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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.",[638,639,642,645,791],"prompt",{":actions":640,"description":641,"icon":107},"[\"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.",[646,647,648,664,671,685,695,713,723,736,742,753,764],"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],{},"Declare ",[538,717,718],{},"collect.flags",[538,720,721],{},"collect.fields"," for any string values you need beyond presence-only capture",[649,724,725,726,728,729,731,732],{},"Put your product schema in ",[538,727,712],{}," via ",[538,730,631],{}," — see ",[543,733,735],{"href":734},"\u002Fuse-cases\u002Ftelemetry\u002Freference#extending-the-schema","Extending the schema",[649,737,738,739,741],{},"Call ",[538,740,631],{}," for business counters (numbers\u002Fbooleans) inside handlers or helpers on the same async stack",[649,743,744,745,748,749,752],{},"Run ",[538,746,747],{},"generateDisclosure()"," and commit ",[538,750,751],{},"TELEMETRY.md"," beside the tool",[649,754,755,756,759,760,763],{},"Bake an ingestion URL in ",[538,757,758],{},"endpoint"," (or ",[538,761,762],{},"EVLOG_TELEMETRY_ENDPOINT",") — the local outbox is a buffer, not the destination",[649,765,766,767,770,771,774,775,778,779,782,783,786,787,790],{},"Ship ",[538,768,769],{},"POST \u002Fapi\u002Ftelemetry\u002Fingest"," on my app: use ",[538,772,773],{},"parseIngestBody()"," from ",[538,776,777],{},"@evlog\u002Ftelemetry\u002Fingest"," with ",[538,780,781],{},"allowedTools"," + ",[538,784,785],{},"allowedCustomKeys",", dedupe on ",[538,788,789],{},"idempotencyKey",", return 204 on success",[535,792,793,794],{},"Docs: ",[543,795,796],{"href":796,"rel":797},"https:\u002F\u002Fwww.evlog.dev\u002Fuse-cases\u002Ftelemetry\u002Foverview",[547],[799,800,802],"h2",{"id":801},"from-cli-to-your-backend","From CLI to your backend",[535,804,805,806,809,810,813,814,817],{},"The disk outbox (",[538,807,808],{},"~\u002F.config\u002F{toolName}\u002Ftelemetry\u002Foutbox.ndjson",") is a ",[551,811,812],{},"reliability buffer",", not where telemetry lives long-term. Each run appends one event locally, then the HTTP drain POSTs the backlog to ",[551,815,816],{},"your"," ingestion endpoint. Short-lived CI jobs and offline machines drain on the next invocation.",[819,820,821,831,842,850,860,870,879],"ol",{},[649,822,823,826,827,830],{},[551,824,825],{},"Run"," — ",[538,828,829],{},"my-tool doctor"," executes on the user's machine",[649,832,833,826,836,838,839],{},[551,834,835],{},"Capture",[538,837,540],{}," sanitizes flags, checks consent, and records one ",[538,840,841],{},"RunEvent",[649,843,844,847,848],{},[551,845,846],{},"Buffer"," — the event appends to ",[538,849,808],{},[649,851,852,855,856,859],{},[551,853,854],{},"Send"," — on flush, POST ",[538,857,858],{},"{ events: RunEvent[] }"," to your ingest URL",[649,861,862,826,865,867,868,663],{},[551,863,864],{},"Validate",[538,866,773],{}," allowlists tools and custom keys (",[543,869,422],{"href":423},[649,871,872,875,876,878],{},[551,873,874],{},"Store"," — dedupe on ",[538,877,789],{},", then DB \u002F warehouse \u002F evlog drain",[649,880,881,884,885,888],{},[551,882,883],{},"Ack"," — on ",[538,886,887],{},"2xx",", delivered keys are removed from the outbox",[559,890,895],{"className":891,"code":893,"language":894,"meta":565},[892],"language-text","CLI → @evlog\u002Ftelemetry → outbox.ndjson → POST \u002Fingest → validate → store\n","text",[538,896,893],{"__ignoreMap":565},[535,898,899],{},"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).",[799,901,903],{"id":902},"why-install-it","Why