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io.github.hellosverre/brreg

Registre officiel Recherche et web

MCP server for Norway's Brønnøysund business registry — lookup, search, roles.

Code source Documentation

Installation

Ajoutez ceci à la configuration MCP de votre client (Claude Desktop : claude_desktop_config.json ; Cursor : .cursor/mcp.json ; VS Code et les autres utilisent la même forme « mcpServers »).

NPM package brreg-mcp
Claude Code 
claude mcp add brreg -- npx -y brreg-mcp@0.1.1
Configuration JSON (Claude Desktop, Cursor, VS Code) 
{
    "mcpServers": {
        "brreg": {
            "command": "npx",
            "args": [
                "-y",
                "brreg-mcp@0.1.1"
            ]
        }
    }
}

Documentation

Tirée du README du projet sur GitHub, actualisée chaque semaine. Les liens ouvrent GitHub.

Sommaire
  1. brreg-mcp
  2. Why
  3. Install
  4. Tools
  5. Example prompts
  6. Data source
  7. Development
  8. License
  9. Disclaimer

brreg-mcp

MCP server for the Norwegian Central Coordinating Register for Legal Entities (Brønnøysundregistrene / Enhetsregisteret). Gives Claude Code and other MCP-compatible clients direct access to Norwegian company data — lookup, search, roles, subunits, and live updates.

No API key needed. Data is served by the free, public Brønnøysund Open Data API.

Why

Norwegian devs, accountants, and analysts constantly need to look up orgnumbers, find board members, or track subsidiary changes. Doing it through the web UI is slow; doing it with curl loses context. With this MCP, you just ask Claude.

Install

Claude Code

Add to your MCP config (~/.claude/settings.json or per-project .claude/settings.json):

{
  "mcpServers": {
    "brreg": {
      "command": "npx",
      "args": ["-y", "brreg-mcp"]
    }
  }
}

Restart Claude Code. Verify with /mcp — you should see brreg listed with 5 tools.

Claude Desktop

claude_desktop_config.json:

{
  "mcpServers": {
    "brreg": {
      "command": "npx",
      "args": ["-y", "brreg-mcp"]
    }
  }
}
Cursor / Windsurf / Zed / any MCP client

Same command: npx, args: ["-y", "brreg-mcp"] configuration.

Local development
git clone https://github.com/hellosverre/brreg-mcp
cd brreg-mcp
npm install
npm run build

Then point your MCP client at node /absolute/path/to/brreg-mcp/dist/index.js.

Tools

ToolWhat it does
lookup_companyFull details for one company by its 9-digit orgnr — name, address, NACE codes, employees, VAT status, bankruptcy, foundation date.
search_companiesSearch by name and optional filters (municipality, org form, industry code, VAT-registered, bankruptcy status). Paginated.
get_company_rolesAll registered roles (board, CEO, chair, auditor, sole proprietor) for a company.
search_subunitsFind subunits (branch offices, production sites) — scope to a parent company or by municipality/industry.
get_recent_updatesFeed of entity changes for monitoring new registrations, bankruptcies, status shifts.

Example prompts

"Look up orgnr 984661177 and show me the board."

"Find all VAT-registered software consultancies (NACE 62.010) in Oslo."

"List every subunit of Vygruppen AS."

"What Norwegian companies were just registered in the last hour?"

Data source

All data comes from data.brreg.no. Per Brønnøysund's open data terms, the data is free to use. Some endpoints (roles with personal identification numbers) require Maskinporten authentication and are not exposed by this server.

Development

npm install          # install deps
npm run dev          # run server in watch mode via tsx
npm run smoke        # hit the real brreg API to verify connectivity
npm run build        # compile to dist/
npx tsx scripts/mcp-probe.ts  # end-to-end stdio test

License

MIT

Disclaimer

Not affiliated with Brønnøysundregistrene or the Norwegian government. This is an independent open-source project using the public open-data API.

Questions fréquentes

Qu'est-ce que io.github.hellosverre/brreg ?

MCP server for Norway's Brønnøysund business registry — lookup, search, roles.

Comment installer io.github.hellosverre/brreg ?

Il s'exécute sur votre machine. Dans Claude Code : claude mcp add brreg -- npx -y brreg-mcp@0.1.1. Pour les autres clients, collez la configuration JSON de cette page dans leurs réglages MCP.

Faut-il une clé API pour io.github.hellosverre/brreg ?

Son entrée au registre n'indique aucune clé ni secret obligatoire. Certaines fonctions peuvent tout de même demander un compte auprès du service auquel il se connecte.

io.github.hellosverre/brreg est-il open source ?

Oui. Son code est sur GitHub sous licence MIT.

Qui maintient io.github.hellosverre/brreg ?

Il est publié par hellosverre. AI.tn le référence sans le maintenir ni le recommander.

Issu du registre MCP officiel. Être listé n'est pas une recommandation : vérifiez le code et les permissions d'un serveur avant de lui donner accès à vos données.