,631],{}," for business counters (numbers\u002Fbooleans) inside handlers or helpers on the same async stack",[649,747,748,749,752,753,756],{},"Run ",[538,750,751],{},"generateDisclosure()"," and commit ",[538,754,755],{},"TELEMETRY.md"," beside the tool",[649,758,759,760,763,764,767],{},"Bake an ingestion URL in ",[538,761,762],{},"endpoint"," (or ",[538,765,766],{},"EVLOG_TELEMETRY_ENDPOINT","). The local outbox is a buffer, not the destination",[649,769,770,771,774,775,778,779,782,783,786,787,790,791,794],{},"Ship ",[538,772,773],{},"POST \u002Fapi\u002Ftelemetry\u002Fingest"," on my app: use ",[538,776,777],{},"parseIngestBody()"," from ",[538,780,781],{},"@evlog\u002Ftelemetry\u002Fingest"," with ",[538,784,785],{},"allowedTools"," + ",[538,788,789],{},"allowedCustomKeys",", dedupe on ",[538,792,793],{},"idempotencyKey",", return 204 on success",[535,796,797,798],{},"Docs: ",[543,799,800],{"href":800,"rel":801},"https:\u002F\u002Fwww.evlog.dev\u002Fuse-cases\u002Ftelemetry\u002Foverview",[547],[803,804,806],"h2",{"id":805},"from-cli-to-your-backend","From CLI to your backend",[535,808,809,810,813,814,817,818,821],{},"The disk outbox (",[538,811,812],{},"~\u002F.config\u002F{toolName}\u002Ftelemetry\u002Foutbox.ndjson",") is a ",[551,815,816],{},"reliability buffer",", not where telemetry lives long-term. Each run appends one event locally, then the HTTP drain POSTs the backlog to ",[551,819,820],{},"your"," ingestion endpoint. Short-lived CI jobs and offline machines drain on the next invocation.",[823,824,825,835,846,854,864,875,884],"ol",{},[649,826,827,830,831,834],{},[551,828,829],{},"Run",": ",[538,832,833],{},"my-tool doctor"," executes on the user's machine",[649,836,837,830,840,842,843],{},[551,838,839],{},"Capture",[538,841,540],{}," sanitizes flags, checks consent, and records one ",[538,844,845],{},"RunEvent",[649,847,848,851,852],{},[551,849,850],{},"Buffer",": the event appends to ",[538,853,812],{},[649,855,856,859,860,863],{},[551,857,858],{},"Send",": on flush, POST ",[538,861,862],{},"{ events: RunEvent[] }"," to your ingest URL",[649,865,866,830,869,871,872,663],{},[551,867,868],{},"Validate",[538,870,777],{}," allowlists tools and custom keys (",[543,873,874],{"href":421},"Ingest",[649,876,877,880,881,883],{},[551,878,879],{},"Store",": dedupe on ",[538,882,793],{},", then DB \u002F warehouse \u002F evlog drain",[649,885,886,889,890,893],{},[551,887,888],{},"Ack",": on ",[538,891,892],{},"2xx",", delivered keys are removed from the outbox",[559,895,900],{"className":896,"code":898,"language":899,"meta":565},[897],"language-text","CLI → @evlog\u002Ftelemetry → outbox.ndjson → POST \u002Fingest → validate → store\n","text",[538,901,898],{"__ignoreMap":565},[535,903,904],{},"Nothing is sent until you configure an endpoint and the server returns a success status. Until then, events stay in the outbox (or are purged on opt-out).",[803,906,908],{"id":907},"why-install-it","Why install it",[535,910,911],{},"You can wire anonymous usage telemetry yourself: outbox file, consent flags, flag sanitization, disclosure markdown, ingest validation, first-run notice. Or you add one dependency and get the evlog playbook baked in.",[913,914,916],"h3",{"id":915},"what-you-get-for-28-kb","What you get for ~28 KB",[918,919,920,931],"table",{},[921,922,923],"thead",{},[924,925,926,929],"tr",{},[927,928],"th",{},[927,930],{},[932,933,934,951,966,986],"tbody",{},[924,935,936,942],{},[937,938,939],"td",{},[551,940,941],{},"Published size",[937,943,944,945,947,948,950],{},"~28 KB ESM (",[538,946,540],{},"), ~8.6 KB gzip — standalone, no dependency on ",[538,949,548],{}," core",[924,952,953,958],{},[937,954,955],{},[551,956,957],{},"Server ingest only",[937,959,960,962,963,965],{},[538,961,781],{}," ~5 KB (~1.7 KB gzip) — ",[538,964,777],{}," without pulling citty wiring into your API",[924,967,968,973],{},[937,969,970],{},[551,971,972],{},"Runtime