The WhatsApp OTP API enables seamless user authentication and transaction verification by sending OTPs directly to phone numbers. It receives a phone number and message content, then responds with a status and transaction ID. Ideal for user logins, transaction confirmations, and password resets, it offers substantial savings with plans starting at $24.99 for 2,500 OTPs. 🚀

Real-time OFAC sanctions screening and compliance verification.

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

"Effortlessly integrate the VISA Card Validation API for seamless and secure credit card validation in your applications."

"Effortlessly integrate the Payment Card Verification API for seamless and secure credit card validation in your applications."

The Secure Temporary Mail API a tool that generates temporary disposable emails, allowing users to protect their privacy and avoid spam while signing up for online services.

Send OTP and notifications to your users by email. Forget about configurations and records with this API.

"Mastercard Validation API ensures secure transactions by swiftly verifying Mastercard details, offering seamless integration and enhanced fraud prevention for businesses."

The Temporal Email Checker API confirms email authenticity by detecting temporary or disposable addresses, crucial for preventing spam and fraud.

This is a example to import APIs from Postman. The description must be at least 50 characters.

The Temporal Email Validation API verifies email legitimacy by identifying temporary or disposable addresses, crucial for preventing spam and fraud.

"Communication Authenticator API: Ensure email accuracy effortlessly. Confirm deliverability, syntax, and domain validity for seamless communication. Simplify your verification process."

This endpoint takes the information (string) as input, and provides the JWT-encoded result (string) as output. The output also includes a copy of the input, and a « status » value. Status is « Ok » or « Error: … ».

Generate tokens for your projects on the fly with this API. Generate unique tokens.

The Domain Availability Check API efficiently checks the availability of desired domain names instantly, simplifying registration for prompt and informed decisions.

FreeCustom.Email is a powerful API that enables users to generate temporary email addresses for seamless online registration and OTP testing. With its user-friendly interface, you can effortlessly create disposable email accounts to bypass spam and enhance privacy, while easily receiving one-time passwords and verification emails without any hassle. Ideal for developers and testers, this API ensures secure and anonymous interactions with online services.

License validation backend for Gumroad and direct software sellers. Verify keys, enforce activation limits, and prevent key sharing without building custom infrastructure.

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

Manage subscriptions effectively with our SaaS Licensing Control API for streamlined license verification and activation.

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

The Hashing API ensures string security effortlessly, offering top-notch methods such as SHA and MD5. Safeguard sensitive data with robust hashing techniques, providing a reliable layer of protection for your information.

Affordable Places API powered by Overture Maps. Find nearby places by coordinates, filter by category, get contact details — at 100x lower cost than Google Places. No usage surprises, predictable flat-rate plans. Perfect for startups and indie developers.

Unlock the power of secure data management with our Hashing Encryption and Decryption API. Safeguard your strings effortlessly by choosing from top-notch methods like SHA and MD5. Whether encrypting for confidentiality or decrypting for insight, our API ensures your data remains in your control, fortified with cutting-edge cryptographic techniques.

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

The Email Authenticator API ensures email authenticity by verifying format, domain existence, and temporary service status, bolstering communication reliability.

The Bank Routing Authenticator API enables users to confirm the validity of bank routing numbers.

Validate financial identifiers including EU VAT numbers against VIES, IBAN bank accounts with BIC lookup, credit and debit card numbers with Luhn check and issuer detection, and batch validation for processing multiple identifiers at once.

"Introducing the Credit Card Validation Check API your secure solution for swift and accurate verification of payment card authenticity."

Simplify age calculations for individuals or events, making age-related tasks more efficient while ensuring accurate date-based computations with ease.

The Domain Registry Validation API furnishes comprehensive domain registration details, empowering users to effortlessly access ownership information, contact details, and registration history.

Audit email authentication records for any domain. Checks SPF, DKIM, and DMARC configurations, validates DNS records, and identifies security vulnerabilities in email infrastructure.

The Temporary Gmail API allows you to create completely new, never-before-used email addresses with Gmail, providing a convenient solution for avoiding spam. Whether you need them for OTP confirmations, signing up on untrustworthy sites, or any other purpose, this service empowers you with the flexibility to manage your online privacy effortlessly.

The Domain Search Availability API offers swift, real-time checks for desired domain names, streamlining the registration process for quick and informed decisions.

The Domain Name Availability API swiftly checks domain name availability, streamlining online presence management and securing the right virtual addresses.

Run automated WCAG accessibility audits on any web page. Detects violations, warnings, and best practices for ADA and EAA compliance.

EU-Compliance: Digital Product Passport (DPP) Immutable QR Engine. Guaranteed 10-year URL persistence for Textile and Battery ESPR mandates (March 2026). High-error-correction QR generation optimized for industrial label printing. Frankfurt (EU-Central) data residency.

"The Temporal Email Verification API ensures email legitimacy by identifying temporary or disposable addresses, vital for spam and fraud prevention."

ChainAware API provides blockchain fraud detection, wallet risk scoring, rug pull analysis and segmentation services through secure authenticated endpoints.

Safeguard your business with our Credit Card Verification API, designed to secure sensitive information and prevent breaches.

The Domain Availability API provides rapid, real-time checks for preferred domain names, simplifying the registration process to enable prompt and well-informed decisions.

The One Time Links API enables developers to easily generate secure, time-limited URLs for sharing information and resources. This powerful tool ensures that each link is unique and can only be accessed for a limited duration, enhancing privacy and security in link sharing.

Verifies BIN numbers and returns card brand, type, level, issuing bank name, country, and essential contact information instantly.

Secure your retail operations with the Card Authenticator API, validating customer creditworthiness for informed decisions.

Elevate your financial transactions with our Payment Card Validator API, guaranteeing safety and reliability for all online payments.

Build confidence in your transactions with our Card Number Verifier API, providing detailed evaluations of vendor reliability.

Enhance your security with our Card Verification API, designed for real-time fraud detection and user authentication.

Retrieve comprehensive Aadhaar details swiftly, making identity verification seamless with our easy-to-use API.

Our API offers an advanced solution designed for tracking cryptocurrency portfolio balances across a wide range of Ethereum Virtual Machine (EVM) compatible networks.