PlatformsFacebookBackground

useCIXLogMutation

Domainbackground
Kindmutation
doc_id24438951589125380
Path/api/graphql/
Sendsinput
Readscix_log.__typename
Called fromuseCIXLogMutation
reaev_0ca36e9f0272f54d6efc377d69610c37c2f02cb2d73b8dde56b76160adbc8ead

Seen 14 time(s) in 7 run(s).

ActionOur stepTimesStatusTookAfter step startErrors
warmupscroll: +127px in 4 wheel steps, 125 ms1200359 ms4540 ms—
warmupscroll: -605px in 14 wheel steps, 687 ms1200379 ms2410 ms—
warmupscroll: +459px in 11 wheel steps, 500 ms1200368 ms1144 ms—
warmupopenAny: read /marketplace/item/<id>/1200375 ms4240 ms—
warmupscroll: -756px in 16 wheel steps, 656 ms1200383 ms1781 ms—
inspectstep 22: clickRole button "…"1200583 ms3161 ms—
inspectscroll: -577px in 13 wheel steps, 859 ms1200503 ms3589 ms—
inspectscroll: +978px in 22 wheel steps, 1531 ms1200468 ms1992 ms—
inspectstep 25: openAny 1-3 x /marketplace/item/1200486 ms4053 ms—
warmupscroll: +213px in 7 wheel steps, 453 ms1200445 ms290 ms—
warmupscroll: -1034px in 22 wheel steps, 1032 ms1200384 ms1573 ms—
warmupscroll: +981px in 24 wheel steps, 1672 ms1200392 ms3051 ms—
hostscroll: -553px in 12 wheel steps, 499 ms1200194 ms1144 ms—
hostscroll: +617px in 15 wheel steps, 789 ms1200172 ms1220 ms—

What it sent and what came back (the newest 2 from our runs)

Read from each run's own recording (rule 73), secrets and signed link tokens taken out. Kept in ~/.logCli/rea/clientFacts.json, so it stays after the run is pruned.

runs/host/20261026T180628_61594285317994, scroll: -553px in 12 wheel steps, 499 ms: 200, 194 ms

Sent:

{
  "fb_api_caller_class": "RelayModern",
  "fb_api_req_friendly_name": "useCIXLogMutation",
  "server_timestamps": "true",
  "variables": {
    "input": {
      "frx": {
        "context": "{\"session_id\":\"a3c99675-e371-4f34-9bbe-c54b4e7989b5\",\"type\":2,\"story_location\":\"marketplace_pdp\",\"entry_point\":\"report_button\",\"reportable_ent_token\":\"29987156274207440\"}",
        "frx_menu_item_loaded": null,
        "product_attribution": "CometMarketplacePermalinkRoot.react,comet.marketplace.item,unexpected,1793038230014,797264,1606854132932955,,;CometMarketplaceHomeRoot.react,comet.marketplace.home,via_cold_start,1793038198638,353894,1606854132932955,494,1818774979262678"
      },
      "actor_id": "61594285317994",
      "client_mutation_id": "1"
    }
  },
  "doc_id": "24438951589125380"
}

Answered:

{
  "data": {
    "cix_log": {
      "__typename": "CIXLoggerOutput"
    }
  },
  "extensions": {
    "server_metadata": {
      "request_start_time_ms": 1793038229438,
      "time_at_flush_ms": 1793038229468
    },
    "is_final": true
  }
}

runs/host/20261026T180628_61594285317994, scroll: +617px in 15 wheel steps, 789 ms: 200, 172 ms

Sent:

{
  "fb_api_caller_class": "RelayModern",
  "fb_api_req_friendly_name": "useCIXLogMutation",
  "server_timestamps": "true",
  "variables": {
    "input": {
      "frx": {
        "context": "{\"session_id\":\"b3d92a3a-357f-4d8c-a7a1-1ac47fe02e73\",\"type\":2,\"story_location\":\"marketplace_pdp\",\"entry_point\":\"report_button\",\"reportable_ent_token\":\"29436407615976563\"}",
        "frx_menu_item_loaded": null,
        "product_attribution": "CometMarketplacePermalinkRoot.react,comet.marketplace.item,unexpected,1793038240744,92809,1606854132932955,,;CometMarketplaceHomeRoot.react,comet.marketplace.home,via_cold_start,1793038198638,353894,1606854132932955,494,2249546198922840"
      },
      "actor_id": "61594285317994",
      "client_mutation_id": "4"
    }
  },
  "doc_id": "24438951589125380"
}

Answered:

{
  "data": {
    "cix_log": {
      "__typename": "CIXLoggerOutput"
    }
  },
  "extensions": {
    "server_metadata": {
      "request_start_time_ms": 1793038240068,
      "time_at_flush_ms": 1793038240094
    },
    "is_final": true
  }
}

What it does

A logging call from Facebook's client: it sends input and reads only cix_log.__typename. It fired 3 times in 2 runs, 1.5-3.2 s into scrolls of the Marketplace browse feed, with CometMarketplaceSetProductItemSeenStateMutation.

What our machine does with it

Nothing in our machines reads it; it comes with the feed warm-up's scrollMarketplace.

What can go wrong

None seen: all three answered 200 in 468-503 ms. Nothing waits on it.