30+ integrations delivered
Third-party API integrations for fintech apps
Finashtech has integrated more than 50 third-party services — payment gateways, payouts and banking APIs, email and SMTP, SMS and OTP gateways, WhatsApp, document scanning and KYC, AML data, credit bureaus, accounting, storage, maps and analytics — into fintech and business apps.
Every integration is built the same way: behind a clean adapter, retry-safe, monitored and documented, so your product never depends on a single vendor's quirks.
Categories
What we connect your product to
Fifteen categories, 30+ integrations and counting. Don't see what you need? If it has an API, we can integrate it.
15 categories shown
- Payments & banking
Payment gateways
Cards, UPI, net banking, wallets and international payments — checkout, refunds, webhooks and reconciliation against gateway reports.
- Payments & banking
Payouts & banking APIs
Bulk and instant payouts, virtual accounts, account validation and bank statement feeds behind clean, idempotent adapters.
- Messaging & comms
Email & SMTP
Transactional email over SMTP or provider APIs — receipts, statements and alerts with templates, bounce handling and delivery tracking.
- Messaging & comms
SMS & OTP gateways
One-time passwords, transaction alerts and reminders, with sender-ID and template management and automatic failover between routes.
- Messaging & comms
WhatsApp & messaging
Business messaging for notifications, support conversations and two-way flows, with opt-in and template approval built into the workflow.
- Messaging & comms
Voice & video (WebRTC / telephony)
Video and voice SDKs, SIP trunks and telephony APIs for in-app calls, video KYC, click-to-call and recorded conversations.
- Messaging & comms
Push notifications
Mobile and web push for transaction alerts, reminders and incoming calls — segmented, scheduled and measured.
- Identity & risk
KYC, ID & document scanning (OCR)
ID document capture and OCR, face match and liveness, address proof and e-sign — wired into risk-based onboarding flows.
- Identity & risk
AML & sanctions data
Sanctions, PEP and adverse-media screening data, with ongoing monitoring and alerts routed into case management.
- Identity & risk
Credit bureaus & scoring
Bureau pulls, alternative-data scoring and decision engines for lending, BNPL and credit-line products.
- Identity & risk
Auth & SSO
Single sign-on, OAuth 2.0 / OpenID Connect, social login and multi-factor authentication for customers and staff.
- Data & platform
Accounting & ERP
Journal sync, invoices, GST-ready exports and ledger reconciliation with the accounting and ERP systems finance teams already use.
- Data & platform
Cloud storage
Encrypted object storage for documents, recordings and exports, with signed URLs, lifecycle rules and retention policies.
- Data & platform
Maps & geolocation
Address autocomplete, geocoding, geofencing and location checks for onboarding, field agents and delivery tracking.
- Data & platform
Analytics & monitoring
Product analytics, error tracking, logs and uptime monitoring — so you see how the product is used and when something breaks.
How we integrate
Integrations that don't break at 2 a.m.
Third-party APIs fail in creative ways — timeouts, duplicate callbacks, silent schema changes. We design for those cases first, because that is where money and messages get lost.
One adapter per provider
Your product talks to a single internal interface; each provider lives behind its own adapter, so adding or swapping one is a contained change.
Idempotent & retry-safe
Idempotency keys, timeouts and backoff on every call — a network blip never sends a payment, SMS or payout twice.
Signed webhooks
Incoming callbacks are signature-verified, de-duplicated and processed through queues, with dead-letter handling for failures.
Failover where it matters
Critical flows such as OTP delivery and payments can route to a second provider automatically when the first degrades.
Secrets, not strings
API keys live in a secrets manager, rotate without a deploy, and never appear in code or logs.
Monitored end to end
Latency, error rates and delivery status per provider, with alerts before your customers notice.
FAQ
Frequently asked questions
Which third-party services can you integrate into a fintech app?
Payment gateways, payouts and banking APIs, email/SMTP, SMS and OTP gateways, WhatsApp and messaging, voice and video, push notifications, KYC and document scanning (OCR), AML and sanctions data, credit bureaus, accounting and ERP, cloud storage, maps, analytics and monitoring, and SSO. Finashtech has integrated more than 50 third-party services across these categories.
Can you integrate a provider you have not used before?
Yes. If a provider has documented APIs, webhooks or an SDK, we can integrate it. We start with a short spike in the provider's sandbox, then build a production adapter with tests, retries and monitoring.
How do you keep integrations reliable?
Every provider sits behind its own adapter with timeouts, idempotent retries, webhook signature checks and dead-letter queues. Health checks and alerts tell us when a provider degrades, and critical flows such as OTP or payments can fail over to a second provider.
Can we switch providers later without rewriting the app?
That is the point of the adapter layer: your product talks to one internal interface, so moving to a new payment gateway, SMS route or KYC vendor is a contained change rather than a rewrite.
How are API keys and customer data protected?
Credentials live in a secrets manager, never in code. Data is encrypted in transit and at rest, only the fields a provider needs are sent to it, and every call is logged for audit without storing sensitive payloads in plain text.
How long does a typical integration take?
A well-documented API with a sandbox can be production-ready in days; complex banking, bureau or compliance integrations with certification steps take longer. We share a plan and timeline after reviewing the provider's documentation.
Start a project
Need a provider connected?
Tell us which services your product needs to talk to. We reply within one business day with an approach and a timeline.