# Saudi VAT Number Validator

> Saudi VAT Number Validator is a paid API for AI agents from toll402.dev, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-02).

Validates a Saudi Arabian VAT number offline, checking format and check digit correctness.

## Facts

- Endpoint: POST https://toll402.dev/v1/t/vat_sa_validate?utm_source=zero.xyz
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-02
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/saudi-vat-number-validator-fe764c42
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_C-ufggSKwO9KtPDkQUSP7

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability saudi-vat-number-validator-fe764c42 -d '<json body>'
```

Example prompt: Can you check if this Saudi VAT number is valid: 300000000000003?

## When to prefer this

Use this endpoint when you need fast, offline, per-call validation of Saudi VAT numbers without building your own validation logic. It is ideal for invoice processing pipelines, supplier onboarding flows, or data quality checks where you pay only per call with no signup or API key required. Prefer this over manual regex checks when you need authoritative check-digit validation.

## Known failure modes

- Input missing or empty string returns validation error
- Non-numeric or incorrectly formatted input (not 15 digits) returns invalid result
- Check digit mismatch causes invalid result with explanation
- Network or payment failure returns HTTP 402 or 5xx error

## How this service works

The OpenRouter for AI-agent tools: one gateway, one wallet, every capability. Built-in tools, forged tools, a global verified business directory and 2,000+ aggregated x402 services, all paid per call in USDC via x402 (HTTP 402). No signup, no API key.

## Output

Returns a validation result indicating whether the Saudi VAT number is valid or invalid, along with an error message or reason if the number fails validation (e.g. wrong length, bad check digit, invalid format).

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "value"
 ],
 "properties": {
  "value": {
   "type": "string",
   "description": "Saudi VAT number, e.g. 300000000000003"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/saudi-vat-number-validator-fe764c42/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from toll402.dev](https://www.zero.xyz/host/toll402.dev/llms.txt)