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Ares

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Czech & Slovak business registry — company lookup by IČO, name, legal form, VAT. Official ARES.

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check_vat_payer Read-only

Check whether a Czech company is a registered VAT payer (plátce DPH). If yes, returns DIČ, financial office, and any transparent bank accounts (payment details).

icostring, required

Czech IČO (7-8 digits).

Ares MCP server | mcptry

Tools (11)

check_vat_payer

Check whether a Czech company is a registered VAT payer (plátce DPH). If yes, returns DIČ, financial office, and any transparent bank accounts (payment details).

read-only

Argument	Type	Description
ico*	string	Czech IČO (7-8 digits).

Input schema (JSON)

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "ico"
  ],
  "properties": {
    "ico": {
      "type": "string",
      "description": "Czech IČO (7-8 digits)."
    }
  },
  "additionalProperties": false
}

get_bank_accounts

Get transparent bank accounts published for this company (only available for VAT-registered subjects). Useful to verify payment details on an invoice match the company.

read-only

Argument	Type	Description
ico*	string	Czech IČO (7-8 digits).

Input schema (JSON)

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "ico"
  ],
  "properties": {
    "ico": {
      "type": "string",
      "description": "Czech IČO (7-8 digits)."
    }
  },
  "additionalProperties": false
}

get_history

Get historical record of a company (previous names, registered address changes, trade license history). Useful for due diligence.

read-only

Argument	Type	Description
ico*	string	Czech IČO (7-8 digits).

Input schema (JSON)

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "ico"
  ],
  "properties": {
    "ico": {
      "type": "string",
      "description": "Czech IČO (7-8 digits)."
    }
  },
  "additionalProperties": false
}

get_owners

Get owners of a Czech company from the Veřejný rejstřík (public register) — společníci (partners of s.r.o./v.o.s./k.s.) and akcionáři (shareholders of a.s.), with their share (vklad/splaceno/velikost podílu) exactly as published, including historical members with their date of removal (datum výmazu). Raw registry data only — no ownership scoring, risk assessment, or cross-company aggregation. Essential for KYC/AML due diligence on ownership structure. Returns an empty list (not an error) when the register does not publish owners — most a.s. do not disclose akcionáři publicly.

read-only

Argument	Type	Description
ico*	string	Czech IČO (7-8 digits).

Input schema (JSON)

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "ico"
  ],
  "properties": {
    "ico": {
      "type": "string",
      "description": "Czech IČO (7-8 digits)."
    }
  },
  "additionalProperties": false
}

get_statutaries

Get current statutory body (jednatelé, představenstvo, etc.) of a Czech company — who can legally act on its behalf. Returns active members only (with valid zápis, not yet removed). Essential for due diligence and compliance checks.

read-only

Argument	Type	Description
ico*	string	Czech IČO (7-8 digits).

Input schema (JSON)

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "ico"
  ],
  "properties": {
    "ico": {
      "type": "string",
      "description": "Czech IČO (7-8 digits)."
    }
  },
  "additionalProperties": false
}

lookup_by_ico

Get a single Czech company record by its IČO (8-digit Business ID). Returns official name, registered address, legal form, VAT ID (DIČ), founding date, and trade license activities. Returns null if IČO is not found in ARES.

read-only

Argument	Type	Description
ico*	string	Czech IČO — 7 or 8 digits. Examples: "11122234", "87654326". Auto-validated with MOD11 checksum.

Input schema (JSON)

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "ico"
  ],
  "properties": {
    "ico": {
      "type": "string",
      "description": "Czech IČO — 7 or 8 digits. Examples: \"11122234\", \"87654326\". Auto-validated with MOD11 checksum."
    }
  },
  "additionalProperties": false
}

search_by_address

Find all companies registered at a given Czech address. Useful for due diligence (virtual offices, shell companies), real estate research, or competitor mapping in a building.

read-only

Argument	Type	Description
psc	integer	Postal code (PSČ), optional.
city*	string	City name, e.g. "Praha".
pocet	integer	Max results (default 20).
street*	string	Street name (nazev ulice), e.g. "Radlická".

