Such mixing is a bad idea and complicates the query pipeline. IDs filters take a different codepath than normal filters.
For example you have a REQ that contains a normal filter, and an IDs filter. The relay sets a limit of 2000 events.
The normal filter could return 2000 events and the IDs filter never gets retrieved. If you set a limit on the normal filter it could also apply to the IDs filter. (per filter limits don’t exist)
This doesn’t mean filters like “events with IDs <list> and kind 1” is rejected. Only REQs with 2 filters like “events with IDs <list>” and “events with kind 1”
semisol
npub122…cgrkj
2025-09-14 11:15:05 UTC
in reply to nevent1q…g82t
Author Public Key
npub12262qa4uhw7u8gdwlgmntqtv7aye8vdcmvszkqwgs0zchel6mz7s6cgrkjPublished at
2025-09-14 11:15:05 UTCEvent JSON
{
"id": "1d1535fe66220fa5879a1dee5d9500e5efb8535736a701658db36cf07693bb42",
"pubkey": "52b4a076bcbbbdc3a1aefa3735816cf74993b1b8db202b01c883c58be7fad8bd",
"created_at": 1757848505,
"kind": 1,
"tags": [
[
"e",
"3093c4a8611d7345c8a0e1f58b792afcc33cae553f71a86d347ab2d938d55925",
"wss://nos.lol/",
"root"
],
[
"e",
"7415593cb698bbdcda91b619bad5593cdad978089936813e9ab55bbafeb5ad2e",
"",
"reply"
],
[
"p",
"74fb3ef27cd8985d7fefc6e94d178290275f5492557b4a166ab9cd1458adabc7"
]
],
"content": "Such mixing is a bad idea and complicates the query pipeline. IDs filters take a different codepath than normal filters.\n\nFor example you have a REQ that contains a normal filter, and an IDs filter. The relay sets a limit of 2000 events.\n\nThe normal filter could return 2000 events and the IDs filter never gets retrieved. If you set a limit on the normal filter it could also apply to the IDs filter. (per filter limits don’t exist)\n\nThis doesn’t mean filters like “events with IDs \u003clist\u003e and kind 1” is rejected. Only REQs with 2 filters like “events with IDs \u003clist\u003e” and “events with kind 1”",
"sig": "250ee2d13f8429f456d65f86c7a8ac06e6fea241db4041179bfec2f920ce43a7ea7ad6fbaac7bf984e5a3a4647368dedd2816e4bbb24ae53bb4ea3908e73e889"
}