registry-mcp — national company registries

Name: registry-mcp — national company registries
Author: foretak

by foretakversion 0.4.2i★ –iComputer or cloud

Registry nameio.github.foretak/registry-mcp

Install

Overview

Description from the maker (original English)

The company registry MCP: brreg orgnr, Companies House, Bolagsverket organisationsnummer.

PopNx MCP’s three pillars

These three are never merged into one score: opinions, measurements and popularity are different things.

User voiceiNo reviews yetReviews open together with accounts in a later step
Our basic checksi1 of 1 passedChecked from public information; code not scanned yet
UsageiNot measured yet★ –

What you can do with it

We have not written a plain-language summary for this one yet. Below are the facts we read from the registry.

Connection: Computer or cloud
Transport: stdio, Streamable HTTP
Category: Other
You need to fill in: COMPANIES_HOUSE_API_KEY, BOLAGSVERKET_CLIENT_ID, BOLAGSVERKET_CLIENT_SECRET

Install

Pick the AI app you use, then copy the settings.

Before you install

Basic checks: 1 of 1 passed
Runs on the maker’s server: what you ask it goes through their server.
You fill in yourself: REGISTRY_MCP_CONTACT_EMAIL, COMPANIES_HOUSE_API_KEY, BOLAGSVERKET_CLIENT_ID, BOLAGSVERKET_CLIENT_SECRET, BOLAGSVERKET_ENVIRONMENT

Values marked secret are keys to your account. Never share them or paste them into a chat.

You need

Runs in the cloudNothing to install; it connects over the internet
npmNode.js installed (for the npx command)

Which app do you use?

ClaudeClaude CodeCursorVS CodeChatGPT

Pick your app above. We remember it, so next time the button says “Install in …”.

Works in Claude on the web, desktop and mobile:

Open Settings → Connectors
Press Add custom connector
Paste the address below and press Add
If it asks you to sign in, sign in with the maker

https://api.foretak.dev/mcp

Or run it on your computer

Open Claude Desktop → Settings → Developer → Edit Config, and paste this into claude_desktop_config.json

{
  "mcpServers": {
    "registry": {
      "command": "npx",
      "args": [
        "-y",
        "registry-mcp"
      ],
      "env": {
        "REGISTRY_MCP_CONTACT_EMAIL": "your-value",
        "COMPANIES_HOUSE_API_KEY": "your-value",
        "BOLAGSVERKET_CLIENT_ID": "your-value",
        "BOLAGSVERKET_CLIENT_SECRET": "your-value",
        "BOLAGSVERKET_ENVIRONMENT": "your-value"
      }
    }
  }
}

Run this in your terminal

claude mcp add --transport http registry https://api.foretak.dev/mcp

Or run it on your computer

claude mcp add registry --env REGISTRY_MCP_CONTACT_EMAIL=your-value --env COMPANIES_HOUSE_API_KEY=your-value --env BOLAGSVERKET_CLIENT_ID=your-value --env BOLAGSVERKET_CLIENT_SECRET=your-value --env BOLAGSVERKET_ENVIRONMENT=your-value -- npx -y registry-mcp

Fill in the empty values before running it.

Open in Cursor

Or copy the settings yourself

Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json

{
  "mcpServers": {
    "registry": {
      "url": "https://api.foretak.dev/mcp"
    }
  }
}

Or run it on your computer

Open in Cursor

Or copy the settings yourself

Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json

{
  "mcpServers": {
    "registry": {
      "command": "npx",
      "args": [
        "-y",
        "registry-mcp"
      ],
      "env": {
        "REGISTRY_MCP_CONTACT_EMAIL": "your-value",
        "COMPANIES_HOUSE_API_KEY": "your-value",
        "BOLAGSVERKET_CLIENT_ID": "your-value",
        "BOLAGSVERKET_CLIENT_SECRET": "your-value",
        "BOLAGSVERKET_ENVIRONMENT": "your-value"
      }
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

Open in VS Code

Or copy the settings yourself

Paste into .vscode/mcp.json in your project

{
  "servers": {
    "registry": {
      "type": "http",
      "url": "https://api.foretak.dev/mcp"
    }
  }
}

Or run it on your computer

Open in VS Code

Or copy the settings yourself

Paste into .vscode/mcp.json in your project

{
  "servers": {
    "registry": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "registry-mcp"
      ],
      "env": {
        "REGISTRY_MCP_CONTACT_EMAIL": "your-value",
        "COMPANIES_HOUSE_API_KEY": "your-value",
        "BOLAGSVERKET_CLIENT_ID": "your-value",
        "BOLAGSVERKET_CLIENT_SECRET": "your-value",
        "BOLAGSVERKET_ENVIRONMENT": "your-value"
      }
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

ChatGPT connects only to servers on the internet:

Open ChatGPT on the web → Settings → Connectors (Apps)
Press Create or Add (some plans need Developer mode under Advanced first)
Paste the address below, give it a name and save
If it asks you to sign in, sign in with the maker

https://api.foretak.dev/mcp

Menu names can differ slightly by plan and over time.

