Counts supplied outcomes, computes Pearson’s chi-square statistic, and estimates
Counts supplied outcomes, computes Pearson’s chi-square statistic, and estimates an upper-tail p-value with the Wilson-Hilferty normal approximation. It tests aggregate frequencies only; it cannot prove draw independence, seed fairness, code integrity, or manipulation, especially when expected counts are small.
Answeringour last check, 2026-09-24
1 of 1checks answered this week
899 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://gaming.halowerk.com/v1/gacha-rng-verify
| Category | Code and developer |
|---|---|
| Provider host | gaming.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 |
|---|---|---|---|---|
| 2026-09-24 | valid payment request | 402 | $0.004 | 899 ms |
Example input (from the provider)
{
"body": {
"alpha": 0.05,
"draws": [
"common",
"common",
"rare",
"common",
"common",
"common",
"rare",
"common",
"common",
"legendary",
"common",
"common",
"rare",
"common",
"common",
"common",
"rare",
"common",
"common",
"common"
],
"outcomes": [
{
"outcome": "common",
"probability": 0.8
},
{
"outcome": "rare",
"probability": 0.18
},
{
"outcome": "legendary",
"probability": 0.02
}
]
},
"bodyType": "json",
"method": "POST",
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"additionalProperties": false,
"properties": {
"alpha": {
"maximum": 0.5,
"minimum": 1e-06,
"type": "number"
},
"draws": {
"items": {
"maxLength": 128,
"minLength": 1,
"type": "string"
},
"maxItems": 100000,
"minItems": 10,
"type": "array"
},
"outcomes": {
"items": {
"additionalProperties": false,
"properties": {
"outcome": {
"maxLength": 128,
"minLength": 1,
"type": "string"
},
"probability": {
"maximum": 1,
"minimum": 1e-09,
"type": "number"
}
},
"required": [
"outcome",
"probability"
],
"type": "object"
},
"maxItems": 100,
"minItems": 2,
"type": "array"
}
},
"required": [
"outcomes",
"draws"
],
"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"
}