npub.world

A Nostr profile search engine, viewer, and discovery app.

What is npub.world?

npub.world is a web application for searching, viewing, and discovering Nostr profiles. It lets you search for Nostr users by name, public key, or NIP-05 identifier, view detailed profile information including reputation and top followers, and discover new people through algorithm-powered recommendations.

Features

• Search Nostr Profiles
  Enter a name, public key, NIP-05, or other identifier to find profiles.
• Profile & Reputation Viewer
  View detailed information about any Nostr profile, including bio, website, lightning address, reputation status, and top followers.
• Discovery
  Discover new people on Nostr through algorithm-powered recommendations.
• Open Ranking Agnostic
  Switch to any compatible Open Ranking provider, and select any algorithm the provider supports.
• Real-time Statistics
  Analyse spam-free statistics about the Nostr network, including total and active users and number of posts.

Tech Stack

• Frontend: SvelteKit (SSR, fast page loads)
• Nostr: nostr-tools for encoding/decoding and event signing
• Ranking: open-ranking JS SDK for reputation, search, discovery, and statistics

Development

Make sure to have node and pnpm installed.

1. Install dependencies:

   pnpm install

2. Configure Environment Variables

   • REDIS_ADDRESS: Address where Redis is running (required for statistics)

3. Run the dev server:

   export $(grep -v '^#' .env | xargs) && pnpm dev -- --host 0.0.0.0

Credits

• Default provider is Vertex
• Designed by Vlad