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AgentStall ZA – South African Tax Number Validator
x402
AgentStall ZA – South African Tax Number Validator is a paid API for AI agents from agentstall.nilesh-b54.workers.dev, paid per call via x402, $0.002/call, status unknown (last checked 2026-11-02).
Validates a South African VAT or income tax reference number and returns the type and normalized form
Price / call$0.002
Success—
StatusUnknown
How this service works
South African tax number validation: checks a 10-digit SARS VAT registration number or income tax reference number (format and modulus-10 check digit) and says which type it is. Format check only, not a SARS registration lookup; nothing is stored. Useful for invoices, supplier onboarding and form validation.
Output
A JSON object containing: 'type' (e.g. 'income tax reference number' or 'VAT'), 'valid' (boolean indicating whether the number passes SARS format rules), and 'normalized' (the canonical digit-only form of the number, e.g. '0001339050'). Spaces, dashes, and slashes in the input are stripped before validation.
Example use cases
Supplier VAT verification before payment
“Before we pay this South African supplier, can you check whether their VAT number 4123456789 is actually valid according to SARS?”
Onboarding form tax number check
“A new client filled in their income tax reference number as 001-133-9050 — can you validate it and give me the clean normalized version?”
Automated compliance pre-screening
“We're about to submit a tender and need to confirm our company's SARS tax number 0001339050 is valid and correctly formatted before we include it in the documents.”
Technical details
Endpoint
GEThttps://agentstall.nilesh-b54.workers.dev/v1/validate-tax-number?utm_source=zero.xyzWhen to prefer
Use this endpoint when you specifically need to validate or normalize South African tax numbers (SARS VAT or income tax reference numbers) as part of a ZA-focused compliance, onboarding, or procurement workflow. It is purpose-built for the South African tax number format rules, unlike generic regex checks or international tax validators that don't understand SARS-specific formats. Prefer it over manual checks when automating supplier onboarding, tender submissions, or invoice processing in South Africa.
Side effects
- Missing 'number' query parameter returns a 400 or error response
- Unpaid call (no x402 payment header) returns HTTP 402 with PAYMENT-REQUIRED header
- Malformed or unrecognizable number format returns valid:false with no normalized form
- Network timeout on the Cloudflare Worker edge node
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"type": "income tax reference number",
"valid": true,
"normalized": "0001339050"
}
}Tags
x402
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