MCP server

Cz-agents Ares Official

dev.cz-agents/ares

Checked 25 Oct 2026, 20:29 UTC · Connected to it and listed its tools

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

Website Source

At a glance

Type

MCP server

Publisher

cz-agents.dev (verified by the MCP Registry)

Status

Working at last check

Tools

11

Token cost

About 1,902 tokens per request

Sets up in

Claude Code, Claude Desktop, Codex, Gemini CLI, Cursor, VS Code, Antigravity, ChatGPT, OpenAI API, Grok

Last checked

25 Oct 2026, 20:29 UTC

Connect it to your agent

Add to CursorAdd to VS CodeVS Code Insiders

Opens the app, which shows the server and asks you to confirm. For other apps, copy the setup below.

Claude Code

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

Claude Desktop

Settings → Connectors → Add custom connector, and paste the URL.

Codex (config.toml)

[mcp_servers.ares]
url = "https://ares.cz-agents.dev/mcp"

Gemini CLI

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

Cursor

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

VS Code

{"servers":{"ares":{"type":"http","url":"https://ares.cz-agents.dev/mcp"}}}

Antigravity

agy mcp add ares https://ares.cz-agents.dev/mcp

ChatGPT

Settings → Apps & Connectors → Advanced settings: turn on Developer mode, then Create a connector and paste the URL. Which plans can do this varies.

OpenAI API (Responses tools)

{"type":"mcp","server_label":"ares","server_url":"https://ares.cz-agents.dev/mcp","require_approval":"always"}

Grok (xAI API tools)

{"type":"mcp","server_label":"ares","server_url":"https://ares.cz-agents.dev/mcp"}

Tools

• check_vat_payer ~119 tokens
  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).
• get_bank_accounts ~122 tokens
  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_history ~109 tokens
  Get historical record of a company (previous names, registered address changes, trade license history). Useful for due diligence.
• get_owners ~238 tokens
  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)
• get_statutaries ~140 tokens
  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.
• lookup_by_ico ~158 tokens
  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.
• search_by_address ~204 tokens
  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.
• search_by_nace ~190 tokens
  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.
• search_companies ~310 tokens
  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.
• validate_dic ~127 tokens
  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.
• watch_entity ~185 tokens
  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

Browse

• Website monitoring
• Payments
• Invoicing and accounting
• Legal research

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