Czech Company Registry (ARES) Tools
Czech ARES company registry: VAT, insolvency, RÚIAN addresses, IČO/DIČ checks. All free, no auth.
Should I use this
Quality & Safety
Findings (1)
- LOWTool 'check_vat' description lacks action verbin check_vat
Based on automated analysis of tool definitions and protocol compliance.
Context Cost
This is the approximate number of tokens consumed each time the server's tools are loaded into a model's context. Higher counts reduce the attention available for other tasks.
Install
One-Click Install
Add this to your `claude_desktop_config.json` file:
{
"mcpServers": {
"czid": {
"url": "https://czid.casuyi.com/mcp"
}
}
}Remote endpoints
https://czid.casuyi.com/mcpstreamable-httpWhat it can do
Tool inventory
Tools (6)
⚪company_lookup(id)
Basic register (ARES) lookup: name, legal form, registered address, NACE, data-box, VAT DIČ. Input: IČO (8 digits) or DIČ (CZ+10).
Input Schema
{
"type": "object",
"properties": {
"id": {
"type": "string",
"description": "IČO (e.g. 27082440) or DIČ (e.g. CZ27082440)"
}
},
"required": [
"id"
],
"$schema": "https://json-schema.org/draft/2020-12/schema"
}🟢check_vat(ids)
Authoritative plátce-DPH status from RZP register: payer yes/no, effective from, tax office, trade licences. Use before issuing/czech invoicing. Batch up to 20 IČOs.
Input Schema
{
"type": "object",
"properties": {
"ids": {
"minItems": 1,
"maxItems": 20,
"type": "array",
"items": {
"type": "string"
},
"description": "IČOs or DIČs (CZ+10)"
}
},
"required": [
"ids"
],
"$schema": "https://json-schema.org/draft/2020-12/schema"
}⚪entity_status(id)
KYC-style snapshot: active/cancelled, which registers the entity appears in (VR, RZP, NRPZS, RS insolvency, RCNS, SZR...), plus insolvency-register record if present.
Input Schema
{
"type": "object",
"properties": {
"id": {
"type": "string",
"description": "IČO or DIČ"
}
},
"required": [
"id"
],
"$schema": "https://json-schema.org/draft/2020-12/schema"
}🟢search_company(name, limit)
Company-name search in ARES (prefix match, case-insensitive; no wildcards). Returns IČOs + names + addresses for further lookups.
Input Schema
{
"type": "object",
"properties": {
"name": {
"type": "string",
"minLength": 2,
"description": "Company name or name prefix (e.g. \"Alza\")"
},
"limit": {
"description": "Max results (default 10)",
"type": "integer",
"minimum": 1,
"maximum": 50
}
},
"required": [
"name"
],
"$schema": "https://json-schema.org/draft/2020-12/schema"
}⚪validate_cz(ico, dic, iban, variableSymbol)
Checksum/format validation: IČO (mod-11), DIČ (CZ+IČO or birth number), IBAN (mod-97, CZ-specific), variable symbol. Pure local, no network.
Input Schema
{
"type": "object",
"properties": {
"ico": {
"type": "string"
},
"dic": {
"type": "string"
},
"iban": {
"type": "string"
},
"variableSymbol": {
"type": "string"
}
},
"$schema": "https://json-schema.org/draft/2020-12/schema"
}🟢address_check(address)
Free-text Czech address -> RÚIAN-standardized (full KOD ADM, codes for obec/část/ulice, correct PSC).
Input Schema
{
"type": "object",
"properties": {
"address": {
"type": "string",
"minLength": 3,
"description": "e.g. \"Václavské náměstí 1, Praha\""
}
},
"required": [
"address"
],
"$schema": "https://json-schema.org/draft/2020-12/schema"
}Community
Evidence