MCP server

Czech Company Registry (ARES) Tools

io.github.appvantagelabs2-a11y/czid

Checked 26 Oct 2026, 08:29 UTC · Connected to it and listed its tools

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

Working at last checkAbout 770 tokens per request once connected6 tools

https://czid.casuyi.com/mcp

At a glance

Type: MCP server
Publisher: Not verified
Status: Working at last check
Tools: 6
Token cost: About 770 tokens per request
Sets up in: Claude Code, Claude Desktop, Codex, Gemini CLI, Cursor, VS Code, Antigravity, ChatGPT, OpenAI API, Grok
Last checked: 26 Oct 2026, 08:29 UTC

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 czid https://czid.casuyi.com/mcp

Claude Desktop

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

Codex (config.toml)

[mcp_servers.czid]
url = "https://czid.casuyi.com/mcp"

Gemini CLI

{"mcpServers":{"czid":{"httpUrl":"https://czid.casuyi.com/mcp"}}}

Cursor

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

VS Code

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

Antigravity

agy mcp add czid https://czid.casuyi.com/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":"czid","server_url":"https://czid.casuyi.com/mcp","require_approval":"always"}

Grok (xAI API tools)

{"type":"mcp","server_label":"czid","server_url":"https://czid.casuyi.com/mcp"}

address_check ~104 tokens
Free-text Czech address -> RÚIAN-standardized (full KOD ADM, codes for obec/část/ulice, correct PSC).
check_vat ~182 tokens
Plátce-DPH status from the ARES RZP record, cross-checked against the ARES DPH source flag. RZP is a HISTORICAL register (records can stop updating in 2016), so a positive here is not proof of current plátcost — the result carries registerState + caution when the two disagree. For a legally binding
company_lookup ~109 tokens
Basic register (ARES) lookup: name, legal form, registered address, NACE, data-box, VAT DIČ. Input: IČO (8 digits) or DIČ (CZ+10).
entity_status ~123 tokens
KYC-style snapshot: active/cancelled, which registers the entity appears in (VR, RZP, IR insolvency, NRPZS, RCNS, SZR...), plus an insolvency presence flag (IR). Insolvency is presence-only — case detail needs ISIR.
search_company ~140 tokens
Company-name search in ARES (prefix match, case-insensitive; no wildcards). Returns IČOs + names + addresses for further lookups.
validate_cz ~112 tokens
Checksum/format validation: IČO (mod-11), DIČ (CZ+IČO or birth number), IBAN (mod-97, CZ-specific), variable symbol. Pure local, no network.

Cz-agents Isir
Czech insolvency register (ISIR) — active/historical insolvency & bankruptcy by IČO or person.
Cz-agents Realestate
Czech distressed real estate — anonymized district aggregates (k≥5). Free tier.
Sirenic
Official French and European company data for AI agents, paid per call (x402) or by API key.
Cz-agents Dd
Czech & EU due diligence in one call — facts, insolvency, sanctions, VAT, risk score, UBO chain.
Polish KYB
Know-your-business checks for Polish companies: KRS, owners, insolvency, sanctions, gazette notices.
Fuentio: UK, France & Spain company data from official registries
Official UK, France and Spain company checks for AI agents
Cz-agents Ares
Czech & Slovak business registry — company lookup by IČO, name, legal form, VAT. Official ARES.
US Company Intelligence for AI Agents (SEC EDGAR, x402)
SEC EDGAR company briefs for agents: cited synthesis, XBRL metrics. x402/USDC, no account.

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