Kosmos Relay

Online

wss://nostr.kosmos.org

Members-only nostr relay for kosmos.org users

Read-only

Score75

Connection

Connect: 2.8 s
Read: 3 ms
Write: —n/a
Network: Clearnet
Last checked: 2 hours ago
Last online: 2 hours ago

Uptime

Last 24 hours: 100%
Last 7 days: 100%

Each bar is one check (every 6 hours), newest on the right.

Popularity

Listed by users: 0
as read relay: 0
as write relay: 0
NIP-66 monitors: 3
Notes in the last hour: 0

Supported NIPs

Access & policy

Authentication (NIP-42): No
Payment required: No
Restricted writes: No
Sends AUTH challenge: No
Minimum PoW (NIP-13): None
Write test: Rejected: Only members can publish notes on this relay

Limits

Max message length: 131K
Max subscriptions: 200
Max filter limit: 500
Max content length: —n/a
Max event tags: —n/a

Overview

Software: strfry
Version: 1.1.1
Contact: ops@kosmos.org
Countries: —n/a
Languages: —n/a
First seen: Oct 30, 2026, 12:17 AM UTC
Discovered via: nip66

NIP-11 document

{
  "name": "Kosmos Relay",
  "description": "Members-only nostr relay for kosmos.org users",
  "icon": "https://assets.kosmos.org/img/app-icon-256px.png",
  "pubkey": "b3e1b7c0ef48294bd856203bfd460625de95d3afb894e5f09b14cd1f0e7097cf",
  "contact": "ops@kosmos.org",
  "supported_nips": [
    1,
    2,
    4,
    9,
    11,
    28,
    40,
    45,
    70,
    77
  ],
  "software": "git+https://github.com/hoytech/strfry.git",
  "version": "1.1.1",
  "limitation": {
    "max_message_length": 131072,
    "max_subscriptions": 200,
    "max_limit": 500
  }
}

Use this data

View JSON

curl

curl "/api/v1/relays/nostr.kosmos.org"