## Can FastAF guarantee sold transaction data?

No. The API accepts resource=search and an eBay search URL, but its documented output is listing data, not a verified transaction ledger. Sold/completed filters in a URL need validation on real results before relying on them.

## What should you validate?

Check returned fields before using them in an agent decision. Missing fields are not evidence of zero values; preserve provenance and use bounded retries.

## How do you make a real request?

This example calls [eBay API](/apis/ebay-api/) using its documented input. Save the API key from the signup email, confirm your email and set FASTAF\_API\_KEY in your server environment.

```
curl --fail-with-body -H "Authorization: Bearer $FASTAF_API_KEY" 'https://api.fastaf.co/v1/ebay?resource=search&url=https%3A%2F%2Fwww.ebay.com%2Fsch%2Fi.html%3F_nkw%3Dmechanical%2Bkeyboard'
```

```
# pip install fastaf-sdk
import os
from fastaf import FastAF

with FastAF(os.environ["FASTAF_API_KEY"]) as client:
    data = client.request("ebay", {"resource":"search","url":"https://www.ebay.com/sch/i.html?_nkw=mechanical+keyboard"})
    print(data)
```

eBay search JSON. search\_results contains listing title, itemId, condition, price, extracted\_price, shipping and link when available. Item lookups return product\_results instead.

The example costs 5 credits after the trial. Alternatively, this endpoint costs $0.005 per successful x402 call at the default configuration; FastAF x402 calls start at $0.003. These are separate billing modes.

For x402, request the same parameters under `/x402/v1/ebay` without an API key, validate the live PAYMENT-REQUIRED challenge, then sign and retry with a payment-aware client. A bare curl request returns HTTP 402 and does not pay; unsupported higher-cost options require API-key billing.

## Frequently asked questions

### Is a listing price a confirmed sale price?

No. Displayed listing prices do not prove the final amount paid, including accepted offers, shipping or taxes.

### What does the endpoint return?

Search returns listing titles, prices, conditions and links when available, without a guaranteed sold-status field.

### How much does the example cost?

The API-key example uses 5 credits per successful call after the trial. This endpoint has a default x402 price of $0.005 per successful call in USDC on Base; the live payment challenge is authoritative.

### Does the SDK automatically pay an HTTP 402?

No. The API-key SDK does not sign wallet payments; x402 requires an explicitly configured payment-aware client and a funded wallet.

## Try it on your own request

500 free credits every month after email verification, no card.

[Start free](/signup/)

## Related

*   [eBay API](/apis/ebay-api/)
*   [Amazon Price Monitoring API for AI Agents](/use-cases/scrape-amazon-prices-ai-agent/)
*   [Job Listings Aggregation API](/use-cases/google-jobs-api-for-agents/)