Belgian address and company API for developers

Try it live

Search any Belgian address or company below. No account needed.

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Live demo: results are fetched directly from the API.

A complete, developer-first API

Address Autocomplete

Instant full-text search across millions of Belgian addresses. Street, house number, municipality and postcode.

Company Search

Search Belgian companies by name. Returns enterprise numbers, NACE codes, and VAT status.

Route Calculation

Point-to-point routing for any two coordinates in Belgium. Returns distance in km and travel duration.

Bidirectional Lookup

Search an address, get the companies registered there. Search a company, get its address. Both directions in one call.

Nearest address

Reverse geocoding: return the closest Belgian address for any GPS coordinate, with exact distance in metres.

Address normalisation

Convert a free-text address into the canonical BOSA structure. Perfect for cleaning up forms and legacy databases.

Address validation

Check whether an address exists with a confidence score, or validate each field independently and get canonical values back.

Batch calls

Bundle up to 100 items into a single call to normalize, validate or geocode in bulk, one address credit per item.

Integrate in minutes

A single HTTP call is all it takes. Add your API key to the header and start querying millions of Belgian addresses and companies instantly.

API key or Bearer JWT authentication
Mixed address + company results in one call
Filter by result type: address or company
Rate-limit headers on every response

cURL

curl "https://addrly.be/api/v1/autocomplete/?q=rue+de+la+loi&limit=5"   -H "X-API-Key: YOUR_API_KEY"

{
  "results": [
    {
      "result_type": "address",
      "label": "Rue de la Loi 16, 1000 Bruxelles",
      "lat": 50.8467,
      "lon": 4.3499
    }
  ],
  "count": 1
}

Everything to get started

API documentation

Every endpoint, its parameters, its price in credits and its error codes.

Python SDK

The addrly-api package: typed responses, meters on every call, bulk helpers and a spending cap.

Postman and Bruno collections

Every public endpoint with ready-made tests, to run in the app, on the command line or in CI.

For AI assistants

An llms.txt file that describes the API to your coding assistant.

Frequently asked questions

How is usage counted?

Address calls use address credits and company calls use company credits. Every response carries the remaining allowance in its headers, and a free status call returns both meters.

Can I call the API from the browser?

We recommend server-side calls only, to keep your key secret. For autocomplete in a form, proxy the requests through your own backend.

Is there a free tier?

Yes. The free plan includes 1,000 address requests and 20 company dossiers every month, without a card.

Try it on your own customers

The free plan gives you 20 complete company dossiers every month, no card required. Move to a paid plan when you need more, and cancel whenever you like.

A question first? Contact us

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Belgian address and company API for your product