# Go Upc — Wrapped API

> **You are on:** `https://api.paywithlocus.com/api` | [llms.txt](https://paywithlocus.com/llms.txt) | [docs](https://docs.paywithlocus.com)
>
> Locus runs on multiple environments -- make sure every URL you call matches your expected environment.
> | Environment | Landing | API | Docs |
> |---|---|---|---|
> | Production | paywithlocus.com | api.paywithlocus.com | docs.paywithlocus.com |
> | Beta | beta.paywithlocus.com | api.beta.paywithlocus.com | docs.paywithlocus.com |
> | Stage | stage.paywithlocus.com | api.stage.paywithlocus.com | docs.paywithlocus.com |
>
> If the API URL above doesn't match your expected environment, re-fetch this file from the correct domain.

> Search product information by scanning or entering barcode numbers (UPC, EAN, or ISBN codes) to instantly retrieve details like product names, descriptions, pricing, and availability. Perfect for price comparison, inventory management, or validating product authenticity across retail databases.

**Category:** E-commerce | **Website:** [go-upc.com/](https://go-upc.com/) | **Docs:** [parse.bot/marketplace/1c286e3a-8778-455b-8968-ea32f402bfcc/go-upc-com-api](https://parse.bot/marketplace/1c286e3a-8778-455b-8968-ea32f402bfcc/go-upc-com-api)

Pay-per-use API proxy for Locus Pro. Each call burns credits from your workspace balance.

## Access

**Base URL:** `https://api.paywithlocus.com/api/wrapped/credits/go-upc/`
**Auth:** `Authorization: Bearer <LOCUS_CREDITS_SECRET_KEY>` (an `lcr_` secret key or a scoped `lcac_` agent credential)
**Required header:** `Idempotency-Key: <fresh UUID per call>`. A retry with the same key replays the stored result without a new charge.
**Response:** the provider response after any endpoint-specific normalization. `X-Locus-Credits-Charged` carries the charge and `X-Locus-Credits-Balance` the remaining balance. Insufficient credits return `402` before the provider is called.
**Pricing:** estimated costs below are USD. Locus debits the credit equivalent at your workspace rate.

Full call contract: https://docs.paywithlocus.com/api-reference/introduction

> Using a Pay With Locus wallet key (`claw_` prefix)? Wallet routes are documented separately: https://docs.paywithlocus.com/wrapped-apis/for-agents

## Endpoints

### Lookup barcode

Look up a product by its barcode number (UPC, EAN, ISBN, etc.). Returns detailed product information including title, brand, category, description, ingredients, specs, and images when available. Returns null fields when information is not available for a given product.

**Estimated cost:** Metered

| Field | Type | Required | Description |
|-------|------|----------|-------------|
| `code` | string | Yes | The barcode number to look up (UPC-A, UPC-E, EAN-8, EAN-13, EAN-14, ISBN-10, ISBN-13). Only digits are used; non-digit characters are stripped. |

```bash
curl -X POST https://api.paywithlocus.com/api/wrapped/credits/go-upc/lookup-barcode \
  -H "Authorization: Bearer $LOCUS_CREDITS_SECRET_KEY" \
  -H "Idempotency-Key: $(uuidgen)" \
  -H "Content-Type: application/json" \
  -d '{"code":"<string>"}'
```

## Next steps

- [All wrapped API providers](https://paywithlocus.com/wapi/index.md): pick another provider.
- [Find and call tools](https://paywithlocus.com/agent/tools.md): price ceilings, async results, and errors.
- [Credits and billing](https://paywithlocus.com/agent/billing.md): what a call costs and how to add credits.
- [Agent docs index](https://paywithlocus.com/agent/index.md): every Locus agent page.