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APIs Overview →

Complete API catalogue

Mobile Recharge API →

Prepaid mobile & DTH recharge

Vehicle RC Verification API →

Instant vehicle registration check

UPI / Bank Verification API →

Penny drop & VPA validation

Telecom Operator API →

Operator & circle detection

Fuel Price API →

Live petrol, diesel, CNG rates

Commodity Price API →

Gold, silver, diamond rates

Weather API →

Real-time forecasts India

Air Quality API →

Real-time AQI data

Verification API (KYC) →

Aadhaar, PAN, DL, Voter ID

Cyber Security Verification →

Fraud detection & risk scoring

Industries Overview →

All industries we serve

Fintech & NBFC →

KYC, UPI, fraud detection

Logistics & Fleet →

Vehicle RC, fuel, weather

Insurance & Legal →

Motor insurance & claims

Telecom & Recharge →

Recharge & operator detection

Jewellery & Investment →

Live gold & silver rates

Agriculture & Smart City →

Weather & AQI data

E-Commerce →

Seller KYC & fraud detection

SaaS & Platform →

Embeddable APIs for SaaS

Solutions Overview →

All solution stacks

KYC Automation →

Instant identity verification

Recharge Platform →

Launch a recharge business

Fleet Onboarding →

Automate driver verification

Digital Lending →

End-to-end loan automation

Smart City Data →

Real-time environmental data

Documentation Hub →

Start here for developers

Authentication →

API key setup & security

Error Codes →

Complete error reference

Webhooks →

Real-time event notifications

Sandbox Testing →

Safe testing environment

Rate Limits →

Requests per second by plan

SDKs & Libraries →

Node.js, Python, PHP SDKs

Blog Home →

All articles & guides

What is an API Service Provider? →

Complete 2026 guide

Integrate Mobile Recharge API in Node.js →

Step-by-step tutorial

Vehicle RC Verification API Guide →

Developer reference

UPI Penny Drop Verification →

How it works & integration

Best API Providers in India →

2026 comparison

KYC API for NBFC: RBI Compliance →

Compliance checklist

About Us →

Our story, mission, and values

Our Team →

Meet the people behind API Express

Careers →

Join the team — 6 open roles

Case Studies →

Real client results

Fintech Case Study →

94% faster KYC at an NBFC

Logistics Case Study →

12,000 drivers in 90 days

Insurance Case Study →

87% faster claims, -63% fraud

Privacy Policy →

How we handle your data

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Legal agreement governing use

Refund Policy →

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Security →

How we protect your data

System Status →

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Changelog →

Product release history