---
title: "Looks up to 20 product identifiers in one call: barcodes (EAN/UPC/GTIN), Amazon ASINs, WEM IDs, catalogue slugs or wem3"
method: POST
path: "/api/agent/products/lookup_products"
---

# Looks up to 20 product identifiers in one call: barcodes (EAN/UPC/GTIN), Amazon ASINs, WEM IDs, catalogue slugs or wem3

`POST /api/agent/products/lookup_products`

## Request

- Base URL: `https://wem3.ai`
- URL: `https://wem3.ai/api/agent/products/lookup_products`
- Auth: none declared

Look up to 20 barcodes, ASINs, WEM IDs, slugs or wem3.ai/pl URLs at once. Each row: found (offer count, lowest price, WEM page link), not_found (not held yet, not nonexistent), unrecognised, or not_checked (not a miss).

## Request body

- object
  - `identifiers` string[], required: 1-20 barcodes (EAN-13, UPC-A, EAN-8, GTIN-14), Amazon ASINs, WEM IDs, catalogue slugs or wem3.ai/pl URLs. Mixed kinds are fine; a comma-separated string is also accepted. Duplicates are looked up once. Each entry must be the identifier alone: not a product name, and not a name with a barcode in it.
  - `currency` string: ISO 4217 code for the shopper's market. Default GBP. Lowest prices are quoted in this currency only, never converted; a product WEM holds only in another currency comes back found with lowPrice null and heldInCurrencies set.

## Response `200`

Tool result. `success: false` means the tool ran and reported a problem.

- object
  - `success` boolean, required
  - `data` object: Shape depends on the tool. Search-style results carry `products`, an optional `catalogMatch` of identity-resolved offers, and `filtered`, a count by reason of the weak matches withheld — report that count rather than implying the search was exhaustive.
  - `error` string

## Other responses

- `400`: Unknown tool or a malformed body.
- `429`: Burst or daily quota exhausted. Respect `retry-after` — retrying sooner cannot succeed.
- `500`: Unexpected server error.

---

[API](https://skmtc.dev/wem3/apis/wem-price-compare-api.md) · [All operations](https://skmtc.dev/wem3/apis/wem-price-compare-api/llms.txt) · [OpenAPI document](https://skmtc.dev/wem3/apis/wem-price-compare-api/revisions/52e5c33c3f39?raw)