{custom apis}
APIs that other teams enjoy using.
We design clear, secure and well-documented APIs that power your applications, your partners or your own product. Stable contracts, versioning and solid performance from the very first endpoint.
// keycode systems
export default defineService({
name: "Custom APIs",
stack: ["REST", "GraphQL", "OpenAPI"],
owner: "your company",
docs: true,
tests: true,
}){what's included}
Everything you need, end to end.
01
Contract design
Resources, endpoints and models defined with OpenAPI before writing code, and reviewed with you.
02
REST or GraphQL
We choose the approach that fits the people consuming the API, not whatever is trending.
03
Authentication and permissions
OAuth 2.0, API keys, JWT and role- and resource-based access control.
04
Interactive documentation
A documentation portal with examples ready to try.
05
Performance and limits
Caching, pagination, rate limiting and optimized queries.
06
Testing and versioning
Automated contract tests and versions that don't break existing integrations.
{use cases}
Problems we solve all the time.
- A single backend for your website and your mobile app.
- A public API so partners and customers can integrate with you.
- Modernizing a legacy system by exposing it through a clean API.
- Internal services that share data across departments.
{process}
A clear process, no surprises.
You always know what we're working on, why, and when you'll see it.
01
Discovery
We learn your business, your workflows and the real problem. Then we define scope, priorities and budget.
02
Design
Technical architecture, user flows and a clickable prototype before a single line of code.
03
Development
Short sprints with frequent demos. You see real progress, not status reports.
04
Launch
Testing, automated deployments and a smooth go-live.
05
Evolution
Support, improvements and new features as your business grows.
{faq}
Questions we often get.
REST or GraphQL?
REST is simple, cacheable and universal; GraphQL shines when many different clients need tailored data. We'll recommend one based on who will consume the API.
Can you build on top of our current database?
Yes. We can build the API on your existing data and migrate gradually, without a big-bang switch.
Where is the API hosted?
Wherever fits best: your cloud (AWS, Google Cloud, Azure), managed platforms like Vercel, or your own servers.
How do you ensure security?
With robust authentication, strict input validation, encryption in transit, access logs and security reviews before every release.
{other services}
Everything connected, one team.
Integrations
We connect your CRM, ERP, e-commerce, payment gateways and internal tools so data flows on its own. Less manual work, zero duplicate records.
View service
Web applications
Dashboards, customer portals and internal tools. Fast, accessible and easy to maintain.
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SaaS platforms
Multi-tenancy, subscriptions, roles and billing. From MVP to production without a rewrite.
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Mobile apps
Native iOS and Android apps from a single codebase, connected to your backend.
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AI agents
LLM-powered assistants and agents connected to your systems and documents: they answer customers, query your ERP or CRM and carry out tasks, with human oversight where it matters.
View service
AI automation
We extract data from invoices, PDFs and emails, classify requests and route them into your systems with no manual typing.
View service
{contact}
Have a project in mind?
Tell us what you need. We'll get back to you with focused questions, a proposed approach and an initial estimate.
- Keycode Systems ↗