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Raw ",[537,633,634],{},"argv"," is never read; disclosure is generated from your runtime config so it cannot drift from what you actually collect.",[637,638,641,644,794],"prompt",{":actions":639,"description":640,"icon":373},"[\"copy\",\"cursor\",\"claude\"]","Add anonymous telemetry to my CLI or script",[534,642,643],{},"Add privacy-respecting telemetry to my CLI, script, or GitHub Action with @evlog\u002Ftelemetry.",[645,646,647,663,670,684,694,712,726,739,745,756,767],"ul",{},[648,649,650,651,654,655,658,659,662],"li",{},"Detect my entrypoint: citty CLI (",[537,652,653],{},"withTelemetry","), standalone script (",[537,656,657],{},"createTelemetry","), or GitHub Actions (",[537,660,661],{},"createGitHubActionsTelemetry",")",[648,664,665,666,669],{},"Install: ",[537,667,668],{},"pnpm add @evlog\u002Ftelemetry"," (or npm\u002Fyarn\u002Fbun)",[648,671,672,673,676,677,680,681],{},"Citty: wrap the root command in ",[537,674,675],{},"withTelemetry()"," in ",[537,678,679],{},"src\u002Findex.ts"," and add ",[537,682,683],{},"defineTelemetryCommands({ name: TOOL })",[648,685,686,687,690,691],{},"Script \u002F migrator: ",[537,688,689],{},"createTelemetry({ name, version })"," and wrap each logical unit with ",[537,692,693],{},"t.run('command', fn)",[648,695,696,697,700,701,704,705,708,709],{},"GitHub Actions: ",[537,698,699],{},"createGitHubActionsTelemetry()"," — only ",[537,702,703],{},"GITHUB_ACTION"," \u002F ",[537,706,707],{},"GITHUB_EVENT_NAME"," are injected into ",[537,710,711],{},"custom",[648,713,714,715,704,718,721,722,725],{},"Declare ",[537,716,717],{},"collect.flags",[537,719,720],{},"collect.fields"," for any string values you need beyond the ",[537,723,724],{},"\"\u003Cset>\""," marker",[648,727,728,729,731,732,734,735],{},"Put your product schema in ",[537,730,711],{}," via ",[537,733,630],{}," — see ",[542,736,738],{"href":737},"\u002Fuse-cases\u002Ftelemetry\u002Freference#extending-the-schema","Extending the schema",[648,740,741,742,744],{},"Call ",[537,743,630],{}," for business counters (numbers\u002Fbooleans) inside handlers or helpers on the same async stack",[648,746,747,748,751,752,755],{},"Run ",[537,749,750],{},"generateDisclosure()"," and commit ",[537,753,754],{},"TELEMETRY.md"," beside the tool",[648,757,758,759,762,763,766],{},"Bake an ingestion URL in ",[537,760,761],{},"endpoint"," (or ",[537,764,765],{},"EVLOG_TELEMETRY_ENDPOINT",") — the local outbox is a buffer, not the destination",[648,768,769,770,773,774,777,778,781,782,785,786,789,790,793],{},"Ship ",[537,771,772],{},"POST \u002Fapi\u002Ftelemetry\u002Fingest"," on my app: use ",[537,775,776],{},"parseIngestBody()"," from ",[537,779,780],{},"@evlog\u002Ftelemetry\u002Fingest"," with ",[537,783,784],{},"allowedTools"," + ",[537,787,788],{},"allowedCustomKeys",", dedupe on ",[537,791,792],{},"idempotencyKey",", return 204 on success",[534,795,796,797],{},"Docs: ",[542,798,799],{"href":799,"rel":800},"https:\u002F\u002Fwww.evlog.dev\u002Fuse-cases\u002Ftelemetry\u002Foverview",[546],[802,803,805],"h2",{"id":804},"from-cli-to-your-backend","From CLI to your backend",[534,807,808,809,812,813,816,817,820],{},"The disk outbox (",[537,810,811],{},"~\u002F.config\u002F{toolName}\u002Ftelemetry\u002Foutbox.ndjson",") is a ",[550,814,815],{},"reliability buffer",", not where telemetry lives long-term. Each run appends one event locally, then the HTTP drain POSTs the backlog to ",[550,818,819],{},"your"," ingestion endpoint. Short-lived CI jobs and offline machines drain on the next invocation.",[822,823,824,834,845,853,863,874,883],"ol",{},[648,825,826,829,830,833],{},[550,827,828],{},"Run"," — ",[537,831,832],{},"my-tool doctor"," executes on the user's machine",[648,835,836,829,839,841,842],{},[550,837,838],{},"Capture",[537,840,539],{}," sanitizes flags, checks