# Catawiki Auction Deal Finder — Bid vs Expert Estimate (`jdepablos/catawiki-deal-finder`) Actor

One call = one hunt across live Catawiki auctions. Current bid vs the site expert estimate: discount %, hours left, reserve status — ranked and structured. Built for AI agents, resellers and collectors.

- **URL**: https://apify.com/jdepablos/catawiki-deal-finder.md
- **Developed by:** [Juan de Pablos](https://apify.com/jdepablos) (community)
- **Categories:** E-commerce, Automation
- **Stats:** 3 total users, 0 monthly users, 100.0% runs succeeded, 0 bookmarks
- **User rating**: No ratings yet

## Pricing

from $40.00 / 1,000 auction scans

This Actor is paid per event and usage. You are charged both the fixed price for specific events and for Apify platform usage.

Learn more: https://docs.apify.com/platform/actors/running/actors-in-store#pay-per-event

## What's an Apify Actor?

Actors are web data automations that power AI and operations. They run on the Apify platform to scrape websites, process data, connect APIs, and automate workflows.
In Batch mode, an Actor accepts a well-defined JSON input, performs an action which can take anything from a few seconds to a few hours,
and optionally produces a well-defined JSON output, datasets with results, or files in key-value store.
In Standby mode, an Actor provides a web server which can be used as a website, API, or an MCP server.
Actors are written with capital "A".

## How to integrate an Actor?

If asked about integration, you help developers integrate Actors into their projects.
You adapt to their stack and deliver integrations that are safe, well-documented, and production-ready.
The best way to integrate Actors is as follows.

- **AI agents and MCP clients** — the [Apify MCP server](https://docs.apify.com/integrations/mcp.md) at `https://mcp.apify.com` (remote, streamable HTTP, OAuth on first use).
- **Agentic workflows and local Actor development** — [Agent Skills](https://apify.com/.well-known/agent-skills/index.json) with the [Apify CLI](https://docs.apify.com/cli/docs.md): `npm install -g apify-cli`, then `apify login`.
- **JavaScript/TypeScript projects** — the official [JS/TS client](https://docs.apify.com/api/client/js/docs.md): `npm install apify-client`.
- **Python projects** — the official [Python client](https://docs.apify.com/api/client/python/docs.md): `pip install apify-client`.
- **Any other language** — the [REST API](https://docs.apify.com/api/v2.md).

For usage examples, see the [API](#api) section below.

For more details, see Apify documentation as [Markdown index](https://docs.apify.com/llms.txt) and [Markdown full-text](https://docs.apify.com/llms-full.txt).

# README

## Catawiki Auction Deal Finder — Bid vs Expert Estimate

**One call = one hunt across live Catawiki auctions.** Catawiki's own experts publish a value estimate for every lot — this actor puts that estimate to work: it scans live auctions for whatever you're hunting, fetches each lot's current bid, and ranks everything by **discount vs the expert's minimum estimate**, with hours-to-close and reserve status attached. Built for AI agents, resellers and collectors.

```json
{
    "query": "game boy",
    "deals": [
        {
            "title": "Nintendo - Gameboy Classic - Tennis - Game Boy (CIB)",
            "condition": "Estado: Buen estado",
            "currentBid": 15,
            "currency": "EUR",
            "estimateMin": 330,
            "estimateMax": 380,
            "discountVsEstimatePct": 95.5,
            "endsAt": "2026-07-08T17:11:30.000Z",
            "hoursLeft": 87.8,
            "reserveMet": false,
            "freeShipping": false,
            "url": "https://www.catawiki.com/es/l/..."
        }
    ],
    "meta": { "lotsFound": 158, "lotsAnalyzed": 12, "lotErrors": 0 }
}
```

### Why the expert estimate matters

Every Catawiki lot is reviewed by one of their in-house experts, who publishes a min–max value estimate based on quality, rarity and provenance. That's a **professional appraisal, per lot, for free** — the missing reference price that raw auction scrapers don't give you. A lot bidding at €55 with a €550 minimum estimate three days before close is a signal worth watching; this actor surfaces exactly that, ranked.

Two honest caveats, structurally exposed in the output:

- `reserveMet: false` means the seller's hidden reserve isn't reached yet — the lot may not sell at the current bid. Filter with `reserveMetOnly: true` if you only want lots that will definitely sell.
- Early-auction bids are naturally far below estimates. Use `endingWithinHours` to hunt lots where the discount is *real* because the clock is almost out.

### Input

| Field | Default | Notes |
|---|---|---|
| `query` | — | What to hunt: `"game boy"`, `"omega seamaster"`, `"lego star wars"` |
| `items` | — | Batch of up to 10 queries, each may override any option |
| `maxLots` | 20 | Lots fetched in detail per query (max 40) |
| `minDiscountPct` | 0 | Keep lots at least this % below the min estimate |
| `endingWithinHours` | — | Only lots closing within N hours |
| `reserveMetOnly` | `false` | Only lots guaranteed to sell |
| `strictClean` | `true` | Drop lots whose title doesn't match your query (search is fuzzy) |

### Use with AI agents (MCP)

```
https://mcp.apify.com?tools=jdepablos/catawiki-deal-finder
```

Your agent gets a live "find undervalued auction lots" tool with structured, self-describing output — deals ranked, no pagination, no HTML. Pair it with a sold-price appraiser (e.g. [eBay Sold Price Appraiser](https://apify.com/jdepablos/ebay-sold-price-appraiser)) and the agent can compare an auction's entry price against real market resale value before recommending a bid.