install it",[535,905,906],{},"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.",[908,909,911],"h3",{"id":910},"what-you-get-for-28-kb","What you get for ~28 KB",[913,914,915,926],"table",{},[916,917,918],"thead",{},[919,920,921,924],"tr",{},[922,923],"th",{},[922,925],{},[927,928,929,946,961,981],"tbody",{},[919,930,931,937],{},[932,933,934],"td",{},[551,935,936],{},"Published size",[932,938,939,940,942,943,945],{},"~28 KB ESM (",[538,941,540],{},"), ~8.6 KB gzip — standalone, no dependency on ",[538,944,548],{}," core",[919,947,948,953],{},[932,949,950],{},[551,951,952],{},"Server ingest only",[932,954,955,957,958,960],{},[538,956,777],{}," ~5 KB (~1.7 KB gzip) — ",[538,959,773],{}," without pulling citty wiring into your API",[919,962,963,968],{},[932,964,965],{},[551,966,967],{},"Runtime deps",[932,969,970,782,973,976,977,980],{},[538,971,972],{},"citty",[538,974,975],{},"std-env"," only — both ",[538,978,979],{},"sideEffects: false",", tree-shakeable ESM",[919,982,983,988],{},[932,984,985],{},[551,986,987],{},"Node",[932,989,990,991,993],{},"18+ · ESM · ",[538,992,979],{}," on the package",[908,995,997],{"id":996},"fits-wherever-your-code-runs","Fits wherever your code runs",[913,999,1000,1013],{},[916,1001,1002],{},[919,1003,1004,1007,1010],{},[922,1005,1006],{},"Surface",[922,1008,1009],{},"Entry",[922,1011,1012],{},"Lines of integration",[927,1014,1015,1033,1051,1072],{},[919,1016,1017,1022,1027],{},[932,1018,1019],{},[551,1020,1021],{},"citty CLI",[932,1023,1024,1026],{},[538,1025,676],{}," on the root command",[932,1028,1029,1030],{},"One wrapper + optional ",[538,1031,1032],{},"defineTelemetryCommands()",[919,1034,1035,1040,1048],{},[932,1036,1037],{},[551,1038,1039],{},"Script \u002F migrator",[932,1041,1042,782,1045],{},[538,1043,1044],{},"createTelemetry()",[538,1046,1047],{},"t.run()",[932,1049,1050],{},"Wrap each logical run",[919,1052,1053,1058,1062],{},[932,1054,1055],{},[551,1056,1057],{},"GitHub Actions",[932,1059,1060],{},[538,1061,700],{},[932,1063,1064,1065,705,1068,1071],{},"Same as script; ",[538,1066,1067],{},"ghaAction",[538,1069,1070],{},"ghaEvent"," auto-injected",[919,1073,1074,1079,1085],{},[932,1075,1076],{},[551,1077,1078],{},"Your API (ingest)",[932,1080,1081,774,1083],{},[538,1082,773],{},[538,1084,777],{},[932,1086,1087],{},"One validator + one POST route",[535,1089,1090,1091,1094],{},"No framework lock-in. No PostHog \u002F Segment \u002F custom analytics SDK. No second schema to maintain — disclosure is generated from the same ",[538,1092,1093],{},"collect"," config the CLI uses at runtime.",[908,1096,1098],{"id":1097},"what-you-skip-building","What you skip building",[646,1100,1101,1106,1115,1118,1126,1129,1135,1138],{},[649,1102,1103,1104,663],{},"Privacy-safe flag capture (never reads raw ",[538,1105,635],{},[649,1107,1108,705,1111,1114],{},[538,1109,1110],{},"DO_NOT_TRACK",[538,1112,1113],{},"EVLOG_TELEMETRY"," \u002F persisted opt-out with outbox purge",[649,1116,1117],{},"Disk outbox with lockfile, stale-lock recovery, and backlog drain",[649,1119,1120,1121,782,1123,663],{},"Auto-generated disclosure (",[538,1122,751],{},[538,1124,1125],{},"telemetry status",[649,1127,1128],{},"First-run notice with opt-out instructions",[649,1130,1131,1132,1134],{},"Typed ",[538,1133,631],{}," with allowlisted string fields",[649,1136,1137],{},"Server-side ingest validation aligned with the CLI envelope",[649,1139,1140,1141],{},"Hard guarantee: ",[551,1142,1143],{},"telemetry