consent, and records one ",[537,843,844],{},"RunEvent",[648,846,847,850,851],{},[550,848,849],{},"Buffer"," — the event appends to ",[537,852,811],{},[648,854,855,858,859,862],{},[550,856,857],{},"Send"," — on flush, POST ",[537,860,861],{},"{ events: RunEvent[] }"," to your ingest URL",[648,864,865,829,868,870,871,662],{},[550,866,867],{},"Validate",[537,869,776],{}," allowlists tools and custom keys (",[542,872,873],{"href":421},"Ingest",[648,875,876,879,880,882],{},[550,877,878],{},"Store"," — dedupe on ",[537,881,792],{},", then DB \u002F warehouse \u002F evlog drain",[648,884,885,888,889,892],{},[550,886,887],{},"Ack"," — on ",[537,890,891],{},"2xx",", delivered keys are removed from the outbox",[558,894,899],{"className":895,"code":897,"language":898,"meta":564},[896],"language-text","CLI → @evlog\u002Ftelemetry → outbox.ndjson → POST \u002Fingest → validate → store\n","text",[537,900,897],{"__ignoreMap":564},[534,902,903],{},"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).",[802,905,907],{"id":906},"why-install-it","Why install it",[534,909,910],{},"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.",[912,913,915],"h3",{"id":914},"what-you-get-for-28-kb","What you get for ~28 KB",[917,918,919,930],"table",{},[920,921,922],"thead",{},[923,924,925,928],"tr",{},[926,927],"th",{},[926,929],{},[931,932,933,950,965,985],"tbody",{},[923,934,935,941],{},[936,937,938],"td",{},[550,939,940],{},"Published size",[936,942,943,944,946,947,949],{},"~28 KB ESM (",[537,945,539],{},"), ~8.6 KB gzip — standalone, no dependency on ",[537,948,547],{}," core",[923,951,952,957],{},[936,953,954],{},[550,955,956],{},"Server ingest only",[936,958,959,961,962,964],{},[537,960,780],{}," ~5 KB (~1.7 KB gzip) — ",[537,963,776],{}," without pulling citty wiring into your API",[923,966,967,972],{},[936,968,969],{},[550,970,971],{},"Runtime deps",[936,973,974,785,977,980,981,984],{},[537,975,976],{},"citty",[537,978,979],{},"std-env"," only — both ",[537,982,983],{},"sideEffects: false",", tree-shakeable ESM",[923,986,987,992],{},[936,988,989],{},[550,990,991],{},"Node",[936,993,994,995,997],{},"18+ · ESM · ",[537,996,983],{}," on the package",[912,999,1001],{"id":1000},"fits-wherever-your-code-runs","Fits wherever your code runs",[917,1003,1004,1017],{},[920,1005,1006],{},[923,1007,1008,1011,1014],{},[926,1009,1010],{},"Surface",[926,1012,1013],{},"Entry",[926,1015,1016],{},"Lines of integration",[931,1018,1019,1037,1055,1076],{},[923,1020,1021,1026,1031],{},[936,1022,1023],{},[550,1024,1025],{},"citty CLI",[936,1027,1028,1030],{},[537,1029,675],{}," on the root command",[936,1032,1033,1034],{},"One wrapper + optional ",[537,1035,1036],{},"defineTelemetryCommands()",[923,1038,1039,1044,1052],{},[936,1040,1041],{},[550,1042,1043],{},"Script \u002F migrator",[936,1045,1046,785,1049],{},[537,1047,1048],{},"createTelemetry()",[537,1050,1051],{},"t.run()",[936,1053,1054],{},"Wrap each logical run",[923,1056,1057,1062,1066],{},[936,1058,1059],{},[550,1060,1061],{},"GitHub Actions",[936,1063,1064],{},[537,1065,699],{},[936,1067,1068,1069,704,1072,1075],{},"Same as script; ",[537,1070,1071],{},"ghaAction",[537,1073,1074],{},"ghaEvent"," auto-injected",[923,1077,1078,1083,1089],{},[936,1079,1080],{},[550,1081,1082],{},"Your API (ingest)",[936,1084,1085,777,1087],{},[537,1086,776],{},[537,1088,780],{},[936,1090,1091],{},"One validator + one POST route",[534,1093,1094,1095,1098],{},"No framework lock-in. No PostHog \u002F Segment \u002F custom analytics SDK. No second schema to maintain, since disclosure is generated from the same ",[537,1096,1097],{},"collect"," config the CLI uses at runtime.",[912,1100,1102],{"id":1101},"what-you-skip-building","What you skip building",[645,1104,1105,1110,1119,1122,1130,1133,1139,1142],{},[648,1106,1107,1108,662],{},"Privacy-safe flag capture (never reads raw ",[537,1109,634],{},[648,1111,1112,704,1115,1118],{},[537,1113,1114],{},"DO_NOT_TRACK",[537,1116,1117],{},"EVLOG_TELEMETRY"," \u002F persisted opt-out with outbox purge",[648,1120,1121],{},"Disk outbox with lockfile, stale-lock recovery, and backlog drain",[648,1123,1124,1125,785,1127,662],{},"Auto-generated disclosure (",[537,1126,754],{},[537,1128,1129],{},"telemetry status",[648,1131,1132],{},"First-run notice with opt-out instructions",[648,1134,1135,1136,1138],{},"Typed ",[537,1137,630],{}," with allowlisted string fields",[648,1140,1141],{},"Server-side ingest validation aligned with the CLI envelope",[648,1143,1144,1145],{},"Hard guarantee: ",[550,1146,1147],{},"telemetry never throws, never blocks exit",[912,1149,1151],{"id":1150},"the-payoff","The payoff",[534,1153,1154],{},"Once ingest is live you can answer product questions that CLI authors usually guess at:",[645,1156,1157,1168,1179,1186,1193],{},[648,1158,1159,1160,1162,1163,1162,1166,662],{},"Which commands are actually used (",[537,1161,109],{}," vs ",[537,1164,1165],{},"sync",[537,1167,1129],{},[648,1169,1170,1171,1174,1175,1178],{},"Where runs fail (",[537,1172,1173],{},"outcome",", ",[537,1176,1177],{},"errorCode",", version breakdown)",[648,1180,1181,1182,1185],{},"How long operations take (",[537,1183,1184],{},"durationMs"," per command)",[648,1187,1188,1189,1192],{},"Which versions are still in the wild (",[537,1190,1191],{},"tool.version"," on every event)",[648,1194,1195,1196,1174,1199,1174,1202,662],{},"Whether CI or local dev dominates (",[537,1197,1198],{},"env.ci",[537,1200,1201],{},"env.agent",[537,1203,1204],{},"env.tty",[534,1206,1207],{},"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.",[1209,1210,1213,1214,1221,1222,1174,1225,1228,1229,1231],"callout",{"color":1211,"icon":1212},"neutral","i-lucide-package","Try it locally: ",[542,1215,1218],{"href":1216,"rel":1217},"https:\u002F\u002Fgithub.com\u002FHugoRCD\u002Fevlog\u002Ftree\u002Fmain\u002Fexamples\u002Ftelemetry-playground",[546],[537,1219,1220],{},"examples\u002Ftelemetry-playground",": ",[537,1223,1224],{},"pnpm run cli -- doctor",[537,1226,1227],{},"EVLOG_TELEMETRY_DEBUG=1"," to inspect payloads, ",[537,1230,1129],{}," for disclosure.",[802,1233,1235],{"id":1234},"see-also","See also",[645,1237,1238,1243,1248,1253,1259],{},[648,1239,1240,1242],{},[542,1241,415],{"href":416}," — citty, scripts, GitHub Actions, delivery config",[648,1244,1245,1247],{},[542,1246,873],{"href":421}," — server endpoint, validation, storage",[648,1249,1250,1252],{},[542,1251,424],{"href":425}," — envelope, schema extensions, disclosure, consent",[648,1254,1255,1258],{},[542,1256,1257],{"href":381},"Audit"," — wide events for security-sensitive actions",[648,1260,1261,1263],{},[542,1262,492],{"href":493}," — forward ingested events into Axiom, Datadog, OTLP, or a custom store",[1265,1266,1267],"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":564,"searchDepth":1269,"depth":1269,"links":1270},2,[1271,1272,1279],{"id":804,"depth":1269,"text":805},{"id":906,"depth":1269,"text":907,"children":1273},[1274,1276,1277,1278],{"id":914,"depth":1275,"text":915},3,{"id":1000,"depth":1275,"text":1001},{"id":1101,"depth":1275,"text":1102},{"id":1150,"depth":1275,"text":1151},{"id":1234,"depth":1269,"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",[1283,1285,1287],{"label":415,"icon":418,"to":416,"color":1211,"variant":1284},"subtle",{"label":873,"icon":1286,"to":421,"color":1211,"variant":1284},"i-lucide-server",{"label":424,"icon":406,"to":425,"color":1211,"variant":1284},{},{"title":128,"icon":140},{"title":114,"description":1280},"COcJXnO_hNGqrtlSrqPmGA3fxzei1QUzrWi02-XLYxc",[1293,1295],{"title":403,"path":404,"stem":405,"description":1294,"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":1296,"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.",1786793478523]