Nostr Relay NestJS

Powered by nostr-relay & NestJS.

A high-performance nostr relay, using PostgreSQL.

If you'd like to help me test the reliability of this relay implementation, you can add wss://nostr-relay.app to your relay list (it's free) 💜⚡️

Note: Please use the released version of this code. The latest version may contain changes to migration scripts and other elements that are not finalized.

Features

🟢 Full implemented 🟡 Partially implemented 🔴 Not implemented

Feature	Status	Note
NIP-01: Basic protocol flow description	🟢
NIP-02: Follow List	🟢
NIP-04: Encrypted Direct Message	🟢
NIP-05: Mapping Nostr keys to DNS-based internet identifiers	🟢
NIP-09: Event Deletion	🔴	No real deletion in a distributed system
NIP-11: Relay Information Document	🟢
NIP-13: Proof of Work	🟢
NIP-22: Event created_at Limits	🟢
NIP-26: Delegated Event Signing	🟢
NIP-28: Public Chat	🟢
NIP-40: Expiration Timestamp	🟢
NIP-42: Authentication of clients to relays	🟢
NIP-45: Counting results	🔴
NIP-50: Keywords filter	🟢

Extra Features

WoT (Web of Trust)

If you want to enable the WoT feature, you need to set the following environment variables:

• WOT_TRUST_ANCHOR_PUBKEY: The public key of the trust anchor. Trust anchor is the root of the trust net.
• WOT_TRUST_DEPTH: The depth of the trust net. If the trust depth is 1, the trust net will include the trust anchor and the trust anchor's following users. If the trust depth is 2, the trust net will include the trust anchor, the trust anchor's following users, and the trust anchor's following users' following users. Now the maximum trust depth is 2.
• WOT_FETCH_FOLLOW_LIST_FROM: Comma-separated list of relay URLs to fetch follow list from (e.g., WOT_FETCH_FOLLOW_LIST_FROM=wss://nostr-relay.app,wss://relay.damus.io). This environment variable is optional. The relay will always fetch the follow list from the local database first.

RESTful API

You can see the API documentation at /api endpoint. Example

TOP verb

TOP verb accepts a subscription id and filters as specified in NIP 01 for the verb REQ.

["TOP",<subscription_id>,<filters JSON>...]

And return the top N event IDs with the highest score (Scoring is determined by relay).

["TOP",<subscription_id>,<event id array>]

Example:

["TOP","test",{"search":"nostr bitcoin","kinds":[30023],"limit":10}]

["TOP","test",["2359f4bdfe0bd2353aa7702dc1af23279197694823b8b4916b904a9940334192","622a875c9f9a4696eb4050fa5b0bba3a9b0531ec4a27398245af7369e6d40da8","d8989c65d26511b2e3ea42b0ebfcaf0ea885cb958419df4ddb334cb72556f950","ffcb0c9e0ace0b5d3928f30395bc9832763f8b583f2b1beb696f7c199f9f94d2","287147867bd00299553fa91e110d40206eea19a9142a4283832ee67e1407e6f2","ffaea8bc3b08db32af97f1ff595e68eee8a2f7b0a4a66dc2eff330f450855f6c","cddbc6cd4a0589d4a593e99a3a94426c85c6867b47d7eb751ce419c27f079b76","f2291ac6d206e898965b9e4ba6bbe5bb10118e6a74bd9f9f13597813979a254b","a101a2a44938dbb0a611bc00bd7ed4cb44d682fea4c14618bd1148567cd6fcc3","21990a723b491b6c594438a2ecf5d5e4898212635f59e82f1c736d994a86e907"]]

Quick Start

Dockerfile

Build image

./scripts/build.sh

Create .env file based on example.env file

DATABASE_URL=postgresql://username:password@host:port/database

Run container

./scripts/run.sh

Local Development

First of all, you need to have a PostgreSQL database running.

Clone the repository and install dependencies

git clone https://github.com/CodyTseng/nostr-relay-nestjs.git
cd nostr-relay-nestjs
npm install

Create .env file based on example.env file

DATABASE_URL=postgresql://username:password@host:port/database

Execute migration scripts

npm run migration:run

Start the server

npm run start

Running as a systemd service

It is best practice to not run services as root where possible. If you want to ignore that, remove the User and Group lines from the service file. Otherwise, start with creating a locked down user to run the service as

useradd --shell /bin/false nestjs
usermod -L nestjs
chown -R nestjs:nestjs /opt/nostr-relay-nestjs
chmod g+s /opt/nostr-relay-nestjs

The last two lines assume you cloned the project to /opt/nostr-relay-nestjs, update them as needed.

To create the service file, copy and paste the below to /etc/systemd/system/nostr-relay-nestjs.service

[Unit]
Description=Nostr Relay Nestjs Service
After=network.target

[Service]
User=nestjs
Group=nestjs
ExecStart=/usr/bin/npm run start
WorkingDirectory=/opt/nostr-relay-nestjs
Restart=always
MemoryMax=2G

[Install]
WantedBy=multi-user.target

Run sudo systemctl daemon-reload

Start, stop or check status with systemctl start|stop|status nostr-relay-nestjs

Metrics

You can view some simple relay metrics on /metrics endpoint.

TODO

• Unit test
• RESTful API
• Metrics, Monitoring and Alerting
• Support multi nodes
• Support for Bitcoin Lightning Network payments

Architecture

Donate

If you like this project, you can buy me a coffee :) ⚡️ codytseng@getalby.com ⚡️

License

This project is MIT licensed.