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Ares

martinhavel/cz-agents-mcp
210 toolsSTDIO, HTTPregistry active
Summary

Connects Claude to the Czech Business Register (ARES) and related government databases. You get nine tools: lookup by IČO, full-text company search, statutory body extraction, VAT status checks, transparent account listings, and address-based queries. Validates DIČ checksums and tracks company history (name changes, address moves). Built for KYC workflows where you need to screen Czech suppliers or invoice issuers before payment. Part of a larger cz-agents suite that includes sanctions screening, insolvency checks, and ČNB exchange rates. The aggregator package bundles these into due diligence reports with risk scoring. Works over stdio or streamable HTTP. The developer offers a hosted version with nominee detection and monitoring, but the open source package hits the public ARES API directly.

Install to Claude Code

verified
claude mcp add --transport http ares https://ares.cz-agents.dev/mcp

Run in your terminal. Add --scope user to make it available in every project.

Review the command, arguments, and environment values before installing — MCP servers run with your local permissions.

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Tools

Verified live against the running server on Jun 10, 2026.

verified live10 tools
lookup_by_icoGet a single Czech company record by its IČO (8-digit Business ID). Returns official name, registered address, legal form, VAT ID (DIČ), founding date, and trade license activities. Returns null if IČO is not found in ARES.1 params

Get a single Czech company record by its IČO (8-digit Business ID). Returns official name, registered address, legal form, VAT ID (DIČ), founding date, and trade license activities. Returns null if IČO is not found in ARES.

Parameters* required
ico*string
Czech IČO — 7 or 8 digits. Examples: "11122234", "87654326". Auto-validated with MOD11 checksum.
search_companiesSearch ARES by company name, city, street, PSČ, or NACE code. Combines all filters with AND. Useful when user knows name but not IČO, looking for companies in a building, or all businesses in a sector.7 params

Search ARES by company name, city, street, PSČ, or NACE code. Combines all filters with AND. Useful when user knows name but not IČO, looking for companies in a building, or all businesses in a sector.

Parameters* required
pscinteger
Filter by postal code (PSČ), 5-digit number.
citystring
Filter by city (nazev obce), e.g. "Praha".
nacearray
Filter by CZ-NACE activity codes, 2-6 digits. E.g., ["62"] for IT.
pocetinteger
Max results (1-100, default 10).default: 10
querystring
Partial or full company name (obchodní jméno).
startinteger
Pagination offset (default 0).default: 0
streetstring
Filter by street name (nazev ulice), e.g. "Radlická".
search_by_addressFind all companies registered at a given Czech address. Useful for due diligence (virtual offices, shell companies), real estate research, or competitor mapping in a building.4 params

Find all companies registered at a given Czech address. Useful for due diligence (virtual offices, shell companies), real estate research, or competitor mapping in a building.

Parameters* required
pscinteger
Postal code (PSČ), optional.
city*string
City name, e.g. "Praha".
pocetinteger
Max results (default 20).default: 20
street*string
Street name (nazev ulice), e.g. "Radlická".
search_by_naceFind Czech companies by CZ-NACE activity code (economic sector classification). Example: "62" = IT, "47" = retail, "86" = healthcare. Optional city filter. Useful for market research.3 params

Find Czech companies by CZ-NACE activity code (economic sector classification). Example: "62" = IT, "47" = retail, "86" = healthcare. Optional city filter. Useful for market research.

Parameters* required
citystring
Optional city filter.
nace*string
CZ-NACE code, 2-6 digits (e.g., "62" for IT, "62010" for programming services).
pocetinteger
Max results.default: 20
get_bank_accountsGet transparent bank accounts published for this company (only available for VAT-registered subjects). Useful to verify payment details on an invoice match the company.1 params

Get transparent bank accounts published for this company (only available for VAT-registered subjects). Useful to verify payment details on an invoice match the company.

Parameters* required
ico*string
Czech IČO (7-8 digits).
get_statutariesGet current statutory body (jednatelé, představenstvo, etc.) of a Czech company — who can legally act on its behalf. Returns active members only (with valid zápis, not yet removed). Essential for due diligence and compliance checks.1 params

Get current statutory body (jednatelé, představenstvo, etc.) of a Czech company — who can legally act on its behalf. Returns active members only (with valid zápis, not yet removed). Essential for due diligence and compliance checks.

Parameters* required
ico*string
Czech IČO (7-8 digits).
validate_dicValidate a Czech DIČ (VAT ID). Format check: "CZ" + 8-10 digits. For 8-digit tail (legal entities) also runs MOD11 checksum against the embedded IČO.1 params

Validate a Czech DIČ (VAT ID). Format check: "CZ" + 8-10 digits. For 8-digit tail (legal entities) also runs MOD11 checksum against the embedded IČO.

