Connector guide2-minute read4 MCP toolsEnglish · Deutsch · Italiano

Cómo conectar UK Companies House a ChatGPT — via MCP

Search and inspect the official UK companies register: company profiles, directors and secretaries, filing history. Free public API with a 600 requests / 5 minutes rate limit. The UK equivalent of the German Handelsregister.

HCBy HelpCode teamUpdated 2 min read Open source on GitHub

No credit card · 7-day trial · Self-host alternative available

MCP connector

UK Companies House

Search and inspect the official UK companies register: company profiles, directors and secretaries, filing history. Free public API with a 600 requests / 5 minutes rate limit. The UK equivalent of the German Handelsregister.

Tools

4

Region

GB

Category

Government

Authentication

Required env vars

COMPANIES_HOUSE_API_KEY
Install in one click on Cloud

7-day free trial · No credit card

  • 7-day free trial
    No credit card required
  • GDPR & SOC 2 ready
    EU data residency, audit logs
  • Open-source on GitHub
    Source-available BSL-1.1
  • Works with ChatGPT, Claude, Gemini
    Any MCP-compatible client

No install? Use cloud.anythingmcp.com directly.

Sign in, install the UK Companies House in one click, paste the credentials, mint an MCP API key — done. No Docker, no git clone, no local server to run.

Open Cloud

💡 ¿Sin instalación? Usa cloud.anythingmcp.com directamente. Inicia sesión, pulsa Connectors → UK Companies House, pega tus credenciales, genera una MCP API key — listo. Sin Docker, sin git clone, sin servidor local.

UK Companies House + ChatGPT

Search and inspect the official UK companies register: company profiles, directors and secretaries, filing history. Free public API with a 600 requests / 5 minutes rate limit. The UK equivalent of the German Handelsregister.

Requisitos previos

Las instrucciones de configuración completas están incluidas en el conector (visibles en el store al seleccionarlo). Las variables de entorno requeridas:

COMPANIES_HOUSE_API_KEY

Paso 1 — Obtener credenciales

Getting an API key: register a free account at https://developer.company-information.service.gov.uk → 'Manage applications' → 'Create an application' (pick Live or Test) → 'Create new key' → REST. Copy the generated key into COMPANIES_HOUSE_API_KEY.

Authentication quirk: Companies House uses HTTP Basic Auth where the API key is the username and the password is empty (the canonical curl shape is -u API_KEY:). This adapter mirrors that — leave the password configuration empty.

Company numbers: always 8 characters, zero-padded (e.g. 00006400 not 6400). The search endpoint returns matches with the canonical number you can feed into the other tools.

…(continued in the in-app connector instructions)

Paso 2 — Instalar el adapter

git clone https://github.com/HelpCode-ai/anythingmcp.git
cd anythingmcp && docker compose up -d

Paso 3 — Añadir el conector en ChatGPT

ChatGPT soporta servidores MCP a través de la función Connectors (planes Plus / Pro / Team / Enterprise). El plan gratuito no admite conectores personalizados.

  1. Abre ChatGPT → Settings → Connectors (o pulsa el icono 🔧 en el composer → Manage connectors).
  2. Pulsa "Add custom connector".
  3. Rellena:
    • Name: UK Companies House
    • MCP server URL: https://cloud.anythingmcp.com/mcp
    • Authentication: Bearer token → pega tu MCP API key (de AnythingMCP → Profile → MCP API Keys → New Key)
  4. Pulsa Connect para autorizar.

Herramientas disponibles

ToolWhat it does
companies_house_search_companySearch the UK companies register by company name or number
companies_house_get_company_profileFetch the full profile for a UK company by its 8-character zero-padded company number
companies_house_list_officersList directors, secretaries and other officers (current and resigned) for a UK company
companies_house_list_filingsList the filing history (accounts, confirmation statements, officer appointments, share allotments, …) for a UK company

FAQ

¿Funciona el plan gratuito de ChatGPT con los Connectors MCP personalizados? No — se necesita Plus, Pro, Team o Enterprise.

Siguientes pasos

Ready to ship

Your UK agent is one click away.

Install the connector, paste the key, prompt ChatGPT. Free for 7 days, no credit card.