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Best clave numerica validation APIs

Credit Card Number Validator API

Finance & Payments

Validate any credit or debit card number before it reaches your payment gateway: checksum verification, brand detection by prefix and a length check per brand. Nothing is stored or logged.

Free 7-Day Trial

100% uptime 92ms avg MCP ready

Secure Phone Validation API

Security & Cybersecurity

Verifies numerical structures, identifies countries and line types, and ensures accuracy when analyzing international numbers such as French numbers.

Free 7-Day Trial

100% uptime 10ms avg MCP ready

Mastercard Validation API

Finance & Payments

"Mastercard Validation API ensures secure transactions by swiftly verifying Mastercard details, offering seamless integration and enhanced fraud prevention for businesses."

Free 7-Day Trial

100% uptime 42ms avg MCP ready

International Phone Number Validation API

Communication & Messaging

Validate phone numbers worldwide, detect carrier, line type, country, formatting, mobile status, timezone, and numbering validity with accurate, structured responses.

Free 7-Day Trial

100% uptime 9ms avg MCP ready

Validate Phone Number API

Communication & Messaging

The Validate Phone Number API offers a seamless solution to verify the authenticity of provided phone numbers, ensuring accuracy and reliability. With this tool, users can swiftly assess the validity of a given phone number and access relevant metadata, enhancing data quality and precision in various applications.

Free 7-Day Trial

100% uptime 181ms avg MCP ready

Identity Document Validator API

Security & Cybersecurity

Validate and format identity and business document numbers with correct check digit verification. Confirm whether a number is valid and generate valid sample numbers for software testing.

Free 7-Day Trial

100% uptime 80ms avg MCP ready

Dominican Republic e-CF Validator API - DGII

Legal & Compliance

Keyless Dominican Republic e-CF (DGII, Ley 32-23) validator: XSD structure, code lists, e-NCF number, ITBIS/totals math, enveloped signature check. POST the XML, get a rule-coded JSON report.

Free 7-Day Trial

100% uptime 338ms avg MCP ready

VISA Number Validator API

Finance & Payments

Instantly verify VISA BINs and access card type, level, issuer details, and country—ideal for payment systems and fraud detection tools.

Free 7-Day Trial

100% uptime 43ms avg MCP ready

Securely Retrieve Phone Validation Data API

Security & Cybersecurity

Access real-time, accurate data with the Securely Retrieve Phone Validation Data API, ensuring your communications reach real users.

Free 7-Day Trial

100% uptime 117ms avg MCP ready

Secure Phone Number Verification API

Security & Cybersecurity

Ensure user trust with our Secure Phone Number Verification API, providing instant, accurate validation for optimal security.

Free 7-Day Trial

100% uptime 89ms avg MCP ready

Phone Security Validation API

Security & Cybersecurity

Enhance your application's security with the Phone Security Validation API, ensuring only legitimate numbers are validated.

Free 7-Day Trial

100% uptime 70ms avg MCP ready

LATAM Tax ID Validator API

Legal & Compliance

Validate tax identification numbers for 7 Latin American countries: CUIT (Argentina), RUT (Chile), RUC (Peru, Ecuador, Paraguay), NIT (Colombia), and CI (Uruguay). Check digit verification, formatting, and entity type detection.

Free 7-Day Trial

100% uptime 109ms avg MCP ready

Card Number Verifier API

Finance & Payments

Build confidence in your transactions with our Card Number Verifier API, providing detailed evaluations of vendor reliability.

Free 7-Day Trial

100% uptime 85ms avg MCP ready

Mastercard Validator API

Finance & Payments

Checks if a BIN number is valid and provides issuer bank, country, card level, card brand, and card type in seconds.

Free 7-Day Trial

100% uptime 40ms avg MCP ready

Secure Bank Number Validation API

Finance & Payments

Validate bank account numbers securely to enhance transaction confidence and prevent fraud.

Free 7-Day Trial

100% uptime 167ms avg MCP ready

Card Validator API

Finance & Payments

Ensure seamless payments with our Card Validator API, reducing fraud risks and enhancing customer trust.

Free 7-Day Trial

100% uptime 88ms avg MCP ready

Validate Phone Numbers API

Communication & Messaging

Simplify your process using the Validate Phone Numbers API to confirm authenticity and reduce fraud risks.

Free 7-Day Trial

100% uptime 913ms avg MCP ready

Costa Rica e-Invoice Validator API - Hacienda

Legal & Compliance

Keyless Costa Rica Hacienda v4.4 comprobante validator: official XSD for 8 document types, the 50-digit clave numerica, CABYS code lists, totals/IVA math, XAdES-EPES signature check. Rule-coded JSON r

Free 7-Day Trial