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API Design & Systems Integration

Service Overview

Modern businesses run on multiple platforms — CRMs, ERPs, payment gateways, communication tools, logistics APIs, and more. We design and implement integration layers that connect your systems reliably, handle failures gracefully, and give you a single source of truth across your stack. From simple webhook setups to complex multi-system orchestration, we’ve integrated it all — including India-specific platforms like Razorpay, Zoho, MSG91, and Meta WABA.

Our Creative Process

A structured approach that keeps creativity flowing and projects on track.

Let’s Work Together
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  • 01

    Integration Mapping

    Map all systems involved, data flows, and failure scenarios before touching a line of code.

  • 02

    API Design / Audit

    Design new APIs or audit existing ones for consistency, security, and performance.

  • 03

    Build & Test

    Develop integrations with error handling, retry logic, logging, and edge case coverage built in.

  • 04

    Monitor & Maintain

    Integration health monitoring, alerting, and maintenance to catch issues before they reach users.

Key Features

REST & GraphQL API Development

Payment Gateway Integration

WhatsApp Business API (Meta WABA)

CRM Integration (Zoho, Salesforce)

ERP Integration (Zoho Books, Tally)

SMS Gateway (MSG91)

Email Automation (AWS SES)

Webhook Architecture

Broker API Integration

Why Engineering Teams & Founders Choose Fulgid

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India-Stack Expertise

Deep experience with Razorpay, Zoho, MSG91, Meta WABA, and other India-first platforms.

Fault-Tolerant Design

We build retry logic, dead-letter queues, and monitoring — integrations that survive real-world failures.

Full Documentation

Every integration is documented — endpoints, payloads, error codes — so your team can maintain it.

Proven Track Record

We've integrated Zoho Books + Shopify, broker APIs + trading platforms, and govt notification systems.

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Integrations

The Tools We Master — So You Don't Have To

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Simple Email Service
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Have Questions? We've Got Answers

Yes — Zoho CRM, Zoho Books, Zoho Flow. We've handled complex GST line-item mapping and multi-channel order sync.

Yes — Meta WABA setup, template creation, webhook handling, and integration with your backend or CRM.

We build abstraction layers so updates to third-party APIs require minimal changes on your side. Monitoring alerts us when APIs behave unexpectedly.