deps",[937,974,975,786,978,981,982,985],{},[538,976,977],{},"citty",[538,979,980],{},"std-env"," only — both ",[538,983,984],{},"sideEffects: false",", tree-shakeable ESM",[924,987,988,993],{},[937,989,990],{},[551,991,992],{},"Node",[937,994,995,996,998],{},"18+ · ESM · ",[538,997,984],{}," on the package",[913,1000,1002],{"id":1001},"fits-wherever-your-code-runs","Fits wherever your code runs",[918,1004,1005,1018],{},[921,1006,1007],{},[924,1008,1009,1012,1015],{},[927,1010,1011],{},"Surface",[927,1013,1014],{},"Entry",[927,1016,1017],{},"Lines of integration",[932,1019,1020,1038,1056,1077],{},[924,1021,1022,1027,1032],{},[937,1023,1024],{},[551,1025,1026],{},"citty CLI",[937,1028,1029,1031],{},[538,1030,676],{}," on the root command",[937,1033,1034,1035],{},"One wrapper + optional ",[538,1036,1037],{},"defineTelemetryCommands()",[924,1039,1040,1045,1053],{},[937,1041,1042],{},[551,1043,1044],{},"Script \u002F migrator",[937,1046,1047,786,1050],{},[538,1048,1049],{},"createTelemetry()",[538,1051,1052],{},"t.run()",[937,1054,1055],{},"Wrap each logical run",[924,1057,1058,1063,1067],{},[937,1059,1060],{},[551,1061,1062],{},"GitHub Actions",[937,1064,1065],{},[538,1066,700],{},[937,1068,1069,1070,705,1073,1076],{},"Same as script; ",[538,1071,1072],{},"ghaAction",[538,1074,1075],{},"ghaEvent"," auto-injected",[924,1078,1079,1084,1090],{},[937,1080,1081],{},[551,1082,1083],{},"Your API (ingest)",[937,1085,1086,778,1088],{},[538,1087,777],{},[538,1089,781],{},[937,1091,1092],{},"One validator + one POST route",[535,1094,1095,1096,1099],{},"No framework lock-in. No PostHog \u002F Segment \u002F custom analytics SDK. No second schema to maintain, since disclosure is generated from the same ",[538,1097,1098],{},"collect"," config the CLI uses at runtime.",[913,1101,1103],{"id":1102},"what-you-skip-building","What you skip building",[646,1105,1106,1111,1120,1123,1131,1134,1140,1143],{},[649,1107,1108,1109,663],{},"Privacy-safe flag capture (never reads raw ",[538,1110,635],{},[649,1112,1113,705,1116,1119],{},[538,1114,1115],{},"DO_NOT_TRACK",[538,1117,1118],{},"EVLOG_TELEMETRY"," \u002F persisted opt-out with outbox purge",[649,1121,1122],{},"Disk outbox with lockfile, stale-lock recovery, and backlog drain",[649,1124,1125,1126,786,1128,663],{},"Auto-generated disclosure (",[538,1127,755],{},[538,1129,1130],{},"telemetry status",[649,1132,1133],{},"First-run notice with opt-out instructions",[649,1135,1136,1137,1139],{},"Typed ",[538,1138,631],{}," with allowlisted string fields",[649,1141,1142],{},"Server-side ingest validation aligned with the CLI envelope",[649,1144,1145,1146],{},"Hard guarantee: ",[551,1147,1148],{},"telemetry never throws, never blocks exit",[913,1150,1152],{"id":1151},"the-payoff","The payoff",[535,1154,1155],{},"Once ingest is live you can answer product questions that CLI authors usually guess at:",[646,1157,1158,1169,1180,1187,1194],{},[649,1159,1160,1161,1163,1164,1163,1167,663],{},"Which commands are actually used (",[538,1162,109],{}," vs ",[538,1165,1166],{},"sync",[538,1168,1130],{},[649,1170,1171,1172,1175,1176,1179],{},"Where runs fail (",[538,1173,1174],{},"outcome",", ",[538,1177,1178],{},"errorCode",", version breakdown)",[649,1181,1182,1183,1186],{},"How long operations take (",[538,1184,1185],{},"durationMs"," per command)",[649,1188,1189,1190,1193],{},"Which versions are still in the wild (",[538,1191,1192],{},"tool.version"," on every event)",[649,1195,1196,1197,1175,1200,1175,1203,663],{},"Whether CI or local dev dominates (",[538,1198,1199],{},"env.ci",[538,1201,1202],{},"env.agent",[538,1204,1205],{},"env.tty",[535,1207,1208],{},"All from one wide event per run, the same mental model as evlog on the server, without bolting a browser analytics stack onto a terminal tool.",[1210,1211,1214,1215,830,1222,1175,1225,1228,1229,1231],"callout",{"color":1212,"icon":1213},"neutral","i-lucide-package","Try it locally: ",[543,1216,1219],{"href":1217,"rel":1218},"https:\u002F\u002Fgithub.com\u002FHugoRCD\u002Fevlog\u002Ftree\u002Fmain\u002Fexamples\u002Ftelemetry-playground",[547],[538,1220,1221],{},"examples\u002Ftelemetry-playground",[538,1223,1224],{},"pnpm run cli -- doctor",[538,1226,1227],{},"EVLOG_TELEMETRY_DEBUG=1"," to inspect payloads, ",[538,1230,1130],{}," for disclosure.",[803,1233,1235],{"id":1234},"see-also","See also",[646,1237,1238,1243,1248,1253,1259],{},[649,1239,1240,1242],{},[543,1241,415],{"href":416},": citty, scripts, GitHub Actions, delivery config",[649,1244,1245,1247],{},[543,1246,874],{"href":421},": server endpoint, validation, storage",[649,1249,1250,1252],{},[543,1251,424],{"href":425},": envelope, schema extensions, disclosure, consent",[649,1254,1255,1258],{},[543,1256,1257],{"href":381},"Audit",": wide events for security-sensitive actions",[649,1260,1261,1264],{},[543,1262,1263],{"href":493},"Drain pipeline",": forward ingested events into Axiom, Datadog, OTLP, or a custom store",[1266,1267,1268],"style",{},"html pre.shiki code .sBMFI, html code.shiki .sBMFI{--shiki-light:#E2931D;--shiki-default:#FFCB6B;--shiki-dark:#FFCB6B}html pre.shiki code .sfazB, html code.shiki .sfazB{--shiki-light:#91B859;--shiki-default:#C3E88D;--shiki-dark:#C3E88D}html .light .shiki span {color: var(--shiki-light);background: var(--shiki-light-bg);font-style: var(--shiki-light-font-style);font-weight: var(--shiki-light-font-weight);text-decoration: var(--shiki-light-text-decoration);}html.light .shiki span {color: var(--shiki-light);background: var(--shiki-light-bg);font-style: var(--shiki-light-font-style);font-weight: var(--shiki-light-font-weight);text-decoration: var(--shiki-light-text-decoration);}html .default .shiki span {color: var(--shiki-default);background: var(--shiki-default-bg);font-style: var(--shiki-default-font-style);font-weight: var(--shiki-default-font-weight);text-decoration: var(--shiki-default-text-decoration);}html .shiki span {color: var(--shiki-default);background: var(--shiki-default-bg);font-style: var(--shiki-default-font-style);font-weight: var(--shiki-default-font-weight);text-decoration: var(--shiki-default-text-decoration);}html .dark .shiki span {color: var(--shiki-dark);background: var(--shiki-dark-bg);font-style: var(--shiki-dark-font-style);font-weight: var(--shiki-dark-font-weight);text-decoration: var(--shiki-dark-text-decoration);}html.dark .shiki span {color: var(--shiki-dark);background: var(--shiki-dark-bg);font-style: var(--shiki-dark-font-style);font-weight: var(--shiki-dark-font-weight);text-decoration: var(--shiki-dark-text-decoration);}",{"title":565,"searchDepth":1270,"depth":1270,"links":1271},2,[1272,1273,1280],{"id":805,"depth":1270,"text":806},{"id":907,"depth":1270,"text":908,"children":1274},[1275,1277,1278,1279],{"id":915,"depth":1276,"text":916},3,{"id":1001,"depth":1276,"text":1002},{"id":1102,"depth":1276,"text":1103},{"id":1151,"depth":1276,"text":1152},{"id":1234,"depth":1270,"text":1235},"One event per run for CLIs and automation, with privacy-safe flags, consent, an outbox, and disclosure generated from the same config.","md",[1284,1286,1288],{"label":415,"icon":418,"to":416,"color":1212,"variant":1285},"subtle",{"label":874,"icon":1287,"to":421,"color":1212,"variant":1285},"i-lucide-server",{"label":424,"icon":406,"to":425,"color":1212,"variant":1285},{},{"title":128,"icon":140},{"title":114,"description":1281},"AxDuOU1FdLRQg54Mv-z255mpOH-cqTcIzq2DPCj0tsQ",[1294,1296],{"title":403,"path":404,"stem":405,"description":1295,"icon":406,"children":-1},"File system, Axiom, and Postgres recipes for audit logs, plus mockAudit for tests and the full API reference.",{"title":415,"path":416,"stem":417,"description":1297,"icon":418,"children":-1},"Wire @evlog\u002Ftelemetry into citty CLIs, standalone scripts, and GitHub Actions — delivery config, automatic flag capture, telemetry.set(), and debug mode.",1786800771109]