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Best testtest APIs

MockHero API

Tools & Utilities

Generate realistic, schema-aware synthetic test data for any database schema. 50+ field types, AI prompt-to-schema, pre-built templates, JSON/SQL/CSV output.

Free 7-Day Trial

100% uptime 186ms avg MCP ready

Real Time Email Checker API

Communication & Messaging

Verify emails in real time, detect valid domains, correct formatting, MX records, gravatars, and blacklists to ensure reliable deliverability.

Free 7-Day Trial

100% uptime 236ms avg MCP ready

Face Liveness Check API

Visual Recognition & Imaging

Check if the selfie your users take is indeed live, optimally clicked to save in your records, if there are multiple faces detected in the image, and what percentage of the image the face actually covers.

Free 7-Day Trial

100% uptime 353ms avg MCP ready

Test User Creation API

Tools & Utilities

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

Free 7-Day Trial

100% uptime 251ms avg MCP ready

Fast Email Validation API

Communication & Messaging

Validates email addresses by checking format, domain, and MX records, providing structured results and metadata for automatic integrations.

Free 7-Day Trial

100% uptime 571ms avg MCP ready

Mock Data API MockHero

Tools & Utilities

MockHero’s Mock Data API simplifies creating placeholder data, perfect for testing and development needs.

Free 7-Day Trial

100% uptime 142ms avg MCP ready

Synthetic Data MockHero API

AI & Machine Learning

The Synthetic Data Synthetic Data MockHero API allows developers to generate diverse datasets while preserving privacy and compliance.

Free 7-Day Trial

100% uptime 113ms avg MCP ready

Schema Aware Data Generation MockHero API

Data & Analytics

Enhance your data generation with MockHero's Schema Aware Data Generation API, ensuring data integrity and relevance.

Free 7-Day Trial

100% uptime 93ms avg MCP ready

Phone Validation API

Communication & Messaging

Phone Validation API validates phone numbers and provides phone metadata, including carrier, line type, prepaid status, and a phone activity score to identify disconnected numbers.

Free 7-Day Trial

100% uptime 435ms avg MCP ready

Quick Email Verification API

Communication & Messaging

Ensure high-quality leads with the Quick Email Verification API, your fast, reliable solution.

Free 7-Day Trial

100% uptime 84ms avg MCP ready

Trusted Email Checker API

Security & Cybersecurity

Validate and verify email addresses securely to enhance user trust and reduce fraud with our Trusted Email Checker API.

Free 7-Day Trial

100% uptime 63ms avg MCP ready

Retrieve Web Data Speed Test API

Tools & Utilities

Quickly assess the efficiency of your site using the Retrieve Web Data Speed Test API for optimal performance insights.

Free 7-Day Trial

100% uptime 527ms avg MCP ready

Database Seeding MockHero API

Tools & Utilities

Use the Database Seeding Database Seeding MockHero API to populate your databases with quality test data, streamlining your development workflow.

Free 7-Day Trial

100% uptime 898ms avg MCP ready

Instant Email Validator API

Communication & Messaging

Get real-time results with our Instant Email Validator API, ensuring reliable communication every time.

Free 7-Day Trial

100% uptime 841ms avg MCP ready

Transient Mail Verification API

Security & Cybersecurity

The Transient Mail Verification API validates email addresses, identifying temporary or disposable ones to prevent spam and fraud.

Free 7-Day Trial

100% uptime 1,357ms avg MCP ready

Test Data Generator MockHero API

Tools & Utilities

Generate realistic test data effortlessly with MockHero's Test Data Generator API, enhancing your development process.

Free 7-Day Trial

100% uptime 1,451ms avg MCP ready

Dynamic Test Data MockHero API

Tools & Utilities

Effortlessly generate dynamic test data on demand using MockHero's Dynamic Test Data API, optimizing your testing process.

Free 7-Day Trial

100% uptime 1,531ms avg MCP ready

Fake Data API MockHero

Tools & Utilities

Create fully customizable fake data quickly using MockHero's Fake Data API, tailored to your project’s requirements.

Free 7-Day Trial

100% uptime 1,646ms avg MCP ready

Localization QA API

Natural Language Processing (NLP)

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

Free 7-Day Trial