Thanks for the note about the wallet. I had to investigate, since my custom address works with all lightning wallets I tested.
I just found out the issue being Primal is sending requests without validating LN address callback URL. So it appends ?amount= while other wallets add the proper &amount= since the callback URL already has "?"
npub1x2…cd84l
2026-02-02 03:03:19 UTC
in reply to nevent1q…ljx6
Author Public Key
npub1x2lvvh5x6rvpqddfwfsrwfhakpjcvs3xmxr33ec70khjdflmragsscd84lPublished at
2026-02-02 03:03:19 UTCEvent JSON
{
"id": "92ad0e9621276ecb166665bfede1cab34a81430fc6a43d575c04b5bbc4846cee",
"pubkey": "32bec65e86d0d81035a972603726fdb065864226d98718e71e7daf26a7fb1f51",
"created_at": 1770001399,
"kind": 1,
"tags": [
[
"p",
"32bec65e86d0d81035a972603726fdb065864226d98718e71e7daf26a7fb1f51",
"",
"mention"
],
[
"p",
"6cc4225f7970c56b9f4a1784a85ddbbde97599e365ba8c864a4d9105942b7222"
],
[
"e",
"85576537c39cec2f8ce08bb672a88ae9369af2e68d45662bb6ed57bf738eb1db",
"",
"root",
"6cc4225f7970c56b9f4a1784a85ddbbde97599e365ba8c864a4d9105942b7222"
]
],
"content": "Thanks for the note about the wallet. I had to investigate, since my custom address works with all lightning wallets I tested. \n\nI just found out the issue being Primal is sending requests without validating LN address callback URL. So it appends ?amount= while other wallets add the proper \u0026amount= since the callback URL already has \"?\" \n\n",
"sig": "ea6b4e461c40c957308f388947a5be5174aeafe5230cf52633bc9c04f30f66a54e6b5021d460e232fe836d778d81a7cc40f420a13f694b61b29af48795ae0f2b"
}