EU VAT Number Validator API

andok/eu-vat-validator

Validate EU VAT numbers in bulk against the official VIES database. Extract company name, address & VAT status. Pay per validation, no subscription.

Email Validator Pro — Bulk SMTP & Deliverability Check

accurate_pouch/email-validator

Validate emails in bulk with SMTP mailbox check, disposable detection, catch-all flagging, deliverability scoring, and typo suggestions. 20 emails free per run.

Google Trends Scraper ($1.50/1K keywords)

mathtec/google-trends

Google Trends data for any keywords: interest over time, interest by region, related queries and topics, for any country, time range, category and Google property (web, YouTube, news, images, shopping). Compare up to 5 keywords. Failed keywords are free.

GTIN / EAN / UPC Barcode Validator — Check Digit + GS1 Prefix

caulleonard/gtin-barcode-validator

Validate GTIN-8, UPC-A, EAN-13 and GTIN-14 barcodes via the GS1 mod-10 check digit. Returns format, expected check digit, and the GS1 prefix's Member Organisation. Fast Standby API, no login.

XRechnung & ZUGFeRD Invoice Validator API

kamerozkan/xrechnung-xml-batch-validator-api

Validate XRechnung 3.0.x XML and ZUGFeRD 2.5 or Factur-X 1.09 XML/PDF with pinned rules and structured findings. Batch e-invoice validation and E-Rechnung Prüfung for accounts payable automation, Steuerberater workflows, ERP and einvoice pipelines via API, n8n, Make, or MCP agents.

XML to JSON Converter

rainminer/xml-to-json-converter

Parse XML documents to structured JSON. Accepts a URL or raw XML string. Automatically unwraps repeated elements into individual dataset rows. Built for AI agents and data pipelines.

API Specification Validator checks OpenAPI 3.x specs and detects drift between documented API paths and Apify JS/Python client SDKs. It outputs structured findings, severity labels, path counts, and full JSON reports for CI/CD and API governance.

Validate EU VAT numbers in bulk against the European Commission's VIES service: valid/invalid, registered business name and address (where the member state provides it), request timestamp for audit trails.

Email Address Validator

api-ninja/email-address-validator

✅ Validate email lists with a two-step verification pipeline: regex structure check followed by internal 2-step validation. Perfect for CRM cleanup, lead qualification, and campaign hygiene.

Bulk Email Verifier, Validate and Clean Lists

thoob/email-validator

Validates a list of email addresses: practical RFC 5322 syntax, live domain mail-capability (MX/A over DNS-over-HTTPS), disposable-domain detection, and role-account flags. Honest scope: it checks the address and the domain, not the mailbox. Billed only per address checked.