### Pricing

Pay per event: one **auction-scan** per query analyzed (up to 40 lots fetched, ranked and returned). Scans that analyze no lots are **never charged**.

### FAQ

**Which Catawiki categories does it cover?** All of them — the hunt is a free-text search across live auctions (watches, coins, comics, LEGO, retro games, art, wine…).

**Are these sold prices?** No — these are *live* auctions: current bid vs expert estimate. That's the point: you're early, not late.

**How fresh is the data?** Real-time at fetch. For monitoring, schedule the actor (e.g. every 6h) with `endingWithinHours: 12` and act on what comes back.

**Is this affiliated with Catawiki?** No. Data comes from publicly visible auction pages.

# Actor input Schema

## `query` (type: `string`):

Item to search across live Catawiki auctions, e.g. "game boy", "omega seamaster", "lego star wars". For batches use `items`.

## `items` (type: `array`):

Up to 10 queries per run: `[{"query": "game boy"}, {"query": "rolex", "minDiscountPct": 40}]`. Each item may override any option.

## `maxLots` (type: `integer`):

How many search results to fetch in detail (bid + expert estimate). Each lot is one page fetch.

## `minDiscountPct` (type: `integer`):

Keep only lots whose entry bid is at least this % below the expert's minimum estimate. 0 returns all analyzed lots ranked.

## `endingWithinHours` (type: `integer`):

Optional: keep only lots closing within this many hours (deals get real near the close).

## `reserveMetOnly` (type: `boolean`):

Keep only lots whose reserve price is already met (they WILL sell). Off by default — no-reserve bargains are often the best ones.

## `strictClean` (type: `boolean`):

Filter out lots whose title doesn't match the query tokens (Catawiki search is fuzzy).

## `minTitleMatch` (type: `string`):

Share of query tokens required in the lot title. Decimal as string, e.g. "0.5".

## `proxy` (type: `object`):

Residential proxy recommended (default).

## Actor input object example

```json
{
  "query": "game boy",
  "maxLots": 20,
  "minDiscountPct": 0,
  "reserveMetOnly": false,
  "strictClean": true,
  "minTitleMatch": "0.5",
  "proxy": {
    "useApifyProxy": true,
    "apifyProxyGroups": [
      "RESIDENTIAL"
    ]
  }
}
```

# API

You can run this Actor programmatically using our API. Below are code examples in JavaScript, Python, and CLI, as well as the OpenAPI specification and MCP server setup.

## JavaScript example

```javascript
import { ApifyClient } from 'apify-client';

// Initialize the ApifyClient with your Apify API token
// Replace the '<YOUR_API_TOKEN>' with your token
const client = new ApifyClient({
    token: '<YOUR_API_TOKEN>',
});

// Prepare Actor input
const input = {
    "query": "game boy",
    "proxy": {
        "useApifyProxy": true,
        "apifyProxyGroups": [
            "RESIDENTIAL"
        ]
    }
};

// Run the Actor and wait for it to finish
const run = await client.actor("jdepablos/catawiki-deal-finder").call(input);

// Fetch and print Actor results from the run's dataset (if any)
console.log('Results from dataset');
console.log(`💾 Check your data here: https://console.apify.com/storage/datasets/${run.defaultDatasetId}`);
const { items } = await client.dataset(run.defaultDatasetId).listItems();
items.forEach((item) => {
    console.dir(item);
});

// 📚 Want to learn more 📖? Go to → https://docs.apify.com/api/client/js/docs

```

## Python example

```python
from apify_client import ApifyClient

# Initialize the ApifyClient with your Apify API token
# Replace '<YOUR_API_TOKEN>' with your token.
client = ApifyClient("<YOUR_API_TOKEN>")

# Prepare the Actor input
run_input = {
    "query": "game boy",
    "proxy": {
        "useApifyProxy": True,
        "apifyProxyGroups": ["RESIDENTIAL"],
    },
}

# Run the Actor and wait for it to finish
run = client.actor("jdepablos/catawiki-deal-finder").call(run_input=run_input)

# Fetch and print Actor results from the run's dataset (if there are any)
print("💾 Check your data here: https://console.apify.com/storage/datasets/" + run["defaultDatasetId"])
for item in client.dataset(run["defaultDatasetId"]).iterate_items():
    print(item)

# 📚 Want to learn more 📖? Go to → https://docs.apify.com/api/client/python/docs/quick-start

```

## CLI example

```bash
echo '{
  "query": "game boy",
  "proxy": {
    "useApifyProxy": true,
    "apifyProxyGroups": [
      "RESIDENTIAL"
    ]
  }
}' |
apify call jdepablos/catawiki-deal-finder --silent --output-dataset

```

## MCP server setup

```json
{
    "mcpServers": {
        "apify": {
            "command": "npx",
            "args": [
                "mcp-remote",
                "https://mcp.apify.com/?tools=jdepablos/catawiki-deal-finder",
                "--header",
                "Authorization: Bearer <YOUR_API_TOKEN>"
            ]
        }
    }
}

```

## OpenAPI specification

Download the OpenAPI definition: https://api.apify.com/v2/actors/83PmAI7mBodDQnDgL/builds/PtmcEr4N660v8QBJh/openapi.json