# Sirenic Polish KRS Company Registry Lookup

> Sirenic Polish KRS Company Registry Lookup is a paid API for AI agents from api.sirenic.eu, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-11).

Look up a Polish company by KRS number against the official Krajowy Rejestr Sądowy (Ministry of Justice) registry, returning legal name, form, status, incorporation date, and registered office.

## Facts

- Endpoint: GET https://api.sirenic.eu/v1/eu/entreprise/PL/:id?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-11
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/sirenic-polish-krs-company-registry-lookup-633d66ae
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_fdZZfBrKBlx3Bcr20GJ7a

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability sirenic-polish-krs-company-registry-lookup-633d66ae
```

Example prompt: Can you look up the Polish company with KRS number 0000006865 from the official KRS registry and tell me its legal name, current status, legal form, incorporation date, and registered office address?

## When to prefer this

Use this endpoint when you specifically need official Polish company registry data keyed by KRS number. It returns live, authoritative data directly from the Polish Ministry of Justice. Prefer it over generic business data aggregators when legal accuracy and official source provenance matter — e.g. for KYB/KYC, supplier verification, legal due diligence, or e-invoicing compliance in Poland. Not suitable for lookups by company name, NIP, or REGON — those require different endpoints.

## Known failure modes

- KRS number not found — company does not exist in the registry (404)
- Invalid KRS number format — must be exactly 10 digits including leading zeros (400)
- KRS registry temporarily unavailable — upstream source outage
- Passing NIP or REGON instead of KRS number — different identifier types not accepted
- Omitting leading zeros from the KRS number causing a lookup failure

## How this service works

Official Polish company registry lookup (KRS, Krajowy Rejestr Sądowy, the National Court Register of Poland). Query: /v1/eu/entreprise/PL/0000006865 (10-digit KRS number). Returns legal name, legal form, normalized status, incorporation date and registered office, live from KRS (officers anonymized at the source). A foreign entrepreneur or its branch, a professional partnership or a form off the list: 404, not billed.

## Output

A unified JSON object containing the company's official legal name, legal form (e.g. spółka z o.o.), normalized status (active/inactive), incorporation date, and registered office address — sourced live from the Polish KRS Ministry of Justice registry. Officer details are anonymized at source.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "pathParams": {
     "type": "object",
     "required": [
      "id"
     ],
     "properties": {
      "id": {
       "type": "string",
       "description": "Polish KRS number, exactly 10 digits INCLUDING leading zeros (0000006865). Not the NIP, not the REGON. Krajowy Rejestr Sądowy, Ministry of Justice."
      }
     }
    },
    "queryParams": {
     "type": "object",
     "properties": {}
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/sirenic-polish-krs-company-registry-lookup-633d66ae/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.sirenic.eu](https://www.zero.xyz/host/api.sirenic.eu/llms.txt)