API Development
Robust APIs that connect your systems and scale with your business
We develop well-designed, documented and secure REST and GraphQL APIs. To integrate internal systems, expose data to partners, or power your mobile and web applications.
Benefits
Why Deepyze for your API Development?
We work with industry best practices to guarantee real results.
REST and GraphQL APIs
We design the right architecture for each case: REST for standard integrations and CRUD operations, GraphQL when clients need flexible and efficient queries.
Auto-generated docs (Swagger/OpenAPI)
The API ships with auto-generated interactive documentation. Any developer can explore endpoints, view parameters and test requests in real time.
Authentication and security (JWT/OAuth)
We implement JWT, OAuth 2.0 and API Key authentication. Role-based access control, HTTPS, input sanitization and protection against injection and common attacks.
Rate limiting and error handling
Abuse protection with configurable rate limiting. Consistent and descriptive error responses that simplify integration and debugging for consuming teams.
API versioning
We implement versioning strategies from day one so you can evolve the API without breaking existing integrations. Clients migrate at their own pace.
Automated testing
A unit and integration test suite covering critical endpoints. Tests run in CI/CD to guarantee every change doesn't break the API contract.
Process
How we build your API Development
A clear and transparent method so you always know which stage your project is at.
- 1
Contract design and scoping
We define resources, endpoints, data models and authentication flows. We document the API contract before writing a single line of code.
- 2
Backend development
We build the API with best practices: layer separation, error handling, logging and maintainable structure. We choose the tech stack based on context and requirements.
- 3
Security, testing and documentation
We implement authentication, rate limiting and security protections. We generate Swagger documentation and write the automated test suite.
- 4
Deployment and integration support
We deploy to production and support the team consuming the API during integration. We answer questions and adjust contracts if new requirements emerge.
Pricing
How much does it cost?
It depends on the scope: we define it together in a free discovery meeting and send you a fixed-price proposal.
FAQ
Frequently asked questions about API Development
How much does API development cost?
It depends on the scope: we define it together in a free discovery meeting and send you a fixed-price proposal.
What is an API in plain language?
An API is a 'translator' between systems. It lets your mobile app talk to your database, your online store connect with the logistics system, or an external partner access certain company data in a controlled way. Without a well-designed API, systems remain isolated.
How long does API development take?
An API with 10-20 endpoints, authentication and documentation takes 3 to 6 weeks. With external system integrations, complex business logic or high-scale requirements, the timeline is longer — we estimate precisely after the initial scoping session.
REST or GraphQL — which should I choose?
REST is the standard, most widely compatible option: ideal for most projects. GraphQL is better when you have multiple clients with different data needs (web and mobile consuming different data) or when you want to minimize over-fetching. We advise on which is right for your case.
Can the API connect to my existing system?
Yes. The API can act as an integration layer over your current systems: ERP, CRM, legacy database, external services. You don't need to replace anything — the API exposes your data in a modern, standardized way.
What if I need to change the API later?
We implement versioning from the start so changes don't break existing consumers. We also build with an architecture that facilitates extension. Adding or changing endpoints is a controlled process with no downtime.
Blog
Guides & resources
Practical articles to go deeper before you start your project.
- 12 Repetitive E-commerce Tasks You Can Automate in a Week Actionable list of 12 e-commerce processes any online store can automate in 5-10 days with N8N or Make. Real costs, integrations and patterns.
- Real Estate Automation: List a Property Once, Publish It Everywhere Real estate automation: publish to Zillow, Realtor.com and marketplace portals by loading each property once, with prices and leads always in sync.
- How Much Does It Cost to Integrate Two Systems That Don't Talk (2026 Pricing) What it costs to integrate two systems that don't talk: real USD ranges by type, what drives the price up and how to budget with no surprises.
- Automated Shipping Logistics: Tracking Without Humans Automate shipping logistics: connect Andreani, OCA, Correo Argentino and more into one centralized tracker with WhatsApp alerts. Cut support tickets by 60%.
- Automate bank reconciliation: how and with what tools Automate bank reconciliation: software, bank APIs, automatic transaction matching and when each option fits. Practical guide with real numbers.
- Microservices vs Monolith: What's Best for Your Custom System Microservices vs monolith without hype: when each fits your custom software, real costs, a decision table and why you should start with a monolith.
Products we built
Our own software, running in production
- Fixed price
- We quote with closed scope and price. You know what it costs from day one, no surprises.
- The code is 100% yours
- When we finish, the repository, the infrastructure and the documentation are entirely in your name.
- Same time zone
- We work South American business hours. Meetings and answers with no time-zone delays.
- Proposal in 24-48 h
- After the first meeting you get a detailed written proposal, with no commitment and no fine print.
Damián Oliva
Founder of Deepyze
You work directly with the person who builds. Years building digital products in LATAM, Google Cloud Machine Learning certified.
Meet the founderReady to start your API Development project?
Tell us your idea and we'll prepare a no-commitment proposal in 24 hours.