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8 pages in this section.
Why an API is a contract independent of its implementation, how that contract shapes URLs, status codes, and error shapes, and why breaking it quietly is more costly than any internal refactor.
Learn fundamental API design principles for Node.js backends, covering resource-oriented URLs, consistent JSON envelopes, and proper HTTP status codes.
Learn how OpenAPI 3.x describes HTTP APIs and Swagger UI renders specs. Explore code-first generation with Zod and spec-first YAML implementation.
Implement consistent API error responses using RFC 9457 Problem Details. Learn to structure errors with stable codes and i18n keys for better client handling.
Implement robust pagination and filtering for API list endpoints. Learn to use cursor and offset pagination, and add filtering for various data types.
Learn API design best practices for Node.js HTTP APIs, covering resource design, request/response shapes, and error handling for predictable integrations.
A single-page roundup of every highlight bullet from the 7 pages in the API Design section, grouped by source page so you can scan all 28 takeaways without opening each article individually.