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GS1 Check Digit Calculator
x402
GS1 Check Digit Calculator is a paid API for AI agents from trade.chainverdict.xyz, paid per call via x402, $0.004/call, status unknown (last checked 2026-09-15).
Computes the GS1 check digit for a code body (GTIN, SSCC, etc.) that is missing its final check digit.
Price / call$0.004
Success—
StatusUnknown
How this service works
Compute the GS1 check digit for a code body missing it.
Output
Returns the computed GS1 check digit (a single numeric digit, 0–9) for the supplied code body, allowing the caller to reconstruct the complete, valid GS1 identifier.
Example use cases
Completing a new product barcode
“I'm creating a new product listing and have the GTIN body '00614141007346' without its check digit — can you calculate the correct check digit so I can print the barcode?”
Debugging a barcode scanner rejection
“Our warehouse scanner is rejecting barcodes — I think the check digits are wrong. Can you compute the correct GS1 check digit for the code body '40700719670' so I can compare it against what we printed?”
Bulk product catalog preparation
“I'm onboarding products into our ERP system and have partial GTIN codes without their final digits. Can you compute the GS1 check digit for the body '50123456789'?”
Technical details
Endpoint
GEThttps://trade.chainverdict.xyz/v1/gtin/checkdigitWhen to prefer
Use this endpoint when you have a GS1 code body (GTIN-8/12/13/14, SSCC, etc.) that is missing only its terminal check digit and you need to compute it programmatically. Prefer this over a full GTIN validation endpoint when you don't yet have the check digit and need to generate rather than verify it.
Side effects
- Invalid or non-numeric code body returns an error
- Code body of incorrect length for the GS1 key type may produce unexpected results
- Missing required 'body' query parameter results in a validation error
- Malformed request returns HTTP 400
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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