Validate and score email addresses in real time — syntax, domain/MX, disposable, role-based and typo detection. Every check except SMTP, in a single fast call.

Validate and score email addresses in real time — syntax, domain/MX, disposable, role-based and typo detection. Every check except SMTP, in a single fast call.

License verification API for validating license keys, enforcing activation limits, and preventing key sharing for software, SaaS, plugins, and desktop apps.

Check up to fifty addresses per call, or extract every link of a page and validate each one: status code, redirect chain, response time and a working or broken summary. Smart checking with automatic fallback.

Universal JSON Fix repairs broken or malformed JSON, especially from LLMs like ChatGPT, Claude, Deepseek, Gemini, or Llama. This API ensures reliable parsing by fixing mixed quotes, missing commas, and formatting issues, making it ideal for AI applications.

The Language Checker API identifies the language of a text quickly and accurately, facilitating content customization and translation.

Simplify your licensing process with our Cloud License Management API for efficient license verification and activation.

Optimize software ownership with our Software Licensing Solutions API for reliable license verification and activation.

Safeguard digital products with our Digital Product Security API for robust license verification and activation.

Validate license keys quickly with our License Key Validation API for enhanced software security and user control.

Protect your revenue with our Key Sharing Prevention API, ensuring secure license verification and activation processes.

Keyless Nigeria NRS (ex-FIRS) e-invoice validator: official UBL 2.1 XSD, Peppol BIS base rules, Nigerian TIN on both parties, per-line VAT, IRN/CSID/QR clearance blocks. Rule-coded JSON report.

Keyless Malaysia MyInvois (LHDN) e-invoice validator: official UBL 2.1 XSD, code lists, totals math, XAdES signature check. POST XML or JSON, get a rule-coded JSON report. No LHDN account.

This API verifies SSL certificates from any website and returns their validity, dates, issuer, protocol, fingerprints, and authorized domains.

Validate structured data markup on any web page including JSON-LD, Microdata, and RDFa. Detects Schema.org types, checks for errors, and returns detailed validation results.

The DNS Checker Information API verifies DNS records for any domain and record type, providing fast, accurate and globally updated results.

The Linguistic Detector API reliably identifies the language of text, offering immediate multilingual support to enhance user interactions, ensure content moderation, and bolster global applications.

Quickly confirm domain availability with our API. Effortlessly find the perfect domain name for your website or business.

Check domain availability instantly with our API. Find the perfect domain name for your website or business effortlessly.

The Lite Phishing Checker API is a powerful tool that allows you to check URLs and determine if they are known phishing attempts. With this API, you can easily validate and safeguard against potential phishing threats by quickly identifying suspicious URLs.

JSON Clean API converts JSON documents into a readable format with line breaks and indentations. It supports entries up to 200,000 characters.

Extracts and validates JSON-LD, Microdata, RDFa, and structured markup from webpages or raw HTML for SEO and technical validation.

Checks translated JSON, localization strings, placeholders, ICU messages, missing keys, extra keys, empty values, untranslated values, and multi-locale consistency.

Stay ahead of Local Law 97 regulations across multiple cities with our compliance-focused API.

AI-powered Jewish content moderation API. Analyzes text across 7 Halachic compliance categories using Torah, Talmud, and Shulchan Aruch. Returns compliance score, severity level, and rabbinical notes.