Prefill API for Instant Customer Data Autofill & Seamless KYC
Our Prefill API enables businesses to automatically fetch and populate user details like name, address, DOB, and identity data using minimal inputs such as mobile number, PAN, or other identifiers.
PREFILL.io
Smart Form Automation
{
"status": "SUCCESS",
"node": "ID_VAL_04",
"data": {
"legal_name": "Solaris Tech...",
"confidence": 0.98,
"source": "MCA_DATABASE"
}
}
This data was automatically retrieved from registered government nodes based on the identifier provided. Encryption: SHA-256.
100% Automated & Instant Form Prefill API
Boost conversion rates by pre-populating user data instantly from verified sources.
1. Simple Trigger
Enter a unique identifier like Mobile Number or PAN to initiate the fetch.
2. Data Retrieval
Our API securely fetches verified personal details from central databases.
3. Auto-Population
Forms are instantly pre-filled with name, DOB, address, and more.
Why Use Smart Prefill API?
Eliminate manual entry friction and reduce drop-offs with a seamless, data-driven onboarding experience.
Higher Conversion Rates
Reduce form-filling time by 80%, leading to significantly higher user completion rates.
Verified Data Quality
Minimize human errors and typos by pulling data directly from authoritative records.
Seamless Onboarding
Create a "wow" moment for users as their information appears magically on screen.
KYC Readiness
Streamline identity verification by matching pre-filled data with official documentation.
Low Latency Response
Our optimized infrastructure ensures data is delivered and filled in milliseconds.
Enterprise-Grade Privacy
Consent-driven data fetching with AES-256 encryption for maximum user trust.
Streamline Your User Onboarding
Our Prefill API automates data entry by instantly retrieving verified user information to boost conversion rates and reduce friction.
Zero-Friction Filling
Eliminate manual typing for users. Automatically populate names, addresses, and KYC details with just a single identifier.
Verified Data Sources
Fetch high-fidelity information directly from official records, ensuring 100% accuracy and reducing data entry errors.
Instant Integration
Connect to our RESTful endpoints in minutes. Designed for low-latency performance in high-traffic applications.
Built for Digital Growth
The Prefill API is the essential tool for modern customer acquisition. Our infrastructure provides lightning-fast data retrieval to ensure users complete your checkout or sign-up flow without dropping off.
🔐 Key Features of Smart Prefill API
Accelerate user onboarding with high-speed automated data retrieval and verified personal information from official databases.
Automated Data Sync
Instant population of user fields from verified sources using just a mobile number or ID.
Verified Identity
Ensure high data integrity by fetching legal names and addresses directly from central registries.
Field Accuracy
Drastically reduce manual entry errors and form drop-offs with 99.9% data precision.
Consent-Based Access
Secure data transmission following strict privacy standards and user authorization protocols.
Seamless SDKs
Lightweight developer tools for integrating prefill capabilities into web and mobile apps.
Scalable Infrastructure
Redundant servers designed to handle millions of prefill requests without downtime.
Conversion Lift
Improve your ROI by simplifying the journey from visitor to registered user.
Comprehensive Docs
Detailed API reference for mapping data objects to your specific form fields.
How Smart Prefill Works
Automate your onboarding workflow by pulling verified user data points from secure, authoritative registries in four simple steps.
Submit Identifier
Submit the user's mobile number or identifier like PAN to initiate the data lookup.
Secure Retrieval
The API establishes a secure connection with verified data sources to fetch matching profiles.
Data Mapping
Verified details like Name, DOB, and Address are automatically mapped to your API request.
Form Populate
The form is instantly prefilled for the user, requiring only a final review before submission.
Why IDSPay is Better than Other Prefill APIs?
The gold standard for digital lending, fintech apps, and financial risk assessment.
Instant Response
Industry-leading response times to reduce customer drop-off during onboarding.
Direct Bureau Access
Stable, direct integrations with major bureaus for the highest data accuracy.
Comprehensive Data
More granular credit insights and history logs than competing aggregators.
Scale-First Pricing
Cost-effective per-hit pricing models tailored for high-volume lenders.
Regulatory Compliance
Strict adherence to data privacy and financial regulations to ensure your peace of mind.
Integrate Smart Prefill API in Minutes
Automate user onboarding and eliminate manual data entry. Access verified user profiles with robust SDKs for Node.js, PHP, Python, and Java.
curl --request POST \
--url https://api.idspay.in/v3/onboarding/prefill \
--header 'Authorization: Bearer YOUR_API_KEY' \
--header 'Content-Type: application/json' \
--data '{
"identifier_type": "PAN",
"identifier_value": "ABCDE1234F",
"mobile": "9876543210"
}'{
"status": "SUCCESS",
"data": {
"full_name": "John Doe",
"dob": "1990-05-15",
"address": "123 Tech Park, Bangalore",
"email_masked": "j***e@domain.com",
"gender": "MALE",
"verification_id": "PRFL_98765432"
}
}Why We Are The Better Choice
Compare our performance and see why top fintechs trust our infrastructure.
| Feature | 🚀 Our API | Other Providers |
|---|---|---|
| Accuracy |
99.9% (Govt. Direct)
|
~85-90% (Scraped)
|
| Speed |
< 500ms
|
2 - 5 Seconds
|
| Pricing |
Pay-per-use (No Fixed Fee)
|
High Monthly Commitment
|
| Support |
24/7 Priority Support
|
Email-only (48hr TAT)
|
* Based on internal benchmark tests and competitor analysis (April 2026).
Frequently Asked Questions
Common developer queries about integrating the Smart Prefill API.
1. What is the Smart Prefill API?
The Smart Prefill API enables platforms to automatically populate registration and onboarding forms by retrieving verified user information—such as name, address, and DOB—from official registries.
2. What data points can be prefilled?
Depending on the identifier used, the API can return a full legal name, date of birth, permanent/current address, gender, and masked contact details (email or mobile) for verification.
3. Is the retrieved information verified?
Yes, the data is sourced in real-time from authoritative central registries and government-linked databases, ensuring the highest level of accuracy and trust for your onboarding flow.
4. What identifiers are required for prefilling?
You can initiate a prefill request using common identifiers such as a mobile number, PAN (Permanent Account Number), or other government-issued ID numbers, subject to user authorization.
5. How fast does the API return the data?
The Smart Prefill API is built for speed, typically delivering a structured JSON response in under 1 second to ensure a smooth, low-friction user experience.
6. Does this API support multiple data sources?
Yes, our infrastructure aggregates data from various verified sources, providing a single, unified response format regardless of which registry the data originates from.
7. How is user privacy and data security handled?
We utilize end-to-end encryption (AES-256) and strictly adhere to data protection regulations. Personal data is only fetched upon valid authentication and is never stored permanently on our servers.
8. Which platforms can benefit from Smart Prefill?
It is ideal for e-commerce, banking, insurance, healthcare, and travel platforms where reducing form-filling time significantly improves user conversion and retention.
9. Are there any rate limits for the API?
We offer flexible tier-based limits designed for both startups and large enterprises, ensuring high availability even during peak traffic periods for high-volume onboarding.
10. How do I start integrating?
Simply create an account on the IDSPay developer portal, obtain your API keys, and follow our comprehensive documentation to map the response fields to your application's forms.