A blazing-fast, privacy-first API for validating Indian Aadhaar numbers instantly.
The Aadhaar Validation API is a high-performance, free, and open-source project designed to provide an instant and reliable way to mathematically verify 12-digit Indian Aadhaar numbers. This tool ensures that any submitted Aadhaar number adheres to the correct logical structure without relying on slow or expensive third-party verification services.
We understand that Aadhaar numbers are highly sensitive personally identifiable information (PII). This verification API is built strictly around the Verhoeff algorithm, meaning it checks the mathematical checksum of the digits.
- No Data Storage: The API does not store full Aadhaar sequences in any database.
- Total Security: All verifications happen instantly in memory, providing true peace of mind for you and your users.
- ✅ Instant Results: Get real-time pass/fail validation in milliseconds.
- 🛡️ Accurate Checksum Verification: Automatically verify the required 12-digit format and validate the intricate Verhoeff Checksum logic.
- 🌍 Always Online: Engineered for high availability and zero downtime.
- 💸 100% Free and Open Source: No hidden fees, API limits, or paid tiers.
The Indian Unique Identification Authority of India (UIDAI) utilizes the Verhoeff algorithm for calculating the checksum of the 12-digit Aadhaar number. The 12th digit of every Aadhaar card is a checksum digit mathematically generated from the first 11 digits.
Our API immediately runs this complex algorithm against the provided input to determine if the Aadhaar number is mathematically valid, drastically reducing the chances of fake or mistyped Aadhaar numbers entering your system.
We believe in the power of open-source software. This project is dedicated to providing free, accessible, and secure tools for the community. Whether you are building an onboarding flow, an e-commerce platform, or a financial service, our Aadhaar Validation API is here to simplify your workflow.