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Best source verification APIs

Global Number Verification API

Verify phone numbers and obtain data such as local and international format, country, location, operator, and line type with high accuracy.

Communication & Messaging Free 7-Day Trial

100% uptime 179ms avg MCP ready

Email Quality Check API

Validate syntax, detect disposable domains, check MX records and accurately measure deliverability scores.

Communication & Messaging Free 7-Day Trial

100% uptime 187ms avg MCP ready

Email Validity Check API

Instantly verify emails, validating their format and existence to ensure effective communication and reduce errors in your systems.

Communication & Messaging Free 7-Day Trial

100% uptime 726ms avg MCP ready

MCA Corporate Verification API

The MCA Corporate Verification API provides a secure and efficient way to verify if your merchants are registered with the Registrar of Companies in India and have the same details as expected. This helps to make your onboarding process faster and smarter, while also ensuring that it is safer and more reliable.

Company Data Free 7-Day Trial

100% uptime 468ms avg MCP ready

Speaker Verification

PresentID Speaker verification API checks whether two voices belong to the same person or not. This capability is potentially useful in call centers.

Voice & Speech Technology Free 7-Day Trial

100% uptime 394ms avg MCP ready

Quick Email Verification API

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

Communication & Messaging Free 7-Day Trial

100% uptime 84ms avg MCP ready

Email Content Quality Assessment API

Assess your email content's effectiveness and optimize engagement with our Email Content Quality Assessment API.

Communication & Messaging Free 7-Day Trial

100% uptime 47ms avg MCP ready

Retrieve Email Quality Data API

Gain insights by retrieving essential email quality data to improve your marketing campaigns with ease.

Communication & Messaging Free 7-Day Trial

100% uptime 56ms avg MCP ready

Rapid Email Confirmation API

Confirm email addresses rapidly to boost marketing effectiveness and user trust in your campaigns.

Communication & Messaging Free 7-Day Trial

100% uptime 416ms avg MCP ready

Authorship Verification API

Enhance your platform's capabilities with our Authorship Verification API, which enables rapid content identification and attribution. Ensure authenticity and mitigate plagiarism risks seamlessly.

Legal & Compliance Free 7-Day Trial

100% uptime 672ms avg MCP ready

Content Source Validation API

The Content Source Validation API employs advanced algorithms to distinguish human-authored from AI-generated text, ensuring authenticity and trust in textual information.

Natural Language Processing (NLP)

100% uptime 691ms avg MCP ready

Artificial Image Verifier API

Instantly detect if an online image is AI-made. Get probability scores using advanced models and ensure content transparency with one simple call.

Visual Recognition & Imaging Free 7-Day Trial

100% uptime 488ms avg MCP ready

Verified Email Lookup API

Scrape and curate live email content to stay ahead of your competition and fuel your strategies.

Communication & Messaging Free 7-Day Trial

100% uptime 653ms avg MCP ready

Marketing Outreach Email Authenticity API

Boost your outreach success with the Marketing Outreach Email Authenticity API, ensuring genuine engagement.

Communication & Messaging Free 7-Day Trial

100% uptime 762ms avg MCP ready

Fact Checking API

Introducing our Fact-Checking API, your reliable ally against misinformation. Submit any claim, and our API swiftly validates its accuracy, drawing from a vast database of credible sources. Receive instant verdicts—true, false, or partially true—accompanied by detailed references. Empower your users with verified information, fostering a trustworthy online environment.

News & Events Free 7-Day Trial

100% uptime 1,632ms avg MCP ready

FinTech Client Communication Verification API

Streamline FinTech communication with robust verification to enhance client trust and security.

Communication & Messaging Free 7-Day Trial

100% uptime 10ms avg MCP ready

Cut your bounce rate in half

Improve your email deliverability rates with our Cut your bounce rate in half, ensuring messages always get seen.

Communication & Messaging Free 7-Day Trial

100% uptime MCP ready

Email Quality Evaluation Fetch API

Fetch comprehensive evaluations of your email quality to enhance communication and boost performance.

Communication & Messaging Free 7-Day Trial

100% uptime 652ms avg MCP ready

Veracity Check API

The Veracity Check API verifies the veracity of information, allowing to validate data in articles, news or other sources, identifying possible inaccuracies or falsehoods.

News & Events Free 7-Day Trial

100% uptime 2,233ms avg MCP ready

International Contact Quality Assurance API

Optimize global connections with the International Contact Quality Assurance API, ensuring reliable communication.

Communication & Messaging Free 7-Day Trial

100% uptime 980ms avg MCP ready

VISA Verification API

Effortlessly verify user eligibility for visas, ensuring smooth application processes with our Visa Verification API.

Travel & Transportation Free 7-Day Trial

100% uptime 1,064ms avg MCP ready

Verify Global Numbers API

Ensure accuracy with the Verify Global Numbers API, validating phone numbers worldwide for reliable communication.

Communication & Messaging Free 7-Day Trial

100% uptime 7,555ms avg MCP ready

Extract Email Quality Metrics API

Extract specific email quality metrics to refine your outreach efforts and maximize conversion rates.

Communication & Messaging Free 7-Day Trial

100% uptime 912ms avg MCP ready

Freelance Project Email Trustworthiness API

Enhance freelance interactions with our API to verify email trustworthiness for project collaboration.

Communication & Messaging Free 7-Day Trial

100% uptime 1,524ms avg MCP ready

Content Authenticity API

Ensure content originality with real-time plagiarism detection, matched source links, and detailed similarity analysis. Supports large text submissions for academic, creative, and professional use.

Science & Education Free 7-Day Trial

100% uptime 7,340ms avg MCP ready

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Best source verification APIs

Global Number Verification API

Email Quality Check API

Email Validity Check API

MCA Corporate Verification API

Speaker Verification

Quick Email Verification API

Email Content Quality Assessment API

Retrieve Email Quality Data API

Rapid Email Confirmation API

Authorship Verification API

Content Source Validation API

Artificial Image Verifier API

Verified Email Lookup API

Marketing Outreach Email Authenticity API

Fact Checking API

FinTech Client Communication Verification API

Cut your bounce rate in half

Email Quality Evaluation Fetch API

Veracity Check API

International Contact Quality Assurance API

VISA Verification API

Verify Global Numbers API

Extract Email Quality Metrics API

Freelance Project Email Trustworthiness API

Content Authenticity API

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