The ApiNotes Blog
Guides, product updates, and practical resources on OpenAPI, Swagger, and the tooling around them — from the team building ApiNotes.
Use AI to design your API as an OpenAPI spec first. Copy-paste prompts, validate the AI's output for hey-api and Quicktype, feed errors back to fix it, generate code, push to GitHub and deploy on DigitalOcean.
Third-party APIs change without telling you. Learn how to monitor API changes automatically by diffing OpenAPI specs, and get emailed before a change breaks your integration.
A practical guide to validating an OpenAPI spec — what validation actually checks, how to read the errors, and how to confirm your spec survives OpenAPI Generator and Azure API Management before you ship it.
Learn practical API design principles across the full lifecycle: design, document, test, and publish with confidence.
I analyzed 7,039 OpenAPI spec errors and summarized the most common ones with broken examples, fixed snippets, and references.
Compare two OpenAPI specs and catch breaking changes before release: removed fields, narrowed enums, changed types. Free diff tool, no signup, CI-ready.
Validate your OpenAPI spec before generating SDKs or server stubs. Catch schema errors, missing refs, and invalid examples early so code generation does not fail later.
Bruno doesn't have a built-in mock server. Learn how to generate mock APIs from OpenAPI specs and export to Bruno for a complete local testing workflow.
Publish modern API documentation from any OpenAPI (Swagger) spec in one minute. No account or setup needed.
A concise explanation of Swagger and the OpenAPI ecosystem, tooling, benefits, and best practices.
A practical summary of every major change in the OpenAPI Specification 3.2.0 — new fields, new HTTP methods, streaming support, and what it means for your API tooling.
Instantly generate and publish API docs from your OpenAPI spec. No signup or install required. Paste your spec, preview live docs, and share in 60 seconds.
Learn the critical differences between API throttling and rate limiting. Discover when to use each technique, implementation strategies, and best practices for controlling API traffic flow.