Index / MCP servers / Czech Company Registry (ARES) Tools

Czech Company Registry (ARES) Tools MCP server

Czech Company Registry (ARES) Tools is an MCP server with 6 tools an agent can call, among them address_check, check_vat, company_lookup. It answers at https://czid.casuyi.com/mcp over streamable HTTP, and it listed its tools to an anonymous client, so no sign-in was needed for that. Our probes reached it 4 of 4 times since 15 September 2026; the last check, on 19 October 2026, succeeded.

Status

Answering

Tools

Reliability

4 of 4 checks

Response time

320 ms

Transport

streamable HTTP

Last checked

19 October 2026

Czech ARES company registry: VAT, insolvency, RÚIAN addresses, IČO/DIČ checks. All free, no auth.

Description as the publisher wrote it.

The 6 tools Czech Company Registry (ARES) Tools offers

Tool	What it does
`address_check`	Free-text Czech address -> RÚIAN-standardized (full KOD ADM, codes for obec/část/ulice, correct PSC). Inputs: address
`check_vat`	Authoritative plátce-DPH status from RZP register: payer yes/no, effective from, tax office, trade licences. Use before issuing/czech invoicing. Batch up to 20 IČOs. Inputs: ids
`company_lookup`	Basic register (ARES) lookup: name, legal form, registered address, NACE, data-box, VAT DIČ. Input: IČO (8 digits) or DIČ (CZ+10). Inputs: id
`entity_status`	KYC-style snapshot: active/cancelled, which registers the entity appears in (VR, RZP, NRPZS, RS insolvency, RCNS, SZR...), plus insolvency-register record if present. Inputs: id
`search_company`	Company-name search in ARES (prefix match, case-insensitive; no wildcards). Returns IČOs + names + addresses for further lookups. Inputs: name, limit
`validate_cz`	Checksum/format validation: IČO (mod-11), DIČ (CZ+IČO or birth number), IBAN (mod-97, CZ-specific), variable symbol. Pure local, no network. Inputs: ico, dic, iban, variableSymbol

Add Czech Company Registry (ARES) Tools to your AI client

Every block below points at https://czid.casuyi.com/mcp. Pick your client and copy.

Claude Code: one command in your terminal

claude mcp add --transport http czech-company-registry-ares-tool https://czid.casuyi.com/mcp

Claude Desktop: claude_desktop_config.json

{
  "mcpServers": {
    "czech-company-registry-ares-tool": {
      "command": "npx",
      "args": ["-y", "mcp-remote", "https://czid.casuyi.com/mcp"]
    }
  }
}

Cursor: ~/.cursor/mcp.json, or .cursor/mcp.json in a project

{
  "mcpServers": {
    "czech-company-registry-ares-tool": {
      "url": "https://czid.casuyi.com/mcp"
    }
  }
}

VS Code and GitHub Copilot: .vscode/mcp.json

{
  "servers": {
    "czech-company-registry-ares-tool": {
      "type": "http",
      "url": "https://czid.casuyi.com/mcp"
    }
  }
}

Zed: Zed settings.json

{
  "context_servers": {
    "czech-company-registry-ares-tool": {
      "url": "https://czid.casuyi.com/mcp"
    }
  }
}

Windsurf: ~/.codeium/mcp_config.json

{
  "mcpServers": {
    "czech-company-registry-ares-tool": {
      "serverUrl": "https://czid.casuyi.com/mcp"
    }
  }
}

JetBrains AI Assistant: Settings, Tools, AI Assistant, MCP, New MCP Server, as JSON

{
  "mcpServers": {
    "czech-company-registry-ares-tool": {
      "url": "https://czid.casuyi.com/mcp"
    }
  }
}

Continue: .continue/mcpServers/neuronto.yaml

name: Czech Company Registry (ARES) Tools
version: 0.0.1
schema: v1
mcpServers:
  - name: Czech Company Registry (ARES) Tools
    type: streamable-http
    url: https://czid.casuyi.com/mcp

Gemini CLI: ~/.gemini/settings.json

{
  "mcpServers": {
    "czech-company-registry-ares-tool": {
      "httpUrl": "https://czid.casuyi.com/mcp"
    }
  }
}

Codex CLI: MCP server config

{
  "mcpServers": {
    "czech-company-registry-ares-tool": {
      "type": "http",
      "url": "https://czid.casuyi.com/mcp"
    }
  }
}

Warp: MCP servers, + Add, paste JSON

{
  "mcpServers": {
    "czech-company-registry-ares-tool": {
      "url": "https://czid.casuyi.com/mcp"
    }
  }
}

Goose: a one-click extension link

goose://extension?url=https%3A%2F%2Fczid.casuyi.com%2Fmcp&type=streamable_http&id=czech-company-registry-ares-tool&name=Czech%20Company%20Registry%20%28ARES%29%20Tools

Is Czech Company Registry (ARES) Tools up right now?

It answered our last check on 19 October 2026 in 320 ms. Over 4 checks since 15 September 2026 it answered 4. Status here comes from Neuronto's own probes, not from the publisher.

MCP servers similar to Czech Company Registry (ARES) Tools

Ares10 tools skanfirmy.pl14 tools Adis3 tools Dd12 tools Eu Registry3 tools CompanyData.dk0 tools

Questions about Czech Company Registry (ARES) Tools

How many tools does Czech Company Registry (ARES) Tools have?

6, as returned by the server's own tools/list on 24 September 2026: address_check, check_vat, company_lookup, entity_status, search_company, validate_cz.

Is Czech Company Registry (ARES) Tools down?

It answered our last check on 19 October 2026 in 320 ms. Over 4 checks since 15 September 2026 it answered 4.

How do I add Czech Company Registry (ARES) Tools to Cursor?

Put the server under mcpServers in ~/.cursor/mcp.json with the URL https://czid.casuyi.com/mcp. The exact JSON is above, with the same setup for Claude Code, Claude Desktop, VS Code, Windsurf, Zed, Gemini CLI and the rest.

Does Czech Company Registry (ARES) Tools need an API key?

It listed its tools to an anonymous client, so reading the tool list needs no key. Individual tools can still ask for credentials in their own inputs.

Where this comes from

Publisher: io.github.appvantagelabs2-a11y. Endpoint host: czid.casuyi.com. ARD identifier: urn:air:io.github.appvantagelabs2-a11y:mcp:czid. First indexed 15 September 2026. The tools are exactly what the server returned; nothing on this page is inferred from its name. Ranking in Neuronto search is never for sale.

Is this your server? Get a message the day it stops answering or its tools change: monitoring, 14 days free. Or claim the domain to manage how it is listed.