Official MCP RegistryListed
Assay Systems procurement register
Public procurement register, 50+ countries: suppliers, buyers, contracts, single-bid awards
First seen 18 Oct 2026. Evidence as of 21 Oct 2026.
10
Tools
From an anonymous probe
1
Source listings
Each with its own history
9
Recorded changes
Since first seen
Tools
| Tool | Description | Behaviour |
|---|---|---|
| assay_contract | One contract or award record from the register. Needs an Enterprise Data key: X-API-Key header on the MCP request (https://assay-systems.com/api-key/#data). | Read-only |
| assay_countries | Countries covered by the Assay Systems procurement register, with the number of suppliers indexed in each. Needs an Enterprise Data key: X-API-Key header on the MCP request (https://assay-systems.com/api-key/#data). | Read-only |
| assay_ending | Contracts of one line that are still running, soonest end first: the next tenders to come. Paid: USD 0.01 per call in USDC on Base via x402 (or an X-API-Key Commercial key on the MCP request). | Read-only |
| assay_line | A line of business (what is bought) in one country: buyers, suppliers and totals. Needs an Enterprise Data key: X-API-Key header on the MCP request (https://assay-systems.com/api-key/#data). | Read-only |
| assay_line_contracts | All contract rows of one line of business with the buying office's contact, end dates and amounts. Paid: USD 0.01 per call in USDC on Base via x402 (or an X-API-Key Commercial key on the MCP request). | Read-only |
| assay_search | Search the register for a supplier (firm) by name or line of business. Returns names, countries, ids and endpoints. Needs an Enterprise Data key: X-API-Key header on the MCP request (https://assay-systems.com/api-key/#data). | Read-only |
| assay_solo | Buyer × supplier pairs where the supplier won without a rival, locks and buyer shares; without country — the list of countries. Paid: USD 0.01 per call in USDC on Base via x402 (or an X-API-Key Commercial key on the MCP request). | Read-only |
| assay_status | When each source of the register was last read and built. | Read-only |
| assay_supplier | One supplier's record: contracts won, buyers, totals, exclusions and grants, with the source and licence. Needs an Enterprise Data key: X-API-Key header on the MCP request (https://assay-systems.com/api-key/#data). | Read-only |
| assay_supplier_contracts | All contract rows of one supplier with the buying office's contact, end dates and amounts. Paid: USD 0.01 per call in USDC on Base via x402 (or an X-API-Key Commercial key on the MCP request). | Read-only |
Change history
- assay_supplier: description changed (+"Needs an Enterprise Data key: X-API-Key header on the MCP request (https://assay-systems.com/api-key/#data).")
- assay_search: description changed (+"Needs an Enterprise Data key: X-API-Key header on the MCP request (https://assay-systems.com/api-key/#data).")
- assay_line: description changed (+"Needs an Enterprise Data key: X-API-Key header on the MCP request (https://assay-systems.com/api-key/#data).")
- assay_countries: description changed (+"Needs an Enterprise Data key: X-API-Key header on the MCP request (https://assay-systems.com/api-key/#data).")
- assay_contract: description changed (+"Needs an Enterprise Data key: X-API-Key header on the MCP request (https://assay-systems.com/api-key/#data).")
- server instructions changed (+"70" +"Tools need an Enterprise Data key (X-API-Key header on the MCP request, https://assay-systems.com/api-key/#data); assay_status needs none." +"can also be paid per call:")
- assay_uncontested: tool removed
- server instructions changed (+"buyers)." -"buyers, uncontested awards).")
- Listed (registry)
| Source | Listing | First seen | Last seen | Versions |
|---|---|---|---|---|
| Official MCP Registry | com.assay-systems/register | 18 Oct 2026 | 21 Oct 2026 | 1 |