mruby Nostr Relay

A lightweight, single-binary Nostr relay implementation for mruby.

This relay supports the following Nostr Implementation Possibilities (NIPs):

• NIP-01: Basic protocol flow
• NIP-09: Event deletion (kind 5)
• NIP-11: Relay Information Document
• NIP-12: Generic tag queries (#e, #p, etc)
• NIP-16: Event Treatment (ephemeral events 20000-29999)
• NIP-20: Command results (OK messages)
• NIP-26: Delegated Event Signing (delegation tag verification)
• NIP-33: Parameterized Replaceable Events (kind 30000-39999)
• NIP-70: Protected Events (reject events with ["-"] tag)

$DATABASE_URL = "host=localhost dbname=nostr"
make run

The relay will start on ws://localhost:8080 by default.

git clone <repository-url>
cd mruby-nostr-relay

make

• GCC / G++
• Ruby (for mruby build system)
• PostgreSQL
• libsecp256k1
• libonig (Oniguruma)
• libssl / libcrypto (OpenSSL)

sudo apt-get install gcc g++ make ruby git \
  libsecp256k1-dev libpq-dev libonig-dev libssl-dev

docker build -t mruby-nostr-relay .
docker run -p 8080:8080 mruby-nostr-relay

MIT License

Yasuhiro Matsumoto (a.k.a. mattn)