Google Merchant Center `gtin`, `mpn`, `brand`, and `identifier_exists` feed attr...
https://x402-niche-briefs.fly.dev/v1/google-merchant-gtin-checkOverview
Google Merchant Center `gtin`, `mpn`, `brand`, and `identifier_exists` feed attribute matrix. Pass ?condition=new|refurbished|custom_handmade (default new) & ?has_gtin=true|false (default true). Returns exact feed attribute values to submit, GS1 company-prefix cross-check rules, and fixes for 'Invalid value [gtin]' or 'Incorrect identifier_exists'.
Protocol
x402
Price
$0.01
Payment Asset
USD Coin
Payment Network
Base
Category
uncategorized
Provider
x402-niche-briefs
Source
bazaar
Indexed
2026-10-26 07:22:43
Health
Status
healthy
Latency (p50)
292ms
Uptime (30d)
100.0%
Reliability Score
90/100
Last Checked
2026-10-27 20:15:02
Last Healthy
2026-10-27 20:15:02
Consecutive Failures
0
x402 Payment Validation
Payment Requirements
Valid
Asset Verified
Known USDC
Facilitator
—
Input Schema
{
"method": "GET",
"queryParams": {
"condition": "new",
"has_gtin": "true"
},
"type": "http"
}
Output Schema
{
"example": {
"as_of": "2026-10-25",
"critical_disapproval_rules": [
"Never buy cheap non-GS1 resold UPCs or generate random 12-digit numbers: Google cross-checks the GS1 company prefix against the submitted `brand` attribute a...",
"Never set `identifier_exists` to `no` on a mass-produced branded item just because you don't know its UPC — GMC flags that as 'Incorrect identifier_exists'."
],
"disclaimer": "Educational reference and automated checklist only; not legal advice.",
"inputs": {
"condition": "new",
"has_gtin": true
},
"recommended_feed_attributes": {
"brand": "Required manufacturer brand name",
"condition": "new",
"gtin": "Required valid GS1 UPC-A (12 digits), EAN-13 (13 digits), ISBN-13, or GTIN-14 with valid Modulo-10 check digit",
"identifier_exists": "yes",
"mpn": "Recommended alongside GTIN"
}
},
"type": "json"
}
Recent Health Checks
| Time | Status | HTTP | Latency | Error |
|---|---|---|---|---|
| 2026-10-27 20:15:02 | healthy | 402 | 275ms | |
| 2026-10-27 19:11:07 | healthy | 402 | 292ms |