ares

dev.cz-agents/aresVersion 0.1.9

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

Status

Responds148 msNov 14, 2026, 14:25 UTCAnswered our handshake without sign-in.

Registry data may be out of date

We could not refresh it, so this page shows the last copy.

Last checked: Nov 14, 2026, 14:25 UTC
Latency: 148 ms
Remotes responding: 1 of 1
Sign-in: No sign-in
Hosting: Hosted outside the EU (detected)
Registry data as of: Nov 14, 2026, 21:12 UTC

Data from the official MCP Registry, checked by run.zero. How we check

Connect

Streamable HTTP

https://ares.cz-agents.dev/mcpResponds148 msNov 14, 2026, 14:25 UTC

No sign-in

Claude Code

claude mcp add --transport http ares https://ares.cz-agents.dev/mcp

Claude Desktop and claude.ai

1
2
3

Settings > Connectors > Add custom connector
Name: ares
Remote MCP server URL: https://ares.cz-agents.dev/mcp

Cursor

{
  "mcpServers": {
    "ares": {
      "url": "https://ares.cz-agents.dev/mcp"
    }
  }
}

VS Code

code --add-mcp '{"name":"ares","type":"http","url":"https://ares.cz-agents.dev/mcp"}'

Streamable HTTP

npm: @czagents/ares 0.1.7

Package only

npm (npx)

claude mcp add ares -- npx -y @czagents/ares@0.1.7

Built your own server? run.zero hosts MCP servers on European infrastructure.

Host your own MCP server on run.zero

Tools

11 tools

Tools of ares
	Description		Read-only	Idempotent	Open world
`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).	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).	Not declared	Yes	Not declared	Yes
`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.	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.	Not declared	Yes	Not declared	Yes
`get_history`Get historical record of a company (previous names, registered address changes, trade license history). Useful for due diligence.	Get historical record of a company (previous names, registered address changes, trade license history). Useful for due diligence.	Not declared	Yes	Not declared	Yes
`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.	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.	Not declared	Yes	Not declared	Yes
`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.	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.	Not declared	Yes	Not declared	Yes
`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.	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.	Not declared	Yes	Not declared	Yes
`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.	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.	Not declared	Yes	Not declared	Yes
`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.	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.	Not declared	Yes	Not declared	Yes
`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.	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.	Not declared	Yes	Not declared	Yes
`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.	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.	Not declared	Yes	Not declared	Not declared
`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.	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.	Not declared	Yes	Not declared	No

Details

Registry status: Active
Published: Jun 2, 2026
Updated: Jun 2, 2026
Website: https://cz-agents.dev/⁠ (opens in a new tab)
Repository: https://github.com/martinhavel/cz-agents-mcp⁠ (opens in a new tab)
Categories (suggested): Invoicing and accounting Finance and paymentsSuggested categories are assigned automatically from the registry text and may be wrong. Verified operators can correct them.
GDPR: Not declared

Are you the operator? Claim this listing