Compare two OpenAPI specifications side by side. Detect breaking changes, classify semver impact, and get actionable migration guides — instantly, in your browser.
Open the PlaygroundIdentifies 17 types of breaking changes including removed endpoints, type changes, removed enum values, and new required parameters.
Automatically classifies changes as MAJOR, MINOR, or PATCH and computes the next version number based on the spec's current version.
Every breaking change includes a step-by-step migration guide so your team knows exactly what to update in client code.
Paste two specs into the Playground and click Analyze. No install, no account, no API keys. Results in milliseconds.
Run diffs locally or in CI with one command.
Automatically diff your OpenAPI spec on every pull request and block merges on breaking changes.
No install required. Paste your specs and see what changed.