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Delx Commerce CSV Duplicate Key Check
x402
Delx Commerce CSV Duplicate Key Check is a paid API for AI agents from commerce.delx.ai, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-01).
Detects duplicate rows in CSV text based on one or more specified key columns, returning which rows are duplicates.
Price / call$0.001
Success—
StatusUnknown
How this service works
Pay-per-result APIs for agents. No signup. Exact price. Verifiable delivery. USDC on Base + Solana via x402.
Output
Returns a JSON object indicating whether the CSV is unique (true/false), a list of row indices that are duplicates, the operation schema identifier, a status of 'advisory', and evidence metadata including whether input was retained (always false), the SHA-256 hash of the input, and the number of external calls made (always 0).
Example use cases
Deduplicating customer import file
“I'm about to import this customer CSV into our CRM — can you check if there are any duplicate rows based on the 'email' column before I do?”
Validating composite key uniqueness in orders
“Here's our orders export CSV. Check if any rows share the same 'order_id' and 'line_item_id' combination — I need to make sure no composite keys are repeated.”
Audit data pipeline output for duplicates
“Our data pipeline produced this CSV. Can you check if the 'transaction_id' column has any duplicates and tell me which row numbers are affected?”
Technical details
Endpoint
POSThttps://commerce.delx.ai/api/v1/x402/csv-duplicate-key-check?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a lightweight, pay-per-call, no-signup check for CSV duplicate keys without sending data to a persistent storage service. Ideal for agents that process CSV data in-flight and need a verifiable, tamper-evident deduplication check (SHA-256 evidence hash included). Prefer this over full ETL or database-based deduplication when data must not be retained and when exact per-call pricing via USDC micropayment is acceptable.
Side effects
- CSV text exceeds 8192 character limit — request rejected
- key_columns references column names not present in the CSV header — may return unexpected results or error
- Malformed CSV text (missing headers, inconsistent delimiters) — parsing may fail or yield incorrect results
- Empty key_columns array — behavior undefined, may treat all columns as key or return error
- More than 256 key columns specified — request rejected per schema maxItems constraint
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| text | string | Text supplied to CSV Duplicate Key Check; used only for this bounded calculation and processed in memory without retention. |
| key_columns | array | Key Columns supplied to CSV Duplicate Key Check; used only for this bounded calculation and processed in memory without retention. |
Output
Schema · Response
{
"type": "json",
"example": {
"result": {
"unique": false,
"duplicate_rows": [
3
]
},
"schema": "delx/util-csv-duplicate-key-check/v1",
"status": "advisory",
"evidence": {
"retained": false,
"input_sha256": "9046a42812db7833761b9aee29de477ebae24f4c8ae2087d757d328905d6db58",
"external_calls": 0
},
"operation": "data_batch:csv_duplicate_key_check"
}
}Tags
x402
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