Brreg

Name: Brreg
Author: adisinghstudent

adisinghstudent/brreg

3 installs
Updated July 2, 2026
adisinghstudent/brreg

This is a copy of brreg by aradotso - installs and ranking accrue to the original listing.

brreg is a Claude Code skill that documents how to query the Brønnøysundregistrene open API to search and retrieve data on Norwegian companies.

About

This skill teaches Claude Code to query the Brønnøysundregistrene (Norwegian Business Registry) open API. It documents the base URL, search parameters, entity and sub-entity endpoints, organization-form codes, and nightly bulk downloads. A developer uses it to look up Norwegian company data such as org numbers, status, industry, and location.

Queries the official Brønnøysundregistrene open API for Norwegian company data
Documents search parameters, endpoints, org-form codes, and bulk downloads
Covers ~1.2 million registered Norwegian companies

Brreg by the numbers

3 all-time installs (skills.sh)
Data as of Jul 28, 2026 (Skillselion catalog sync)

At a glance

brreg capabilities & compatibility

Capabilities: company lookup · registry search · api query
Use cases: api development · research
Runs: Runs locally
Pricing: Free

From the docs

What brreg says it does

Access the official open API from Brønnøysundregistrene to search and retrieve data about all registered companies in Norway.

SKILL.md

Search and retrieve Norwegian company data from Brønnøysundregistrene (the Norwegian Business Registry). Access all ~1.2 million registered companies in Norway.

SKILL.md

npx skills add https://github.com/adisinghstudent/brreg --skill brreg

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Installs	3
Last updated	July 2, 2026
Repository	adisinghstudent/brreg ↗

What it does

Search and retrieve Norwegian company data (org numbers, status, industry, location) from the official Brreg open API.

Who is it for?

Developers who need to look up Norwegian company data such as org numbers, status, or industry via the official registry API.

Skip if: Non-Norwegian company data, since the API only covers Brønnøysundregistrene registrations.

When should I use this skill?

A user asks about Norwegian companies, org numbers, or company status.

What you get

curl calls to the Brreg API
search-parameter reference
organization-form code table

By the numbers

Covers ~1.2 million registered companies in Norway
Bulk datasets updated nightly around 05:00 AM

Files

SKILL.mdMarkdownGitHub ↗

Norwegian Business Registry (Brreg)

Access the official open API from Brønnøysundregistrene to search and retrieve data about all registered companies in Norway.

When to Use

When the user asks about Norwegian companies
When searching for company information in Norway
When looking up organization numbers (organisasjonsnummer)
When finding companies by name, location, industry, or other criteria
When checking company status (bankruptcy, dissolution, etc.)

API Base URL

https://data.brreg.no/enhetsregisteret/api

Key Endpoints

Search Companies (Enheter)

curl "https://data.brreg.no/enhetsregisteret/api/enheter?navn=SEARCH_TERM&size=20"

Common parameters:

Parameter	Description
`navn`	Company name (partial match)
`organisasjonsnummer`	9-digit org number (comma-separated for multiple)
`organisasjonsform`	Organization type: AS, ENK, NUF, ANS, DA, etc.
`naeringskode`	Industry code (NACE)
`kommunenummer`	4-digit municipality code
`postadresse.postnummer`	Postal code
`forretningsadresse.postnummer`	Business address postal code
`konkurs`	true/false - bankruptcy status
`underAvvikling`	true/false - dissolution status
`registrertIMvaregisteret`	true/false - VAT registered
`fraAntallAnsatte`	Minimum employees
`tilAntallAnsatte`	Maximum employees
`fraRegistreringsdatoEnhetsregisteret`	Registration date from (YYYY-MM-DD)
`tilRegistreringsdatoEnhetsregisteret`	Registration date to (YYYY-MM-DD)
`size`	Results per page (default: 20, max depth: 10000)
`page`	Page number (0-indexed)

Get Company by Org Number

curl "https://data.brreg.no/enhetsregisteret/api/enheter/123456789"

Search Sub-entities (Underenheter)

Branch offices and departments:

curl "https://data.brreg.no/enhetsregisteret/api/underenheter?overordnetEnhet=123456789"

Get Organization Forms

List all valid organization types:

curl "https://data.brreg.no/enhetsregisteret/api/organisasjonsformer"

Common organization forms:

Code	Description
AS	Aksjeselskap (Private limited company)
ASA	Allmennaksjeselskap (Public limited company)
ENK	Enkeltpersonforetak (Sole proprietorship)
NUF	Norskregistrert utenlandsk foretak (Foreign enterprise)
ANS	Ansvarlig selskap (General partnership)
DA	Selskap med delt ansvar (Shared liability partnership)
SA	Samvirkeforetak (Cooperative)
STI	Stiftelse (Foundation)

Get Recent Updates

Track new registrations and changes:

curl "https://data.brreg.no/enhetsregisteret/api/oppdateringer/enheter?dato=2024-01-01T00:00:00.000Z"

Bulk Downloads

Complete datasets (updated nightly ~05:00 AM):

Format	URL
JSON (gzipped)	https://data.brreg.no/enhetsregisteret/api/enheter/lastned
CSV	https://data.brreg.no/enhetsregisteret/api/enheter/lastned/csv
Excel	https://data.brreg.no/enhetsregisteret/api/enheter/lastned/regneark

Example Queries

Find all AS companies in Oslo with 50+ employees

curl "https://data.brreg.no/enhetsregisteret/api/enheter?organisasjonsform=AS&kommunenummer=0301&fraAntallAnsatte=50&size=100"

Search for tech companies

curl "https://data.brreg.no/enhetsregisteret/api/enheter?navn=tech&size=50"

Find companies registered this year

curl "https://data.brreg.no/enhetsregisteret/api/enheter?fraRegistreringsdatoEnhetsregisteret=2024-01-01&size=100"

Get all subsidiaries of a company

curl "https://data.brreg.no/enhetsregisteret/api/underenheter?overordnetEnhet=923609016"

Response Format

Responses are in HAL+JSON format with _embedded containing results and page containing pagination info:

{
  "_embedded": {
    "enheter": [
      {
        "organisasjonsnummer": "123456789",
        "navn": "Company Name AS",
        "organisasjonsform": {
          "kode": "AS",
          "beskrivelse": "Aksjeselskap"
        },
        "antallAnsatte": 50,
        "forretningsadresse": {
          "adresse": ["Street 1"],
          "postnummer": "0150",
          "poststed": "OSLO",
          "kommune": "OSLO",
          "kommunenummer": "0301"
        },
        "naeringskode1": {
          "kode": "62.010",
          "beskrivelse": "Programmeringstjenester"
        }
      }
    ]
  },
  "page": {
    "size": 20,
    "totalElements": 150,
    "totalPages": 8,
    "number": 0
  }
}

Notes

API is free and open (NLOD license)
No authentication required for public data
Rate limiting may apply for heavy usage
Results limited to 10,000 per query (use bulk downloads for complete data)
Data updated continuously during business hours

Documentation

Official API docs: https://data.brreg.no/enhetsregisteret/api/dokumentasjon/en/index.html
OpenAPI spec: https://raw.githubusercontent.com/brreg/openAPI/master/specs/enhetsregisteret.json