Change shouldn't be a surprise.

TrackChanges started from a simple frustration: an API you depend on changes without warning, and you find out only after something breaks in production. Most tools summarize what changed after the fact. TrackChanges is built differently, it verifies exactly what changed, cryptographically, the moment it happens, and tells you whether it actually matters.

Every stored version is hashed and immutable. Every diff is computed from real structural comparison, not a language model guessing at meaning. When accountability matters, that difference matters too.

Why it's deterministic

TrackChanges doesn't summarize documents with AI. It stores exact, SHA-256 verified copies of every version, computes structural diffs against the OpenAPI spec itself, and classifies severity using explicit rules, not inference. The result is reproducible: the same two versions always produce the same diff, every time.

Who it's for

Teams who depend on external or internal APIs and can't afford to be the last to know something changed. Increasingly, that includes AI agents that need to verify facts about an API's current shape rather than act on stale assumptions.