We connect systems for:
What is API Integration — and Why Does Your Business Need It?
Your business probably runs on six to ten different software tools. Each one does its job well. The problem is that most of them do not know what the others are doing.
Think of it as opening doors between rooms
Picture your software tools as people working in separate rooms of the same building. Each person is excellent at their job. But they cannot hear each other. So someone walks between the rooms, carries information from one person to another, and keeps everyone in sync manually. That person is one of your employees — spending hours every day on something a computer should be doing automatically.
An API integration is the digital door between those rooms. When a new borrower is added to your CRM, it appears in your loan system automatically. When a payment is processed, your accounting records update. When a loan is disbursed, the bureau gets notified. Everything happens instantly — without anyone doing it manually.
At CodePulse, we have built over 200 API integrations for banks, NBFCs, fintechs, and enterprises across India. Every integration we build is secure, tested, monitored, and fully documented.
What Disconnected Systems Are Costing You Every Day
Every manual data transfer your team makes is a cost — in time, in errors, and in decisions made on stale information.
Your team copies data between systems every day
Customer information added to your CRM is manually typed into your loan system. Payment records downloaded from your payment gateway are uploaded to your accounting tool. Hours of pointless work that creates errors and delays.
The same customer looks different in every system
Different address in your CRM and your loan system. Different phone number in your payment platform and your collections tool. Reconciliation becomes a daily nightmare. Data quality deteriorates over time.
Real-time decisions are impossible
When your systems sync once a day in a batch job, your teams are always working with yesterday's data. Credit decisions, collections actions, and customer service all suffer from this delay.
Compliance gaps form in the cracks
When bureau updates, KYC records, and transaction data live in separate systems that do not sync, your regulatory reports become incomplete. Regulators expect a single, consistent view of every customer and transaction.
API Integrations We Have Built and Can Build For You
We have live experience with most major Indian and global financial APIs. Here is what we connect — with real integrations in production, not just documentation experience.
Credit Bureaus
- CIBIL (TransUnion)
- CRIF High Mark
- Experian
- Equifax
KYC and Identity Verification
- Aadhaar OTP / eKYC
- PAN Verification
- CKYC Registry
- Video KYC
- DigiLocker
- Signzy
Payment Gateways
- Razorpay
- Cashfree
- PayU
- Juspay
- Paytm
- BillDesk
Banking and Payments
- UPI (NPCI)
- NACH / eNACH
- NEFT / RTGS / IMPS
- BBPS
- Account Aggregator (Setu)
Accounting and ERP
- Tally
- SAP
- Oracle Financials
- Zoho Books
- QuickBooks
Communication Channels
- WhatsApp Business API
- SMS Gateways
- IVR Systems
- Email (SendGrid)
- Push Notifications
CRM and Business Tools
- Salesforce
- HubSpot
- Zoho CRM
- Freshworks
Fintech Utilities
- Perfios
- GST APIs
- MCA / ROC APIs
- GSTN
- Bank Statement Analyser APIs
API integrations live in production
200+
Financial APIs with direct experience
50+
Uptime across all production integrations
99.9%
Integrations fully tested and documented
100%
API Integration Development Cost in India — Real Numbers
No "it depends" without any guidance. Here is what different types of API integration projects typically cost.
How much does one API integration cost?
A single, well-documented API — payment gateway, bureau, KYC — costs ₹1.5–4 lakhs including testing, documentation, and monitoring setup. More complex APIs with certification requirements cost more.
What about connecting multiple systems?
A project connecting 4–6 platforms — LMS, core banking, bureau, payment gateway, CRM, accounting — typically costs ₹8–20 lakhs. Fixed-price per integration scope agreed upfront.
How long does API integration take?
Single well-documented API: 2–4 weeks including testing. Multi-system project: 6–12 weeks. APIs requiring NPCI or Account Aggregator certification: add 4–8 weeks for the certification process.
Do you work across India?
