Observed arrival · 2026-10-10
DiffHaven keeps API contract review in the browser
A browser-based workspace for comparing OpenAPI JSON versions and preparing a release checklist.
○Open
⊠Login
$Paid
†Ads
✦Pretty
●Pro
◎Niche
◉Human
⚑Risk
ƒJS
- For
- Teams reviewing OpenAPI changes before release
- Worth noticing
- It checks targeted OpenAPI 3.0 and 3.1 JSON changes and says unsupported schema areas are disclosed in review warnings.
Field notes
The described workflow starts with two contract versions and traces each finding to JSON Pointer evidence, so reviewers can inspect the before-and-after rather than rely on a label alone. The page says suggested tests and migration actions can be exported as Markdown or JSON; its parcel example is explicitly illustrative, not a result from an actual analysis.
Observed signals
Read the marks
Editorial observations of this landing page, not a rating.
○OpenPublic substance visible
✦PrettyNotable craft visible
●ProPolished or operationally mature
◎NicheUnusually specific use
One card from the complete issue