[All skill tests](https://jobicy.com/tests.md) Skill assessment # API Reference Documentation Design Skills Test This test evaluates the ability to create accurate, usable API reference documentation for developers. It focuses on endpoint descriptions, request and response details, authentication, errors, and maintainable documentation practices. [Start the test](#test-start) Share Assessment setup Ready ## Choose the level that matches your current experience. * 01 Basic Available * 02 Intermediate Available * 03 Advanced Available Instant result Review your score after submission 20–30 Questions per assessment 15–45 min Estimated completion time 3 levels Choose your difficulty Technical Writing [View category](https://jobicy.com/test-category/technical-writing.md) Start assessment ## Choose your level and begin. Answer without outside help so the result reflects your current knowledge. You will see your score after completing the selected assessment. Technical writing includes API reference documentation, software installation guides, release notes, architecture decision records, troubleshooting articles, and user-facing product documentation. This assessment focuses on API reference documentation design, a widely used specialty that helps developers integrate services reliably, diagnose failures, and understand system behavior without unnecessary support requests. Basic Intermediate Advanced This is a demo version of the test. You may attempt up to 3 questions. To take the full test and save your results, please [log in](https://jobicy.com/dashboard-page.md) or [create an account](https://jobicy.com/dashboard-page#tab2.md). This is a demo version of the test. You may attempt up to 3 questions. To take the full test and save your results, please [log in](https://jobicy.com/dashboard-page.md) or [create an account](https://jobicy.com/dashboard-page#tab2.md). This is a demo version of the test. You may attempt up to 3 questions. To take the full test and save your results, please [log in](https://jobicy.com/dashboard-page.md) or [create an account](https://jobicy.com/dashboard-page#tab2.md). Test details ## Know what to expect. Review the instructions, covered skills, example question themes, and intended audience before beginning. 01 ### Instructions and covered skills Read each scenario carefully before selecting a response. Focus on what a developer needs to make a successful and predictable API call. Consider accuracy, consistency, and the consequences of ambiguous documentation. Do not rely on assumptions that are not stated in the question. Stay focused and avoid interruptions while completing the assessment. Review your selected responses before submitting. ### Key Areas This assessment covers the practices used to produce dependable API reference documentation. Candidates work with endpoint summaries that state a resource action and expected outcome, then organize request details so developers can distinguish path parameters, query parameters, headers, and request bodies. Strong documentation identifies whether values are required, optional, conditional, or mutually exclusive, while also describing accepted formats, ranges, defaults, and meaningful constraints. The assessment also addresses authentication, authorization, pagination, filtering, sorting, rate limits, idempotency, versioning, and asynchronous operations. These topics require documentation that explains observable behavior rather than merely naming a feature. For example, a pagination section should clarify how a client obtains the next page, and an idempotency section should explain the effect of repeating a request with the same key. Response documentation is another central area. Candidates should be able to describe response fields, nested objects, enums, nullable values, timestamps, identifiers, and links between resources. Error documentation should pair HTTP status codes with machine-readable error codes, likely causes, and practical recovery actions. Examples should be syntactically valid, aligned with the documented schema, and safe to copy after replacing clearly marked sample values. ### Recommended Preparation Review API reference pages for REST-style services and compare each endpoint’s purpose, method, path, authentication requirements, inputs, outputs, and errors. Practice turning implementation details into concise developer-facing descriptions. Examine JSON payloads for field types, required properties, allowed values, and relationships between objects. Pay close attention to distinctions such as omitted versus null values, collection versus single-resource responses, and authentication versus authorization failures. Prepare by reviewing HTTP methods and status codes in realistic integration scenarios. Practice documenting a create operation, an update operation, a search operation, and a paginated list operation. For each one, write a request example, a response example, and several error cases that accurately match the contract. Finally, check for terminology consistency across endpoint names, parameter tables, examples, and error descriptions so that the reference remains reliable as the API evolves. 02 ### Examples of questions 1. What information should an endpoint summary communicate? 2. How should a required query parameter be identified in a reference entry? 3. What is the most useful way to document a paginated response? 4. When should an API reference include a request example? 5. How should a documentation page distinguish an omitted field from a null field? 6. What details make an error-code entry actionable for an integrator? 7. Why should response field descriptions state format constraints? 8. How should an endpoint document an idempotency key? 9. What should a rate-limit section explain to API consumers? 10. How can a reference page show the relationship between a resource and its identifier? 03 ### Who this test is best for Technical writers, developer advocates, documentation specialists, product engineers, API designers, and support professionals who create or maintain developer documentation. Related assessments ## Continue with a similar skill test. Explore assessments from the same professional area to compare adjacent skills and build a broader picture of your knowledge. [Content Writing & Editing 3 levelsSEO Content Brief and Search Intent Mapping Skills TestAssess the ability to translate search behavior, keyword research, and audience needs into actionable SEO content briefs. 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