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EAN-13 Barcode Checksum Validator
x402
EAN-13 Barcode Checksum Validator is a paid API for AI agents from hcrb.in, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-12).
Validates an EAN-13 barcode number using offline deterministic checksum verification, returning validity, reason, and normalized form.
Price / call$0.005
Success—
StatusUnknown
How this service works
Offline deterministic checks (no ML, no scraping) for business identifiers and rental due-diligence, paid per call via x402 (gasless EIP-3009 USDC on Base). Checksum-verifiable (IBAN, LEI, VAT, ABA, ISBN, SEDOL…) vs format-only (EIN, IFSC, SWIFT/BIC…) — every response returns a scope field. Non-custodial, signed receipts. First 3 calls/day free.
Output
Returns a JSON object with: a 'valid' boolean indicating whether the EAN-13 checksum passes, a 'reason' string explaining the result (e.g. 'checksum valid' or specific failure reason), a 'normalized' form of the barcode, a 'country' string if detectable, a 'scope' field indicating whether this is a checksum-verifiable or format-only check, and a 'tool' identifier string.
Example use cases
Retail product catalog data cleanup
“I have a list of EAN-13 barcodes from our product catalog and I need to check if 4006381333931 is a legitimate valid barcode before I import it into our system.”
E-commerce listing barcode check
“Before I publish this product listing, can you verify that the barcode 0012345678905 is a properly formed EAN-13 with a valid check digit?”
Inventory scan error detection
“Our scanner picked up 9780306406157 — can you confirm whether that's a valid EAN-13 barcode and what country it's associated with?”
Technical details
Endpoint
POSThttps://hcrb.in/v1/tools/ean13-check/call?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a fast, offline, deterministic checksum validation of EAN-13 barcodes without any external database lookups or ML inference. It is ideal for bulk data hygiene, pre-import validation, or any scenario where you need a reliable structural check of a barcode at minimal cost ($0.005/call) with no privacy concerns since no data leaves to third-party enrichment services. Prefer it over scraping-based or registry-lookup validators when deterministic correctness and low latency matter most.
Side effects
- Invalid or non-EAN-13 input returns valid=false with a descriptive reason
- Non-numeric or wrong-length input rejected with reason explaining format issue
- Network or payment failure if x402 micropayment is not properly handled
- After 3 free daily calls, subsequent calls require USDC payment via x402 protocol
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| input | object |
Output
Schema · Response
{
"type": "json",
"schema": {
"type": "object",
"required": [
"valid",
"reason"
],
"properties": {
"tool": {
"type": "string"
},
"scope": {
"type": "string"
},
"valid": {
"type": "boolean"
},
"reason": {
"type": "string"
},
"country": {
"type": "string"
},
"normalized": {
"type": "string"
}
}
},
"example": {
"valid": true,
"reason": "checksum valid"
}
}Tags
x402
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