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Toll402 Japan Invoice Number Validator
x402
Toll402 Japan Invoice Number Validator is a paid API for AI agents from toll402.dev, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-14).
Validates a Japanese invoice registration number (qualified invoice issuer number) and returns its verification status
Price / call$0.001
Success—
StatusUnknown
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 the validation result for the Japanese invoice registration number, including whether the number is valid, properly formatted, and registered under Japan's qualified invoice issuer system (インボイス制度). May include issuer name, registration status, and registration details.
Example use cases
Supplier invoice compliance check
“I just received an invoice from a Japanese supplier with registration number T3012345678901 — can you verify it's a valid qualified invoice issuer number before we process payment?”
Accounting system onboarding validation
“We're adding a new Japanese vendor to our books with invoice number T1234567890123. Can you validate that registration number is legitimate?”
AP audit invoice number verification
“Our auditor flagged invoice registration number T9000056789012 from a Japanese contractor — can you check if it's actually registered in the qualified invoice system?”
Technical details
Endpoint
POSThttps://toll402.dev/v1/t/invoice_no_jp_validateWhen to prefer
Use this endpoint when you need to programmatically verify Japanese invoice registration numbers (T-numbers) for tax compliance, accounts payable workflows, vendor onboarding, or audit purposes without requiring a separate API key or subscription. Ideal for AI agents handling Japanese business transactions that need pay-per-call validation.
Side effects
- Invalid format — number does not match expected T-prefixed numeric pattern
- Unregistered number — properly formatted but not found in the registry
- Missing required field — value parameter not provided
- Network or upstream registry unavailable — external Japanese tax authority data source unreachable
- Payment failure — insufficient USDC balance for x402 per-call payment
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| valuerequired | string | Invoice registration number, e.g. T7000012050002 |
Tags
x402
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