CompanyStack

uk.co.companystackv0.1.0Updated Oct 10, 2026

UK company data from Companies House: search, officers, PSCs, filings, financials, KYB checks.

VerifiedStreamable HTTPWeb executableFinanceBusiness & Commerce

Overview

AI-generated overview

Lets an assistant look up UK company data from Companies House, including officers, PSCs, filings, financials and KYB checks.

What it does
CompanyStack is a remote MCP endpoint that gives an assistant access to UK company data sourced from Companies House. According to the registry description, it covers company search, officers, people with significant control (PSCs), filings, financials and know-your-business (KYB) checks. The manifest does not list individual tool names, so the exact tool set is not documented here.
When to use it
Useful when an assistant needs to research UK companies, verify a business counterparty, or pull filing and financial details into a workflow. It is aimed at UK company data specifically, so it is not relevant for other jurisdictions.
Requirements
A remote MCP connection over streamable HTTP to the provider's endpoint. An API key is supplied in the X-Api-Key header; the manifest says keys start with cs_ and can be created through the provider's signup. Clients that support MCP sign-in (OAuth) may be able to omit the key once sign-in is offered.
Before you install
The server requires a credential: an API key passed in the X-Api-Key header. Treat that key as a secret and check the provider's terms, rate limits and any usage costs before relying on it. The manifest declares no authentication beyond the key, and no tool list is published, so review what the server can access before installing.

Installation

In SourceWeft

  1. Open CompanyStack in the dashboard and add it to a workspace.
  2. Enable the server for the chats that should use its tools.

Web executable via Streamable HTTP. Remote servers run from the web runtime once configured in a workspace.

Other MCP clients

Add this to your client's mcpServers config.

{
  "mcpServers": {
    "mcp": {
      "type": "http",
      "url": "https://api.companystack.co.uk/mcp"
    }
  }
}

Tools

0
Tool metadata has not been indexed yet.

Version history

1
  1. v0.1.0LatestOct 10, 2026