How many publications does a company have?

machine.total_found reports the register's count (112 for B82454 in the sample).

Where do I get the company profile?

Luxembourg company, with the same RCS number.

Do I pay for lookups that come back empty?

No. You are charged per result, so a request that finds nothing costs nothing. Testing this against a messy list is free to get wrong.

What does a lookup cost?

1 point per returned record, which is $1 per 1,000, and only records that come back are charged. Points come out of your monthly plan allowance, so there is no separate per-country contract.

Corporate registry

Luxembourg Company Publications (RESA) API and MCP — Annual Accounts and Notices

Send an RCS number and get the company's RESA publications as a list, newest first: publication number, date, type, description, details and how the publication is consulted. Set max_items to take only the latest.

Run it in the app Read the API docs

You send: a Luxembourg RCS number
You get back: the RESA publications of the company, newest first: publication number, date, type, details and consult mode
Coverage: Luxembourg — entities on LBR / RCS.
Price: 1 point per returned record — $1 per 1,000; Billed per record actually returned, capped by max_items. A request that returns nothing costs nothing.

Comparison

Ways to get this data

Three approaches teams use today, and where each one runs into trouble.

Approach	What it takes	Cost	Trade-off
LBR / RCS directly	Open the company on LBR / RCS and page through the list	Usually free, sometimes per-document	A different interface, language and data shape for every country you add
Collecting it yourself	Build and host a crawler per register, then keep each one alive	Infrastructure and maintenance	Registers change their pages without warning, and nobody is on the hook when yours breaks
NeuralVerge	One request, the same shape as every other source in the catalog	$1 per 1,000, misses not billed	Covers Luxembourg — other countries are separate sources with the same request format

Response

What you get back

Every field in the example response below.

Field	Type	Description
`session_id`	string	Id of this run, for tracing.
`kind`	string	Source type of the response.
`company`	string	The identifier you sent.
`company_id`	string	The identifier as the register uses it.
`max_items`	number	The cap you set on returned records.
`start_page`	number	Results page the listing started from.
`partial`	boolean	Whether the result set is incomplete.
`human`	string	Readable summary with the number of results.
`total_points`	number	Points charged: one per returned record.
`machine.total_items`	number	Records returned in this batch.
`machine.first_item`	object	The first returned record, same shape as one entry of items.
`machine.items[]`	array	The returned records.
`machine.total_found`	number	Matches the register reports for the search; null when it does not report one.
`machine.page_count`	number	Result pages read.
`machine.blocked`	boolean	Whether the register refused the request.
`machine.proxy_traffic_bytes`	number	Size of the data transferred for the run, in bytes.
`machine.items[].registration_number`	string	Empty string in the sample; the company is identified by the company field.
`machine.items[].status`	null	Null for publications.
`machine.items[].address`	null	Null for publications.
`machine.items[].company_type`	null	Null for publications.
`machine.items[].incorporation_date`	null	Null for publications.
`machine.items[].id`	string	Publication id.
`machine.items[].publication_number`	string	RESA publication number.
`machine.items[].date`	string	Publication date (YYYY-MM-DD).
`machine.items[].type`	string	Publication type, e.g. Annual accounts.
`machine.items[].name`	string	Same as type.
`machine.items[].description`	string	Publication description.
`machine.items[].details[]`	array	Detail lines, e.g. the accounting exercise; empty when there are none.
`machine.items[].consult`	string	How the publication is consulted, e.g. By mention.
`machine.items[].url`	string	Link to the entry on the register.

Response

Example response

A real response, as returned.

{
  "session_id": "11111111-1111-1111-1111-111111111111",
  "kind": "lu_company_filings",
  "company": "B82454",
  "company_id": "B82454",
  "max_items": 2,
  "start_page": 1,
  "partial": false,
  "human": "# Luxembourg — LBR / RCS — company publications\n\n- **Company:** B82454\n- **Results:** 2 of 112 found\n- **Proxy traffic:** 253.4 KB",
  "machine": {
    "total_items": 2,
    "first_item": {
      "registration_number": "",
      "status": null,
      "address": null,
      "company_type": null,
      "incorporation_date": null,
      "id": "RESA_2026_145.585",
      "publication_number": "RESA_2026_145.585",
      "date": "2026-07-06",
      "type": "Annual accounts",
      "name": "Annual accounts",
      "description": "Annual accounts — Exercise from 01/01/2025 to 31/12/2025",
      "details": [
        "Exercise from 01/01/2025 to 31/12/2025"
      ],
      "consult": "By mention",
      "url": "https://www.lbr.lu/mjrcs-web-front/consult-company/B82454?tab=publications#RESA_2026_145.585"
    },
    "items": [
      {
        "registration_number": "",
        "status": null,
        "address": null,
        "company_type": null,
        "incorporation_date": null,
        "id": "RESA_2026_145.585",
        "publication_number": "RESA_2026_145.585",
        "date": "2026-07-06",
        "type": "Annual accounts",
        "name": "Annual accounts",
        "description": "Annual accounts — Exercise from 01/01/2025 to 31/12/2025",
        "details": [
          "Exercise from 01/01/2025 to 31/12/2025"
        ],
        "consult": "By mention",
        "url": "https://www.lbr.lu/mjrcs-web-front/consult-company/B82454?tab=publications#RESA_2026_145.585"
      },
      {
        "registration_number": "",
        "status": null,
        "address": null,
        "company_type": null,
        "incorporation_date": null,
        "id": "RESA_2026_141.1347",
        "publication_number": "RESA_2026_141.1347",
        "date": "2026-07-01",
        "type": "Report or consolidated report on payments to governments",
        "name": "Report or consolidated report on payments to governments",
        "description": "Report or consolidated report on payments to governments",
        "details": [],
        "consult": "By mention",
        "url": "https://www.lbr.lu/mjrcs-web-front/consult-company/B82454?tab=publications#RESA_2026_141.1347"
      }
    ],
    "total_found": 112,
    "page_count": 1,
    "blocked": false,
    "proxy_traffic_bytes": 259470
  },
  "total_points": 2
}

Integration

How to run it

The same lookup works from the app, the API, or as a tool an agent can call mid-task.

Results come back in the same envelope as every other source: a session id, a readable summary, the structured result and the points charged.

curl -X POST https://api.neuralverge.ai/functions/v1/run-lu-company-filings \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"company":"B82454","max_items":2}'

Use cases

What teams use it for

Where this field shows up in an actual workflow.

Track annual accounts

See when accounts were published and for which exercise.

Monitor corporate events

Watch for new publications on a Luxembourg entity.

Due-diligence timeline

Build a dated list of what a company has published.

Compliance checks

Check that expected publications appear on schedule.

Coverage & limits

Coverage, freshness and limits

What this source covers, how fresh it is, and where it stops.

Coverage

Luxembourg — entities on LBR / RCS.

Freshness

Read at request time, so the answer reflects the register as it stands when you ask.

Handling

LBR / RCS is a public register. Every response carries the source URL it was read from and a session id you can trace.

What it will not do

—You get publication entries and details, not the parsed contents of each document.
—The 'consult' value says how a publication is accessed; some are by mention only.
—Several fields inherited from the company shape (status, address) are null for publications.

FAQ

Questions, answered

Yes.

Related sources

Luxembourg company

Company record by RCS number.

Luxembourg company search

Find an RCS number by name.

All corporate registries

Company registers across Europe, the Americas and Asia-Pacific, plus global LEI lookup.

Try luxembourg company filings on your own data

One request format across every source in the catalog.

Get started