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Best otp APIs

WhatsApp OTP API

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. 🚀

Communication & Messaging

100% uptime 136ms avg MCP ready

Random Users Generator API

Get your databases and applications enriched with this user generator. Get useful information to start testing your websites or products.

Market Data & Trading Free 7-Day Trial

100% uptime 153ms avg MCP ready

Part-Of-Speech Tagging API

This API will help you tag different parts of any speech provided. Tags the provided text with parts of speech (such as nouns, verbs, adjectives, adverbs, etc.)

Natural Language Processing (NLP) Free 7-Day Trial

100% uptime 176ms avg MCP ready

API BUSCA CPF

Busca de CPF, Nome completo, Data de Nascimento, Sexo, Óbito, Nome Da Mãe e Pai entre outros.

Company Data

100% uptime 419ms avg MCP ready

Test User Creation API

"Elevate applications and simulations with a versatile, randomized user profile generator for authentic testing and development."

Tools & Utilities Free 7-Day Trial

100% uptime 251ms avg MCP ready

FreeCustomEmail - Temp Email and OTP Testing API

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.

Communication & Messaging Free 7-Day Trial

100% uptime 398ms avg MCP ready

Digital Character Creator API

Digital Character Creator API: Create varied, randomized user profiles to improve realistic testing and development, thereby enhancing applications and simulations.

AI & Machine Learning Free 7-Day Trial

100% uptime 299ms avg MCP ready

Digital Product Passport API

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.

Legal & Compliance Free 7-Day Trial

100% uptime 524ms avg MCP ready

Instant CPF Brazil API

Get rapid CPF data verification at your fingertips with our Instant CPF API, perfect for dynamic applications.

Legal & Compliance Free 7-Day Trial

100% uptime 45ms avg MCP ready

Virtual User Creator API

Virtual User Creator API: Generate diverse, randomized user profiles for realistic testing and development, enhancing applications and simulations

Tools & Utilities Free 7-Day Trial

100% uptime 345ms avg MCP ready

IP VPN Connection Validator API

Confirm VPN connections effortlessly using the IP VPN Connection Validator API for peace of mind.

Security & Cybersecurity Free 7-Day Trial

100% uptime 19ms avg MCP ready

IP VPN Status Fetcher API

Monitor VPN status efficiently with the IP VPN Status Fetcher API—ensure smooth connectivity.

Security & Cybersecurity Free 7-Day Trial

100% uptime 21ms avg MCP ready

PseudoIdentity Generator API

The PseudoIdentity Generator API creates authentic simulated personal data, aiding application testing, development, and privacy compliance.

Legal & Compliance Free 7-Day Trial

100% uptime 413ms avg MCP ready

The Username Generator API

This API is a powerful and versatile tool that allows developers to easily integrate a unique and randomized username generation feature into their applications.

Tools & Utilities Free 7-Day Trial