ares
Server Details
Czech & Slovak business registry — company lookup by IČO, name, legal form, VAT. Official ARES.
- Status
- Healthy
- Last Tested
- Transport
- Streamable HTTP
- URL
- Repository
- martinhavel/cz-agents-mcp
- GitHub Stars
- 4
- Server Listing
- cz-agents-mcp
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Usage analytics
See which tools your agents call, how often, and when, so you can understand usage patterns and catch anomalies.
Tool Definition Quality
Average 4.2/5 across 10 of 10 tools scored.
Each tool targets a distinct aspect of Czech company data: VAT status, bank accounts, historical changes, statutory bodies, basic lookup by IČO, address search, NACE search, combined search, DIČ validation, and monitoring. No significant overlap.
All tools use consistent snake_case and follow a verb_noun pattern (e.g., check_vat_payer, get_statutaries, search_companies). No mixing of conventions.
10 tools is appropriate for the domain of Czech company information, covering lookups, searches, VAT checks, history, and monitoring. Not excessive nor insufficient.
Core operations for the ARES domain are covered: lookup, search, VAT and DIČ checks, history, and statutory data. The watch_entity tool is a stub, and there might be missing advanced queries, but the set is largely complete for intended use.
Available Tools
10 toolscheck_vat_payerRead-onlyInspect
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).
| Name | Required | Description | Default |
|---|---|---|---|
| ico | Yes | Czech IČO (7-8 digits). |
get_bank_accountsRead-onlyInspect
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.
| Name | Required | Description | Default |
|---|---|---|---|
| ico | Yes | Czech IČO (7-8 digits). |
get_historyRead-onlyInspect
Get historical record of a company (previous names, registered address changes, trade license history). Useful for due diligence.
| Name | Required | Description | Default |
|---|---|---|---|
| ico | Yes | Czech IČO (7-8 digits). |
get_statutariesRead-onlyInspect
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.
| Name | Required | Description | Default |
|---|---|---|---|
| ico | Yes | Czech IČO (7-8 digits). |
lookup_by_icoRead-onlyInspect
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.
| Name | Required | Description | Default |
|---|---|---|---|
| ico | Yes | Czech IČO — 7 or 8 digits. Examples: "11122234", "87654326". Auto-validated with MOD11 checksum. |
search_by_addressRead-onlyInspect
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.
| Name | Required | Description | Default |
|---|---|---|---|
| psc | No | Postal code (PSČ), optional. | |
| city | Yes | City name, e.g. "Praha". | |
| pocet | No | Max results (default 20). | |
| street | Yes | Street name (nazev ulice), e.g. "Radlická". |
search_by_naceRead-onlyInspect
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.
| Name | Required | Description | Default |
|---|---|---|---|
| city | No | Optional city filter. | |
| nace | Yes | CZ-NACE code, 2-6 digits (e.g., "62" for IT, "62010" for programming services). | |
| pocet | No | Max results. |
search_companiesRead-onlyInspect
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.
| Name | Required | Description | Default |
|---|---|---|---|
| psc | No | Filter by postal code (PSČ), 5-digit number. | |
| city | No | Filter by city (nazev obce), e.g. "Praha". | |
| nace | No | Filter by CZ-NACE activity codes, 2-6 digits. E.g., ["62"] for IT. | |
| pocet | No | Max results (1-100, default 10). | |
| query | No | Partial or full company name (obchodní jméno). | |
| start | No | Pagination offset (default 0). | |
| street | No | Filter by street name (nazev ulice), e.g. "Radlická". |
validate_dicRead-onlyInspect
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.
| Name | Required | Description | Default |
|---|---|---|---|
| dic | Yes | Czech DIČ — e.g., "CZ26168685". Whitespace and case tolerated. |
watch_entityWatch Czech CompanyRead-onlyInspect
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.
| Name | Required | Description | Default |
|---|---|---|---|
| ico | Yes | Czech IČO (7-8 digits). |
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