Your choice stays on this device in a cookie; no account needed.

Values you fill in

REGISTRY_MCP_CONTACT_EMAIL env
Contact address sent in the User-Agent to the national registry, as Brønnøysundregistrene asks of API clients. Unset means an anonymous client, which may be blocked upstream.
COMPANIES_HOUSE_API_KEY secret env
Companies House REST API key, required for the United Kingdom (GB). Free from developer.company-information.service.gov.uk. Unset means GB lookups return an upstream_error naming this variable; every…
BOLAGSVERKET_CLIENT_ID secret env
Bolagsverket OAuth 2 client id, required for Sweden (SE) together with BOLAGSVERKET_CLIENT_SECRET. Free, no contract: request both from Bolagsverket's kundanmälan form. Unset means SE lookups return…
BOLAGSVERKET_CLIENT_SECRET secret env
Bolagsverket OAuth 2 client secret, the other half of BOLAGSVERKET_CLIENT_ID. Both are needed before Sweden (SE) can answer.
BOLAGSVERKET_ENVIRONMENT env
Which Bolagsverket environment the Swedish credentials belong to: 'production' (default) or 'test'. It selects the data host and the token host as a pair, so the two can never be mixed.

These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.

What it can do

We have not read this server’s tool list yet; we check endpoints in rotation.

Basic checksi

We check information anyone can see; we have not read the code. Checks that do not apply are left out of the count. · Checked Nov 8, 2026

✓ Pass
Maker matches the repo
The registry name was verified with the GitHub account foretak, which owns the repo
… Not checked yet
Still maintained
We have not read this repo from GitHub yet
… Not checked yet
Has a licence
We have not read this repo from GitHub yet
… Not checked yet
Endpoint responds
Not checked yet; we check endpoints in rotation
… Not checked yet
Sign-in with OAuth
Not checked yet; we check endpoints in rotation
… Not checked yet
No hidden instructions in tool descriptions
Not checked yet; we read the tool list when we check the endpoint

Compared with others in Otheri

More stars than 0% of the other 18431 servers in this category
Published to the registry more recently than 41% of the other 18431 servers in this category
Basic checks equal to or better than 100% of the other 18431 servers in this category

Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.

Common questions

Is registry-mcp — national company registries safe?

It passed 1 of 1 applicable basic checks. We have not read the code. Before adding a key or token, see what access the server asks for and use a key with only the permissions you need.

What keys or codes does it need?

You need to fill in: COMPANIES_HOUSE_API_KEY, BOLAGSVERKET_CLIENT_ID, BOLAGSVERKET_CLIENT_SECRET

Does it run on my computer or in the cloud?

Either way works: install it on your computer or connect to the cloud version.

Is it still maintained?

The GitHub repo last changed –, and the latest version (0.4.2) reached the registry 2 months ago.

Which apps can use it?

Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. It connects by URL, so apps that accept remote MCP servers work too, such as ChatGPT in developer mode.

What can I use instead?

In the same category: Spec Driven Development, Remote Desktop Commander, Filesystem MCP

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README from the maker

Open the README

Copied from the maker’s repo as written. PopNx MCP has not reviewed or endorsed it. HTML, images and scripts are removed. Links lead off this site.

registry-mcp — the company registry MCP

Company data for AI agents, any country. One MCP server and REST API, three national registers today: the United Kingdom's Companies House, looked up by company number; Norway's Enhetsregisteret / Brønnøysundregistrene (brreg), looked up by organisasjonsnummer (orgnr); and Sweden's Bolagsverket, looked up by organisationsnummer — one JSON shape whichever you ask.

claude mcp add registry-mcp --transport http https://api.foretak.dev/mcp?src=readme

No install step, over stdio:

claude mcp add registry-mcp -- uvx registry-mcp

What makes it worth a tool slot:

