API Inspector
Chrome DevTools Extension
A flip-through companion to this page — laid out like a devtools console.
API contracts change constantly during development. Fields disappear, types shift, new data appears — and the UI usually finds out only after it's already broken.
API Inspector installs as a DevTools panel that watches every JSON response and flags contract drift the moment it happens, before it turns into a debugging session.
Tracked APIs, statuses, and pending updates in one place.
Live JSON turned into structural schemas — no manual contracts.
Flags added, removed, and type-changed paths precisely.
Removed or changed fields are breaking; new fields are minor.
Nothing overwrites the saved baseline without review.
Every domain keeps its own isolated schema registry.
A Manifest V3 extension split into five layers, so capture, diffing, and rendering never tangle together.
Published on the Chrome Web Store in March 2026, giving frontend developers a local-first way to catch drift before it becomes a harder-to-trace UI bug.
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