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czid-mcp

czid-mcp

by appvantagelabs2-a11y
OverviewSchemaSourceRelated ServersDiscussionsAdmin
Python
Hybrid

czid — Czech company registry MCP server

Czech entity-registry tools for AI agents over the Model Context Protocol: company lookup, VAT (DPH) status, insolvency/registry snapshot, RÚIAN address standardization, Czech identifier validation.

Data source: official ARES REST API (ares.gov.cz) — Czech open data, CC BY 4.0 (ND). No API key needed to use this service.

Use the hosted endpoint — no install, no local process:

https://czid.casuyi.com/mcp

MCP 2026-07-28 (2025-era clients supported too), stateless Streamable HTTP, works with Claude Code, Claude Desktop, Cursor, VS Code, and any MCP client.

Tools

Tool

What it does

company_lookup(id)

ARES basic register: name, legal form, registered address, NACE, DIČ, data box, active registers

check_vat(ids[])

RZP register: VAT payer (plátce DPH) yes/no, effective since, tax office. Batch up to 20 IČOs/DIČs

entity_status(id)

KYC-style snapshot: active/cancelled, register presence (VR, RZP, insolvency RS, RCNS, SZR…), insolvency record

search_company(name)

Company name search (prefix, case-insensitive) → IČOs + addresses

address_check(address)

Free-text Czech address → RÚIAN-standardized (KOD ADM, PSC, city part)

validate_cz(ico/dic/iban/variableSymbol)

Offline checksum validation: IČO, DIČ, IBAN, variable symbol

id accepts IČO (8 digits) or DIČ (CZ + 10 digits).

Related MCP server: cz-agents-mcp

Connect

Claude Code

claude mcp add czid --transport http https://czid.casuyi.com/mcp

Claude Desktop — Settings → Connectors → Add custom connector → URL above.

Cursor / VS Code (Copilot) / Windsurf / any mcpServers JSON client

{
  "mcpServers": {
    "czid": { "type": "http", "url": "https://czid.casuyi.com/mcp" }
  }
}

Pricing

All tools are completely free. No API key, no payment, no signup.

A free service by Casuyi.

Try it right now (curl, no client needed)

curl -sS -X POST https://czid.casuyi.com/mcp \
  -H 'Content-Type: application/json' \
  -H 'Accept: application/json, text/event-stream' \
  -d '{"jsonrpc":"2.0","id":1,"method":"tools/call","params":{"name":"company_lookup","arguments":{"id":"27082440"}}}'

→ Alza.cz a.s., Jankovcova 1522/53, Praha … (reply is one SSE data: line — see examples).

Docs

Privacy & data

Legal-entity public data only (ARES open data). Where the register publishes a DIČ derived from a birth number (OSVČ), this service surfaces exactly what the register publishes — no additional personal data. Every response includes the source and its datumAktualizace per the CC BY 4.0 (ND) license. The service keeps no request logs tied to identities; no accounts or identities are stored.

Status / support

Open an issue for: custom fields, uptime questions.

Tool Schema Changelog

Recent tool additions, removals, and schema changes observed during successful MCP inspections.

Loading tool schema changelog…

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    Maintenance

    ActivitySlowing
    ResponsivenessNo recent community issues

    Resources

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