Deadlines that cite the rule, not just a date. company_deadlines gives the next filing date and names why in applies_because — a Norwegian legal form's statutory duty, or "Companies House publishes this date for the company itself" when the register states it rather than us computing it. Quote the reason, not just the number.
Never more than 24 hours stale, and it says so. Every response carries cached and fetched_at. OpenCorporates' own knowledge base tells users to "allow 30 days" for a correction to reach its site — a 30× freshness gap, stated by the incumbent about itself.
Seven tools, not fifty — five registry tools plus two ChatGPT connector aliases. Tool-selection accuracy degrades past 30-50 tools loaded into an agent's context, and some clients cap around 40. Seven tools is roughly 17% of that budget, next to competitors in this space shipping 23 to 78 tools for the same job.

Security. Read-only, always — nothing here writes to a register or anywhere else. No credentials are required from a caller; this deployment's own upstream credential (COMPANIES_HOUSE_API_KEY) is read from the environment and never logged or returned. The base lookup calls three named upstreams and nothing else: data.brreg.no, api.company-information.service.gov.uk and gw.api.bolagsverket.se. include=["lei"]/include=["parents"] additionally call api.gleif.org (GLEIF, CC0, keyless); include=["peppol"] additionally resolves a DNS record at the Peppol SML and calls whichever SMP host it names for that participant, falling back to the Peppol Directory (directory.peppol.eu) only when neither answers — see the attachments above. No personal data beyond what each national register already publishes about the entity itself — and because a Swedish sole trader's company number *is* their personnummer, the usage log stores no identifier at all for a country whose identifiers can be a natural person's (legal/privacy.md). This service does not perform sanctions, PEP or adverse-media screening, and it does not verify bank account details. Details: SECURITY.md.

One-click install, for a remote streamable-HTTP server:

Other clients (Claude Desktop, Cursor, VS Code, Cline, plain JSON configs): see docs/clients.md.

Add to ChatGPT

ChatGPT reaches an MCP server through a custom connector, and its deep research mode calls exactly two tools — search and fetch — which this server ships alongside the five registry tools. In ChatGPT, open Settings → Connectors, add a custom connector, and give it:

https://api.foretak.dev/mcp?src=readme

No authentication, no key, no account. If your ChatGPT plan does not show custom connectors under Settings → Connectors, turn on Settings → Security and login → Developer mode first, then add the URL from https://chatgpt.com/plugins.

search takes one free-text query — a company name, a national identifier, or a name plus a country ("Tesco United Kingdom") — and returns citable rows; fetch takes a row's id ("NO:923609016") and returns that company's register record and its statutory filing deadlines, with the full JSON of both in metadata.

Add to Claude Desktop

Claude Desktop takes the same URL as a custom connector: Settings → Connectors → Add custom connector, then https://api.foretak.dev/mcp?src=readme. No key. For a local stdio install instead, see Configuration.

Status: 0.4.2, live — GET /health returns {"version":"0.4.2","countries":["GB","NO","SE"]}. The five registry tools and their response shapes are frozen; two connector aliases (search, fetch) wrap them for ChatGPT and add no new shape. The hosted API at api.foretak.dev is live, and listed in the official MCP registry as io.github.foretak/registry-mcp. Countries: United Kingdom (Companies House), Norway (brreg), Sweden (Bolagsverket) — see below for each country's identifier format and example calls.

Add to Claude Code

The same two commands as above — Streamable HTTP or local stdio. To add it as a project-level .mcp.json file instead of the CLI, see Configuration.

What it returns

$ curl https://api.foretak.dev/v1/NO/company/923609016

{ "country": "NO", "registry": "brreg", "id": "923609016", "id_formatted": "923 609 016", "id_scheme": "organisasjonsnummer", "euid": null, "name": "EQUINOR ASA", "legal_form_code": "ASA", "legal_form": "Public limited company", "legal_form_local": "Allmennaksjeselskap", "status": "active", "is_active": true, "registered_at": "1995-03-12", "vat_registered": true, "vat_number": "NO923609016MVA", "vat_registered_at": "1989-07-01", "employees": 21239, "share_capital": 5976872600.0, "share_capital_currency": "NOK", "business_address": {"lines": ["Forusbeen 50"], "postal_code": "4035", "city": "STAVANGER"}, "advertising_protected": null, "source": "Enhetsregisteret (Brønnøysundregistrene)", "license": "NLOD 2.0" }

Abridged — the full CompanyReport also carries previous_names, industry_codes, registers, purpose, parent_id, confidence, cached, fetched_at and notes. Every field is documented in llms-full.txt §5.

euid is the EU-wide identifier some member-state registers publish (Finland does; none of ours do yet) — never the LEI, never constructed from parts. advertising_protected is true/false/null: whether the register marks this entity as protected against direct-marketing use, null meaning the register publishes no such flag at all (Norway and the UK, today); where it is true (Sweden's *reklamspärr*, for one), a notes sentence states it and that marking must travel with any contact details you pass on.

