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API
Relays

GroundingLab Nostr

Online
wss://relay.groundinglab.io

GroundingLab / PCOC relay. Public read; writes limited to GroundingLab keys.

Read-only
ScoreScore: 72

Connection

Connect
7.2 s
Read
343 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
1
Notes in the last hour
0

Access & policy

Authentication (NIP-42)
No
Payment required
No
Restricted writes
Yes
Sends AUTH challenge
No
Minimum PoW (NIP-13)
None
Write test
Rejected: blocked: pubkey not on the relay.groundinglab.io write allowlist

Limits

Max message length
1.2M
Max subscriptions
50
Max filter limit
500
Max content length
—n/a
Max event tags
—n/a

Overview

Software
strfry
Version
1.1.3
Contact
—n/a
Countries
—n/a
Languages
—n/a
First seen
Nov 5, 2026, 9:49 PM UTC
Discovered via
nip66

NIP-11 document

{
  "name": "GroundingLab Nostr",
  "description": "GroundingLab / PCOC relay. Public read; writes limited to GroundingLab keys.",
  "pubkey": "77bb660736f083e73897d8c907623109535a398ac4b5440b5a8d9a806e318a3c",
  "supported_nips": [
    1,
    2,
    4,
    9,
    11,
    28,
    40,
    45,
    70,
    77
  ],
  "software": "git+https://github.com/hoytech/strfry.git",
  "version": "1.1.3",
  "limitation": {
    "max_message_length": 1179648,
    "max_subscriptions": 50,
    "max_limit": 500
  }
}

Use this data

View JSON
curl
curl "/api/v1/relays/relay.groundinglab.io"