Open Index MCP Server

by co-openindex Your server? Claim it

answering

Open Index is answering right now. Last checked 5 min ago. It exposes 7 tools.

UK public data by area: house prices, crime, deprivation, schools and more, each figure cited.

Uptime history 12 days of history

12 days agonow

100.0%

Uptime 24h

92 of 92 checks

Tools

read from the server

249 ms

Response time

average over 24h

open, no key

Access

streamable-http

What changed 3

Every tool that appeared, vanished or quietly changed what it asks for. Recorded since 21 October 2026. No other catalogue keeps this.

23 Oct a tool changed version2 times that day

21 Oct a tool changed version

and 1 more, back to 21 October 2026

Nothing serious here today

Today is the operative word: we check Open Index every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 5 min ago.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add open-index --transport http https://openindex.co.uk/mcp

Settings → Connectors → Add custom connector, then paste this address

https://openindex.co.uk/mcp

~/.codex/config.toml

[mcp_servers.open-index]
url = "https://openindex.co.uk/mcp"

.cursor/mcp.json

{
  "mcpServers": {
    "open-index": {
      "url": "https://openindex.co.uk/mcp"
    }
  }
}

.vscode/mcp.json

{
  "servers": {
    "open-index": {
      "type": "http",
      "url": "https://openindex.co.uk/mcp"
    }
  }
}

Available tools 7

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

compare

compare_places

Two UK areas of the same level side by side on the same published figures, each with its own period and source. Key figures by default.

fetch

fetch

Read one UK area's overview figures by its canonical page path. Includes periods, sources, licences, gaps and citation links at the published level of detail.

lookup

lookup_postcode

The areas a Great Britain postcode sits in (council, constituency, ward, neighbourhood and more) with their codes and pages. A district (E8) or sector (E8 1) gives its councils. Northern Ireland postcodes are not available.

place

get_place

Published figures for one UK area: key figures by default, or every figure in one topic. Each figure has its period, publication date, rank, comparisons, source and a link to the figure on its page.

places

search_places

Find UK places (nations, regions, councils, constituencies, towns, wards, neighbourhoods) and postcodes by name, with each one's official code, level and page URL. Also lists matching data layers.

ranking

get_ranking

Councils ranked on one measure across the UK, a nation or an English region, for the latest period. Measures each nation makes its own way (such as deprivation) are ranked within one nation only.

search

Find UK area overview documents by place name for research, with canonical page paths, titles and citation URLs. Great Britain postcodes identify their published area. No Northern Ireland postcodes.

Endpoints

URL	Transport	State	Latency	Checked
https://openindex.co.uk/mcp	streamable-http	answering	302 ms	5 min ago

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Open Index — questions

Answers built from our own checks of this server.

What can Open Index do?

It exposes 7 tools, read directly from the server on our last check. Among them: compare_places, fetch, get_place, get_ranking, lookup_postcode, search and 1 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 Open Index working right now?

We send a real MCP handshake every 15 minutes. Over the last 24 hours 92 of 92 checks got a reply (100.0%), average response time 249 ms. The bar chart above shows every period we have measured.

How do I connect Open Index?

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 Open Index need an API key?

No. Open Index completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 7 of them are readable on this page. This is what we observed, not what the docs claim.

How fast is Open Index?

It answers our handshake in 249 ms on average, which is faster than 56% of all working MCP servers we measure. The comparison comes from our own checks across the whole registry, every 15 minutes.