API Integration / Custom Development

Custom API Development

Build an API around your platform processes, internal systems and external services — from requirements and data-exchange design through testing, documentation and launch.

API integration process
API
unified data exchange
Events
automated notifications
Systems
connecting existing solutions
Monitoring
scenario testing
Custom API

From requirements to production integration

Data exchange rules

Methods, fields, identifiers, statuses, errors and compatibility rules between connected systems.

Integration layer

Data transformation, request routing and coordinated operation of multiple systems.

Existing systems

Connecting internal services, databases, back office, player balances, CRM and other solutions.

Security and access

Access keys, request signatures, roles, IP restrictions and activity logs.

Post-launch monitoring

Availability, response time, errors and overall connection health checks.

Linked to documentation and integrations

A custom API is aligned with the documentation and modules already operating on the platform.

Development process
Overview

An API designed around project processes and architecture

A custom API is needed when an existing connector is not enough: systems may use different data formats, proprietary processes or specific security and reporting rules.

Work begins by documenting processes, data sources, operation states, system responsibilities and the expected outcome.

Agreed exchange format

Methods, fields, statuses, errors, identifiers and API update rules.

System connectivity

Protocol and data transformation between the platform, providers and internal services.

Post-launch support

Operational monitoring, transaction history, error diagnostics and ongoing integration support.

Development scope

What custom API development includes

This page is intended for platform owners and product, operations and technical teams that require a bespoke integration.

Integration scope

Analysis of existing APIs, databases, queues, file exchange and available connection methods.
Design of methods, data models, statuses, errors, identifiers and events.
Development of the integration layer, event notifications and synchronisation mechanisms.
Access protection, roles, retry handling, logging and operational monitoring.

Business scope

Description of user, financial, gaming and operational processes between systems.
Definition of the system of record for each data type and the rules for updating it.
Agreement on critical scenarios, restrictions, acceptance criteria and staged launch.
Documentation for development, support, analytics and operations teams.
Development process

How custom API development works

The process covers system analysis, agreement on the exchange format, development of the integration layer and controlled launch.

01

Requirements analysis

Systems, processes, data, constraints, possible errors and readiness criteria are documented.

02

API design

Methods, fields, statuses, events, access protection and compatibility rules are defined.

03

Development and testing

The integration layer is built, and test data, logging and project documentation are prepared.

04

Acceptance and launch

Joint testing, load assessment, monitoring configuration and staged enablement are completed.

Solution components

Custom API components

The solution depends on the connected systems, data volume, load and reliability requirements.

Core API

Methods for retrieving, creating and updating data with consistent request and response formats.

Event notifications

Transfer of changes between systems, authenticity verification and redelivery after temporary errors.

System connectivity

Data transformation and coordination between the platform and external and internal services.

Existing solutions

Connecting databases, file exchange, queues and internal services that do not have a modern API.

Access protection

Keys, signatures, roles, permissions, IP restrictions and regular secret rotation.

Duplicate protection

Unique operation identifiers, recognition of repeated requests and safe recovery.

Operation history

Requests, changes, statuses, staff actions and reasons for decisions.

Operational control

Availability, response time, errors, connection status and outage alerts.

Testing

What must be tested before launch

Testing covers data, duplicates, errors, security, load and joint acceptance across all connected systems.

Data formats

Required fields, data types, formats, statuses, errors and update compatibility.

Repeated requests

Repeated operation identifiers, already processed requests and recovery after a failure.

Delays and unavailability

Slow responses, dropped connections, temporary queues and safe process continuation.

Security

Invalid keys and signatures, IP restrictions, expired access and attempts to perform prohibited actions.

Load and resilience

Peak request volume, queues, response times and system behaviour during temporary performance degradation.

Acceptance scenarios

End-to-end business processes, data transfer, reporting, operation history and launch criteria.

Documentation

Development and integration documentation

Documentation defines the integration process, requirements, access protection, events, errors, testing and API-specific details.

FAQ

Questions about custom API development

What is a custom API?

It is an API designed for the specific processes, data and systems of a project when an existing connector is not sufficient.

Can a legacy system without a modern API be connected?

Yes. A dedicated integration layer can be created for a database, file exchange, queue or another available interface.

What documentation is created?

Methods, fields, access protection, statuses, errors, events, examples, test scenarios and operating rules are documented.

What happens after launch?

After launch, availability, errors and connection health are monitored. API changes go through approval and retesting.

Need an API for your own processes?

Send a description of the systems, processes, available connection methods, data, load and security requirements. APIACE will help define the solution scope and launch plan.