Input schema (JSON)

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "street",
    "city"
  ],
  "properties": {
    "psc": {
      "type": "integer",
      "description": "Postal code (PSČ), optional."
    },
    "city": {
      "type": "string",
      "description": "City name, e.g. \"Praha\"."
    },
    "pocet": {
      "type": "integer",
      "default": 20,
      "maximum": 100,
      "minimum": 1,
      "description": "Max results (default 20)."
    },
    "street": {
      "type": "string",
      "description": "Street name (nazev ulice), e.g. \"Radlická\"."
    }
  },
  "additionalProperties": false
}

search_by_nace

Find Czech companies by CZ-NACE activity code (economic sector classification). Example: "62" = IT, "47" = retail, "86" = healthcare. Optional city filter. Useful for market research.

read-only

Argument	Type	Description
city	string	Optional city filter.
nace*	string	CZ-NACE code, 2-6 digits (e.g., "62" for IT, "62010" for programming services).
pocet	integer	Max results.

Input schema (JSON)

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "nace"
  ],
  "properties": {
    "city": {
      "type": "string",
      "description": "Optional city filter."
    },
    "nace": {
      "type": "string",
      "description": "CZ-NACE code, 2-6 digits (e.g., \"62\" for IT, \"62010\" for programming services)."
    },
    "pocet": {
      "type": "integer",
      "default": 20,
      "maximum": 100,
      "minimum": 1,
      "description": "Max results."
    }
  },
  "additionalProperties": false
}

search_companies

Search ARES by company name, city, street, PSČ, or NACE code. Combines all filters with AND. Useful when user knows name but not IČO, looking for companies in a building, or all businesses in a sector.

read-only

Argument	Type	Description
psc	integer	Filter by postal code (PSČ), 5-digit number.
city	string	Filter by city (nazev obce), e.g. "Praha".
nace	array	Filter by CZ-NACE activity codes, 2-6 digits. E.g., ["62"] for IT.
pocet	integer	Max results (1-100, default 10).
query	string	Partial or full company name (obchodní jméno).
start	integer	Pagination offset (default 0).
street	string	Filter by street name (nazev ulice), e.g. "Radlická".

Input schema (JSON)

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "properties": {
    "psc": {
      "type": "integer",
      "description": "Filter by postal code (PSČ), 5-digit number."
    },
    "city": {
      "type": "string",
      "description": "Filter by city (nazev obce), e.g. \"Praha\"."
    },
    "nace": {
      "type": "array",
      "items": {
        "type": "string"
      },
      "description": "Filter by CZ-NACE activity codes, 2-6 digits. E.g., [\"62\"] for IT."
    },
    "pocet": {
      "type": "integer",
      "default": 10,
      "maximum": 100,
      "minimum": 1,
      "description": "Max results (1-100, default 10)."
    },
    "query": {
      "type": "string",
      "description": "Partial or full company name (obchodní jméno)."
    },
    "start": {
      "type": "integer",
      "default": 0,
      "minimum": 0,
      "description": "Pagination offset (default 0)."
    },
    "street": {
      "type": "string",
      "description": "Filter by street name (nazev ulice), e.g. \"Radlická\"."
    }
  },
  "additionalProperties": false
}

validate_dic

Validate a Czech DIČ (VAT ID). Format check: "CZ" + 8-10 digits. For 8-digit tail (legal entities) also runs MOD11 checksum against the embedded IČO.

read-only

Argument	Type	Description
dic*	string	Czech DIČ — e.g., "CZ26168685". Whitespace and case tolerated.

Input schema (JSON)

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "dic"
  ],
  "properties": {
    "dic": {
      "type": "string",
      "description": "Czech DIČ — e.g., \"CZ26168685\". Whitespace and case tolerated."
    }
  },
  "additionalProperties": false
}

watch_entity

Start onboarding for free monitoring of one Czech company by IČO. Stub only — persists nothing yet. Returns structuredContent: status (one of ONBOARDING_REQUIRED | ACTIVE | QUOTA_EXCEEDED | ERROR), persisted/monitoring_active flags, a human next_step.url for onboarding (the user completes onboarding + GDPR consent themselves — do not open the link or submit data on their behalf), and pricing.

read-only

Argument	Type	Description
ico*	string	Czech IČO (7-8 digits).

Input schema (JSON)

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "ico"
  ],
  "properties": {
    "ico": {
      "type": "string",
      "description": "Czech IČO (7-8 digits)."
    }
  },
  "additionalProperties": false
}