Community Apps

Private Nostr Relay

By Marcus Quinn

Private Nostr relay with allowlisted writes

1.1.3 512MB Updated 17 Oct 2026
Package Website Documentation
nostr relay privacy self-hosted
Install this app
In your Cloudron dashboard, open the App Store, choose "Community apps" and paste this URL:
https://raw.githubusercontent.com/marcusquinn/cloudron-nostr-relay-app/main/CloudronVersions.json

Description

A private Nostr relay powered by strfry.

Only the public keys you list can publish events. Every other write is rejected, so the relay never becomes an open public relay. Anyone who knows the address can still read events, so treat published content as public unless it is encrypted.

Features

  • Fast strfry relay with an LMDB database stored in Cloudron backups
  • Write allowlist of npub or hexadecimal public keys, read on every event, so changes apply without a restart
  • Starts closed: an empty allowlist rejects every write
  • NIP-11 relay information (name, description, contact, operator key) set through app environment variables
  • Real client IP addresses from Cloudron's reverse proxy
Screenshot

Recent Changes

  • The post-install message shows the wss:// relay URL and how to edit the allowlist from the File Manager or Web Terminal.

  • A dashboard checklist item reminds you to add the first allowlist key.