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MCP live MCP 2025-06-18 http

skanfirmy

firma/skanfirmy

Verify Polish companies by NIP, KRS or REGON and validate EU VAT numbers via VIES, straight from official government registers (Ministry of Finance VAT white list, KRS, Statistics Poland / GUS). Also checks bank accounts against the white list, generates the tax micro-account, searches PKD activity codes and computes statutory interest. Hosted, keyless, no signup. 14 tools.

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Watch this dependency Share evidence report
Uptime
100.0%
5 direct probes · 30d
Response
836ms
last probe
Tools
14
callable
Resources
0
readable
Prompts
0
available
Primary URL
https://skanfirmy.pl/mcp
Score: 100/100
Handshake verified by our own probe.
pass Answers the MCP handshake 50/50
The handshake and the list calls succeeded on the primary URL.
pass Lists tools, resources or prompts 30/30
14 tools, 0 resources, 0 prompts returned.
pass 3 or more catalogue items 10/10
14 items in total; 3 or more earns these points.
pass Describes itself 10/10
376 characters; more than 30 earns these points.

Tools · 14

sprawdz_nip

Check VAT status (VAT White List / Biała Lista) and KRS data for a Polish company by NIP. For entities without a KRS number (sole proprietors and civil partnerships, i.e. natural persons) personal dat…

sprawdz_lista_nip

Bulk-check up to 30 NIPs in one call to the Ministry of Finance VAT White List: VAT status, bank accounts, REGON, KRS number and address of each entity. For entities without a KRS number (natural pers…

sprawdz_regon

Look up entity data in the REGON register (Statistics Poland / GUS BIR) by NIP: REGON number, official name, legal form (legal or natural person), address (voivodeship, county, municipality). Covers A…

sprawdz_vies

Validate a counterparty's EU VAT number in the VIES system (European Commission). For Polish (PL) numbers the address is reduced to the town, because the number may belong to a natural person (GDPR).

sprawdz_rachunek

Check whether a bank account number (NRB) appears in the VAT White List for a given NIP. Due diligence for payments above PLN 15,000.

generuj_mikrorachunek

Generate the individual tax micro-account (for PIT/CIT/VAT payments) from a NIP. The server does not accept PESEL (personal ID) — for a PESEL compute it locally: BBAN = "101000712221" + PESEL + "0", I…

szukaj_pkd

Search PKD 2025 business activity codes by activity name or code number.

oblicz_odsetki

Calculate statutory or commercial (B2B) late-payment interest, broken down by NBP reference-rate periods.

szukaj_katalog_api

Search otwarteAPI.pl, a catalog of public Polish and EU APIs (VAT, KRS, GUS, NBP, ECB, Eurostat and more). Returns matching entries with a link to each API's official docs. An empty query returns the …

observe_nip

Add a NIP to monitoring. You get notified (via changes_since or email) when its VAT status, bank account, or registry data shown on the Ministry of Finance White List (name, address, KRS, REGON) chang…

unobserve_nip

Stop watching a NIP — the watch is deleted right away. Requires a skanfirmy API key.

list_observations

Return the list of NIPs you monitor, with their current VAT status and last-checked date (name is null for natural persons running a business). Each entry keeps the raw Ministry of Finance literal in …

changes_since

Return changes (VAT status, bank accounts, or registry data — name, address, KRS, REGON — from the White List) detected since a given date for the NIPs you monitor. The field property is one of: statu…

set_webhook

Set (or clear) a push webhook URL for your monitoring, instead of or in addition to polling. When we detect a change for a monitored NIP, we send a POST signed with HMAC-SHA256 (X-Skanfirmy-Signature …

How to use

Claude Desktop or claude.ai: add a custom connector (Customize → Connectors; on Team and Enterprise plans an owner adds it under Organization settings → Connectors) with this server URL: https://skanfirmy.pl/mcp

Cursor or Cline: add to your MCP config:

{
  "mcpServers": {
    "skanfirmy": {
      "url": "https://skanfirmy.pl/mcp",
      "transport": "http"
    }
  }
}