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Assay Systems procurement register MCP Server

by assay-systems Your server? Claim it
answering

Assay Systems procurement register is answering right now. Last checked 13 min ago. It exposes 10 tools.

Public procurement register, 75 countries: suppliers, buyers, contracts, single-bid awards

Uptime history 21 days of history
21 days agonow
100.0%
Uptime 24h
91 of 91 checks
10
Tools
read from the server
214 ms
Response time
average over 24h
open, no key
Access
streamable-http

What changed 20

Every tool that appeared, vanished or quietly changed what it asks for. Recorded since 20 October 2026. No other catalogue keeps this.

31 Oct 5 tools changed the parameters they ask for assay_ending, assay_line_contracts, assay_search and 2 more
22 Oct 9 tool descriptions were rewritten assay_contract, assay_countries, assay_ending and 6 more
20 Oct 5 tool descriptions were rewritten assay_contract, assay_countries, assay_line and 2 more
20 Oct a tool disappeared assay_uncontested

Tools have disappeared from this server

A tool that vanishes takes a piece of your agent with it, and the change arrives silently. Watch this server and every such change lands in your inbox.

Three servers free · no card

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 13 min ago.

run in your terminal
claude mcp add register --transport http https://assay-systems.com/mcp
Settings → Connectors → Add custom connector, then paste this address
https://assay-systems.com/mcp
~/.codex/config.toml
[mcp_servers.register]
url = "https://assay-systems.com/mcp"
.cursor/mcp.json
{
  "mcpServers": {
    "register": {
      "url": "https://assay-systems.com/mcp"
    }
  }
}
.vscode/mcp.json
{
  "servers": {
    "register": {
      "type": "http",
      "url": "https://assay-systems.com/mcp"
    }
  }
}

Available tools 10

Read directly from the server with tools/list, grouped by what they act on. If a tool disappears, we record the date.

assay
assay_contract
One contract or award record from the register.
assay_countries
Countries covered by the Assay Systems procurement register, with the number of suppliers indexed in each.
assay_ending
Contracts of one line that are still running, soonest end first: the next tenders to come. Needs an Enterprise Data key: X-API-Key header on the MCP request (https://assay-systems.com/api-key/#data).
assay_line
A line of business (what is bought) in one country: buyers, suppliers and totals.
assay_line_contracts
All contract rows of one line of business with the buying office's contact, end dates and amounts. Needs an Enterprise Data key: X-API-Key header on the MCP request (https://assay-systems.com/api-key/#data).
assay_search
Search the register for a supplier (firm) by name or line of business. Returns names, countries, ids and endpoints.
assay_solo
Buyer × supplier pairs where the supplier won without a rival, locks and buyer shares; without country — the list of countries. Needs an Enterprise Data key: X-API-Key header on the MCP request (https://assay-systems.com/api-key/#data).
assay_status
When each source of the register was last read and built.
assay_supplier
One supplier's record: contracts won, buyers, totals, exclusions and grants, with the source and licence.
assay_supplier_contracts
All contract rows of one supplier with the buying office's contact, end dates and amounts. Needs an Enterprise Data key: X-API-Key header on the MCP request (https://assay-systems.com/api-key/#data).

Tools removed

Tools this server used to expose. Anything built against them stopped working on the day they went.

assay_uncontested
removed 20 Oct 2026

Endpoints

URLTransportStateLatencyChecked
https://assay-systems.com/mcp streamable-http answering 183 ms 13 min ago

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Assay Systems procurement register — questions

Answers built from our own checks of this server.

What can Assay Systems procurement register do?
It exposes 10 tools, read directly from the server on our last check. Among them: assay_contract, assay_countries, assay_ending, assay_line, assay_line_contracts, assay_search and 4 more. The full list with descriptions is on this page — we take it from the server itself via tools/list, not from a README. How MCP servers expose tools in the first place →
Is Assay Systems procurement register working right now?
We send a real MCP handshake every 15 minutes. Over the last 24 hours 91 of 91 checks got a reply (100.0%), average response time 214 ms. The bar chart above shows every period we have measured.
Did Assay Systems procurement register ever remove tools?
Yes. assay_uncontested is no longer exposed — we recorded the date each one disappeared. A tool vanishing usually means a breaking change for anything that depended on it.
How do I connect Assay Systems procurement register?
Copy the ready config from this page. We generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each in the form that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.
Does Assay Systems procurement register need an API key?
No. Assay Systems procurement register completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 10 of them are readable on this page. This is what we observed, not what the docs claim.
How fast is Assay Systems procurement register?
It answers our handshake in 214 ms on average, which is faster than 66% of all working MCP servers we measure. The comparison comes from our own checks across the whole registry, every 15 minutes.