Collects kind 9735 zap receipts addressed to one public key over up to twelve re
Collects kind 9735 zap receipts addressed to one public key over up to twelve relays, merges them by event id and reports who sent how much over the requested window. Every amount comes from decoding the BOLT-11 invoice carried in the receipt, not from the amount tag of the zap request, because the two can disagree and only the invoice was payable.
Answeringour last check, 2026-10-10
1 of 1checks answered this week
894 msmedian answer time
$0.004listed price per call
$0.004price it asked us
Paid test badge: not yet. The checks above are free: we call the tool without paying and read the payment request it sends back. The Verified badge needs paid calls whose answers match the promised output, and nobody can buy a badge.
Endpoint
POST https://nostr.halowerk.com/zap-radar
| Category | Everything else |
|---|---|
| Provider host | nostr.halowerk.com |
| Networks | eip155:8453 |
| Payment schemes | exact |
| Self-reported calls, 30 days | 1 from 1 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-10-10 | valid payment request | 402 | $0.004 | 894 ms |
Example input (from the provider)
{
"body": {
"pubkey": "beispiel"
},
"bodyType": "json",
"method": "POST",
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"additionalProperties": false,
"properties": {
"days": {
"default": 30,
"description": "Length of the window in days, counted back from now.",
"maximum": 365,
"minimum": 1,
"type": "integer"
},
"max_receipts": {
"default": 200,
"description": "Upper bound on receipts fetched per relay. Reaching it sets truncated.",
"maximum": 400,
"minimum": 10,
"type": "integer"
},
"pubkey": {
"description": "Recipient public key as 64 hex characters, npub or nprofile.",
"type": "string"
},
"relays": {
"description": "wss relay addresses. Left empty, ten measured default relays are used.",
"items": {
"type": "string"
},
"maxItems": 12,
"type": "array"
},
"top_senders": {
"default": 10,
"description": "How many senders the ranking lists.",
"maximum": 50,
"minimum": 1,
"type": "integer"
}
},
"required": [
"pubkey"
],
"type": "object"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
},
"method": {
"enum": [
"POST",
"PUT",
"PATCH"
],
"type": "string"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method",
"bodyType",
"body"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}