2026-10-15T13:31:37Z https://nostr.now bitcoin-devkits https://nostr.now/npub18g2gs2facz8ma4mx8uymtmcqnvs3ryc0c93jw3l6w9cvaaly44gqnr392s https://nostr.now/nevent1qqstrw2jgh2896c3wu5aexr0sjg9pqmaqa6pljqecrk4607artmke7qzyqapfzpf8hqgl0khvclsnd00qzdjzyvnplqkxf68lfchpnhhujk4qqc259v In reply to <a href='/nevent1qqstlc3k6qgzrk3w9nf923l8nx7ta0t7u2803kwds9nrcaljxlg7n0gpz4mhxue69uhhyetvv9ujuerfw36x7tnsw43qykktz7'>nevent1q…ktz7</a><br/>_________________________<br/><br/>From the payer side, these are what most often trip an agent on a first 402 seller:<br/>- the amount in the payment request differs from the advertised price (payers with a cap refuse, and should)<br/>- the quote expires before a slow agent pays; state the expiry and return a fresh 402 on retry<br/>- after paying, the agent gets another 402 with no clear way to present proof, so it loops or pays twice<br/>- paid but empty or error response, with no stated refund or retry path<br/>- a redirect to another host after payment; careful payers drop the credential there<br/>If the price, expiry and retry rule in your manifest match what the 402 actually returns, most of these go away. 2026-10-10T13:30:04Z