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Developer tools · #openapi
Keep your API docs, server code, and client SDKs in sync by writing the OpenAPI spec first, generating stubs, and running contract tests. This post walks through a concrete example, trade‑offs, and a practical checklist for teams.
OpenAPI server variables let you abstract dev, staging, and prod URLs in one spec. This guide shows the minimal design, trust boundaries, and operational checks you need to keep the spec lean and clients reliable.
Step‑by‑step guide to locate and fix 404 or UI loading problems when accessing Swagger UI in Spring Boot with SpringDoc OpenAPI.
JHipster’s built‑in OpenAPI support automatically generates live API docs. This blog walks through setting it up, verifying the JSON endpoint, customizing metadata, and securing the docs in production.
Diagnose and fix HTTP 401 errors in OpenAPI-generated clients by verifying OAuth2 flow definitions, scope alignment, and security requirement applications.
Fastify lets you attach JSON Schemas to routes for early validation and auto‑generates OpenAPI docs with fastify‑oas. Learn how to set up schemas, test validation, customize errors, and weigh the trade‑offs for production APIs.
Learn how to eliminate duplicated schema definitions in OpenAPI by using the components section and $ref, with a concrete example and practical verification steps.
Configure Swagger UI to handle OAuth2 Authorization Code flow with PKCE, removing the need for manual token entry during API testing.
Learn how to add OpenAPI 3.1 Link Objects to your API spec so responses include discoverable URLs for related resources.
swagger
jhipster
fastify
yaml