# Toll402 ABN Validator (Australia)

> Toll402 ABN Validator (Australia) is a paid API for AI agents from toll402.dev, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-10).

Validates an Australian Business Number (ABN) for correct format and check digit, returning a pass/fail result.

## Facts

- Endpoint: POST https://toll402.dev/v1/t/abn_au_validate?utm_source=zero.xyz
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-10
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/toll402-abn-validator-australia-7b896b98
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_b_jngg6li-FvwFaDgPmF-

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 toll402-abn-validator-australia-7b896b98 -d '<json body>'
```

Example prompt: Can you check if this Australian Business Number is valid: 51 824 753 556?

## When to prefer this

Choose this endpoint when you need a fast, cheap, offline ABN format and check-digit validation without requiring a live ABN lookup against the Australian Business Register. Ideal for pre-submission validation, onboarding flows, or data cleansing where real-time registry confirmation is not required. At $0.001 per call via x402 USDC, it suits high-volume validation pipelines without API key management overhead.

## Known failure modes

- Malformed input (non-numeric characters beyond spaces) may return ok: false or an error
- ABNs with incorrect length return a validation failure
- Network or gateway errors return HTTP 4xx/5xx from Toll402
- Payment failure via x402 results in HTTP 402 with no validation performed

## 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 JSON object with an `ok` boolean field indicating whether the supplied ABN passes format and check-digit validation. No external lookup is performed; this is an offline algorithmic check.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method",
    "bodyType",
    "body"
   ],
   "properties": {
    "body": {
     "type": "object",
     "required": [
      "abn"
     ],
     "properties": {
      "abn": {
       "type": "string",
       "description": "ABN, with or without spaces"
      }
     }
    },
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "POST"
     ],
     "type": "string"
    },
    "bodyType": {
     "enum": [
      "json",
      "form-data",
      "text"
     ],
     "type": "string"
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "ok": true
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/toll402-abn-validator-australia-7b896b98/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)