Alt sold listings API

Endpoint facts

Method

GET

API path

/alt/sold-listings

Auth

apiKey

Credits

2 credits/request

Platform

Alt

Response schema

#/definitions/alt.soldListingsResponseDoc

Overview

Searches Alt's global archive of completed card sales, aggregated across every source auction house its search carries -- the "market data" side of Alt's card-investment-marketplace positioning. This is a separate index from alt-search/alt-auctions, scoped to a rolling recent time window, not a filtered view of live listings. Pass auction_house=Alt to see only Alt's own completed auctions. Credential-free public data from Alt's own search backend. See alt-categories for the accepted category/auction_house/grading_company values. Developers commonly use this endpoint for data enrichment, monitoring, research dashboards, internal automation, and agent-native workflows that need repeatable structured public web data. Authentication uses the documented Crawlora headers, and usage is metered with the credit cost shown on this page.

Authentication

Send your scraping API key in the x-api-key header. Use the console API Keys page to rotate or select the active key.

Billing

Endpoint usage is metered in credits. The plan prices, included credits, limits, and overage rates below match the active backend billing configuration.

Credit cost

2 credits/request

Charged response

Successful 2xx responses

Infrastructure behavior

This endpoint is executed through Crawlora's managed scraping infrastructure.

• Proxy strategy: managed automatically where needed
• Browser rendering: enabled for supported targets that require rendered HTML or JavaScript execution
• Browser cluster: supported dynamic workloads can be routed through distributed browser instances
• Retry behavior: automatic retry/fallback may be used depending on endpoint type
• Challenge handling: challenged pages or unusable upstream HTML are detected and surfaced clearly when they cannot be used
• Billing: credits are charged only for successful 2xx responses
• Observability: responses include request context where available

Response behavior

- There is no `sort` param — only Alt's own default relevance/recency ordering has been verified against this index. - `url` is the click-through link back to the original sold listing on its source site (e.g. an eBay item URL) when the source auction house provides one. - `auction_type` is a source-specific sub-classification (e.g. eBay's `BEST_OFFER`/`BUY_IT_NOW`/`AUCTION`), informational only — it is not a validated filter enum. Example response: ```json { "code": 200, "msg": "OK", "data": { "query": "michael jordan", "page": 1, "per_page": 24, "total": 101163, "results": [ { "id": "ced1abdd-989f-4cc8-b27d-2838b397d968", "asset_id": "c373aa9a-e7eb-11ea-af75-02d4568f26ba", "name": "1998 SP Top Prospects Phi Beta Jordan Phi Beta Jordan Michael Jordan #J22", "subject": "Michael Jordan", "year": 1998, "brand": "SP Top Prospects Phi Beta Jordan", "card_number": "J22", "category": "BASKETBALL_CARDS", "auction_house": "eBay", "auction_type": "BEST_OFFER", "grading_company": "PSA", "grade": "8", "pop": 16, "price": 36, "sold_date": "2026-09-15", "url": "https://www.ebay.com/itm/366655056141", "images": [ {"position": "FRONT", "url": "https://alt-images.b-cdn.net/external/ebay/sports/366655056141.jpg"} ] } ] } } ```

Error behavior

Crawlora does not silently return bad data when the upstream page cannot be used.

When possible, Crawlora returns structured error context so your integration can retry, back off, or inspect the request.

Related