# TR Vergi-No Validator API — VKN & TCKN (`caulleonard/vergi-no-validator`) Actor

Türkiye VKN (vergi kimlik no, 10 hane) ve TCKN (11 hane) checksum doğrulama API'si. ISO standart algoritmalar, milisaniyede yanıt. KVKK-safe: yalnızca matematiksel doğrulama, kişi sorgusu/saklama/echo yok.

- **URL**: https://apify.com/caulleonard/vergi-no-validator.md
- **Developed by:** [Fatih Şahinbaş](https://apify.com/caulleonard) (community)
- **Categories:** Developer tools, Other
- **Stats:** 1 total users, 1 monthly users, 100.0% runs succeeded, 0 bookmarks
- **User rating**: No ratings yet

## Pricing

from $1.00 / 1,000 tax-id validation requests

This Actor is paid per event and usage. You are charged both the fixed price for specific events and for Apify platform usage.

Learn more: https://docs.apify.com/platform/actors/running/actors-in-store#pay-per-event

## What's an Apify Actor?

Actors are web data automations that power AI and operations. They run on the Apify platform to scrape websites, process data, connect APIs, and automate workflows.
In Batch mode, an Actor accepts a well-defined JSON input, performs an action which can take anything from a few seconds to a few hours,
and optionally produces a well-defined JSON output, datasets with results, or files in key-value store.
In Standby mode, an Actor provides a web server which can be used as a website, API, or an MCP server.
Actors are written with capital "A".

## 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.
The best way to integrate Actors is as follows.

- **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 usage examples, see the [API](#api) section below.

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).

# README

## Turkish Tax Number Validator API — VKN & TCKN Checksum

The **Turkish Tax Number Validator API** validates **VKN** (10-digit company tax numbers) and **TCKN** (11-digit national ID numbers) using their official checksum algorithms. It is **KVKK-safe by design**: TCKN is accepted via POST body only and is never echoed back in the response.

### What the tax number validator checks

- **VKN** — 10-digit Turkish tax identification number checksum.
- **TCKN** — 11-digit Turkish national ID number checksum (digit-sum rules).

### API usage

VKN (safe to send as a query):

```
GET /validate?vkn=1234567890
```

TCKN (POST body only, for privacy):

```
POST /validate-tckn
{ "tckn": "10000000146" }
```

The response returns validity and the detected number type, with no personal data retained.

### Use cases

Validate tax and ID numbers in B2B onboarding, invoicing, and e-commerce checkout flows, catching typos before they reach your accounting or e-invoice systems.

### Pricing

Pay-per-event: **$0.001 per API call**.

### Related validation APIs

- [IBAN Validator API (ISO 13616)](https://apify.com/caulleonard/iban-validator)
- [e-Fatura Validator API (UBL-TR)](https://apify.com/caulleonard/efatura-validator)
- [Turkish GTIP / HS Code Lookup API](https://apify.com/caulleonard/gtip-hs-code-lookup)

### Notes

This Actor performs offline checksum validation only. A valid result means the number is well-formed; it does not confirm registration with any authority.

# Actor input Schema

## `value` (type: `string`):

Standby modda POST /vkn veya POST /tckn ile cagrilir (bu input standard run icindir)

## Actor input object example

```json
{}
```

# API

You can run this Actor programmatically using our API. Below are code examples in JavaScript, Python, and CLI, as well as the OpenAPI specification and MCP server setup.

## JavaScript example

```javascript
import { ApifyClient } from 'apify-client';

// Initialize the ApifyClient with your Apify API token
// Replace the '<YOUR_API_TOKEN>' with your token
const client = new ApifyClient({
    token: '<YOUR_API_TOKEN>',
});

// Prepare Actor input
const input = {};

// Run the Actor and wait for it to finish
const run = await client.actor("caulleonard/vergi-no-validator").call(input);

// Fetch and print Actor results from the run's dataset (if any)
console.log('Results from dataset');
console.log(`💾 Check your data here: https://console.apify.com/storage/datasets/${run.defaultDatasetId}`);
const { items } = await client.dataset(run.defaultDatasetId).listItems();
items.forEach((item) => {
    console.dir(item);
});

// 📚 Want to learn more 📖? Go to → https://docs.apify.com/api/client/js/docs

```

## Python example

```python
from apify_client import ApifyClient

# Initialize the ApifyClient with your Apify API token
# Replace '<YOUR_API_TOKEN>' with your token.
client = ApifyClient("<YOUR_API_TOKEN>")

# Prepare the Actor input
run_input = {}

# Run the Actor and wait for it to finish
run = client.actor("caulleonard/vergi-no-validator").call(run_input=run_input)

# Fetch and print Actor results from the run's dataset (if there are any)
print("💾 Check your data here: https://console.apify.com/storage/datasets/" + run["defaultDatasetId"])
for item in client.dataset(run["defaultDatasetId"]).iterate_items():
    print(item)

# 📚 Want to learn more 📖? Go to → https://docs.apify.com/api/client/python/docs/quick-start

```

## CLI example

```bash
echo '{}' |
apify call caulleonard/vergi-no-validator --silent --output-dataset

```

## MCP server setup

```json
{
    "mcpServers": {
        "apify": {
            "command": "npx",
            "args": [
                "mcp-remote",
                "https://mcp.apify.com/?tools=caulleonard/vergi-no-validator",
                "--header",
                "Authorization: Bearer <YOUR_API_TOKEN>"
            ]
        }
    }
}

```

## OpenAPI specification

Download the OpenAPI definition: https://api.apify.com/v2/actors/Y4eijViVbhDcAnisL/builds/L5iHla813NKKaxF6Y/openapi.json