Claude CodeでJobPosting構造化データを実装し、掲載期限まで検証する手順

{
  "@context": "https://schema.org/",
  "@type": "JobPosting",
  "title": "バックエンドエンジニア",
  "description": "<p>決済APIの開発を担当します。</p>",
  "datePosted": "2026-10-01",
  "validThrough": "2026-12-31T23:59:00+09:00",
  "employmentType": "FULL_TIME",
  "hiringOrganization": {
    "@type": "Organization",
    "name": "株式会社サンプル",
    "sameAs": "https://example.com"
  },
  "jobLocation": {
    "@type": "Place",
    "address": {
      "@type": "PostalAddress",
      "addressRegion": "東京都",
      "addressLocality": "渋谷区",
      "addressCountry": "JP"
    }
  },
  "baseSalary": {
    "@type": "MonetaryAmount",
    "currency": "JPY",
    "value": {
      "@type": "QuantitativeValue",
      "minValue": 5000000,
      "maxValue": 8000000,
      "unitText": "YEAR"
    }
  },
  "directApply": true
}

## 求人ページのJobPosting
- JSON-LDは求人データからオブジェクトを組み、JSON.stringifyで出力する
- 置くのは求人詳細ページだけ。一覧・検索結果ページには出さない
- employmentType は FULL_TIME / PART_TIME / CONTRACTOR / TEMPORARY /
  INTERN / VOLUNTEER / PER_DIEM / OTHER のみ。業務委託は CONTRACTOR とする
- validThrough は終了日の23:59:00+09:00。期限が不明な求人には出さない
- マークアップの職務名・給与は、ページ本文にも同じ表記で出す
- 完了条件: node scripts/check-jobposting.mjs <URL> がNG 0件で終わること

// scripts/check-jobposting.mjs
// node scripts/check-jobposting.mjs <URL|ファイル> [--today=YYYY-MM-DD]
import { readFileSync } from "node:fs";
 
const src = process.argv[2];
const todayArg = process.argv.find((a) => a.startsWith("--today="));
const today = todayArg ? new Date(todayArg.slice(8)) : new Date();
const html = /^https?:/.test(src)
  ? await (await fetch(src)).text()
  : readFileSync(src, "utf8");
 
const re = /<script[^>]*type="application\/ld\+json"[^>]*>([\s\S]*?)<\/script>/g;
const visible = html.replace(/<script[\s\S]*?<\/script>/g, "")
  .replace(/<[^>]+>/g, " ").replace(/\s+/g, " ");
const jobs = [];
let ng = 0, warn = 0;
const NG = (m) => { console.log("NG   " + m); ng++; };
const WARN = (m) => { console.log("WARN " + m); warn++; };
 
for (const m of html.matchAll(re)) {
  try {
    const j = JSON.parse(m[1]);
    for (const x of [j].flat()) if (x["@type"] === "JobPosting") jobs.push(x);
  } catch { NG("JSONとして読めないld+jsonがある"); }
}
if (jobs.length === 0) NG("JobPostingが見つからない");
if (jobs.length > 1) NG(`JobPostingが${jobs.length}件ある(1ページ1求人)`);
 
const ISO = /^\d{4}-\d{2}-\d{2}(T\d{2}:\d{2}(:\d{2})?(Z|[+-]\d{2}:\d{2})?)?$/;
const TYPES = ["FULL_TIME","PART_TIME","CONTRACTOR","TEMPORARY","INTERN",
               "VOLUNTEER","PER_DIEM","OTHER"];
const UNITS = ["HOUR","DAY","WEEK","MONTH","YEAR"];
 
for (const j of jobs) {
  for (const k of ["title","description","datePosted"]) if (!j[k]) NG(`${k} が無い`);
  if (!j.hiringOrganization?.name) NG("hiringOrganization.name が無い");
  const remote = j.jobLocationType === "TELECOMMUTE";
  if (!remote && !j.jobLocation) NG("jobLocation が無い");
  for (const loc of [j.jobLocation].flat().filter(Boolean))
    if (!loc.address?.addressCountry) NG("jobLocation.address.addressCountry が無い");
  if (remote && !j.applicantLocationRequirements && !j.jobLocation)
    NG("TELECOMMUTE なのに応募者の所在地条件も職場も無い");
  if (j.title && j.title === j.description) NG("title と description が同一");
  if (j.title && /[!*！＊]{2,}|\*\*\*/.test(j.title)) NG("title に記号の多用");
  if (j.title && !visible.includes(j.title)) NG("title がページ本文に見えない");
  if (j.datePosted && !ISO.test(j.datePosted)) NG("datePosted が ISO 8601 でない");
 
  if (!j.validThrough) {
    WARN("validThrough が無い(期限なしの求人でなければ設定する)");
  } else if (!ISO.test(j.validThrough)) {
    NG("validThrough が ISO 8601 でない");
  } else if (new Date(j.validThrough) < today) {
    NG(`validThrough ${j.validThrough} が過去(期限切れ: ページ削除かマークアップ削除)`);
  }
  if (j.datePosted && j.validThrough &&
      new Date(j.validThrough) < new Date(j.datePosted))
    NG("validThrough が datePosted より前");
 
  for (const t of [j.employmentType].flat().filter(Boolean))
    if (!TYPES.includes(t)) NG(`employmentType "${t}" は定義外(大文字小文字も区別)`);
 
  const s = j.baseSalary;
  if (s) {
    const v = s.value ?? {};
    if (!UNITS.includes(v.unitText)) NG(`unitText "${v.unitText}" は定義外`);
    if (v.value == null && (v.minValue == null || v.maxValue == null))
      NG("baseSalary に value も minValue/maxValue も無い");
    const n = v.value ?? v.minValue;
    const plain = visible.replace(/,/g, "");
    if (n != null && !plain.includes(String(n)))
      NG(`給与 ${n} がページ本文に見えない`);
  }
  if (j.directApply === undefined) WARN("directApply が無い(任意)");
}
console.log(`${jobs.length}件のJobPosting / NG ${ng} / WARN ${warn}`);
process.exit(ng ? 1 : 0);

1件のJobPosting / NG 0 / WARN 0
 
NG   jobLocation.address.addressCountry が無い
NG   title と description が同一
NG   title に記号の多用
NG   title がページ本文に見えない
NG   datePosted が ISO 8601 でない
NG   validThrough 2026-09-30 が過去(期限切れ: ページ削除かマークアップ削除)
NG   validThrough が datePosted より前
NG   employmentType "Fulltime" は定義外(大文字小文字も区別)
NG   unitText "year" は定義外
NG   給与 6000000 がページ本文に見えない
WARN directApply が無い(任意)
1件のJobPosting / NG 10 / WARN 1

NG   validThrough 2026-12-31T23:59:00+09:00 が過去(期限切れ: ページ削除かマークアップ削除)
1件のJobPosting / NG 1 / WARN 0