GovAuctions Data API
Real sold-price comps, resale scores, and live listings - government-surplus data built for code and AI agents
Sold-price comps and Flip Scores computed across four government-surplus markets - US, UK, Canada and Australia - plus live GSA federal-surplus listings. Query it over REST, or add the hosted MCP server to Claude Code in one line. One key, the same valuation engine behind GovAuctions Pro.
Live listings
- •Active federal-surplus lots from GSA Auctions, in one clean schema
- •Filter by state, category, price, and keyword
- •Clean JSON, facts only - pull images from each source URL
Sold-price comps
- •What comparable items actually sold for: p25 / median / p75
- •Four markets - US, UK, Canada and Australia - matched by item
- •Answer “is this a fair price?” in a single call
Flip Score
- •Our proprietary resale signal for a GSA listing
- •Valued against the full market: estimated value, effective bid, discount gap
- •The Pro deal-finder, exposed straight to your code
Pricing
Every plan includes the full feature set - comps and Flip Score too. Plans carry two budgets: total calls, and a smaller allowance for the valuation endpoints (comps and Flip Score), which is the data we compute rather than collect. Listing calls keep working if you exhaust the valuation allowance.
Free
Free
1,000 calls/mo
- ✓ 100 valuation calls (comps + Flip Score)
- ✓ 10 req/sec burst
- ✓ Comps in US, UK, CA, AU
- ✗ CSV export
Starter
$19/mo
10,000 calls/mo
- ✓ 1,000 valuation calls (comps + Flip Score)
- ✓ 20 req/sec burst
- ✓ Comps in US, UK, CA, AU
- ✓ CSV export up to 5,000 rows
Hobby
$49/mo
50,000 calls/mo
- ✓ 10,000 valuation calls (comps + Flip Score)
- ✓ 30 req/sec burst
- ✓ Comps in US, UK, CA, AU
- ✓ CSV export up to 25,000 rows
Enterprise
Let's talk
Custom volume & terms
Bulk historical archives, high call volumes, custom feeds, a data license, or an SLA. Tell us what you're building and we'll shape a plan around it.
Already a GovAuctions Pro subscriber? Your account gets the free API tier with 250 valuation calls a month instead of 100, at no extra cost. Mint a key in the dashboard.
Need bulk or licensed data?
Not building against the API? If you want a bulk historical archive, a custom feed, or a commercial data license - for sourcing, valuation, asset recovery, or research - tell us your use case and we'll scope coverage, a sample export, and pricing around it.
Quickstart
curl https://govauctions.app/api/v1/listings?country=US&category=vehicles&limit=5 \ -H "Authorization: Bearer YOUR_API_KEY"
Using AI tools? Point ChatGPT Actions or a codegen client at the OpenAPI spec, or add our hosted MCP server below.
MCP server
We run a hosted MCP server over streamable HTTP, so there is nothing to download or keep running. Works with Claude Code, Claude Desktop, and any client that accepts a remote MCP URL. One line:
claude mcp add --transport http govauctions https://govauctions.app/api/mcp \ --header "Authorization: Bearer gak_YOUR_KEY"
Or point any other client at https://govauctions.app/api/mcp and send your key as an Authorization: Bearer header.
Tools
search_listings- live GSA federal-surplus lots by state, category, keyword, priceget_listing- one lot by idget_sold_comps- sold-price percentiles for an item, in any of the four marketsget_flip_score- resale signal for a live lot
Try it without a key
You can add the server and list its tools with no key at all, and get_sold_comps will answer keyless with how many comparable sales we hold, the confidence, and a coarse price band.
The actual p25 / median / p75 numbers need a key. Free keys include 100 valuation calls a month, so that is a signup, not a paywall.
Data is provided for your own application use. Redistribution or rebuilding a competing dataset is not permitted. Flip Score and Flip Margin are rough indicators, not investment advice - always inspect, factor transport, and review the listing carefully before bidding.