The United Kingdom, same shape, same abridgement:

$ curl https://api.foretak.dev/v1/GB/company/00445790

{ "country": "GB", "registry": "companies-house", "id": "00445790", "id_formatted": null, "id_scheme": "company number", "euid": null, "name": "TESCO PLC", "legal_form_code": "plc", "legal_form": "Public limited company", "status": "active", "is_active": true, "registered_at": "1947-11-27", "vat_registered": null, "vat_number": null, "employees": null, "employees_reported": false, "registers": {"insolvency": false}, "industry_codes": [{"code": "47110", "description": null, "scheme": "SIC 2007", "rank": 1}], "business_address": {"lines": ["Tesco House, Shire Park", "Kestrel Way"], "postal_code": "AL7 1GA", "city": "Welwyn Garden City"}, "advertising_protected": null, "published_deadlines": [ {"kind": "annual_accounts", "due_date": "2027-08-26", "period_end": "2027-02-26", "overdue": false, "source": "accounts.next_accounts.due_on"}, {"kind": "confirmation_statement", "due_date": "2027-07-02", "period_end": "2027-06-18", "overdue": false, "source": "confirmation_statement.next_due"} ], "source": "Companies House (UK)", "license": "Crown copyright — Companies House public register, free to re-use" }

published_deadlines carries the dates the register publishes itself, with the upstream field each came from. It is [] for Norway and Sweden, which compute all of their own.

Sweden, added in 0.3.0, is where "one shape" starts to earn the claim:

$ curl https://api.foretak.dev/v1/SE/company/5560160680

{ "country": "SE", "registry": "bolagsverket", "id": "5560160680", "id_formatted": "556016-0680", "id_scheme": "organisationsnummer", "euid": null, "name": "Telefonaktiebolaget LM Ericsson", "legal_form_code": "AB", "legal_form": "Private or public limited company", "legal_form_local": "Aktiebolag", "status": "active", "is_active": true, "registered_at": "1918-08-19", "vat_registered": null, "vat_number": null, "employees": null, "employees_reported": false, "industry_codes": [{"code": "70100", "description": "Verksamheter som utövas av huvudkontor", "scheme": "SNI 2007", "rank": 1}], "postal_address": {"postal_code": "16483", "city": "STOCKHOLM", "country_code": "SE"}, "advertising_protected": null, "published_deadlines": [], "source": "Bolagsverket (bolagsverket.se)", "license": "Free re-use (Bolagsverket/SCB high-value datasets, EU Open Data Directive) — the publisher names no licence" }

Bolagsverket names no licence for this data, so neither do we: the string says what the permission is and says plainly that there is no licence name to quote, because a familiar name in that field would be a fabrication.

Sweden publishes no status field at all. status is derived from three independent signals — a strike-off date, an ongoing winding-up or restructuring procedure, and Statistics Sweden's "economically active" flag — and is_active therefore means *on the register and not winding down*, which is not the same as trading. Where any of that is unavailable the answer is unknown, never active.

Two dates are computed, and each carries the provision it comes from:

$ curl "https://api.foretak.dev/v1/SE/company/5560160680/deadlines?today=2026-09-07"

{"kind": "general_meeting", "due_date": "2027-06-30", "days_until": 296, "rolled_forward"

Only the beginning is shown; read the rest in the repo

registry-mcp — national company registries

Overview

PopNx MCP’s three pillars

What you can do with it

Install

Before you install

Or run it on your computer

Or run it on your computer

Or run it on your computer

Or run it on your computer

Values you fill in

What it can do

Basic checksi

Maker matches the repo

Still maintained

Has a licence

Endpoint responds

Sign-in with OAuth

No hidden instructions in tool descriptions

Compared with others in Otheri

Common questions

Alternatives

Spec Driven Development

Remote Desktop Commander

Filesystem MCP

README from the maker

registry-mcp — the company registry MCP

Add to ChatGPT

Add to Claude Desktop

Add to Claude Code

What it returns