Compare a caller-supplied candidate CSV with a caller-supplied known-good baseline and ret
Compare a caller-supplied candidate CSV with a caller-supplied known-good baseline and return deterministic structural drift evidence.
15000 (raw units)
price
2
calls / 30d
2
unique payers
2026-09-01
updated
Provider
foundry-csv-drift-evidence-mainnet.inference-chip-index.workers.dev · discovered, not yet claimed by its owner
Payment (x402 accepts[])
[
{
"scheme": "exact",
"network": "eip155:8453",
"payTo": "0x25e8245f07d5e4873987293dad666afbe56a9608",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"amount": "15000",
"maxTimeoutSeconds": 60
}
]Output schema
{
"bazaar": {
"info": {
"input": {
"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"
},
"output": {
"example": {
"addedColumns": [
"source"
],
"baselineRows": 2,
"candidateRows": 2,
"disallowedAddedColumns": [],
"disposition": "REVIEW",
"evidenceFingerprint": "15a1c350fa3d73358e9e0d846942c90e31a8923cbf6f41bcb2c10030505357a3",
"missingRateChanges": [
{
"baseline": 0,
"candidate": 0.5,
"column": "region",
"delta": 0.5
}
],
"numericRangeExcursions": [
{
"above": 1,
"baselineMaximum": 0.9,
"baselineMinimum": 0.7,
"below": 0,
"column": "score"
}
],
"product": "csv-drift-evidence",
"removedColumns": [],
"reorderedColumns": false,
"score": 88,
"typeChanges": [],
"version": "1.0.0"
},
"type": "json"
}
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"additionalProperties": false,
"properties": {
"allowedNewColumns": {
"description": "New candidate columns that should not reduce the score.",
"items": {
"maxLength": 256,
"minLength": 1,
"type": "string"
},
"maxItems": 200,
"type": "array",
"uniqueItems": true
},
"baselineCsv": {
"description": "Known-good CSV including one header row.",
"maxLength": 250000,
"minLength": 1,
"type": "string"
},
"candidateCsv": {
"description": "Candidate CSV to compare with the baseline.",
"maxLength": 250000,
"minLength": 1,
"type": "string"
},
"missingRateReviewDelta": {
"default": 0.1,
"description": "Absolute missing-rate change that is reported for review.",
"maximum": 1,
"minimum": 0,
"type": "number"
},
"numericRangeColumns": {
"description": "Baseline numeric columns whose observed range should be checked.",
"items": {
"maxLength": 256,
"minLength": 1,
"type": "string"
},
"maxItems": 200,
"type": "array",
"uniqueItems": true
}
},
"required": [
"baselineCsv",
"candidateCsv"
],
"type": "object"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
},
"method": {
"enum": [
"POST"
],
"type": "string"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method",
"bodyType",
"body"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"additionalProperties": false,
"properties": {
"addedColumns": {
"items": {
"type": "string"
},
"type": "array"
},
"baselineRows": {
"maximum": 20000,
"minimum": 0,
"type": "integer"
},
"candidateRows": {
"maximum": 20000,
"minimum": 0,
"type": "integer"
},
"disallowedAddedColumns": {
"items": {
"type": "string"
},
"type": "array"
},
"disposition": {
"enum": [
"PASS",
"REVIEW",
"FAIL"
],
"type": "string"
},
"evidenceFingerprint": {
"pattern": "^[0-9a-f]{64}$",
"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"
}
},
"required": [
"column",
"baseline",
"candidate"
],
"type": "object"
},
"type": "array"
},
"version": {
"const": "1.0.0",
"type": "string"
}
},
"required": [
"product",
"version",
"disposition",
"score",
"baselineRows",
"candidateRows",
"removedColumns",
"addedColumns",
"disallowedAddedColumns",
"reorderedColumns",
"typeChanges",
"missingRateChanges",
"numericRangeExcursions",
"evidenceFingerprint"
],
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}
}
}Use it
curl
curl "https://foundry-csv-drift-evidence-mainnet.inference-chip-index.workers.dev/v1/csv/drift" # -> 402 Payment Required, accepts[] lists how to pay # retry with a PAYMENT-SIGNATURE (or PAYMENT header) once paid
JavaScript
const res = await fetch("https://foundry-csv-drift-evidence-mainnet.inference-chip-index.workers.dev/v1/csv/drift");
if (res.status === 402) {
const { accepts } = await res.json();
// pay one of accepts[] via an x402 client, then retry with the payment header
}Python
import httpx
res = httpx.get("https://foundry-csv-drift-evidence-mainnet.inference-chip-index.workers.dev/v1/csv/drift")
if res.status_code == 402:
accepts = res.json()["accepts"]
# pay one of accepts[] via an x402 client, then retry with the payment headerMachine-readable
Everything on this page is also available as clean JSON at /resources/8354.json, and this resource appears in /discovery/resources and /discovery/search.