Muxstr is a Nostr relay providing gRPC, HTTP/JSON, and WebSocket interfaces.

Connection Endpoints

gRPC (Native Binary)

muxstr.x.bdw.to:443

High-performance binary protocol using Protocol Buffers over HTTP/2.

HTTP/JSON

https://muxstr.x.bdw.to/nostr.v1.NostrRelay/*

Browser-compatible HTTP interface. Standard JSON over HTTP/1.1 or HTTP/2. CORS enabled.

WebSocket (Nostr Protocol)

wss://muxstr.x.bdw.to/

Standard Nostr protocol implementation (NIP-01) compatible with all Nostr clients.

Supported NIPs

• NIP-01 - Basic protocol flow (EVENT, REQ, CLOSE)
• NIP-09 - Event deletion
• NIP-11 - Relay information document

Implementation Details

Storage: SQLite with Write-Ahead Logging
Event Format: Binary-first (Protocol Buffers + compressed JSON)
Validation: Full cryptographic signature and event ID verification
Subscriptions: Real-time event streaming with filter matching
Deletion: Hard delete (events are permanently removed)

Technical Notes

Events are stored in binary format using Protocol Buffers alongside compressed canonical JSON. This dual-storage approach provides both performance (binary queries) and compatibility (JSON export).

The relay validates all events before storage:

1. Verify event ID matches SHA256(canonical_json)
2. Verify schnorr signature against pubkey
3. Store in SQLite with indexed queries

Subscriptions use a shared manager across all three protocols. An event published via gRPC will be immediately broadcast to WebSocket subscribers and vice versa.

This relay is free open-source software.