never throws, never blocks exit",[908,1145,1147],{"id":1146},"the-payoff","The payoff",[535,1149,1150],{},"Once ingest is live you can answer product questions that CLI authors usually guess at:",[646,1152,1153,1164,1175,1182,1189],{},[649,1154,1155,1156,1158,1159,1158,1162,663],{},"Which commands are actually used (",[538,1157,114],{}," vs ",[538,1160,1161],{},"sync",[538,1163,1125],{},[649,1165,1166,1167,1170,1171,1174],{},"Where runs fail (",[538,1168,1169],{},"outcome",", ",[538,1172,1173],{},"errorCode",", version breakdown)",[649,1176,1177,1178,1181],{},"How long operations take (",[538,1179,1180],{},"durationMs"," per command)",[649,1183,1184,1185,1188],{},"Which versions are still in the wild (",[538,1186,1187],{},"tool.version"," on every event)",[649,1190,1191,1192,1170,1195,1170,1198,663],{},"Whether CI or local dev dominates (",[538,1193,1194],{},"env.ci",[538,1196,1197],{},"env.agent",[538,1199,1200],{},"env.tty",[535,1202,1203],{},"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.",[1205,1206,1209,1210,826,1217,1170,1220,1223,1224,1226],"callout",{"color":1207,"icon":1208},"neutral","i-lucide-package","Try it locally: ",[543,1211,1214],{"href":1212,"rel":1213},"https:\u002F\u002Fgithub.com\u002FHugoRCD\u002Fevlog\u002Ftree\u002Fmain\u002Fexamples\u002Ftelemetry-playground",[547],[538,1215,1216],{},"examples\u002Ftelemetry-playground",[538,1218,1219],{},"pnpm run cli -- doctor",[538,1221,1222],{},"EVLOG_TELEMETRY_DEBUG=1"," to inspect payloads, ",[538,1225,1125],{}," for disclosure.",[799,1228,1230],{"id":1229},"see-also","See also",[646,1232,1233,1238,1243,1248,1254],{},[649,1234,1235,1237],{},[543,1236,417],{"href":418}," — citty, scripts, GitHub Actions, delivery config",[649,1239,1240,1242],{},[543,1241,422],{"href":423}," — server endpoint, validation, storage",[649,1244,1245,1247],{},[543,1246,427],{"href":428}," — envelope, schema extensions, disclosure, consent",[649,1249,1250,1253],{},[543,1251,1252],{"href":384},"Audit"," — wide events for security-sensitive actions",[649,1255,1256,1258],{},[543,1257,495],{"href":496}," — forward ingested events into Axiom, Datadog, OTLP, or a custom store",[1260,1261,1262],"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":1264,"depth":1264,"links":1265},2,[1266,1267,1274],{"id":801,"depth":1264,"text":802},{"id":902,"depth":1264,"text":903,"children":1268},[1269,1271,1272,1273],{"id":910,"depth":1270,"text":911},3,{"id":996,"depth":1270,"text":997},{"id":1097,"depth":1270,"text":1098},{"id":1146,"depth":1270,"text":1147},{"id":1229,"depth":1264,"text":1230},"Wide-event telemetry for CLIs and automation — evlog's one-event-per-run model for tools on user machines, with privacy-safe flags, consent, outbox, and auto-generated disclosure.","md",[1278,1280,1281],{"label":417,"icon":420,"to":418,"color":1207,"variant":1279},"subtle",{"label":422,"icon":425,"to":423,"color":1207,"variant":1279},{"label":427,"icon":79,"to":428,"color":1207,"variant":1279},{},{"title":36,"icon":39},{"title":119,"description":1275},"9jh5Kgt4J5jpYeo833BTabRU5EVVS8x7g-W_bp24kEA",[1287,1289],{"title":406,"path":407,"stem":408,"description":1288,"icon":79,"children":-1},"File system, Axiom, and Postgres recipes for audit logs, plus mockAudit for tests and the full API reference.",{"title":417,"path":418,"stem":419,"description":1290,"icon":420,"children":-1},"Wire @evlog\u002Ftelemetry into citty CLIs, standalone scripts, and GitHub Actions — delivery config, automatic flag capture, telemetry.set(), and debug mode.",1785882652017]