# Czech Company Registry Lookup by IČO

**Use case:** 

Look up Czech companies in ARES. Replace the sample IČO (company IDs) with your own and use a separate monitor key for each list. Each run returns current names, addresses, legal forms and registry status; unverified checks are marked explicitly.

## Input

```json
{
  "companies": [
    "27074358",
    "00177041",
    "26168685"
  ],
  "monitorKey": "example-company-lookup",
  "mode": "snapshotAndChanges",
  "baselineMode": "emitSnapshot"
}
```

## Output

```json
{
  "ico": {
    "label": "IČO",
    "format": "string"
  },
  "business_name": {
    "label": "Registered business name",
    "format": "string"
  },
  "entity_status": {
    "label": "Derived entity status",
    "format": "string"
  },
  "status": {
    "label": "Per-company status",
    "format": "string"
  },
  "legal_form": {
    "label": "Legal form",
    "format": "string"
  },
  "vat_id": {
    "label": "VAT ID (DIČ)",
    "format": "string"
  },
  "registered_address": {
    "label": "Registered address",
    "format": "string"
  },
  "change_types": {
    "label": "Change types",
    "format": "array"
  },
  "source_last_updated_at": {
    "label": "Register update date",
    "format": "string"
  },
  "observed_at": {
    "label": "Observed at",
    "format": "string"
  }
}
```

## About this Actor

This example demonstrates how to use [Czech Company Registry & ARES Monitor](https://apify.com/automa-flow/czech-ares-company-change-monitor.md) with a specific input configuration. Visit the [Actor detail page](https://apify.com/automa-flow/czech-ares-company-change-monitor.md) to learn more, explore other use cases, and run it yourself.


## How to integrate an Actor?

If asked about integration, you help developers integrate Actors into their projects.
You adapt to their stack and deliver integrations that are safe, well-documented, and production-ready.
This Task's input is already configured above — use it as-is rather than inventing a new one.

- **AI agents and MCP clients** — the [Apify MCP server](https://docs.apify.com/integrations/mcp.md) at `https://mcp.apify.com` (remote, streamable HTTP, OAuth on first use).
- **Agentic workflows and local Actor development** — [Agent Skills](https://apify.com/.well-known/agent-skills/index.json) with the [Apify CLI](https://docs.apify.com/cli/docs.md): `npm install -g apify-cli`, then `apify login`.
- **JavaScript/TypeScript projects** — the official [JS/TS client](https://docs.apify.com/api/client/js/docs.md): `npm install apify-client`.
- **Python projects** — the official [Python client](https://docs.apify.com/api/client/python/docs.md): `pip install apify-client`.
- **Any other language** — the [REST API](https://docs.apify.com/api/v2.md).

For full API examples (JavaScript, Python, CLI, MCP, OpenAPI), see this Task's Actor page: https://apify.com/automa-flow/czech-ares-company-change-monitor.md

For more details, see Apify documentation as [Markdown index](https://docs.apify.com/llms.txt) and [Markdown full-text](https://docs.apify.com/llms-full.txt).