Of course, this could be useful. They probably can’t use it 1:1, but it can still serve as a good source of inspiration.
In general, the Pixelix (npub19j2…ncm0) developers need to run their own proxy relay that Web Push notifications are sent to. That relay is responsible for holding the private keys. When users enable Web Push notifications, the application should be configured to use the URL of that proxy relay.
This is exactly the same approach used by Mastodon.
Marcin Czachurski
npub1jz…pgwg4
2026-07-03 16:15:02 UTC
in reply to nevent1q…z3uz
Author Public Key
npub1jzr6pn59vgar2h9lug7v4ndur6uud8tt94fwkh0a0488vsrsuerqkpgwg4Seen on
wss://relay.momostr.pinkPublished at
2026-07-03 16:15:02 UTCEvent JSON
{
"id": "92b03a53a6d6a581b8530207f9ec3c7c617b917d7cf9885845b5f02e763092d6",
"pubkey": "9087a0ce85623a355cbfe23ccacdbc1eb9c69d6b2d52eb5dfd7d4e764070e646",
"created_at": 1783095302,
"kind": 1,
"tags": [
[
"p",
"2c953a31f3437d923ed19cbc22b25f48c141372feb9e3fdfefc7ae6e93730347"
],
[
"e",
"3f8b5c8dfcc14bbdc7190688affbc81724e57fc9a9562c360b77f66ee51375e6",
"",
"root",
"9087a0ce85623a355cbfe23ccacdbc1eb9c69d6b2d52eb5dfd7d4e764070e646"
],
[
"p",
"9087a0ce85623a355cbfe23ccacdbc1eb9c69d6b2d52eb5dfd7d4e764070e646"
],
[
"proxy",
"https://mastodon.social/@mczachurski/116856933757885279",
"web"
],
[
"p",
"3433f95629aec1acd57beb47ac98b05192d0c6ae0703357a6ae25bac7d91d82c"
],
[
"e",
"a723d5153a8899d662aff7743a4404a49ff6397acc5cfb38c465ad1f9addfdec",
"",
"reply",
"3433f95629aec1acd57beb47ac98b05192d0c6ae0703357a6ae25bac7d91d82c"
],
[
"proxy",
"https://mastodon.social/users/mczachurski/statuses/116856933757885279",
"activitypub"
],
[
"L",
"pink.momostr"
],
[
"l",
"pink.momostr.activitypub:https://mastodon.social/users/mczachurski/statuses/116856933757885279",
"pink.momostr"
],
[
"-"
]
],
"content": "Of course, this could be useful. They probably can’t use it 1:1, but it can still serve as a good source of inspiration.\n\nIn general, the nostr:npub19j2n5v0ngd7ey0k3nj7z9vjlfrq5zde0aw0rlhl0c7hxaymnqdrsj7ncm0 developers need to run their own proxy relay that Web Push notifications are sent to. That relay is responsible for holding the private keys. When users enable Web Push notifications, the application should be configured to use the URL of that proxy relay.\n\nThis is exactly the same approach used by Mastodon.",
"sig": "c5b05dc7d83fe244dfc897a8c62d8048f71c853c3b0b8a473d1cfc7456ce48e1e4c9d228d0b389d101f09c173a96baa6502a953cdb9033cbb6ff85319a8fec09"
}