# Ricardo — 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 and browse marketplace listings across Ricardo.ch, Switzerland's largest online marketplace, with powerful filtering by category and sorting options including price, relevance, recency, and auction activity. Quickly discover products tailored to your interests and find the best deals based on your preferred search criteria.

**Category:** Marketplaces | **Website:** [www.ricardo.ch/](https://www.ricardo.ch/) | **Docs:** [parse.bot/marketplace/3498ba78-0749-4273-8ef1-07f611da1bde/ricardo-ch-api](https://parse.bot/marketplace/3498ba78-0749-4273-8ef1-07f611da1bde/ricardo-ch-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/ricardo/`
**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

### Search listings

Search marketplace listings by keyword, optionally filtered by category and sorted by price or other criteria. Returns paginated results with 60 listings per page. The response includes category facets with slugs that can be used for subsequent filtered searches. Each listing includes pricing (auction bid price and/or buy-now price), condition, brand, seller, and shipping information.

**Estimated cost:** Metered

| Field | Type | Required | Description |
|-------|------|----------|-------------|
| `category_slug` | string | No | Category slug to filter results, in the format '{name}-{id}' (e.g. 'notebooks-39272', 'sports-41875'). Available slugs are returned in the 'categories' array of the response. |
| `page` | integer | No | Page number for pagination (1-indexed). Each page returns up to 60 results. |
| `query` | string | Yes | Search keyword(s) to find listings. |
| `sort` | string | No | Sort order for results. |

```bash
curl -X POST https://api.paywithlocus.com/api/wrapped/credits/ricardo/search-listings \
  -H "Authorization: Bearer $LOCUS_CREDITS_SECRET_KEY" \
  -H "Idempotency-Key: $(uuidgen)" \
  -H "Content-Type: application/json" \
  -d '{"category_slug":"<string>","page":"<integer>","query":"<string>","sort":"<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.