finland-company-registry

finland-company-registry is a skill for Claude Code from Nolpak14/getregdata. It costs 256 tokens per session (5,593 once invoked), scanned A, original, MIT.

A lookup tool for verifying Finnish companies through PRH's official open register. PRH is Finland's Patent and Registration Office, and a Y-tunnus is a Finnish business identification number.

In plain words
What is it for?
Finding a company's Y-tunnus, legal form, business line, registered addresses, previous names, registered entries, and trade-register status.
Why use it?
It provides company information directly from a public government source without an API key or registration. This helps verify whether a company exists, is active, and matches its stated business.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the regdata-company-lookup plugin — 28 skills shipped together

Good fit Finding a company's Y-tunnus, legal form, business line, registered addresses, previous names, registered entries, and trade-register status.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/nolpak14/getregdata/finland-company-registry
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add Nolpak14/getregdata --skill finland-company-registry
Clone the repo
git clone --depth 1 https://github.com/Nolpak14/getregdata

Made for: Claude Code.

Or install regdata-company-lookup, the plugin that ships this one along with the rest of its 28 skills.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for finland-company-registry

README.md
[![agentmods](https://agentmods.dev/badge/skills/nolpak14/getregdata/finland-company-registry/github.svg)](https://agentmods.dev/skills/nolpak14/getregdata/finland-company-registry)
Your own site
<a href="https://agentmods.dev/skills/nolpak14/getregdata/finland-company-registry"><img src="https://agentmods.dev/badge/skills/nolpak14/getregdata/finland-company-registry/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for finland-company-registry

Your own site · 80×15
<a href="https://agentmods.dev/skills/nolpak14/getregdata/finland-company-registry"><img src="https://agentmods.dev/badge/skills/nolpak14/getregdata/finland-company-registry.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 256 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 5,593 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00256 $0.05593
Opus 5 $0.00128 $0.02797
Sonnet 5 $0.00051 $0.01119
Haiku 4.5 $0.00026 $0.00559

Measured 12d ago against content hash 3d0c0144316b, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

finland-company-registry scanned grade A with 1 finding against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 12d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

**curl pattern** (no auth header needed on any endpoint):
skills/finland-company-registry/SKILL.md · 326 lines

How it starts

The opening of the file, as written. The whole thing — 326 lines — stays where its author put it; the contents beside it link to each section on GitHub.

finland-company-registry

Free, official Finnish company data from the PRH (Patentti- ja rekisterihallitus) Avoindata YTJ open data API. This skill needs no paid actor, no Apify token, and no API key at all - the endpoints are wide open. Use it as the front door for Finnish entity verification, and route to the paid regdata actors when you need a jurisdiction that has no free API.

Persona

You are a KYB / due-diligence analyst verifying Finnish companies against the official register. You resolve a company to its Y-tunnus (business ID), confirm it is registered and active, read its company form and business line, and check its registered entries and name history for signals - all from the authoritative source, PRH, not a commercial aggregator.

What this gives you (for free)

  • Company profile - businessId (Y-tunnus, with registrationDate and source), euId, names[] (incl. historical), companyForms[] (OY / OYJ / KY / ...), registrationDate, lastModified, status and tradeRegisterStatus.
  • Business line - mainBusinessLine with type code, descriptions, and typeCodeSet (TOL 2008 / NACE), so you can confirm the entity does the business the counterparty claims.
  • Addresses - addresses[] with type, street, buildingNumber, postCode, postOffices, and country - visiting and postal addresses as versioned entries.
  • Registered entries - registeredEntries[] listing the register, authority, type and dates - which registers the entity sits in (trade register, prepayment register, VAT, employer).
  • Name history - names[] carries current and past names as versioned objects with type, registrationDate, endDate and version.
  • companySituations[] - the adverse-event flag, and the most important field for due diligence. An empty array is the clean case. A non-empty entry carries a type code plus registrationDate, e.g. {"type":"SELTILA","registrationDate":"2026-04-20"} = the company is in liquidation (selvitystila). Verified live: 2 of 100 on one page of Helsinki OY results. Never report a Finnish company as clean without reading this array - status alone will not tell you.
  • website - {url, registrationDate, source} when the company has registered one. This is the ONLY contact-shaped field in the whole dataset; there is no email and no phone number anywhere (see the limits section).

Read the full file on GitHub · 326 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 12d ago First seen · 326 lines · 256 tokens per session scan A 3d0c0144316b

Subscribe to this mod's changes

finland-company-registry is a skill published in the GitHub repository Nolpak14/getregdata (6 stars, last pushed 1mo ago), licensed MIT. It adds 256 tokens to every session and 5,593 once invoked, about $0.0013 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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