valid-gtin
Installation
SKILL.md
GTIN / UPC / EAN validation
valid.gtin on https://fittings.sh. One endpoint, deterministic compute.
Validate a GTIN-8/12/13/14 barcode number by GS1 mod-10 check digit and report its format.
The call
GET https://fittings.sh/v1/valid/gtin
| Field | Type | Required | Notes |
|---|---|---|---|
gtin |
string | yes |
Example input: