Integration · Productivity

Connect Claude & ChatGPT to Proff

Ask your AI who owns a company, who sits on its board or how its revenue and profit have developed, and it looks it up in Proff. It covers company registers in Denmark, Norway, Sweden and Finland, including shareholders, group structure and people's roles across companies.

Connect Proff free

Free plan, no credit card. Takes about a minute.

Try asking

“Show revenue, profit and equity for Nordic Tools ApS for recent years.”
The AI finds the company in the Danish register and reads its key figures and financial statements.
“Who owns Nordic Tools ApS, directly and through other companies?”
It lists the shareholders ranked by share percentage and the group structure with parent companies.
“Which boards does Lars Nielsen sit on?”
It searches for the person and reads all of his current and past company roles.

What your AI can do

Company profiles

Registry details, industry, key figures and financial statements such as revenue, profit and equity.

Owners and groups

Shareholders ranked by share, registered owners, holdings and the full parent and subsidiary structure.

People and roles

Board members, managers and owners with current and past roles, plus the shortest link between two people.

“Which companies does Holding ABC ApS own shares in?”
It finds the shareholder and lists its holdings ranked by share percentage.
“Find plumbing companies in Proff's directory with phone number and website.”
It searches the business directory by industry and returns listings with phone, web and address.
“How are Anna Berg and Peter Holm connected in business?”
It finds the shortest connection between the two people through companies where they hold roles.

28 tools for Proff

These tools are switched on when you connect. You can switch any of them off, or require your approval before it runs.

find_person_connectionFind the shortest business connection between two persons (from and to person IDs) via companies they share roles in.
get_addressGet one address by country. API summary: The geographical location tree (country, region/county, municipality) used to filter directory searches by location.
get_all_official_company_typesGet one company by country. API summary: Get all official company types.
get_businesscategoryGet one businesscategory by country. API summary: List of register business category entities.
get_companyGet the full register profile of one company by country and company_id: address, industry, key figures and financial statements (revenue, profit, equity), board and management roles.
get_company_3Get one company by country. API summary: Changed companies and business units.
get_company_6Get one company by country. Results are paginated. API summary: List industries for a country, optionally filtered by exact name or by category type (defaults to the main category tree).
get_company_7Get one company by country. API summary: Get a list of suggested industry names based on the given suggestion term.
get_company_8Get one company by company id. API summary: Lookup a single EniroPro industry by its industry code.
get_company_directory_entryGet one business directory listing by country and company_id (from search_company_directory), with contact details and industry.
get_company_group_structureGet the corporate group structure (parent and subsidiary companies) for a company by country and register_id.
get_company_roleGet one role for a company by role id. API summary: Look up the shareholder entity for a person by their role ID (the id used to identify a person elsewhere in the API, e.g. in company roles).
get_corporate_structureGet one corporate structure by country. Results are paginated. API summary: Corporate structure search by company name.
get_liquidationestablishmentGet one liquidationestablishment by country. API summary: Return all establishments and liquidations for the past two years.
get_personGet one business person by country and company_id (the person's ID from search_persons), including all their current and past company roles.
list_company_factsList facts for a company. API summary: Get aggregated facts for an industry with the specified id: number of companies in it, and (where available) financial summary figures plus….
list_company_historical_rolesList past board members, managers and other role holders of a company by country and register_id.
list_company_ownersList the registered owners of a company by country and register_id (the company ID from search_companies).
list_company_shareholdersList the shareholders of a company, ranked by share percentage, by country and company_id. Set direct to only include direct owners.
list_shareholdingsList the companies a person or company holds shares in, ranked by share percentage. Pass the shareholder's ownership_id and country.
list_tokeninformationsList tokeninformations. API summary: Returns information about the token including call limits and recorded calls.
search_companiesSearch the official company register in a country (country: dk, no, se, fi) by name or CVR in query, with optional filters for industry, location, revenue, profit, employees and founding date. Use this first to find a company's register ID.
search_company_directorySearch Proff's business directory in a country by name, industry or industry_code. Returns listings with phone, web and address, useful for finding contact details.
search_company_networkcandidatesSearch networkcandidates for a company by query. Use this to find existing networkcandidates before creating a new networkcandidate. API summary: Get network resource links for this specific business person resource, against other business persons matching query.
search_personsSearch business persons (board members, managers, owners) in a country by name in query, optionally narrowed by birth_date. Returns person IDs and their company roles.
search_shareholdersSearch shareholders (persons or companies) by name in a country. Use it to find the ownership_id for list_shareholdings.
suggest_companiesQuick autocomplete for company names: give a partial name in query and a country to get matching companies and their IDs.
suggest_personsQuick autocomplete for business person names: give a partial name in query and a country.

Set up in three steps

1
Pick the app
Create a free HeyMyApps account and choose Proff from the app list.
2
Paste your key
Paste your Proff API token. Proff issues API keys after you sign an API agreement with them, which you start through Proff sales via apidocs.proff.no.
3
Add the link to your AI
You get a personal MCP link. Add it to Claude, ChatGPT or Cursor:
1. Click your name, then Settings › Connectors › Add custom connector.
2. Paste your link as the Remote MCP server URL.
3. Switch it on from the + menu in a chat.

Questions

What can the AI do in Proff?

The AI can search company registers in Denmark, Norway, Sweden and Finland and read company profiles with key figures and financial statements. It can look up shareholders, owners, holdings, group structure, board members and managers, past role holders and directory listings. It only reads data and cannot change anything in Proff.

Where do I get a Proff API token?

Proff issues API tokens after you sign an API agreement with them. Contact Proff sales through apidocs.proff.no. Once you have the token, paste it into HeyMyApps and your MCP link is ready in about a minute.

Does the AI see my Proff API key?

No. Your API token is encrypted at rest and never shown to the AI. Once saved, it is not shown again, not even to you. The AI only works through the tools you switch on.

Can I control what the AI is allowed to do?

Yes. You choose which tools are switched on. All Proff tools only read data, so the AI cannot change anything in Proff. Every tool call is logged, so you can see which lookups the AI made.

Does it work with ChatGPT?

Yes. In ChatGPT, go to Settings › Apps & Connectors › Advanced, turn on Developer mode and add your HeyMyApps link. Developer mode needs a paid ChatGPT plan: Plus, Pro, Business or Enterprise. The same link works in Claude under Settings › Connectors › Add custom connector, and in Cursor.

What does it cost?

HeyMyApps has a free plan, and you do not need a credit card to start. Paid plans bill per completed task, so you pay for work the AI actually finishes.