Check whether datasets that are meant to be disjoint share any keys
Check whether datasets that are meant to be disjoint share any keys. A key in both a training and an evaluation split means the evaluation is measuring memorisation, and every figure computed from it is optimistic. Reports overlap per pair with the share of the smaller set, since that is the one whose measurements are compromised, plus keys appearing in every dataset.
Answers HTTP 429 without x402 payment termsour last check, 2026-10-04
0 of 1checks answered this week
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$0.16listed price per call
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Paid test badge: not yet. The checks above are free: we call the tool without paying and read the payment request it sends back. The Verified badge needs paid calls whose answers match the promised output, and nobody can buy a badge.
Endpoint
POST https://api.zfinia.com/x402/v1/dataset-overlap-audit
| Category | Code and developer |
|---|---|
| Provider host | api.zfinia.com |
| Networks | eip155:8453 |
| Payment schemes | exact |
| Self-reported calls, 30 days | 1 from 1 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-10-04 | no x402 terms | 429 | 269 ms |
Example input (from the provider)
{
"body": {
"datasets": [
{
"csv": "customer_id,label\nC-001,1\nC-002,0\nC-003,1\nC-004,0\n",
"name": "train"
},
{
"csv": "customer_id,label\nC-003,1\nC-005,0\n",
"name": "evaluation"
},
{
"csv": "customer_id,label\nC-006,1\n",
"name": "holdout"
}
],
"key": [
"customer_id"
]
},
"bodyType": "json",
"method": "POST",
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"additionalProperties": false,
"properties": {
"datasets": {
"items": {
"additionalProperties": false,
"properties": {
"csv": {
"maxLength": 262144,
"type": "string"
},
"name": {
"maxLength": 64,
"type": "string"
}
},
"required": [
"name",
"csv"
],
"type": "object"
},
"maxItems": 10,
"minItems": 2,
"type": "array"
},
"delimiter": {
"maxLength": 1,
"minLength": 1,
"type": "string"
},
"expect_disjoint": {
"type": "boolean"
},
"key": {
"items": {
"maxLength": 256,
"type": "string"
},
"maxItems": 4,
"minItems": 1,
"type": "array"
}
},
"required": [
"datasets",
"key"
],
"type": "object"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
},
"method": {
"enum": [
"POST"
],
"type": "string"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method",
"bodyType",
"body"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}