jobcheck

· 中文

Paste a job URL. In seconds, with no account, it tells you whether the employer legally exists, how long the ad has really been open, and whether you are about to apply to a ghost.

Facts, not a vibe score. Every other ghost-job tool reads the wording and guesses. jobcheck checks the things that can be checked: the company register, the posting date the board embeds, the age of the employer's domain, and whether you have seen this exact ad before.

npx skills add damonchandio/jobcheck -g

Works in Claude Code, Codex, Cursor, Gemini CLI, OpenCode, Copilot and any agent that reads SKILL.md. Or run it yourself:

python3 scripts/jobcheck.py https://example.com/jobs/123

GHOST (high confidence): Senior AI Engineer at Example Talent Ltd
  ✗ open for 94 days (schema.org datePosted)
  ✓ EXAMPLE TALENT LTD (12345678) is active, incorporated 2019-03-04
  ✓ example-talent.co.uk registered 2019-02-20 (2800 days ago)
  ✓ example-talent.co.uk can receive email
  ✗ seen 4 times since 2026-07-19
  → https://find-and-update.company-information.service.gov.uk/company/12345678

What I found when I pointed it at UK AI jobs

321 live UK AI and data job ads from 42 employers' own job boards (Greenhouse, Ashby, Lever), checked on 21 October 2026, using each board's first-published date:

Open for	Share of ads
30+ days	69%
60+ days	55%
90+ days	45%
6+ months	27%

Median: 70 days. 24 roles were live under two or more different links at the same time. Some long-open ads are genuine "always hiring" roles; the point is that you can't tell from the ad itself. Reproduce it with python3 evals/uk_ai_ads.py scan-history.tsv (career-ops format).

What it checks

Signal	Source	Counts against the ad when
Posting age	schema.org datePosted / validThrough, or "posted N days ago"	60+ days, or past its closing date
Employer	Companies House search and profile	not found, dissolved, in liquidation, or accounts / confirmation statement overdue
Domain age	RDAP registration date	under 180 days
Mail	MX record via DNS over HTTPS	the domain cannot receive email
Contact	reply addresses in the ad	on Gmail, Outlook, Yahoo and similar
Wording	fee, bank details before starting, chat-app-only contact, crypto pay, "always hiring", talent-pool language	weighted; 3+ points is a scam
Repost	local SQLite ledger keyed on employer + description	the same ad seen 3+ times

Verdicts: REAL, GHOST, SCAM, SUSPECT, UNVERIFIED. --json gives a fixed schema (verdict, confidence, signals[], evidence[]) so an application agent can gate on it. --card out.html writes a verdict card you can share.

Companies House key (optional, free)

The registry step needs a key. Get one in two minutes at developer.company-information.service.gov.uk, then:

export COMPANIES_HOUSE_API_KEY=your-key

Without it, jobcheck still reports posting age, domain, contact, wording and reposts, and marks the employer check as skipped.

When the page needs a login

LinkedIn and Indeed block anonymous fetches. Paste the text instead:

python3 scripts/jobcheck.py - --employer "Employer Ltd" < job.txt

Inside an agent that already has the page open, that is what the skill does automatically.

How it compares

	Checks the company register	Posting age from board data	Repost ledger	Runs locally, no account	Agent skill
jobcheck	yes (Companies House)	yes	yes	yes	yes
ghostjobs.net	no	crowd reports	no	hosted	no
Text-scoring extensions and scripts	no	sometimes	no	mostly	no
ai-job-search / career-ops	no	no	no	yes	yes (no verification step)

Limits

• UK employers only for the registry check. Charities, universities, the NHS, sole traders and non-UK companies are "not found", not fake.
• Agencies advertise under their own name. A "not found" on the agency's trading name is common; pass --employer with the legal name if you know it.
• Posting age needs a date on the page. Some boards show none.
• The repost ledger only knows what this machine has checked.
• A REAL verdict means the facts line up. It is not a promise the role will be filled, and it is not legal advice.

Tests

python3 -m unittest discover -s tests -v

18 tests, no network.

Why

I'm an AI engineer in West Yorkshire who was job hunting with an agent doing the legwork. It kept finding roles that had been open for months, or employers I couldn't find on Companies House. The agent needed a check it could run before applying. This is that check.

MIT. If it saves you an application, a ⭐ helps other people find it.