Custom Software Development
APIs Designed to Be Secure and Dependable.
We design, build and document REST and GraphQL APIs for companies that need their products, apps and partners to exchange data reliably.
Overview
What API Development covers.
API development means designing and building the interfaces other software uses to read and write your data or trigger your services. A good API powers your own web and mobile apps, opens your platform to partners, and replaces fragile file exports or screen scraping between systems.
Rankbrain treats an API as a product with consumers. We agree on the contract first, covering resources, naming, errors and versioning, then implement it with authentication, rate limiting, automated tests and clear documentation so internal developers and external partners can integrate without guesswork.
Problems we solve
What this fixes.
- 01
Systems that cannot share data
Without an API, teams rely on manual exports, CSV uploads or fragile scripts to move information between systems.
- 02
Inconsistent, undocumented endpoints
APIs that grew without a plan are hard to use, break clients when they change and slow every new integration.
- 03
Security gaps in data access
Weak authentication, missing permission checks or no rate limits can expose sensitive data and invite abuse.
Scope of work
What’s included.
Secure, documented REST and GraphQL APIs that let your apps, partners and systems share data.
- 01
API design and contract
Resource models, endpoints or schemas, error formats and versioning agreed and documented before build.
- 02
REST and GraphQL implementation
We choose the style that fits your consumers and build it with consistent, predictable behavior.
- 03
Authentication and authorization
API keys, OAuth or token-based access with permission checks scoped to each client and role.
- 04
Webhooks and event delivery
Outbound notifications so connected systems can react to changes without constant polling.
- 05
Testing, monitoring and documentation
Automated tests, error and latency monitoring, and OpenAPI or schema-based reference docs.
Benefits
What it can do for your business.
Ideal for
- Back ends for web and mobile apps
- Platforms opening access to partners
- Replacing manual exports between systems
- Modernizing a legacy or undocumented API
Faster integrations
A clear, documented contract can shorten the time it takes your team or partners to connect.
Safer data access
Consistent authentication and permission checks help protect data as more clients connect.
Room to evolve
Versioning and tests let you change the API without breaking the apps that depend on it.
How we deliver it
A clear, practical process.
- 1
Consumer Discovery
Identify who will call the API, what data they need and the security requirements.
- 2
Contract Design
Write and review the specification with stakeholders before implementation.
- 3
Build and Test
Implement endpoints with automated tests, authentication and rate limits.
- 4
Document and Release
Publish docs, deploy with monitoring and support the first integrations.
Related services
Works well alongside.
- Web DevelopmentWeb IntegrationsWebsite connections to CRM, payments, booking, email marketing and analytics tools.
- Custom SoftwareCloud SystemsScalable cloud architecture, DevOps and hosting on AWS, GCP and Vercel for reliable software.
- AI IntegrationAI API IntegrationSecure, reliable connections between AI model APIs and your platforms and backend services.
Questions
API Development questions, answered.
Should we use REST or GraphQL?
REST suits most public and partner APIs because it is widely understood and easy to cache. GraphQL can work better when front ends need flexible queries across related data. We recommend based on your consumers.
Is this the same as connecting our website to other tools?
Not quite. Web integrations connect a site to existing services such as payments or a CRM. API development is designing and building your own API that other software connects to.
Can you document or improve an existing API?
Yes. We can audit current endpoints, write an OpenAPI specification, close security gaps and plan a versioned path to a cleaner design.
Ready to talk about API Development?
Tell us about your business and goals, and we’ll recommend a clear, practical plan.