Human or synthetic?
Human or synthetic? Provenance evidence for a URL: archive first-capture date, domain age, authorship markup, curated source tier, AI disclosures and stylometric signals, aggregated into a calibrated 0-100 human-origin score with every piece of evidence. Add deep=true for an LLM stylometric assessment.
Answeringour last check, 2026-09-24
1 of 1checks answered this week
232 msmedian answer time
$0.01listed price per call
$0.01price 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://toll402.dev/v1/provenance
| Category | Everything else |
|---|---|
| Provider host | toll402.dev |
| Networks | eip155:8453 |
| Payment schemes | exact |
| Self-reported calls, 30 days | 3 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 | $0.01 | 232 ms |
Example input (from the provider)
{
"body": {
"deep": false,
"url": "https://en.wikipedia.org/wiki/Turing_test"
},
"bodyType": "json",
"method": "POST",
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"additionalProperties": false,
"properties": {
"deep": {
"default": true,
"description": "Also run an LLM stylometric assessment (only when the server has an LLM key)",
"type": "boolean"
},
"url": {
"description": "Public URL to assess",
"format": "uri",
"type": "string"
}
},
"required": [
"url"
],
"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": {
"properties": {
"ms": {
"type": "integer"
},
"ok": {
"type": "boolean"
},
"result": {
"properties": {
"confidence": {
"type": "number"
},
"evidence": {
"items": {
"properties": {
"direction": {
"type": "string"
},
"signal": {
"type": "string"
},
"value": {
"type": "string"
}
},
"type": "object"
},
"type": "array"
},
"firstArchived": {
"type": "string"
},
"humanOriginScore": {
"type": "integer"
},
"source": {
"properties": {
"tier": {
"type": "integer"
}
},
"type": "object"
},
"verdict": {
"type": "string"
}
},
"type": "object"
},
"tool": {
"type": "string"
}
},
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}