# Apino

> REST API and MCP server for Slovak and Czech company data from the official registers: the Slovak Register of Legal Entities (commercial and trade register), the Czech Register of Economic Subjects, VAT payer lists and the tax reliability index, the Register of Financial Statements, and Peppol e-invoicing readiness. Synced daily, with a change feed delivered by API, webhook or email.

A company is identified by its IČO (company ID). Holding a VAT ID is not the same as being a VAT payer; use the `is_vat_payer` field. An absence from the Peppol network is reliable only when the answer says `checked: true`.

## API

- [API reference](https://docs.apino.sk): endpoints, parameters, examples
- [OpenAPI description](https://docs.apino.sk/openapi.yaml): the machine-readable contract
- [Changelog](https://docs.apino.sk/changelog/): what changed, with an Atom feed
- [MCP server](https://api.apino.sk/mcp): the same data as tools for AI assistants
- [Pricing](https://apino.sk/en/pricing): free plan, paid plans by request volume
- [Data status](https://apino.sk/en/status): when each register was last synced

## Data

- [Register of Legal Entities (RPO)](https://apino.sk/en/data/slovak-register-of-legal-entities): Slovak commercial and trade register data from the Register of Legal Entities: search, company detail, officers and change history. Synced daily, register defects corrected.
- [Slovak VAT payers](https://apino.sk/en/data/slovak-vat-payers): Verify a Slovak VAT payer by company ID, tax number or VAT ID from the Financial Administration's lists: registered, erased, and those with grounds for cancellation. Read daily.
- [Tax reliability index](https://apino.sk/en/data/slovak-tax-reliability-index): The tax reliability index from the Slovak Financial Administration's public list, by company ID or tax number, with rating changes tracked daily.
- [Financial statements (RÚZ)](https://apino.sk/en/data/slovak-financial-statements): Filed financial statements of Slovak companies from the Register of Financial Statements: period, kind and filing date. Daily, with an alert on a new filing and on a missing one.
- [E-invoicing (Peppol)](https://apino.sk/en/data/peppol-e-invoicing): Find out by company ID whether a Slovak company can receive an electronic invoice over Peppol. Checked against the network itself, not the directory; the whole register is walked every night.
- [Company changes](https://apino.sk/en/data/company-changes): Daily monitoring of Slovak companies: address, officers, VAT, tax reliability, financial statements and e-invoicing. By cursor API, webhook or email.
- [Czech company register (RES)](https://apino.sk/en/data/czech-company-register): Czech companies from the Register of Economic Subjects (Czech Statistical Office), in the same API and shape as Slovak ones: search by name and company ID, address, legal form, status.
- [Czech VAT register](https://apino.sk/en/data/czech-vat-register): Verify a Czech VAT payer by company ID or tax number against the Czech Ministry of Finance's register: payer status, unreliable payer and published bank accounts. Asked live.

## Guides

- [Check a company right in ChatGPT and Claude: connecting Apino](https://apino.sk/en/guides/check-a-company-in-chatgpt-and-claude): How to connect Apino to Claude, ChatGPT, Claude Code or Cursor so the assistant answers about Slovak and Czech companies from the registers, not from the web. What it can do, what it costs and how to disconnect it.
- [Slovak e-invoicing from 1 January 2027: who it affects and how to check a customer can receive one](https://apino.sk/en/guides/slovak-e-invoicing-2027): Who must issue and receive e-invoices in Slovakia from 2027, why they are addressed by tax number rather than company ID, what to do when a customer is not on Peppol, and how to check.
- [Getting ready to receive e-invoices in Slovakia: choosing a Digital Postman step by step](https://apino.sk/en/guides/digital-postman-receiving-e-invoices): What every Slovak company and sole trader must do by 1 January 2027 to receive e-invoices: tax number, the Financial Administration portal, choosing and contracting a Digital Postman, what it costs and how to check it works.
- [How to find a Slovak company's DIČ from its company ID (IČO)](https://apino.sk/en/guides/tax-number-from-company-id): Where a Slovak company's tax number (DIČ) can be found, why it is not in the business register, how it relates to the VAT ID, and why e-invoicing needs it from 2027.
- [A Slovak VAT ID does not make a VAT payer: registration under § 7 and § 7a](https://apino.sk/en/guides/slovak-vat-id-is-not-a-vat-payer): One in four Slovak companies with a VAT ID is not a VAT payer. What registration under § 7 and § 7a of the Slovak VAT Act means, why VIES cannot tell, and what it changes on an invoice.
- [Struck off the Slovak VAT register: what it means for the customer](https://apino.sk/en/guides/struck-off-the-slovak-vat-register): Why the Slovak Financial Administration cancels VAT registrations, what an erasure means for invoices from that supplier, and how to find out in time.
- [Slovak tax reliability index: what highly reliable, reliable and less reliable mean](https://apino.sk/en/guides/slovak-tax-reliability-index): What the Slovak tax reliability index is, who has one, how often it changes, what it means for a company and how to read it when choosing a business partner.
- [How to check a Slovak business partner before signing a contract](https://apino.sk/en/guides/checking-a-slovak-business-partner): A checklist from public Slovak registers: whether the company exists, who acts for it, VAT, the tax reliability index, financial statements, insolvency and e-invoicing — and why checking once is not enough.
- [When a Slovak company files its financial statements — and why a missing one may mean nothing yet](https://apino.sk/en/guides/slovak-financial-statements-deadline): The deadline for filing financial statements in Slovakia follows the tax return and can move by three or six months. What that means when you look up a partner's statements in the register.
- [Slovak business register API: getting company data into your application](https://apino.sk/en/guides/slovak-business-register-api): The Slovak commercial register has no public API. The options — processing the RPO open data yourself or using a ready API — and what to watch for when integrating.
- [Czech company data: the difference between RES and ARES](https://apino.sk/en/guides/czech-res-vs-ares): ARES and RES are often confused. What each is, who runs it, what it contains, and which to use when you need data on a Czech company or the full list.

## Free tools

- [VAT payer check](https://apino.sk/en/tools/vat-check)
- [Company ID check](https://apino.sk/en/tools/company-id-check)
- [E-invoice recipient check](https://apino.sk/en/tools/e-invoice-check)