App DevelopmentBased in Dhaka · Serving worldwide

Best API Development & Integration Service in Bangladesh

Every app, website, and internal tool eventually needs to talk to something else: a payment processor, a CRM, another team's system, or an API of its own. Framecipher builds and integrates APIs for startups and businesses in Dhaka, and for clients across the US, UK, Australia, Canada, and UAE, so that data actually moves correctly between systems instead of breaking quietly somewhere in the middle.

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Scope of work

What we deliver

A practical breakdown of the strategy, production, and technical work included in this service.

01

API STRATEGY & DESIGN

Before any endpoint gets built, we map out what the API actually needs to expose and to whom. An API designed without thinking about versioning is an API that breaks its own consumers the first time it needs to change.

  • API Architecture Planning: REST or GraphQL, chosen based on what your data structure and consumers actually need.
  • Endpoint & Resource Design: Structuring endpoints around clear, predictable resources, not an ad-hoc collection of routes.
  • Authentication Strategy: API keys, OAuth, or token-based auth, matched to who's consuming the API and how.
  • Rate Limiting & Versioning Planning: Deciding how the API handles load and future changes before either becomes a live problem.
02

CUSTOM API DEVELOPMENT

Building the API itself clean, documented, and built to be consumed by people who aren't you. An undocumented API is an API only its original developer can actually use.

  • REST or GraphQL API Development: Clean, well-structured endpoints built around your actual data model.
  • Authentication & Authorization: Secure access control, scoped correctly to what each consumer should actually be able to do.
  • Data Validation & Error Handling: Meaningful error responses instead of a generic failure that leaves the consumer guessing.
  • API Documentation: Clear, usable documentation so whoever consumes the API, your own team or an external partner isn't reverse-engineering it.
03

THIRD-PARTY INTEGRATION

Connecting your systems to the tools and services your business already depends on. Most third-party integrations fail quietly at the edges of a webhook that stops firing, a rate limit hit during a traffic spike, which is exactly where we focus testing. TESTING, MONITORING & RELIABILITY An integration that works today needs to keep working as the systems on either end change. A payment integration that fails silently during a traffic spike is a worse outcome than one that fails loudly and gets fixed fast.

  • Payment Gateway Integration: Stripe, PayPal, bKash, Nagad, or other processors, connected and tested against real transaction scenarios.
  • CRM & Marketing Platform Integration: Connecting your website, app, or internal tools to HubSpot, Salesforce, or similar platforms.
  • ERP & Business System Integration: Linking custom applications to accounting, inventory, or operations systems already in use.
  • Webhook Implementation: Real-time data sync built to handle retries and failures, not just the happy-path notification.
  • Integration Testing: Testing against real API behavior, including error responses and edge cases, not just successful calls.
  • Load & Performance Testing: Confirming the API or integration holds up under real traffic volume, not just a light demo load.
  • Uptime & Error Monitoring: Alerting set up so a failed integration gets caught in minutes, not discovered by a customer.
  • Retry & Fallback Logic: Built-in handling for when a third-party service is temporarily unavailable.
04

ONGOING SUPPORT & MAINTENANCE

APIs and the systems they connect to both keep changing after launch. Available as a separate ongoing service - see our [App Maintenance & Support] page for full details, since this isn't included by default in a development engagement.

  • API Version Updates: Keeping custom APIs current as your product or data model evolves.
  • Third-Party API Change Monitoring: Tracking when connected services update or deprecate their own APIs, before it breaks your integration.
  • Performance Monitoring: Ongoing tracking of response times and error rates as usage grows.
  • Security Patching: Keeping authentication and dependency layers current and patched.

The business case

Why this matters

The systems your business runs on are only as reliable as the connections between them.

Silent Failures Are the Real Risk

A crashed system gets noticed immediately. A silently failing integration can drop data for days before anyone catches it, that's the failure mode worth designing against.

Third-Party APIs Change Without Asking

Payment processors, CRMs, and other platforms update their own APIs on their own schedule. An integration that isn't monitored for those changes eventually breaks without warning.

A Well-Designed API Is a Long-Term Asset

An API built with clear structure and documentation gets adopted and extended easily. One built as an afterthought becomes something every future developer has to work around.

Reliability Compounds Trust

Payment processing, data sync, and system integrations touch the parts of your business customers actually notice when something goes wrong.

Why Frame Cipher

Built for accountable delivery

API Strategy & Design

Endpoint structure, authentication approach, and versioning strategy planned before development starts.

