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walkercgraham

Companies House MCP Server

by walkercgraham
OverviewSchemaSourceRelated ServersDiscussionsAdmin
Python
Hybrid

Companies House MCP Server

Work in progress. Read-only MCP server for the UK Companies House public register, with a reproducible tool-use eval suite.

How this differs

Several community Companies House MCP servers already exist, for example:

This project aims to be different in four ways:

  1. A published, reproducible tool-use eval. 50 cases run offline against recorded API responses, with results per model and a changelog showing how scores moved as tool descriptions improved.

  2. Task-shaped tools. Six tools return concise, LLM-friendly outputs with next-step hints, instead of passing the raw API JSON straight through.

  3. Responsible handling of personal data. Officers and PSCs are real people, so dates of birth are dropped, addresses are cut to town and postcode, and logs contain no personal data.

  4. Both transports. stdio for local use, and streamable HTTP with bearer-token auth for hosted use.

This server cannot be deployed

One endpoint for every MCP toolRayrun runs every MCP server behind one URL and holds the credentials. Each call is decided per client, tool, and argument, then recorded.ray.runAd

Maintenance

ActivityMaintained
ResponsivenessNo issues

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