Compare 26 verified Authentication & Security APIs by pricing, documentation, and sandbox support.
Mono Connect API
Open banking infrastructure for real-time financial data, DirectPay, DirectDebit, GSM, disbursements & KYC verification
Fincra API
CBN PSSP-licensed African payment gateway. Checkout, virtual accounts, direct debit, and cross-border payments across 50+ currencies and 150+ countries.
Scan files, URLs & domains for malware across 70+ antivirus engines
Detect and block disposable email addresses at signup
Find & verify professional email addresses from any company domain
Validate emails in real time with disposable-address detection
Verify email addresses & remove invalid or disposable ones
Validate phone numbers & detect carrier across 190+ countries
Parse & validate phone numbers into standard format
Look up carrier, location & line type for phone numbers
Validate phone numbers & look up carriers across 249 countries
Validate phone numbers & check WhatsApp status in one toolkit
Verify if a phone number is active on WhatsApp
Send OTP verification via SMS, WhatsApp, voice & email
Verify format, carrier & type of Chinese phone numbers
Discover internet-connected devices & exposed services
Distinguish malicious IPs from benign internet scanners
Check URLs against a verified phishing database
Add login, social auth, MFA & user management to apps
Manage user registration, login, MFA & consent in one platform
Add passwordless login via magic links, OTP & passkeys
Check URLs against a database of known malware sources
Validate phone numbers & look up carriers across 232 countries
AbuseIPDB - Check and report abusive IP addresses
NVD CVE API - US government CVE vulnerability database
Pwned Passwords API - Check if a password hash appears in breaches (k-anonymity)
OSV.dev API - Open source vulnerability database
Google Safe Browsing API - Check URLs against Google's unsafe-site lists