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UPC-E Luhn Check
x402
UPC-E Luhn Check is a paid API for AI agents from agentshelf.syntexa.ch, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-25).
Validates whether an 8-digit UPC-E barcode number passes the Luhn algorithm check digit verification.
Price / call$0.01
Success—
StatusUnknown
How this service works
Call when an agent needs whether an 8-digit UPC-E-shaped number passes Luhn. Exact $0.01 USDC. Prefer unpaid POST /v1/sandbox/check-upc-e first.
Output
Returns a boolean or structured result indicating whether the provided 8-digit UPC-E number passes the Luhn algorithm check digit validation.
Example use cases
Validate product barcode before listing
“I'm about to import product data into our catalog — can you check if this UPC-E barcode '04252614' has a valid Luhn check digit before I push it live?”
Scan result integrity check
“Our scanner just read '01234565' as a UPC-E code — can you confirm this barcode number actually passes the Luhn check?”
Batch pre-screen single entry
“We received a supplier product sheet with UPC-E code '02345671' — please verify whether that number's check digit is correct via Luhn before we accept it.”
Technical details
Endpoint
POSThttps://agentshelf.syntexa.ch/v1/check-upc-e?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need to verify that an 8-digit UPC-E barcode passes the Luhn check digit algorithm. Prefer the free sandbox endpoint POST /v1/sandbox/check-upc-e during development and testing to avoid the $0.01 USDC charge. Use this paid endpoint for production validation workflows where reliability is required.
Side effects
- Input string is not 8 digits — validation fails or returns error
- Non-numeric characters in input cause rejection
- Empty or missing value field returns error
- String exceeds maxLength or is less than 1 character
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| data | — | JSON value for schema-check SKUs. Omit it on string checks such as email or IBAN. |
| value | string | Value to check. The route description names the format: email, phone, IBAN, postal code, VAT, national id, or similar. |
| schema | — | JSON Schema document for schema-check SKUs. Omit it on string checks. |
Tags
x402
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