Getting it into your agent
It runs from inside its repository, so the clone comes first — what it calls does not travel with the file alone.
git clone --depth 1 https://github.com/sophymarine/openregistrynpx agentmods add skills/sophymarine/openregistry/finland-prhWrote 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.
[](https://agentmods.dev/skills/sophymarine/openregistry/finland-prh)<a href="https://agentmods.dev/skills/sophymarine/openregistry/finland-prh"><img src="https://agentmods.dev/badge/skills/sophymarine/openregistry/finland-prh/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.
<a href="https://agentmods.dev/skills/sophymarine/openregistry/finland-prh"><img src="https://agentmods.dev/badge/skills/sophymarine/openregistry/finland-prh.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00000 | $0.00943 |
| Opus 5 | $0.00000 | $0.00472 |
| Sonnet 5 | $0.00000 | $0.00189 |
| Haiku 4.5 | $0.00000 | $0.00094 |
Grade A, and why
Finland — PRH (YTJ) Lookup scanned grade A with 0 findings 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 11d 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.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 73 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Finland — PRH (YTJ) Lookup
Live, direct-to-government access to Patentti- ja rekisterihallitus (PRH) — avoindata YTJ API.
Single-country variant of the cross-border Cross-Border UBO Chain Walker. Use this skill when the user is explicitly focused on Finland.
What you get
- Direct query to PRH (YTJ). Every tool call hits Patentti- ja rekisterihallitus (PRH) — avoindata YTJ API at the moment you ask. No nightly scrape, no aggregator middle layer.
- Unmodified responses. Field names, status codes, and (where available) raw filing bytes are returned exactly as the registry's own system emits them.
- Native ID format support. Finnish Y-tunnus (8-digit, hyphenated:
0112038-9Nokia Oyj). - Sample entity: Nokia Oyj.
Available tools (jurisdiction = FI)
search_companies, get_company_profile, list_filings, get_financials, get_officers, get_shareholders, get_document_metadata, fetch_document
For every tool, pass jurisdiction: "FI" (case-insensitive).
Example prompts
Pull Nokia Oyj's latest annual report from PRH and parse the iXBRL
List directors of Kone Oyj
Search for all Finnish Oy with 'sauna' in the name
Workflow
Step 1 — Resolve the entity
search_companies({ jurisdiction: "FI", query: "<name or ID>" })
get_company_profile({ jurisdiction: "FI", company_id: "<id>" })
Step 2 — Pull the relevant register slice
Pick from the available tools list above. For UBO walks across borders, return to the Cross-Border UBO Chain Walker.
Quirks specific to Finland
- Finland's PRH UBO register (Tosiasiallinen edunsaaja) is publicly queryable. Full UBO support on the roadmap.
Oy= private limited;Oyj= public limited. Branches show as separate Y-tunnukset.- Filings include annual reports (tilinpäätös) in iXBRL —
fetch_documentreturns raw bytes. - Company language can be FI / SV / EN — name fields may include all three.
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.
- 11d ago First seen · 73 lines · 0 tokens per session scan A c28615c3181e
Finland — PRH (YTJ) Lookup is a skill published in the GitHub repository sophymarine/openregistry (17 stars, last pushed 4d ago), licensed Apache-2.0. It costs nothing until one of its globs matches a file; then it loads 943 tokens. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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