Nummo in your AI assistant
Ask Claude or ChatGPT. The answer comes from the actual annual accounts.
Connect Nummo to your AI assistant and ask about any Belgian company. Your assistant fetches the figures, the directors and the publications straight from Nummo, with a link to the profile in every answer.
Example
How did Lotus Bakeries do last year?
According to the 2025 annual accounts, fetched from Nummo:
- Profit for the financial year
- €87.3m
- Equity
- €198.2m
Source: 2025 annual accounts, via Nummo
- 2 min
- to connect
- 10 years
- of figures per company
- nl · fr · en
- ask in your own language
- In Pro
- included
Connect
How to connect Nummo
Which plan? Also works with a free Claude account (one custom connector). In Team and Enterprise, an admin has to allow it.
- 01Open the connectors
In Claude, go to Settings › Connectors.
- 02Add a custom connector
Choose Add custom connector. Name it Nummo and paste this URL:
https://www.nummo.be/mcp - 03Sign in and allow
Click Connect. You land on Nummo: sign in to Nummo as usual and choose Allow.
- 04Ask your question
Turn on Nummo in a chat and ask about a Belgian company. Claude fetches the data from Nummo when needed.
Which plan? Required: ChatGPT Pro, Business, Enterprise or Edu, via chatgpt.com. In Business, an admin has to turn on developer mode. It does not work with Free and Plus.
- 01Turn on developer mode
On chatgpt.com, go to Settings › Apps & Connectors and turn on developer mode. It is usually under the advanced settings.
- 02Create a new app or connector
Choose to create a new app or connector. Name it Nummo, choose OAuth as authentication and paste this URL:
https://www.nummo.be/mcp - 03Sign in and allow
You land on Nummo: sign in to Nummo as usual and choose Allow.
- 04Ask your question
Choose the Nummo app in a chat and ask about a Belgian company.
The menus of Claude and ChatGPT sometimes change name. Then look for Connectors or Apps in the settings.
In action
See it in action
Three real answers from Claude with Nummo connected, shortened. Click to play.
Examples
What you can ask
Ask in your own words. You can copy these questions and use them right away.
- Reading the figures
Revenue, profit, equity and what they mean, up to 10 years back.
- “How has Studio 100 NV done over the last five years?”
- “Explain the balance sheet of Lotus Bakeries in plain language.”
- “How has Colruyt Group's profit evolved?”
You get: a table per year, with an explanation of what stands out.
- Compare
Two or more companies side by side, in tables and charts.
- “Compare Lotus Bakeries and Vandemoortele over the last three years, with a chart.”
- “How does Brouwerij Huyghe compare with other breweries?”
- “Put the solvency of these three suppliers side by side.”
You get: a comparison table and chart, with the source for each company.
- Check before you sign
Does the company still exist, who signs, has anything changed?
- “Is 0401.030.860 still active and who is on the board?”
- “What was published about Plopsa in the Belgian Gazette this year?”
- “Does this customer have negative equity?”
You get: the status, the board and the publications, with date and link.
- Bankruptcies
What is happening in your municipality, province or sector.
- “Which hospitality businesses in East Flanders went bankrupt in the past month?”
- “How many construction companies went bankrupt in Limburg this year?”
- “Give me this week's bankruptcies in Brussels.”
You get: a list with name, date and municipality, with a link to each profile.
- E-invoices
Can your customer receive e-invoices via Peppol?
- “Can I send an e-invoice to Colruyt?”
- “Which of these five customers are not on Peppol yet?”
You get: yes or no per company, with the enterprise number.
- Say "via Nummo" if you want to be sure your assistant uses our data.
- Several companies with the same name? Give the enterprise number.
- Ask for a table or chart: your assistant builds them from the figures.
- Every answer includes a link to the profile. Click through for all details.
What it does not do: search for people, give advice on loans or investments, or change data. It only reads what is public about companies.
Security
Safe and under control
- Read only
Your assistant can look up data, but cannot change or send anything.
- At most 500 calls per day
A fixed limit per account, reset every day.
- Your chat stays yours
Your assistant only sees what you ask. We see which tools it calls, not your chat.
- Revoke with one click
In your profile, under Connected AI assistants, you stop the connection whenever you like.
Questions
Frequently asked questions
Who can use it?
Anyone with Nummo Pro: also during your trial, with Nummo Onderwijs and with the API plan. Without Pro, your assistant gets a message with a link to the pricing page.
How many questions can I ask?
Up to 500 calls per day. One question to your assistant can lead to a few calls to Nummo, for example a search and then fetching the figures.
What data does my assistant get?
What you also see on Nummo: identity, activity and registered office, figures and ratios from up to 10 annual accounts, the position in the sector, directors, publications in the Belgian Gazette, the Peppol status and recent bankruptcies. Every answer links to the profile and states the source and the date.
What does Nummo see of my conversation?
Nothing. We see which tools your assistant calls and how often, not your questions or your conversation. Sole proprietorships and shielded businesses follow the same rules as on the site.
How do I stop the connection?
In your profile, under Connected AI assistants, you revoke access with one click. You can also remove the connector in your assistant itself.
Claude is a trademark of Anthropic. ChatGPT is a trademark of OpenAI. Nummo is an independent service.