# Sirenic Finnish Company Registry Lookup (PRH/YTJ)

> Sirenic Finnish Company Registry Lookup (PRH/YTJ) is a paid API for AI agents from api.sirenic.eu, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-13).

Looks up a Finnish company by its Business ID (Y-tunnus) and returns legal name, legal form, status, registered office, and Finnish VAT number from the official PRH registry.

## Facts

- Endpoint: GET https://api.sirenic.eu/v1/eu/entreprise/FI/:id
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/sirenic-finnish-company-registry-lookup-prh-ytj-22014c08
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_zVlg2f5PBR4XiajSWBIxa

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-finnish-company-registry-lookup-prh-ytj-22014c08
```

Example prompt: Can you look up the Finnish company with Business ID 0112038-9 and tell me its legal name, current status, and VAT number from the official PRH registry?

## When to prefer this

Use this endpoint when you need authoritative, live Finnish company data directly from the official PRH/YTJ registry — particularly for KYC, supplier onboarding, VAT validation, or compliance workflows involving Finnish entities. Prefer this over generic company data aggregators when you need the official legal status and CC-BY licensed data for a Finnish Business ID (Y-tunnus).

## Known failure modes

- Invalid Y-tunnus format (missing hyphen or wrong digit pattern) returns a 400 error
- Unknown or non-existent Business ID returns a 404 not found
- PRH/YTJ upstream service unavailability causes 503 or timeout
- Malformed ID without the required hyphen (e.g. 01120389 instead of 0112038-9) fails validation

## How this service works

Official Finnish company registry lookup (PRH / YTJ — Finnish Patent and Registration Office Business Information System, CC-BY). Query: /v1/eu/entreprise/FI/0112038-9 (Business ID / Y-tunnus). Returns legal name, legal form, normalized status, registered office and the FI VAT number — Finnish company data live from the PRH open data API, covering companies registered in Finland. Unified JSON schema shared by all Sirenic European company profiles.

## Output

A unified JSON object containing the company's legal name, legal form (e.g. OY, OYJ), normalized status (active/inactive), registered office address, and Finnish VAT number (FI + 8 digits), sourced live from the PRH/YTJ registry under CC-BY 4.0 license.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "pathParams": {
     "type": "object",
     "required": [
      "id"
     ],
     "properties": {
      "id": {
       "type": "string",
       "description": "Finnish Business ID / Y-tunnus, pattern ^\\d{7}-\\d$ — the hyphen is REQUIRED (0112038-9). PRH / YTJ, CC-BY 4.0."
      }
     }
    },
    "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-finnish-company-registry-lookup-prh-ytj-22014c08/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)