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Foundry CSV Cross-File Key Integrity Validator
x402
Foundry CSV Cross-File Key Integrity Validator is a paid API for AI agents from foundry-par007-machine-revenue-mainnet.inference-chip-index.workers.dev, paid per call via x402, $0.012/call, status unknown (last checked 2026-09-14).
Validates referential integrity between two CSV files by checking whether all keys in a child CSV exist in a parent CSV, returning match/orphan/blank counts and SHA-256 hashes as evidence.
Price / call$0.012
Success—
StatusUnknown
How this service works
Pay-per-request evidence and data tools: CSV validation and reconciliation, DNS/email configuration evidence, and bounded official weather, earthquake, vehicle, company and study records. Exact USDC prices, explicit JSON contracts and source provenance. No mailbox, ownership, medical or safety guarantees.
Output
A JSON object containing: a PASS or FAIL status; counts and row-level details of orphaned child rows (keys not found in parent), blank child/parent rows, and duplicate parent keys; the count of successfully matched child rows; SHA-256 hashes of both input CSVs for audit provenance; an observed_at timestamp; an evidence_truncated flag if row lists were capped; and a limitations array noting any caveats about the result.
Example use cases
Pre-import database integrity check
“Before I load these two CSVs into Postgres, can you verify that every `customer_id` value in the transactions CSV actually exists in the customers CSV? Use `id` as the parent key and reject any blank transaction customer_ids. Show me which rows are orphans.”
Compliance audit trail for data reconciliation
“I need a tamper-evident check showing that all `invoice_number` entries in my payments CSV match records in the master invoices CSV — use `invoice_no` as the parent key, trim whitespace from both keys, and give me the SHA-256 hashes and orphan list for our compliance records.”
ETL pipeline data quality gate
“Run a referential integrity check on these two CSVs: the child file has a column called `product_sku` and the parent catalog uses `sku`. Ignore any blank SKUs in the child file and tell me how many rows passed, how many are orphans, and whether any parent SKUs appear more than once.”
Technical details
Endpoint
POSThttps://foundry-par007-machine-revenue-mainnet.inference-chip-index.workers.dev/v2/data/csv-cross-file-key-integrityWhen to prefer
Choose this endpoint when you need verifiable, evidence-grade referential integrity checking between two CSV datasets with cryptographic provenance (SHA-256 hashes) and explicit per-row orphan/duplicate reporting — especially for compliance, audit, or pre-import ETL validation workflows. Prefer it over ad-hoc scripting when you need a pay-per-call, stateless check with no infrastructure setup and a machine-readable JSON contract.
Side effects
- CSV exceeds 12,000 character limit — request rejected
- blank_child_keys set to 'reject' and blank keys present — FAIL status returned with blank_child_rows populated
- child_key or parent_key column name not found in respective CSV — error or unexpected FAIL
- Malformed CSV (unbalanced quotes, inconsistent columns) — parsing error
- Payment of $0.012 USDC not received — HTTP 402 returned before processing
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| child_csv | string | |
| child_key | string | |
| trim_keys | boolean | |
| parent_csv | string | |
| parent_key | string | |
| blank_child_keys | string |
Output
Schema · Response
{
"type": "json",
"example": {
"route": "csv-cross-file-key-integrity",
"result": {
"status": "PASS",
"child_rows": 2,
"limitations": [
"Synthetic example hashes."
],
"parent_rows": 2,
"child_sha256": "0000000000000000000000000000000000000000000000000000000000000000",
"orphan_count": 0,
"parent_sha256": "0000000000000000000000000000000000000000000000000000000000000000",
"blank_child_rows": [],
"blank_child_count": 0,
"blank_parent_rows": [],
"orphan_child_rows": [],
"blank_parent_count": 0,
"evidence_truncated": false,
"matched_child_rows": 2,
"duplicate_parent_rows": [],
"duplicate_parent_count": 0
},
"observed_at": "2026-09-06T00:00:00Z"
}
}Tags
x402
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