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Assay Systems — The Extract (Solo Endpoint)
x402
Assay Systems — The Extract (Solo Endpoint) is a paid API for AI agents from assay-systems.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-30).
Queries the public government contract register to return buyer-supplier relationship data, lock information, or buyer market shares for a given country or company.
Price / call$0.01
Success—
StatusUnknown
How this service works
The government market in your sector. One document about one company, computed from the public contract register.
Output
Returns a JSON object with a 'data' field containing either: a list of buyer-supplier contract pairs, lock relationship data, or buyer market share breakdowns for the specified country. Without a country parameter, returns a list of available countries with their contract counts.
Example use cases
Supplier government market footprint
“I'm evaluating a vendor called 'Deloitte' — can you pull their buyer-supplier pairs from the public contract register for the UK so I can see which government agencies they work with?”
Buyer procurement dominance analysis
“What share of the government market do the top buyers hold in France? Fetch the buyers' shares data from the public contract register for France.”
Locked contract discovery
“Show me the locked contracts in the German government procurement register — I want to see page 2 of the locks data for Germany.”
Technical details
Endpoint
GEThttps://assay-systems.com/api/v1/solo?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need structured, computed intelligence about public government procurement — specifically buyer-supplier relationships, contract lock patterns, or buyer market share — derived from the public contract register. It is best suited for market research on government sector activity for a specific company or country, particularly when you want pre-computed analytics rather than raw document search.
Side effects
- Missing or invalid country code returns a country list instead of filtered results
- Unrecognized 'kind' enum value may return an error or empty data
- Supplier or buyer name strings with no matches return empty data sets
- Pagination beyond available pages returns empty results
- Payment failure (x402) blocks access to the endpoint
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| kind | string | With country: buyer-supplier pairs, locks or buyers' shares |
| page | integer | With country: page of rows |
| buyer | string | With country: words of the buyer's name |
| country | string | Two-letter country code; without it the answer lists countries and counts |
| supplier | string | With country: words of the supplier's name |
Output
Schema · Response
| Field | Type | Description |
|---|---|---|
| datarequired | object |
Tags
x402
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