nostr-feed

Optional module — subscribe to kind:1 notes, publish signed posts, and zap creators via WebLN and NIP-57.

Social feed demo combining Nostr relays with optional Lightning zaps. Reads and writes kind-1 text notes; zaps use NIP-57 (LNURL + WebLN payment + zap receipt).

Files added

File	Purpose
`lib/nostr/relay.ts`	WebSocket relay subscription helpers
`lib/nostr-zap.ts`	NIP-57 zap request + receipt logic
`components/nostr/NostrFeedProvider.tsx`	Feed context with live subscription
`components/nostr/NoteFeed.tsx`	Scrollable note list
`components/nostr/NoteCard.tsx`	Single note display
`components/nostr/PublishNote.tsx`	Compose + sign + publish
`components/nostr/ZapButton.tsx`	NIP-57 zap flow
`app/demo/nostr-feed/page.tsx`	Demo page

Dependencies

nostr-tools — relay protocol, event verification
react-markdown — note content rendering

Environment variables

Key	Required	Description
`NEXT_PUBLIC_NOSTR_RELAY`	no	Comma-separated relay URLs (default: public relays)

Requires

nostr-identity — signing posts and zap requests
WebLN (always included) — paying zap invoices

PublishNote

Signs kind-1 event and publishes to configured relays:

const { signEvent } = useIdentity();

const event = await signEvent({
  kind: 1,
  created_at: Math.floor(Date.now() / 1000),
  tags: [],
  content: noteText,
});
// publish via relay.ts

Shows "Connect your Nostr identity (NIP-07)" when provider unavailable.

ZapButton (NIP-57)

Zap flow:

Fetch recipient's LNURL from their lud16 lightning address (kind:0 profile)
Create signed zap request (kind:9734)
Get invoice from LNURL callback with zap request embedded
Pay via WebLN sendPayment
Publish zap receipt (kind:9735) to relay

Disabled with message when WebLN unavailable.

NoteFeed

Subscribes to kind:1 notes from NEXT_PUBLIC_NOSTR_RELAY on mount. Live updates via WebSocket EVENT messages.

Demo route

/demo/nostr-feed — read feed, publish notes, zap posts (requires Fedi for zaps).