io.github.vdmeu/registrum-mcp
Search UK companies, get financials, directors, and networks via the Registrum Companies House API.
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Registrum MCP Server
Use UK Companies House data directly inside Claude, Cursor, and any other MCP-compatible AI client.
5 tools, zero boilerplate. Search companies, pull structured financials, list directors, and map corporate networks — all from the Registrum API.
Installation
Claude Desktop
Add to ~/.claude/claude_desktop_config.json:
{
"mcpServers": {
"registrum": {
"command": "npx",
"args": ["-y", "@registrum/mcp"],
"env": {
"REGISTRUM_API_KEY": "reg_live_..."
}
}
}
}
Get a free API key at registrum.co.uk (50 calls/month free).
Cursor
Add to .cursor/mcp.json in your project, or to ~/.cursor/mcp.json globally — same format as above.
Smithery
Find this server at smithery.ai/server/@registrum/mcp and install with one click.
Tools
| Tool | Description |
|---|---|
search_company | Search for UK companies by name |
get_company | Enriched company profile (age, overdue flags, SIC descriptions) |
get_financials | Structured P&L + balance sheet from iXBRL filings |
get_directors | Directors with full appointment history across all companies |
get_network | Corporate network via shared director connections |
Example prompts
"Who are the directors of Tesco PLC and what other companies are they associated with?"
"Get the latest financials for company 00445790"
"Search for companies named 'Rolls-Royce' and show me their status"
"Map the director network for Barratt Developments to depth 2"
Plans
| Plan | Price | Calls/month |
|---|---|---|
| Free | £0 | 50 |
| Pro | £49/mo | 2,000 |
| Enterprise | £149/mo | 10,000 |
API reference
Full API docs at api.registrum.co.uk/docs