Custom REST APIs
Versioned endpoints, validation, authentication, authorization and explicit error contracts for web and mobile products.
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API development · integrations · Laravel · Python
APIs designed for what happens when systems disagree.
We build APIs and integrations for custom products that need reliable communication between applications, payment providers, CRMs, ERPs, data services and AI systems.
The difficult part of an integration is rarely the first successful request. It is authentication, duplicate events, retries, partial failures, rate limits, changing schemas and knowing what happened after something went wrong.
RESTcontracts · validation · versions
Webhookssignatures · retries · events
Secureauth · roles · limits
Observelogs · traces · failures
Integration engineering
Design for retries, duplicates and failure before they become production incidents.
Reliable APIs require clear ownership of data and side effects. We design contracts and workflows around idempotency, validation, authentication, error states and observability from the beginning.
Third-party integrations
Payments, CRM, ERP, marketing, data and operational systems connected without hiding failure states.
ExploreWebhooks & asynchronous workflows
Signed events, queues, retries, idempotency and reconciliation for operations that cannot depend on one synchronous request.
ExploreSecurity & observability
OAuth, tokens, rate limits, audit trails, structured logs and monitoring around integration health.
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Integrated execution
A reliable integration has an answer for what happens after the happy path fails.
We define retry behavior, ownership, reconciliation and monitoring so the business does not discover synchronization problems weeks later through a spreadsheet discrepancy.
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API architecture and contract design
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REST endpoints and authentication
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Third-party system integrations
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Webhook consumers and producers
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Idempotency and retry strategy
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Queue and background processing
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Logging, monitoring and audit trails
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Integration testing and documentation
Go deeper
Related capabilities.
Questions
What clients usually want to know.
Do you build both Laravel and Python APIs?
Yes. Laravel is often a strong fit for product and business APIs, while FastAPI can be useful for Python, data and AI services. The choice follows the responsibility of the service.
Can you integrate an existing application with a CRM, ERP or payment provider?
Yes. We first establish system-of-record ownership and synchronization rules, then design the integration around retries, duplicate events and recovery.
Do you document custom APIs?
Yes. Contracts, authentication requirements, important error states and integration behavior should be documented as part of the implementation.
Start with the business problem
Need two systems to behave like one product?
Show us the source systems, data ownership and operational workflow. We will design the integration around reliability rather than only the first successful API call.