# JP Invoice Issuer Registration Lookup

> JP Invoice Issuer Registration Lookup is a paid API for AI agents from jp-local-pack-api.kasanegi123.workers.dev, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-14).

Looks up a Japanese qualified invoice issuer registration number (T-number) against the NTA public registry to verify registration status, name, address, and registration details.

## Facts

- Endpoint: GET https://jp-local-pack-api.kasanegi123.workers.dev/api/invoice/issuer-registration-lookup
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/jp-invoice-issuer-registration-lookup-1df8559b
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_kR5uZ4Q0RNpZtOpZie_Np

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 jp-invoice-issuer-registration-lookup-1df8559b
```

Example prompt: Can you check whether T1234567890123 is a valid and active qualified invoice issuer in Japan's NTA registry, and tell me the registered company name and address?

## When to prefer this

Use this endpoint when you need to programmatically verify the qualified invoice issuer status of a Japanese business entity as required under Japan's Adapted Invoice System (invoicing kakutei system), especially for automated accounts payable, supplier onboarding, or tax compliance workflows. Prefer over manual NTA portal lookups when integrating into agent-based or automated accounting systems.

## Known failure modes

- T-number not found in NTA registry — returns found: false
- Invalid T-number format (not T followed by 13 digits) — likely returns error or not found
- Payment not made (no X-PAYMENT header) — returns 402 with shape preview containing placeholder values
- NTA upstream registry temporarily unavailable — may return stale or error response
- Registration cancelled or inactive — returns found: true but active: false

## How this service works

Japan payroll / tax / social insurance / mynumber / corporate / invoice / holiday reference API for AI agents. x402 micropayments on Base. No API key.

## Output

Returns the registered business name, T-number, address, registration status (registered/cancelled), registration date, process type (e.g. new_registration), kind label (e.g. corporation), and source last update date sourced from the NTA qualified invoice issuer public download registry.

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "name": "<NTA registered name>",
  "_role": "shape_preview_echoes_query_for_paid_response",
  "found": true,
  "active": true,
  "number": "T<13-digit>",
  "address": "<NTA registered address>",
  "process": "01",
  "kind_label": "corporation",
  "attribution": "Source: NTA qualified invoice issuer publication system public download registry.",
  "update_date": "<YYYY-MM-DD>",
  "_sample_note": "Unpaid 402 shape preview echoes the requested number shape; paid 200 verifies it against the NTA qualified invoice issuer public download registry.",
  "process_label": "new_registration",
  "source_status": {
   "status": "live",
   "upstream": "nta_invoice_kohyo_download_registry",
   "response_format": "kv_ndjson",
   "history_included": false
  },
  "registration_date": "<YYYY-MM-DD>",
  "_shape_preview_note": "Numeric fields in this unpaid 402 shape preview are 0 placeholders. Real values require X-PAYMENT on production.",
  "registration_status": "registered",
  "source_last_update_date": "<YYYY-MM-DD>"
 },
 "mimeType": "application/json"
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/jp-invoice-issuer-registration-lookup-1df8559b/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from jp-local-pack-api.kasanegi123.workers.dev](https://www.zero.xyz/host/jp-local-pack-api.kasanegi123.workers.dev/llms.txt)