APIs your applications can build on.
When a website, app or AI tool needs access to data and functions, the interface needs clear rules. We design and develop APIs with documented behaviour, appropriate permissions and traceable failures.
A connection needs to work in everyday use.
A customer portal shows an outdated status. A mobile app sends the same request twice. An AI assistant needs to read information but must not change customer records. APIs determine which data and actions these applications can access. We develop a clear interface contract covering inputs, responses, permissions and what happens when something goes wrong.
Dependable handovers support new functionality.
A shared interface can reduce manual handovers and give teams a dependable basis for new features. Quality shows in consistent data, understandable errors and useful documentation. Reusable integrations can save development effort; the amount depends on existing systems and their use. We therefore agree which workflows should improve and how to assess the .
A service request shows what needs to be defined.
Illustrative workflow: a portal passes a request to an existing CRM and displays its status. The API design needs to cover more than a successful transfer.
What does each field mean?
Required fields, formats and status values are described clearly. The portal needs to distinguish between a request being received and being processed by the service team.
What happens after an interruption?
A timeout may trigger another attempt. We define how to avoid duplicate records and how failed transfers can be identified and retried.
Who can access each request?
Being signed in is not sufficient authorisation. Access needs to be checked for each record and action, for both people and applications.
How do changes stay usable?
Documentation, examples and tests describe the agreed behaviour. Changes are planned with consuming teams so existing applications do not unexpectedly lose functionality.
A first API scope you can test and hand over.
We begin with one data object or workflow and the applications that need it. Before implementation, we agree access, test data, acceptance criteria and responsibilities.
An interface contract and test version
We describe the data model, functions, responses and failure handling. The agreed API is tested with the participating applications in an appropriate environment.
Documentation for operations
You receive usage examples, test results and open issues. Monitoring, credential management and version changes are agreed with your team or operating partner.
Give AI applications specific access.
An assistant can use the same clearly bounded interfaces as other applications. We distinguish read access from actions that change data, validate inputs and define approvals for critical steps. This makes it possible to assess which tasks can be automated and which still require a human decision.
How we deliver
Identify use cases
We establish which data and actions need to pass between which systems. Ownership, data quality and existing interfaces form part of the assessment.
Describe the interface
We agree data formats, functions and error responses, for example in an OpenAPI or GraphQL description. Participating teams can align their work with it.
Develop and test
We implement access rules, input validation and suitable limits. Tests cover normal workflows as well as errors, retries and failures in dependent systems.
Document usage
We document setup, examples and interface limits. Additional resources such as test requests or SDKs are agreed to suit the teams using the API.
Plan operations and changes
We define monitoring, responsibilities and version management. Changes are coordinated with connected teams and checked for compatibility.
Your questions about working together
Sources and technical context
- OpenAPI Specification
A standard for describing HTTP APIs, supporting an interface contract that teams can review together.
- OWASP: API Security Top 10
Guidance on API risks, including missing authorisation checks and unrestricted resource use. The review scope is defined for each application.
Which data or functions need to become accessible?
Tell us about the applications involved and one specific workflow. We will review existing interfaces and identify an appropriate first development scope.
Discuss your API project