The Data Validation APIs List

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Total (92)

Email (LabStack)

HTTPS CORS Auth: apiKey

Instant email address verification to filter legit addresses
languagelayer

HTTPS Auth: No

Free, powerful language detection JSON API for 173 languages, supporting single and batch requests, PHP, JavaScript, Python, Ruby, Java, and more.
Lob.com

HTTPS Auth: apiKey

Lob is the only automated direct mail platform that transforms your direct mail into intelligent mail that is scalable, personalized, and measurable.
MORE

HTTPS CORS Auth: apiKey

MORE is an award-winning email verification API. It provides a simple, fast and secure way to verify email addresses in real time. Use MORE in sign-up forms, CRM and marketing platforms whenever you need to verify an email address with a high degree of accuracy.
NumValidate

HTTPS Auth: No

Free and open source REST API that provides a simple yet effective way to validate and format a phone number.
Postman Echo

HTTPS Auth: No

Postman Echo is service you can use to test your REST clients and make sample API calls. It provides endpoints for GET, POST, PUT, various auth mechanisms and o
PurgoMalum

Auth: No

Content validator against profanity & obscenity
Scraper.run

HTTPS CORS Auth: No

WebScaper Toolbox, Free IP/DNS/Domain/Whois/Email Validator API
US Autocomplete

HTTPS CORS Auth: apiKey

Address Autocomplete | Use our Autocomplete API to suggest valid addresses as users type in realtime. Uses a simple HTTP endpoint.
US Extract

HTTPS CORS Auth: apiKey

Extract USPS addresses from any text with our easy-to-use API. Simple HTTP endpoint and SDKs. Try free now.
US Street Address

HTTPS CORS Auth: apiKey

Validate and append data for any US postal address
vatlayer

HTTPS Auth: apiKey

Documentation, code and integration guides for the vatlayer API - free, instant EU VAT number validation, price calculation and VAT rates JSON API.