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Device Model Lookup DKIM Check Security Score Card Verification Card Authentication Content Authenticity Recommendations SSL Metadata HTTP Audit Global Suppliers Subscription Management Verification Product Categories AI Text Detection DMARC Check Device Status Check Credit Email Financial Verification AI Content Verification

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Best authentication APIs

Email Authentication Checker API

Communication & Messaging

Ensure swift and precise validation of email addresses using our Email Authentication Checker API, enhancing communication reliability.

Free 7-Day Trial

100% uptime 96ms avg MCP ready

Content Origin Authentication API

Natural Language Processing (NLP)

The Content Origin Authentication API ensures transparency and trust in textual communication by verifying if the text is AI-generated.

Free 7-Day Trial

100% uptime 533ms avg MCP ready

Card Authentication API

Finance & Payments

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

Free 7-Day Trial

100% uptime 117ms avg MCP ready

Email Authentication Check API

Security & Cybersecurity

Check the SPF, DMARC and DKIM records of any domain and get coded issues, a grade and a score, plus MTA-STS, TLS-RPT, BIMI and MX checks.

Free 7-Day Trial

100% uptime 547ms avg MCP ready

Phone Number Authentication API

Security & Cybersecurity

Use our Phone Number Authentication API for seamless user onboarding and enhanced security against fraud.

Free 7-Day Trial

100% uptime 651ms avg MCP ready

Email Authentication API

Security & Cybersecurity

Verifies email syntax, domain and email delivery, with details about the address and domain.

Free 7-Day Trial

100% uptime 1,531ms avg MCP ready

Global Payment Authentication API

Finance & Payments

Safeguard global transactions with our Global Payment Authentication API, ensuring secure and accurate payment processing worldwide.

Free 7-Day Trial

100% uptime 881ms avg MCP ready

Routing Number Authentication API

Finance & Payments

The Routing Number Authentication API helps users confirm the legitimacy of bank routing numbers.

Free 7-Day Trial

100% uptime 1,035ms avg MCP ready

IMEI Authentication API

Security & Cybersecurity

Authenticate devices seamlessly with our IMEI Authentication API service for robust security.

100% uptime 3,181ms avg MCP ready

Email Authentication Auditor API

Security & Cybersecurity

Check a domain’s public SPF, DKIM, DMARC, BIMI, MTA-STS, and MX DNS records for email authentication issues.

Free 7-Day Trial

100% uptime 2,220ms avg MCP ready

Card Authenticator API

Finance & Payments

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

Free 7-Day Trial

100% uptime 56ms avg MCP ready

Firebase notification Scheduler

Tools & Utilities

Firebase Notification Scheduler is simple REST API service that helps you to scheduler your firebase notification to any future time. Please obtain a authentication keys to start scheduling. Please visit About Tab to learn how to obtain a authentication key.

Free 7-Day Trial

100% uptime MCP ready

Address Authenticity API

Communication & Messaging

Effortlessly validate email addresses with our API, ensuring proper format, functional MX record, and filtering out disposable addresses. Enhance communication accuracy.

Free 7-Day Trial

100% uptime 548ms avg MCP ready

WhatsApp OTP API

Communication & Messaging

The WhatsApp OTP API enables seamless user authentication and transaction verification by sending OTPs directly to phone numbers.

100% uptime 155ms avg MCP ready

Nebula User Context Insight API

Other

The API provides a versatile interface for accessing and managing data across various platforms. It enables developers to integrate, retrieve, and manipulate resources efficiently, supporting a wide range of functionalities including authentication, data querying, and real-time updates. Ideal for building scalable applications, the API is designed with simplicity and robustness in mind, offering comprehensive documentation and support for seamless implementation.

100% uptime MCP ready

SiteTrace Security Headers Analyzer API

Security & Cybersecurity

Security Headers Analyzer API. Audit HTTP security headers and SSL metadata, returning a security score, grade, missing headers, and recommendations by plan. Send a JSON POST request and receive a structured JSON response. Pricing, quotas, authentication, and subscriptions are handled by Zyla API Hub.

Free 7-Day Trial

100% uptime MCP ready

SiteTrace Supplier Finder API

Company Data

Supplier Finder API. Discover vetted global suppliers by product category and country. Send a JSON POST request and receive a structured JSON response. Pricing, quotas, authentication, and subscriptions are handled by Zyla API Hub.

Free 7-Day Trial