# Yahoo! Flea Market Japan

> Search public Japanese flea-market listings. Native 100-item pages; limit truncates each page, not an exhaustive export.
> ReefAPI engine `paypay-flea-market` · 2 endpoints · clean JSON, no scraping or browsers to manage.

## How to call
- **Endpoint:** `POST https://api.reefapi.com/paypay-flea-market/v1/<action>` with a JSON body.
- **Auth:** header `x-api-key: <YOUR_REEFAPI_KEY>` — create one free (1,000 credits, no card): https://reefapi.com/signup
- **Response (every call):** `{ ok: boolean, data: ..., meta: { record_count, credits, ... }, error: { code, message } }` — branch on `ok`. Failed calls are free except verified SHEIN NOT_FOUND on product/detail and price (4 credits).
- **One key + one shared credit pool** across every ReefAPI API. Per-call credits are listed on each endpoint below.
- **Use it from an AI agent (MCP):** connect `https://api.reefapi.com/mcp` (remote streamable-http). Send the key as `Authorization: Bearer <key>`, or put it in the URL (`?key=<key>`) when the client has no header field, as ChatGPT does.

## Endpoints

### POST https://api.reefapi.com/paypay-flea-market/v1/search — 3 credits
Search public Japanese flea-market listings. Native 100-item pages; limit truncates each page, not an exhaustive export.

**Parameters:**
- `query` (string, required) — Japanese or other keyword, at most 120 characters.
- `page` (integer, optional, default 1) — Native source page; only pages one and two are qualified.
- `limit` (integer, optional, default 3) — Maximum rows returned from this native 100-item page. Truncated rows are skipped when advancing page.

**Returns:** results with listing id, title, JPY price, source status and seller reputation; source totals and semantic fallback label.

**Example request body:**
```json
{
  "query": "iphone",
  "page": 1,
  "limit": 3
}
```

### POST https://api.reefapi.com/paypay-flea-market/v1/product/detail — 3 credits
Read a public listing using its live search id.

**Parameters:**
- `item_id` (string, required) — Copy results[].id from search; not a Yahoo Auctions id.

**Returns:** One listing with description, images, source categories, specifications, shipping and public seller facts.

**Example request body:**
```json
{
  "item_id": "z696924036"
}
```

## At scale
- **Volume:** 5M+ requests a day, measured at 60 requests a second across the fleet with no
  central bottleneck. Per-key limits are raised for high-volume accounts; volume pricing on request.
- **Missing a source:** tell us a site we do not cover and it becomes an engine. A customer asked
  for bestprice.gr on 21 Sep 2026 and it was in the catalog on 22 Sep.
- **Support:** 2 minute median time from a question in the live chat to the first answer. Setup
  help included, no support tier to buy.
- **One key, one credit pool** across every API. No per-site plans, no separate subscriptions.

## More
- Try it live, no code: https://reefapi.com/playground?engine=paypay-flea-market
- Human docs page: https://reefapi.com/docs/paypay-flea-market
- Overview page: https://reefapi.com/paypay-flea-market-api
- Every ReefAPI API in one file (for your AI): https://reefapi.com/llms-full.txt