# PAL GTIN Check

> PAL GTIN Check is a paid API for AI agents from pal-nano-catalog-audit.onrender.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-11-02).

Validates up to 100 GTIN-8, UPC/GTIN-12, GTIN-13, or GTIN-14 product identifiers including check digit verification

## Facts

- Endpoint: POST https://pal-nano-catalog-audit.onrender.com/v1/usdc/gtin-check?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-11-02
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/pal-gtin-check-c6dbaea7
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_6u2FOm87hbWVFG8Sj_1NJ

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability pal-gtin-check-c6dbaea7 -d '<json body>'
```

Example prompt: Can you validate these GTINs for me before I push them to my product feed: 00012345678905, 0614141000418, 9780201379624, 12345670?

## When to prefer this

Choose this endpoint when you need to batch-validate product GTINs (GTIN-8, UPC/GTIN-12, EAN/GTIN-13, or GTIN-14) including check digit verification, especially as part of a catalog upload pipeline, feed audit workflow, or supplier data QA process. It supports up to 100 GTINs per call and is purpose-built for e-commerce and retail catalog use cases alongside sibling endpoints for feed diffing and full catalog audits.

## Known failure modes

- Empty or missing gtins array returns a 400 error
- Array exceeding 100 items is rejected due to maxItems constraint
- Non-numeric string values that cannot be parsed as GTINs may return validation errors per item
- Malformed request body returns a 400 bad request
- Payment failure or insufficient USDC balance returns a 402 Payment Required

## How this service works

Validate up to 100 GTIN-8, UPC/GTIN-12, GTIN-13, or GTIN-14 identifiers including check digits.

## Output

Returns a validation result for each submitted GTIN indicating whether it is structurally valid (correct length and format for GTIN-8/12/13/14) and whether the check digit is correct, along with any error details for invalid identifiers.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "gtins": {
   "type": "array",
   "items": {
    "anyOf": [
     {
      "type": "string"
     },
     {
      "type": "number"
     }
    ]
   },
   "maxItems": 100,
   "minItems": 1
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/pal-gtin-check-c6dbaea7/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from pal-nano-catalog-audit.onrender.com](https://www.zero.xyz/host/pal-nano-catalog-audit.onrender.com/llms.txt)