ListeningKitVestaServerGraphQLRegisterProviderFinishRegisterMutation
| Domain | background |
| Kind | mutation |
| doc_id | 39510870261845795 |
| Path | /api/graphql/ |
| Sends | input |
| Reads | fbid_based_auth_layer_vesta_finish_register.register_success, fbid_based_auth_layer_vesta_finish_register.viewer |
| Called from | VestaServerGraphQLRegisterProvider |
| rea | ev_0ab5183bd10aac3cce52a56ca59b5b4aaad0be331c0f278051ebc1a761677bbf |
Seen 3 time(s) in 3 run(s).
| Action | Our step | Times | Status | Took | After step start | Errors |
|---|---|---|---|---|---|---|
| inspect | pin: typed the account's Messenger PIN | 3 | 200 | 809 ms | 6147 ms | — |
What it sent and what came back (the newest 1 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/inspect/20261022T100521_61594063207669, pin: typed the account's Messenger PIN: 200, 809 ms
Sent:
{
"qpl_active_flow_ids": "521482085,521482858",
"fb_api_caller_class": "RelayModern",
"fb_api_req_friendly_name": "VestaServerGraphQLRegisterProviderFinishRegisterMutation",
"server_timestamps": "true",
"variables": {
"input": {
"actor_id": "61594063207669",
"client_mutation_id": "4",
"base64url_encoded_enc_reg_payload": "gGkcxqXv5kAnGleduETjXTDXFyyBh1s53ozcV-4jukjCBcPGWp-wieVepLTDRYXTcQmBH4--oB6lB3ziZ3oPytwoQj5No8yd4Tio3j9gcuFTI3B3LW3EfHx5Q4kQFWELtXc8G_fbEDUITVM3TIGPGQ21_fiRs5_rYbrkOoYHsdQDpkkMFNRwqjKLXthCMjRci0W9TQB6PZ-xW410MpyD9NxcbQIzr1AkoGx8lkylRYKf2JhCYaF4-kxURVAc7mCAvfcN3NwrSebdJuXb4wZdT4GUqkH5Jdkmwl4d29KrZMUzABf3b3IUYuaoX3zb4zCB5RqidNa-3jy7IUN4C_l9eTkmAQrRBBXzTr7MxZNh_WR7XmAxvlMpFODYUAosTtYi6xoFnNCY54d2qFF-… (512 chars)",
"fbid": "sp5MI2FeHD/hrI1wOQXbKg==",
"product_use_case": "MSGR_ENC_BACKUP",
"vesta_client_api_version": 6,
"vesta_client_protocol_version": 1,
"is_post_login_register": false
}
},
"doc_id": "39510870261845795",
"fb_api_analytics_tags": [
"qpl_active_flow_ids=521482085,521482858"
]
}Answered:
{
"data": {
"fbid_based_auth_layer_vesta_finish_register": {
"register_success": true,
"viewer": {
"messenger_default_encrypted_backup": null
}
}
},
"extensions": {
"server_metadata": {
"request_start_time_ms": 1792663633155,
"time_at_flush_ms": 1792663633624
},
"is_final": true
}
}What it does
Completes the PIN registration: it sends the client's answer to Begin's challenge (input) and reads register_success and the viewer. It fired about 6 s after the confirm pin began, 809 ms, and the "Creating your PIN…" announcement cleared after it.
What our machine does with it
register_success is the proof the PIN is set. The flow today confirms on Begin; Finish answering 200 and the inbox showing (Chats, All, Unread, Groups, no PIN dialog) are what the recording shows after it. Bethlehem passed both on 2026-10-22.
What can go wrong
None seen: one call, 200 in 809 ms. If register_success were false, Messenger would ask again; the page state would still be messengerPinCreate, and the PIN in Twenty would be checked before another try.