Czech Company Registry (ARES) Tools

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How to connect

Add it to any MCP client that supports remote servers.

{
  "mcpServers": {
    "czech-company-registry-ares-tools": {
      "type": "http",
      "url": "https://czid.casuyi.com/mcp"
    }
  }
}

6 tools

• company_lookup

  Basic register (ARES) lookup: name, legal form, registered address, NACE, data-box, VAT DIČ. Input: IČO (8 digits) or DIČ (CZ+10).

• check_vat

  Authoritative plátce-DPH status from RZP register: payer yes/no, effective from, tax office, trade licences. Use before issuing/czech invoicing. Batch up to 20 IČOs.

• entity_status

  KYC-style snapshot: active/cancelled, which registers the entity appears in (VR, RZP, NRPZS, RS insolvency, RCNS, SZR...), plus insolvency-register record if present.

• search_company

  Company-name search in ARES (prefix match, case-insensitive; no wildcards). Returns IČOs + names + addresses for further lookups.

• validate_cz

  Checksum/format validation: IČO (mod-11), DIČ (CZ+IČO or birth number), IBAN (mod-97, CZ-specific), variable symbol. Pure local, no network.

• address_check

  Free-text Czech address -> RÚIAN-standardized (full KOD ADM, codes for obec/část/ulice, correct PSC).

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