Czech ISIR Insolvency Register Search (Insolvenční rejstřík)

Search the official Czech insolvency register - ISIR (Insolvenční rejstřík), run by the Czech Ministry of Justice - by company name, surname, IČO or city and get clean, structured JSON: debtor name, IČO, case reference (spisová značka), court, proceeding status, a link to the ISIR proceeding detail, and a cross-link to the Czech commercial register (or.justice.cz). No API key.

An insolvency entry is the strongest negative signal in Czech B2B: it means a company or individual is in bankruptcy or restructuring. Screening a counterparty against ISIR is essential for credit risk, KYB / KYC, supplier and customer onboarding, and debtor monitoring.

Why this actor

ISIR has no clean bulk API - the official search is an HTML form, and the third-party "APIs" charge a subscription. This actor drives the official public search directly and parses each debtor into tidy JSON, including the commercial-register cross-link that ties an insolvency straight back to the company's registration.

No key, no setup

Reads the official public search directly. No API key, no subscription, no proxy required. Just send a name or IČO. (If you run at high volume and the register rate-limits, you can optionally enable an Apify residential CZ proxy.)

Pairs with our company & UBO actors (the source→screen flow)

This actor is the debtor / insolvency check half of a KYB workflow. Chain it with an identity / UBO source:

• Slovakia RPVS Beneficial Owners / Poland CRBR Beneficial Owners - source the owners and companies.
• This actor - screen those Czech companies and people against the insolvency register.

The same pattern powers the whole suite: Poland KRZ and Germany Insolvency are the Polish and German equivalents of this debtor screen. Source the party, then check the party.

Quick Start

Look up a company or person by name (matches the ISIR debtor index):

{
  "name": "Bau"
}

Look up specific companies by IČO:

{
  "ico": ["41035623", "26381796"]
}

Monitor a watchlist (ideal on a daily schedule - new Czech insolvencies for your counterparties):

{
  "watchlist": ["ZUPO - SPORTBAU CS", "INVEST-INTERBAU"],
  "includeEnded": false
}

Input

Field	Type	Description
name	string	Company name or surname to look up.
watchlist	array	A list of names to check in one run - the monitoring use case. Overrides name.
ico	array	One or more Czech IČO registration numbers.
firstName	string	Optional first name to narrow an individual-debtor search.
city	string	Optional city (obec) to narrow the search.
includeEnded	boolean	Include closed/ended proceedings as well as active. Default true.
maxResults	integer	Max debtor records to export across all queries (register returns up to 400 per query). Default 100.
proxyConfiguration	object	Optional Apify proxy (off by default). Enable residential CZ if you hit rate limits at volume.

Output

One dataset item per matching debtor:

{
  "debtorName": "ZUPO - SPORTBAU CS, spol. s r.o.",
  "debtorType": "company",
  "ico": "41035623",
  "caseNumber": "KSOS 39 INS 1072 / 2009",
  "court": "Krajského soudu v Ostravě",
  "proceedingStatus": "ended",
  "detailId": "bc62ca53-63bb-436e-baeb-231bb41f5d1e",
  "detailUrl": "https://isir.justice.cz/isir/ueu/evidence_upadcu_detail.do?id=bc62ca53-63bb-436e-baeb-231bb41f5d1e",
  "commercialRegisterUrl": "https://or.justice.cz/ias/ui/rejstrik-$firma?ico=41035623&jenPlatne=PLATNE",
  "matchedQuery": "Bau",
  "jurisdiction": "CZ",
  "source": "ISIR - Insolvenční rejstřík (Ministerstvo spravedlnosti ČR)",
  "sourceUrl": "https://isir.justice.cz/isir/ueu/vysledek_lustrace.do",
  "retrievedAt": "2026-07-02T00:00:00.000Z"
}

proceedingStatus is active or ended. commercialRegisterUrl links companies straight to the Czech commercial register (or.justice.cz) by IČO.

Common use cases

• Credit risk & onboarding - before extending terms, check whether a customer or supplier is in insolvency.
• KYB / KYC - screen a counterparty (or the owners/UBOs surfaced by our registry actors) against the Czech insolvency register.
• Debtor & portfolio monitoring - run a watchlist on a schedule and get alerted to new insolvencies.
• Legal & collections - find the court, case reference and detail link for a proceeding.

Data source & compliance

• Source: the official ISIR - Insolvenční rejstřík (isir.justice.cz), operated by the Czech Ministry of Justice. Every record is stamped with its source URL and retrieval timestamp.
• Public records. ISIR is a public register open to anyone; this actor reads the open public search and logs in to nothing.
• Query-driven - it looks up the names / IČOs you ask for, not a bulk copy of the register.
• The Czech birth number (rodné číslo) is deliberately not extracted. Use the data lawfully (KYB, credit risk, due diligence, B2B) and gently.

Notes

• The register returns up to 400 matches per query and reports the total; a broad name may exceed that - refine it (add a city / IČO) or raise maxResults.
• Under heavy use the register may rate-limit with a CAPTCHA; the actor detects this and reports it clearly (re-run, lower volume, or enable a residential CZ proxy) rather than failing silently.