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Jp Social Insurance

by Mart402 in News & content

x402 APIPassing, checked 2 h ago

Japan social insurance premiums: monthly remuneration to grade + health/care/pension/employment premiums from the official Kyokai-Kenpo FY2026 grade table, all 47 prefectures, official rounding. $0.01/call.

POST https://mart402.com/v1/jp-social-insurance

Last 30 days

All checks passedSome failedAll failedNot checked
Uptime
100%
Response time
404 ms typical, 521 ms slowest 5%
Last check
2 h ago
Next check
any minute now

How to call it

# See the payment challenge (nothing is charged)
curl -i -X POST "https://mart402.com/v1/jp-social-insurance" \
  -H "content-type: application/json" \
  -d '{"age":35,"monthly_remuneration_yen":300000,"prefecture":"tokyo"}'
import { wrapFetchWithPayment } from "@x402/fetch";
import { x402Client } from "@x402/core/client";
import { ExactEvmScheme } from "@x402/evm/exact/client";
import { privateKeyToAccount } from "viem/accounts";

const client = new x402Client().register(
  "eip155:8453",
  new ExactEvmScheme(privateKeyToAccount(process.env.AGENT_KEY)),
);
const pay = wrapFetchWithPayment(fetch, client);

// Not sure it's safe to pay? Preflight it first for $0.005:
// GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fmart402.com%2Fv1%2Fjp-social-insurance
const res = await pay("https://mart402.com/v1/jp-social-insurance", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({"age":35,"monthly_remuneration_yen":300000,"prefecture":"tokyo"}),
});
console.log(await res.json());

Example input

{
  "age": 35,
  "monthly_remuneration_yen": 300000,
  "prefecture": "tokyo"
}

Example output

{
  "as_of": "2026-08-21",
  "assumptions": [],
  "billable": true,
  "breakdown": [],
  "carried_forward": [],
  "disclaimer": "仮定条件に基づく概算試算。税務相談・手続代行・法律相談ではない。申告・届出への使用不可。確定額は官公署または税理士・社会保険労務士等に確認のこと。",
  "not_covered": [
    "labor insurance の業種別特例(建設・農林以外)",
    "健康保険組合(協会けんぽ以外)",
    "厚生年金基金・企業年金",
    "国民健康保険・国民年金",
    "産休育休免除・随時改定(月変)・定時決定の細目"
  ],
  "note": "SAMPLE RESPONSE generated by the exact deterministic engine that serves production (jp-statutory has no LLM: same input always produces this byte-identical result, carrying the same rules_version and cited primary sources). Served free at /samples/{product} so you can verify the response shape, the rules_version field and the source citations before paying. No payment was taken. The sample_input shown is the catalog example input that produced this output.",
  "ok": true,
  "result": {
    "child_care_support_yen": 345,
    "employment_insurance_yen": 1500,
    "grade": 22,
    "health_yen": 14775,
    "long_term_care_yen": 0,
    "pension_standard_monthly_yen": 300000,
    "pension_yen": 27450,
    "rounding_mode": "deduct_from_salary",
    "standard_monthly_yen": 300000,
    "total_yen": 44070
  },
  "rules_version": "2026.08.18",
  "sample": true,
  "sample_input": {
    "age": 35,
    "monthly_remuneration_yen": 300000,
    "prefecture": "tokyo"
  },
  "sources": [
    "https://jsite.mhlw.go.jp/yamanashi-roudoukyoku/koyouhoken_R8.html",
    "https://www.kyoukaikenpo.or.jp/about/business/insurance_rate/rate_prefectures/r08/index.html",
    "https://www.kyoukaikenpo.or.jp/assets/R8_13tokyo.pdf",
    "https://www.nenkin.go.jp/service/kounen/hokenryo/ryogaku/ryogakuhyo/20200825.files/R08ryougaku.pdf"
  ],
  "summary": "報酬月額300,000円 -> 標準報酬月額300,000円(22等級)、本人負担合計44,070円/月",
  "tool": "jp-social-insurance",
  "unverified_rules": []
}

Security scan

  • No findings. We scan names, descriptions and tool definitions for hidden instructions and other prompt-injection patterns.

Recent checks

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