ToolVet

Identifier Validators

9 x402 APIs served from id-validators.x402tookit.com

Every listing from Identifier Validators that ToolVet tracks. Each one is called on a schedule without paying and scored out of 100.

At a glance

Listings
9 x402 APIs
Passing at the latest check
6 of 9
Uptime, 30 days
58.1% on average across 9 listings
Price
$0.02 per call
Trust score
32 to 61, median 59
Paying wallets, 30 days
No usage data
Verified owner
None
Security findings
None found
Listed since
20 Oct 2026

No usage data. The x402 Bazaar reports paying wallets for the x402 APIs it lists; MCP servers and APIs submitted directly have none.

All 9 listings

Ranked by trust score.

  • 61trust
    Issn CheckIdentifier Validators

    Validate an ISSN (journal or serial number) check digit and format it with the hyphen.

    x402 APIOther
    $0.02per call on Polygon
    64.3% uptime, 521 msPassing, checked 6 h ago
  • 61trust
    Isin CheckIdentifier Validators

    Validate a securities ISIN check digit and split it into country code and national security number.

    x402 APISecurity & trust
    $0.02per call on Polygon
    64.3% uptime, 519 msPassing, checked 5 h ago
  • 61trust
    Isbn CheckIdentifier Validators

    Validate an ISBN-10 or ISBN-13 check digit and convert between the two forms.

    x402 APIDocuments & files
    $0.02per call on Polygon
    63.2% uptime, 523 msPassing, checked 10 h ago
  • 60trust
    Gtin CheckIdentifier Validators

    Validate a UPC-A, EAN-8, EAN-13 or GTIN-14 barcode check digit and name its format.

    x402 APIOther
    $0.02per call on Polygon
    60.0% uptime, 519 msPassing, checked 4 h ago
  • 59trust
    Cusip CheckIdentifier Validators

    Validate a 9-character CUSIP security identifier check digit and split issuer and issue codes.

    x402 APISecurity & trust
    $0.02per call on Polygon
    56.3% uptime, 523 msPassing, checked 3 h ago
  • 58trust
    Orcid CheckIdentifier Validators

    Validate an ORCID iD (researcher identifier) with its ISO 7064 check character and give the canonical form.

    x402 APIOther
    $0.02per call on Polygon
    53.3% uptime, 512 msPassing, checked 9 h ago
  • 34trust
    Vin CheckIdentifier Validators

    Validate a 17-character vehicle VIN check digit and decode region, manufacturer code and model-year candidates.

    x402 APIAI models & inference
    $0.02per call on Polygon
    57.9% uptime, 516 msFailing, checked 25 h ago
  • 33trust
    Lei CheckIdentifier Validators

    Validate a 20-character Legal Entity Identifier with the ISO 7064 mod 97-10 check and split its parts.

    x402 APIOther
    $0.02per call on Polygon
    53.9% uptime, 520 msFailing, checked 21 h ago
  • 32trust
    Mac ParseIdentifier Validators

    Parse a MAC address in any common notation: canonical forms, OUI, unicast or multicast, universal or local.

    x402 APIDocuments & files
    $0.02per call on Polygon
    50.0% uptime, 505 msFailing, checked 24 h ago

Watch these listings in one feed

How these numbers are made

Each listing is called on a schedule without paying. Listings with usage or a verified owner are checked about every 30 minutes, others about every 6 hours. Uptime is the share of passing checks over 30 days, averaged across this provider's listings. Trust scores follow the published method. The figures on this page can be a few minutes behind the latest checks, and listings hidden after review aren't counted.