Yes — remote-first. We work with clients in Mumbai, Bengaluru, Chennai, Delhi NCR, Hyderabad, Coimbatore, Pune, and across India. All deliverables in English with full technical documentation.
📍 API integration services across India — We have built integrations for fintech companies in Bengaluru, banks in Mumbai, NBFCs in Chennai and Coimbatore, and enterprises across India. Remote delivery, Indian time zone, full documentation in English.
What Every API Integration From CodePulse Includes
Building an API integration is more than connecting two endpoints. Here is the complete scope of what we deliver with every integration project.
🔐 Secure Authentication and Credential Management
Every integration uses the correct authentication method — OAuth 2.0, API keys, JWT, mutual TLS — with credentials stored in a secrets vault. Never in code or configuration files. Never on a shared drive.
🔁 Retry Logic and Error Handling
APIs fail. Networks time out. We build retry logic, exponential backoff, circuit breakers, and dead-letter queues into every integration. A failed API call does not cause data loss or system downtime.
📋 Complete Logging and Audit Trail
Every API call — request body, response, timestamp, outcome — is logged and retained. For financial integrations, this is essential for compliance, debugging, and dispute resolution with the API provider.
📊 Monitoring and Alerting
Real-time monitoring for every integration — response time, error rate, data volume. Your team gets an alert the moment something behaves abnormally — before your users or borrowers notice anything.
🧪 Full Test Coverage
Unit tests, integration tests, and end-to-end tests in staging before production. We test error responses, rate limit behaviour, edge cases, and the scenarios that only show up under real-world conditions.
📄 Technical Documentation
Complete documentation for every integration — data flow diagrams, field mappings, error codes, and runbooks your team can use to maintain and troubleshoot without calling us every time.
“We needed to connect our loan origination system to four bureau APIs, our core banking system, accounting software, and an eSign provider — all at the same time, with a hard launch deadline. CodePulse mapped everything out in the first week, built all seven integrations in parallel, and delivered every one on time with zero production incidents in the first 30 days after launch. ”
CTO — NBFC, Delhi NCR
Frequently Asked Questions — API Integration Services
API integration connects your software systems so they share data automatically — instead of your team manually copying information between them. Most businesses run multiple tools that were not designed to talk to each other: a CRM, a loan system, a payment gateway, an accounting tool. API integration makes data flow between them in real time, eliminating duplication, reducing errors, and giving every team member a single, consistent view of your business.
A single, well-documented API integration — such as connecting your platform to CIBIL, a payment gateway, or a KYC provider — typically costs ₹1.5–4 lakhs including testing, documentation, and monitoring setup. A multi-system integration project connecting five to six platforms costs ₹8–20 lakhs. Projects requiring NPCI or Account Aggregator certification add to the timeline and cost. All projects are fixed-price.
Yes. We regularly work with APIs that have incomplete, outdated, or purely technical documentation — including legacy banking system APIs and government portal APIs. We conduct our own API research, test endpoints directly, and map data structures to fill in the gaps. Several of our most successful integrations were built from minimal documentation.
Every integration we build includes failure handling by design. This means configurable retry logic with exponential backoff, timeouts, circuit breakers that prevent cascading failures, and dead-letter queues for messages that cannot be processed immediately. Your system continues operating even when an external API is unavailable. All failures are logged and your team is alerted instantly.
Yes. We have supported clients through NPCI certification for UPI-based payment products. We prepare the technical documentation, security evidence packages, and testing evidence that NPCI requires. We work alongside your compliance and legal teams on the actual regulatory submission. The certification process typically adds 4–8 weeks to a payment integration project.
The right API integration partner has real production experience with the specific APIs you need to connect — not just documentation knowledge. They give you fixed-price projects, full technical documentation on handover, and monitoring in place from day one. CodePulse has 200+ live integrations in production across financial services in India. We are happy to share specific references for the API types you need.
Get a Free Quote for Your Custom Software Project
Bring us your idea, your problem, or your existing codebase. We will tell you honestly what it would take to build it — scope, price, and timeline — within 24 hours.