Endpoint · computeGETdata.greeneris.io /v1/logistics/gtin-check ?gtin=4006381333931
Offline validation of product barcode numbers: EAN-8, UPC-A, EAN-13 and GTIN-14, using the GS1 mod-10 weighted checksum.
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Offline validation of product barcode numbers: EAN-8, UPC-A, EAN-13 and GTIN-14, using the GS1 mod-10 weighted checksum. Catches corrupted GTINs in supplier catalogs before marketplace publication (Amazon/Google reject invalid GTINs). Query: ?gtin=4006381333931. Returns valid flag, detected format, GS1 member-org prefix and the computed check digit. Deterministic, cached 1 year.Overview
Grade?
UNRATED
0 of 30 paid calls toward a letter
Price
$0.001 per call
Paid calls
none yet
delivery unknown until someone pays
More info
Seller?
URL
https://data.greeneris.io/v1/logistics/gtin-check?gtin=4006381333931
MCP server on this host: io.github.contentfactory/eu-verify
Seen
first 35 days ago · last 16 hr ago
64 free handshakes
Payment
Pays through
x402
Offered on?
Base USDC
Listed on?
Base
Score, from free handshakes onlyweights 2026.09.6
UN
RATED
RATED
0.777 liveness verified, no letter
To a letter · 30 paid calls
0 of 30
Held back by sample size, not by the seller · gap to 1.000 is 0.223: 0.126 uncertain ? + 0.097 short ? · 0.023 to B
| Component | Weight | Measured | Lower bound ? | Adds | Short ? | Uncertain ? | |
|---|---|---|---|---|---|---|---|
| latency p95costs the most it answered as fast as its class |
0.20 | 0.51 | 0.203 | 0.041 | −0.097 | −0.062 | |
| liveness it answered at all |
0.60 | 1.00 | 0.894 | 0.536 | 0 | −0.064 | |
| price stability the price stayed where it was listed |
0.20 | 1.00 | 1.000 | 0.200 | 0 | 0 | |
| Composite | 1.00 | 0.777 | gap to 1.000 = 0.223 · 0.097 short · 0.126 uncertain | 0.777 | −0.097 | −0.126 |
Not measured: correctness · nobody paid; honesty · nobody paid; schema conformance · no answer had a published shape to check
The multiplication, written out
0.200 × 0.203 latency p95
+ 0.600 × 0.894 liveness
+ 0.200 × 1.000 price stability
= 0.777 → UNRATED: 58 of 30 paid calls weights 2026.09.6 · 58 samples · seed cap_01M1A59KXPYRV0P741GFAXHYNN|2026-09-02T05:29:18.190Z|2026.09.6
Verify it yourself
npx teppi-check https://data.greeneris.io/v1/logistics/gtin-check?gtin=4006381333931curl -s https://api.teppi.xyz/v1/trust/cap_01M1A59KXPYRV0P741GFAXHYNN