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ChatGPT UK Data: Reference ip_lookup

How to: ChatGPT UK Data: Reference ip_lookup

client:ChatGPT transport:streamable-http tool:ip_lookup

Add UK Data: Reference to ChatGPT

  1. 01

    Open Settings → Connectors → Advanced → Developer mode and merge this in. Keep any servers already there.

https://ukdata.reliness.co.uk/mcp/reference
  1. 02

    Save the file and restart ChatGPT.

  2. 03

    Ask for something ip_lookup does. ChatGPT lists the server's tools on connect and calls ip_lookup itself — you do not invoke it by name.

  3. 04

    If nothing happens, check the server is running and that UK Data: Reference's identifier in your config matches the one above exactly.

Custom connectors are a paid-plan feature and take a remote URL only. ChatGPT cannot run a packaged server locally. ChatGPT docs

Same tool, other clients

This list was read from the server itself, by connecting to it and calling tools/list on 14 November 2026. It is what the server actually exposes, not what its listing claims.

Mutating and Read-only are read off each tool's name, not its schema — a hint, not a guarantee. The registry stores tool names only; connect the server for its live schemas.