Parameters* required
dic*string
Czech DIČ — e.g., "CZ26168685". Whitespace and case tolerated.
check_vat_payerCheck whether a Czech company is a registered VAT payer (plátce DPH). If yes, returns DIČ, financial office, and any transparent bank accounts (payment details).1 params

Check whether a Czech company is a registered VAT payer (plátce DPH). If yes, returns DIČ, financial office, and any transparent bank accounts (payment details).

Parameters* required
ico*string
Czech IČO (7-8 digits).
get_historyGet historical record of a company (previous names, registered address changes, trade license history). Useful for due diligence.1 params

Get historical record of a company (previous names, registered address changes, trade license history). Useful for due diligence.

Parameters* required
ico*string
Czech IČO (7-8 digits).
watch_entityStart onboarding for free monitoring of one Czech company by IČO. Stub only — persists nothing yet. Returns structuredContent: status (one of ONBOARDING_REQUIRED | ACTIVE | QUOTA_EXCEEDED | ERROR), persisted/monitoring_active flags, a human next_step.url for onboarding (the us...1 params

Start onboarding for free monitoring of one Czech company by IČO. Stub only — persists nothing yet. Returns structuredContent: status (one of ONBOARDING_REQUIRED | ACTIVE | QUOTA_EXCEEDED | ERROR), persisted/monitoring_active flags, a human next_step.url for onboarding (the us...

Parameters* required
ico*string
Czech IČO (7-8 digits).

cz-agents-mcp

CI License: MIT MCP Registry Glama

Model Context Protocol servers for Czech & EU government and business data. Native access to ARES (company registry), ČNB (FX rates), ADIS (VAT-payer status), ISIR (insolvency), EU + OFAC sanctions screening, and EU business registries (GB/SK/PL/NL/DE/FR) — plus a unified due-diligence aggregator that combines them into risk scoring and statutory-chain (UBO) analysis.

Want a hosted, production-ready version? cz-agents.dev — managed API with a 14-day free trial (no credit card). Adds higher quotas, nominee detection, risk timeline, address crowding, watchlist monitoring, and a web compliance dashboard. Your self-hosted config keeps working after upgrade — same endpoints, same token format.

Landing page: cz-agents.dev · Listed in: official MCP Registry under DNS-verified namespace dev.cz-agents/*

Available servers

PackageSourceStatus
@czagents/aresARES — Czech Business Register✅ live
@czagents/cnbČNB — daily FX rates✅ live
@czagents/sanctionsEU + OFAC sanctions screening (KYC/AML)✅ live
@czagents/isirISIR — Czech insolvency register✅ live
@czagents/adisADIS — unreliable VAT payer (nespolehlivý plátce DPH) + transparent accounts✅ live
@czagents/ddDue-diligence aggregator (ARES + sanctions + ISIR + ADIS + statutory chain)✅ live
@czagents/realestateCzech distress real estate intelligence (ISIR sales + portál dražeb)✅ live (v0.1)
@czagents/eu-registryEU business registries — GB (Companies House), SK, PL, NL, DE, FR via GLEIF/LEI✅ live
@czagents/payqrPayment QR codes (SPAYD / EPC-GiroCode) — bonus utility✅ live

Premium tier — closed source

ServerWhat it addsWhere
dev.cz-agents/ddplus8-indicator nominee director detection (cross-DB), phoenix recidiva, enriched risk timeline with AI narrative, recursive linked-entities risk analysis (depth 1-3), shell-firm address crowding with provider detection, daily watchlist monitoring with email digestHosted-only at ddplus.cz-agents.dev/mcp — see pricing

Quick start

Claude Desktop / Cursor (stdio)

{
  "mcpServers": {
    "ares":      { "command": "npx", "args": ["-y", "@czagents/ares"] },
    "cnb":       { "command": "npx", "args": ["-y", "@czagents/cnb"] },
    "sanctions": { "command": "npx", "args": ["-y", "@czagents/sanctions"], "env": { "SANCTIONS_DB": "/path/to/sanctions.db" } },
    "isir":      { "command": "npx", "args": ["-y", "@czagents/isir"], "env": { "ISIR_SOAP_ENABLED": "1" } },
    "adis":      { "command": "npx", "args": ["-y", "@czagents/adis"], "env": { "ADIS_SOAP_ENABLED": "1" } },
    "dd":          { "command": "npx", "args": ["-y", "@czagents/dd"], "env": { "SANCTIONS_DB": "/path/to/sanctions.db", "ADIS_SOAP_ENABLED": "1" } },
    "eu-registry": { "command": "npx", "args": ["-y", "@czagents/eu-registry"] },
    "payqr":       { "command": "npx", "args": ["-y", "@czagents/payqr"] }
  }
}

Remote / Streamable HTTP

{
  "mcpServers": {
    "ares":        { "url": "https://ares.cz-agents.dev/mcp" },
    "cnb":         { "url": "https://cnb.cz-agents.dev/mcp" },
    "sanctions":   { "url": "https://sanctions.cz-agents.dev/mcp" },
    "isir":        { "url": "https://isir.cz-agents.dev/mcp" },
    "adis":        { "url": "https://adis.cz-agents.dev/mcp" },
    "dd":          { "url": "https://dd.cz-agents.dev/mcp" },
    "eu-registry": { "url": "https://eu-registry.cz-agents.dev/mcp" },
    "payqr":       { "url": "https://payqr.cz-agents.dev/mcp" }
  }
}

