INDEXIZ

API Development

API Development & Integration that Connects Everything

We design, build and document REST and GraphQL APIs and integrate platforms, ERPs, CRMs and third-party services, with security, versioning and monitoring handled from the start.

BKSNARTJ200+ integrations delivered by Indexiz
API requestp95 120ms
RequestPOST /orders · partner appValidateAuth · schema · rate limitProcessERP · inventory · paymentRespond201 · webhook fired
✓Order syncedShopify → Odoo · 0.6s · retried 0×
99.9%integration uptime
200+Integrations delivered
50M+API calls handled monthly
99.9%Integration uptime
40+Platforms connected
What we do

API Development & Integration Services

Good APIs are products: predictable, documented and safe to depend on. We build them that way, and we make existing systems talk to each other reliably.

REST & GraphQL API Design

Resource modelling, OpenAPI or GraphQL schemas, pagination, filtering and error conventions designed before code is written.

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System Integrations

Two-way sync between ERPs, CRMs, eCommerce platforms, payment gateways, shipping carriers and marketplaces.

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API Security

OAuth2 and OpenID Connect, API keys, scopes, rate limiting, input validation and audit logging to protect your data and partners.

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Documentation & SDKs

Developer portals, interactive docs, Postman collections and client SDKs so partners integrate in days, not months.

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Versioning & Migration

Backwards-compatible versioning, deprecation policies and migration of legacy SOAP or undocumented APIs to modern standards.

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Monitoring & Support

Uptime, latency and error tracking, alerting, retry queues and ongoing maintenance as upstream APIs change.

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Real use cases

APIs & Integrations We’ve Delivered

Wholesale

Magento to Odoo ERP integration

Orders, inventory, prices and customers synced in both directions with conflict handling, retry queues and a reconciliation dashboard for the ops team.

FinTech

Public payments API for partners

A versioned REST API with OAuth2, webhooks, sandbox environment and developer portal that opened the product to third-party platforms.

40+partner integrations in year one
Logistics

Multi-carrier shipping gateway

A single GraphQL API in front of eight carrier APIs for rates, labels and tracking, with fallbacks when a carrier is down.

99.9%availability across carriers
Why Indexiz

Why Indexiz for API Development

Integrations fail in the details: partial updates, retries, rate limits and data that never quite matches. We have solved those problems across hundreds of systems.

Design First

API contracts are designed and reviewed with consumers before implementation, so changes are cheap and surprises are rare.

Secure by Default

Authentication, authorisation, validation and rate limiting are part of the foundation, not an afterthought.

Resilient Integrations

Idempotency, retries, dead-letter queues and reconciliation jobs keep data consistent when networks and vendors misbehave.

Observable

Every API ships with metrics, logs and alerting so you know about problems before your partners do.

Our approach

Contract First, Then Code.

We write the API specification and integration mapping with you, get sign-off from the teams that will consume it, then build against the contract with automated tests.

Technologies

Platforms & Technologies We Integrate

We build APIs in the stack that fits your team and connect the business systems you rely on.

Our process

A Simple Path to Success

A proven process to turn your ideas into powerful digital solutions.

01

Map Systems

We document the systems, data entities, volumes and business rules involved in the integration.

02

Design the Contract

API specification, data mapping, error handling and security are designed and agreed.

03

Build & Test

Implementation with automated contract tests, a sandbox and load testing before go-live.

04

Monitor & Maintain

Production monitoring, alerting and ongoing updates as connected systems evolve.

FAQ

Frequently Asked Questions

Answers to the questions we hear most often. Need more detail? Talk to our team.

REST suits most public and partner APIs because of its simplicity and caching. GraphQL shines when clients need flexible queries across related data, such as front-ends and mobile apps. We often use both where it makes sense.

Yes. We use database-level integration, file exchanges, RPA or middleware depending on the system, and wrap legacy applications in a modern API so nothing else has to know.

With a clear system of record per entity, idempotent operations, retry queues for failures and scheduled reconciliation jobs that detect and fix drift.

OAuth2 or API keys with scopes, TLS everywhere, strict input validation, rate limiting per client, logging and regular security reviews. We follow OWASP API Security guidance.

An OpenAPI or GraphQL schema, interactive documentation, example requests, a Postman collection and, where useful, client SDKs and a developer portal.

Ready to connect?

Let's Build the APIs that Hold Your Business Together

Tell us which systems need to talk to each other and we’ll propose an integration design, timeline and fixed-price estimate.

Or schedule a free consultation

Serving organizations across the world.

PakistanHQ · Lahore
Saudi ArabiaRegion
UAERegion
United KingdomRegion
United StatesRegion