Custom API Development

Clean, documented REST or GraphQL APIs built around your actual data model.

Third-Party Integration

Payment, CRM, ERP, and webhook connections built and tested against real-world conditions.

Testing & Reliability Engineering

Load testing, error handling, and retry logic built in, not bolted on after something breaks.

Monitoring & Alerting

Visibility into API and integration health before your customers have to report a problem.

Transparent Process

Approval checkpoints at every stage, nothing built without you seeing it first.

Delivery process

A clear path from brief to result

Each stage has a defined outcome and review point, so you always know what is happening next.

  1. Step 01

    Initial Consultation

    We talk through what the API needs to expose, or what systems need to connect, and why.

  2. Step 02

    Strategy & Architecture Planning

    Endpoint structure, authentication, and versioning approach, defined before development starts.

  3. Step 03

    Development & Integration

    Custom API development or third-party connection work, with documentation built alongside the code, not after.

  4. Step 04

    Testing & Reliability Review

    Integration testing, load testing, and failure-scenario testing before anything goes live.

  5. Step 05

    Launch & Monitoring Setup

    We deploy, confirm data is flowing correctly, and set up monitoring so issues get caught early.

Pricing guide

Clear scope before commitment

API and integration pricing depends on whether you need a custom API built from scratch, a third-party integration, or both, along with how many systems are involved and how complex the data flow is.

Single Integration

Starting Price
৳60,000
What Drives the Cost
One third-party service, standard authentication, basic testing
Typical Delivery
~1–2 weeks

Custom API (Standard)

Starting Price
৳150,000
What Drives the Cost
REST or GraphQL API, moderate endpoint count, documentation included
Typical Delivery
~3–5 weeks

Multi-System Integration

Starting Price
৳280,000
What Drives the Cost
Multiple third-party systems, webhook handling, retry logic
Typical Delivery
~5–8 weeks

Complex / Enterprise Integration

Starting Price
Custom Quote
What Drives the Cost
High-volume data sync, multiple legacy systems, custom compliance needs
Typical Delivery
~8+ weeks

Prices shown are a guide. Your proposal confirms the final scope, fee, and delivery schedule before work begins.

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Delivery details

Local context, global standards

Coverage

Dhaka-based, worldwide delivery

Framecipher is based in Dhaka and builds APIs and integrations for businesses across Bangladesh and clients in the UAE, US, UK, Australia, and Canada, 20+ countries so far. Payment platforms, compliance requirements, and common third-party systems vary by region, and integration work accounts for that instead of assuming one market's toolset applies everywhere.

For businesses in Bangladesh, that often means integrating bKash, Nagad, or local banking APIs alongside international services, a mix that international-only integration experience tends to miss.

Schedule

Timeline & duration

Most API and integration projects run 1 to 8+ weeks, with the number of systems involved and the complexity of the data flow setting the pace more than the visible scope suggests. A single third-party integration moves fastest. Multi-system integrations with webhook handling and retry logic take longer.

Projects move faster when API documentation for third-party systems is available upfront and credentials/access are provided early; most delays in integration work come from waiting on access to the systems being connected, not the development itself.

Accountability

Review & approval

Every stage architecture, development, testing, goes through your review before we move forward. Nothing reaches launch without your sign-off.

We don't guarantee a third-party API will never change or fail on its own end, since that's outside any developer's control. What we guarantee is an integration built with error handling, retries, and monitoring in place, so when something on the other end does fail, it's caught and handled instead of silently dropping data.

FAQ

Common questions, answered

Do you build custom APIs, or just connect to existing ones?+

Both, custom API development for your own product or internal use, and integration work connecting to third-party services like payment processors, CRMs, or ERPs.

What happens if a third-party API we depend on changes or goes down?+

We build retry logic, fallback handling, and monitoring into integrations from the start, so a temporary outage gets caught and handled instead of silently failing. For ongoing changes to a connected service's API, that's covered under maintenance.

Do you provide API documentation?+

Yes, documentation is built alongside custom API development, not treated as an afterthought, so your team or external partners can actually use what's been built.

Can you integrate local Bangladeshi payment systems like bKash or Nagad?+

Yes, bKash, Nagad, and similar local payment integrations are part of our regular integration work, alongside international payment platforms where a project needs both.

Do you work with clients outside Bangladesh?+

Yes, alongside Bangladeshi businesses, we build and integrate APIs for clients in the US, UK, Australia, Canada, and UAE.

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