Japan back-office APIs you can buy with a card.
Start with JP Local Pack for payroll, invoice issuer lookup, tax rates, holidays, social insurance, and corporate lookup. Free preview is available before purchase.
JP Local Pack is live on RapidAPI — buy with card or API key. One public marketplace listing covers all current products. Free preview available for all products.
JP Local Pack is live for card/API-key purchase.
Buyable today
JP Local Pack is live for card/API-key purchase on RapidAPI — no crypto required. Subscribe once and call from any HTTP client.
1
Card purchase live
JP Local Pack
Japan payroll, invoice, tax, holiday, and corporate-lookup numbers without scraping NTA, gBizINFO, MHLW, or Cabinet Office.
Get clean Japan payroll deductions, social-insurance grades, consumption-tax rates, national holidays, and corporate-number lookups in one call.
Pricing: $0.001 to $0.020 per call.
Example output free preview
Japan monthly payroll combo: deductions + social insurance + holiday + tax in one call..
{
"monthly_salary": 300000,
"payroll": {
"health_insurance_employee": 14775,
"pension_employee": 27450,
"employment_insurance_employee": 1500,
"income_tax_withholding": 6220,
"total_deduction": 52720,
"net_salary": 247280
},
"month_context": { "year_month": "2026-05", "business_days": 18, "national_holidays": 4 },
"_version": "1.7.5"
}
x402 direct production endpoint (for agent-native payment): https://api.kasanegi.com/v1/local/combined/payroll-summary?monthly_salary=300000&year_month=2026-05
What we do not promise
- Sources are public official or public-registry sources only (J-Grants, gBizINFO, EDINET, NTA, Cabinet Office, MHLW, Kyokai Kenpo). No private or pre-disclosure data.
- Outputs are reference data or review-required candidates. We do not give legal, payroll, KYB, tax, or grant-eligibility final decisions.
- Builder: Kasanegi.
https://api.kasanegi.com is the single buyer integration target.
Questions or problems? Email contact@kasanegi.com.
Sales channels
x402 is one option, not the only one. Production access is not gated on holding crypto.
- Marketplace / API-key path — buy through a marketplace listing (RapidAPI-class provider proxy) when that product has a public listing. Pay by card or platform credit, no crypto required. Origin route:
https://api.kasanegi.com/marketplace/rapidapi/v1/{local}/.... Status: Public marketplace listing live for all current products at https://rapidapi.com/kasanegi123/api/jp-local-pack-japan-payroll-invoice-tax-apis..
- x402 direct micropayment — settle USDC on Base mainnet per call, for agent-native buyers. Origin route:
https://api.kasanegi.com/v1/{local}/....
- Card / fiat checkout (Stripe / Polar / equivalent) — not yet wired. Owner must create the merchant account and configure pricing.
- Wallet-free preview —
https://api.kasanegi.com/preview/v1/{local}/.... Same JSON shape as paid path; for evaluation only, not a paid path.
Full machine manifest with per-channel status: /products (sales_channels) and /.well-known/broker-manifest.json.
For developers and agents
If you would rather meter against a free trial, get a wallet-free key:
curl -sS -X POST https://api.kasanegi.com/keys/create \
-H "content-type: application/json" \
-d '{"owner_label":"my-team"}'
curl -sS -X POST https://api.kasanegi.com/broker/call \
-H "X-API-Key: <key>" \
-H "content-type: application/json" \
-d '{"product_id":"jp-local-pack-v1-combined-payroll-summary","query":{"monthly_salary":300000,"year_month":"2026-05"}}'
Machine-readable surfaces: