Compare a caller-supplied candidate CSV with a caller-supplied known-good baseli
Compare a caller-supplied candidate CSV with a caller-supplied known-good baseline and return deterministic structural drift evidence.
Answeringour last check, 2026-09-24
1 of 1checks answered this week
564 msmedian answer time
$0.015listed price per call
$0.015price 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://foundry-csv-drift-evidence-mainnet.inference-chip-index.workers.dev/v1/csv/drift
| Category | Everything else |
|---|---|
| Provider host | foundry-csv-drift-evidence-mainnet.inference-chip-index.workers.dev |
| Networks | eip155:8453 |
| Payment schemes | exact |
| Self-reported calls, 30 days | 2 from 2 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-09-24 | valid payment request | 402 | $0.015 | 564 ms |
Example input (from the provider)
{
"body": {
"allowedNewColumns": [
"source"
],
"baselineCsv": "id,score,region\n1,0.7,AU\n2,0.9,US\n",
"candidateCsv": "id,score,region,source\n3,1.2,,api\n4,0.8,AU,api\n",
"missingRateReviewDelta": 0.1,
"numericRangeColumns": [
"score"
]
},
"bodyType": "json",
"method": "POST",
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"additionalProperties": false,
"properties": {
"allowedNewColumns": {
"description": "New candidate columns that should not reduce the score.",
"items": {
"maxLength": 256,
"minLength": 1,
"type": "string"
},
"maxItems": 200,
"type": "array",
"uniqueItems": true
},
"baselineCsv": {
"description": "Known-good CSV including one header row.",
"maxLength": 250000,
"minLength": 1,
"type": "string"
},
"candidateCsv": {
"description": "Candidate CSV to compare with the baseline.",
"maxLength": 250000,
"minLength": 1,
"type": "string"
},
"missingRateReviewDelta": {
"default": 0.1,
"description": "Absolute missing-rate change that is reported for review.",
"maximum": 1,
"minimum": 0,
"type": "number"
},
"numericRangeColumns": {
"description": "Baseline numeric columns whose observed range should be checked.",
"items": {
"maxLength": 256,
"minLength": 1,
"type": "string"
},
"maxItems": 200,
"type": "array",
"uniqueItems": true
}
},
"required": [
"baselineCsv",
"candidateCsv"
],
"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": {
"additionalProperties": false,
"properties": {
"addedColumns": {
"items": {
"type": "string"
},
"type": "array"
},
"baselineRows": {
"maximum": 20000,
"minimum": 0,
"type": "integer"
},
"candidateRows": {
"maximum": 20000,
"minimum": 0,
"type": "integer"
},
"disallowedAddedColumns": {
"items": {
"type": "string"
},
"type": "array"
},
"disposition": {
"enum": [
"PASS",
"REVIEW",
"FAIL"
],
"type": "string"
},
"evidenceFingerprint": {
"pattern": "^[0-9a-f]{64}$",
"type": "string"
},
"missingRateChanges": {
"items": {
"additionalProperties": false,
"properties": {
"baseline": {
"type": "number"
},
"candidate": {
"type": "number"
},
"column": {
"type": "string"
},
"delta": {
"type": "number"
}
},
"required": [
"column",
"baseline",
"candidate",
"delta"
],
"type": "object"
},
"type": "array"
},
"numericRangeExcursions": {
"items": {
"additionalProperties": false,
"properties": {
"above": {
"minimum": 0,
"type": "integer"
},
"baselineMaximum": {
"type": "number"
},
"baselineMinimum": {
"type": "number"
},
"below": {
"minimum": 0,
"type": "integer"
},
"column": {
"type": "string"
}
},
"required": [
"column",
"baselineMinimum",
"baselineMaximum",
"below",
"above"
],
"type": "object"
},
"type": "array"
},
"product": {
"const": "csv-drift-evidence",
"type": "string"
},
"removedColumns": {
"items": {
"type": "string"
},
"type": "array"
},
"reorderedColumns": {
"type": "boolean"
},
"score": {
"maximum": 100,
"minimum": 0,
"type": "integer"
},
"typeChanges": {
"items": {
"additionalProperties": false,
"properties": {
"baseline": {
"type": "string"
},
"candidate": {
"type": "string"
},
"column": {
"type": "string"
}