# GS1 GTIN/EAN Prefix to Member Organisation Resolver

> GS1 GTIN/EAN Prefix to Member Organisation Resolver is a paid API for AI agents from trade.chainverdict.xyz, paid per call via x402, $0.004/call, status unknown (last checked 2026-09-15).

Resolves a GTIN or EAN prefix code to its corresponding GS1 Member Organisation (the national/regional GS1 body that issued the prefix).

## Facts

- Endpoint: GET https://trade.chainverdict.xyz/v1/gtin/prefix
- Price: $0.004/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/gs1-gtin-ean-prefix-to-member-organisation-resolver-43642d48
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_IzlweB9RBccZpt2SX2PdM

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 gs1-gtin-ean-prefix-to-member-organisation-resolver-43642d48
```

Example prompt: Which GS1 Member Organisation issued the prefix for GTIN 5901234123457 — can you look that up for me?

## When to prefer this

Use this endpoint when you need to identify the GS1 Member Organisation (the national/regional GS1 body) that issued a given GTIN or EAN prefix — particularly useful for supply chain auditing, product data enrichment, and marketplace compliance checks. Note this resolves the issuing GS1 body, not the country of manufacture. Prefer this over a full GTIN validation endpoint when membership/prefix attribution is the specific question.

## Known failure modes

- Invalid or unrecognised GTIN/prefix returns an error or empty result
- Prefix not yet assigned to any GS1 member organisation
- Malformed code (wrong length, non-numeric characters) causes validation failure
- Network or payment authorisation failure returns HTTP 402 or 5xx

## How this service works

Resolve a GTIN/EAN prefix to its GS1 Member Organisation (not country of origin).

## Output

Returns the GS1 Member Organisation (national or regional GS1 body) associated with the given GTIN or EAN prefix, identifying which official GS1 entity issued the barcode prefix — not the country of origin of the product.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "code"
 ],
 "properties": {
  "code": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "valid": {
   "type": "boolean"
  },
  "_attestation": {
   "type": "object"
  }
 },
 "additionalProperties": true
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/gs1-gtin-ean-prefix-to-member-organisation-resolver-43642d48/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from trade.chainverdict.xyz](https://www.zero.xyz/host/trade.chainverdict.xyz/llms.txt)