MCP server · @czagents/ares · free

ARES MCP server

Open-source ARES MCP server: Czech Business Register (IČO) lookup, full-text company search, statutory body, VAT payer check and bank accounts — as MCP tools for Claude, Cursor and any AI agent.

The ARES MCP server exposes the Czech Business Register (ARES — Administrativní registr ekonomických subjektů) as Model Context Protocol tools, so an AI agent can look up any Czech company by IČO, run a full-text name search, and read the statutory body, VAT status and published bank accounts without you writing an API client.

It is the base layer of the cz-agents compliance stack: due-diligence, sanctions screening and insolvency all build on ARES identity data. Free tier, open source, runs locally via npx or as a hosted endpoint.

Install

npx -y @czagents/ares

Add it to Claude Desktop or Cursor:

// claude_desktop_config.json "ares": { "command": "npx", "args": ["-y", "@czagents/ares"] }

MCP tools

lookup_by_icosearch_companiesget_statutariescheck_vat_payervalidate_dicget_bank_accountsget_history

Is the ARES MCP server free?

Yes. @czagents/ares is open source (MIT) with a free tier; run it locally with npx or self-host from the GitHub monorepo.

What can an AI agent do with ARES over MCP?

Look up a company by IČO, search companies by name, read the statutory body and signing rules, validate a DIČ/VAT number, check VAT-payer status and list published transparent bank accounts.

Prefer a no-code web app? Run the same checks by IČO in the browser — basic report free, no signup.

Open the web app →

npm: @czagents/ares · GitHub (open source)

Other MCP servers: due-diligence · sanctions · isir · cnb · vat-adis · eu-registry · real-estate