Tools

@czagents/ares (9 tools)

  • lookup_by_ico({ ico }) — full company record
  • search_companies({ query, city, street, psc, nace, pocet }) — combined search
  • search_by_address({ street, city, psc }) — all companies at an address
  • search_by_nace({ nace, city }) — by CZ-NACE activity code
  • get_statutaries({ ico }) — current statutory body (for due diligence)
  • validate_dic({ dic }) — DIČ format + MOD11 checksum
  • check_vat_payer({ ico }) — VAT registration + transparent accounts
  • get_bank_accounts({ ico }) — DPH-published accounts
  • get_history({ ico }) — previous names, address changes

@czagents/cnb (3 tools)

  • get_rates({ date? }) — full daily FX sheet
  • convert({ amount, from, to, date? }) — CZK-crossed conversion
  • get_rate({ code, date? }) — single currency rate

@czagents/sanctions (5 tools)

  • search_person({ name, dob?, nationality?, threshold? }) — fuzzy KYC screen against EU + OFAC
  • search_entity({ name, country?, threshold? }) — entity / company screen
  • check_ico({ ico, name? }) — direct lookup of a Czech IČO on sanctions lists
  • get_listing({ id }) — full record by ${source}:${id}
  • list_recent_updates({ since, source? }) — daily monitoring (added/removed/modified)

@czagents/isir (3 tools)

  • check_ico_insolvency({ ico }) — direct lookup of a Czech IČO in the insolvency register
  • search_person_insolvency({ ico?, rc?, dob?, firstname?, surname? }) — find a person by IČO, birth number, or name + DOB
  • poll_isir_events({ since }) — append-only event feed for daily monitoring

@czagents/adis (3 tools)

  • check_dph_payer({ ico OR dic }) — full reliability check via ADIS V2: status (ANO/NE/NENALEZEN), subject type, name, address, transparent bank accounts (§ 96a ZDPH), unreliable-since date
  • check_bulk_dph_payer({ icos[] OR dics[] }) — batch up to 100 subjects (lighter response, status + accounts only)
  • list_unreliable_payers() — full list of currently unreliable payers (50–100 MB, intended for daily mirroring)

@czagents/dd (3 tools)

  • get_dd_report({ ico, depth }) — unified ARES + sanctions + ISIR report with risk score
  • get_risk_score({ ico }) — fast 0–100 score + top red flags
  • get_statutory_chain({ ico, max_depth }) — UBO / shell-company tree walk

@czagents/eu-registry (3 tools)

  • get_eu_company({ country, id }) — company record from GB (Companies House), SK (ORSR), PL (KRS), NL/DE/FR (GLEIF/LEI), SIRENE
  • get_eu_parent({ ico }) — find EU parent/group via ARES → GLEIF LEI matching with confidence scoring
  • get_eu_dd_report({ country, id }) — EU DD report: company facts + EU + OFAC sanctions check

What this is good for

A toolkit for compliance, KYC/AML, accounting and cross-border checks over Czech & EU registries:

  • VAT & invoicing — verify VAT-payer status (ADIS) and convert at official ČNB FX rates before booking.
  • Counterparty screening — ARES identity, EU + OFAC sanctions, ISIR insolvency.
  • Due diligence (flagship) — the @czagents/dd aggregator combines the above into a risk score, statutory-chain / UBO walk, and EU-parent lookup.
  • Cross-border — company lookups across GB / SK / PL / NL / DE / FR registries (@czagents/eu-registry).

Use a single-source server when you need just one dataset; use the due-diligence aggregator for combined, scored output.

Example prompts the aggregator handles well:

  • KYC pre-invoice — "Before we send a 350 000 Kč invoice to IČO 11122234, flag any insolvency, sanctions, unreliable-VAT-payer status, or nominee-director red flags."
  • Vendor onboarding — "Run KYC on this prospective supplier and tell me if anything looks off. Use the full statutory chain."
  • M&A pre-due-diligence — "Generate a DD report on the acquisition target and walk the statutory body two levels deep — flag any insolvent firms in the network."

Score & validation

Glama Score

A/A/A on Glama (quality / security / license), claimed and maintained. Listed in the official MCP registry under DNS-verified namespace dev.cz-agents/*.

Further reading

  • Building MCP servers for a country that isn't in the dataset — design rationale, gotchas (MOD11, ARES Swagger bugs), and how this pattern adapts MCP to non-English locales.

License

MIT © Martin Havel — see LICENSE

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Categories
Sales & Marketing
Registryactive
Package@czagents/ares
TransportSTDIO, HTTP
Tools verifiedJun 10, 2026
UpdatedJun 2, 2026
View on GitHub

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