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Developer Builds Universal Change-Detection Engine That Webhooks Only Diffs

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A developer has built a generic change-detection engine that monitors any URL — including JSON feeds, RSS/Atom feeds, and HTML pages — and emits only the data that has actually changed between runs. The tool fetches the source once per run, automatically detects content type, assigns stable item IDs, and computes content hashes to identify added, modified, or removed entries. Only changed items are pushed to a dataset and delivered via a batched webhook POST, eliminating redundant data transfers. To ensure no alert is silently lost, state is persisted only after a successful webhook delivery, and failed POSTs cause the run to retry the same changes next time. The engine is publicly available on the Apify Store and has been tested against live sources such as BBC News RSS, confirming zero false positives on unchanged runs.

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Developer Builds Universal Change-Detection Engine That Webhooks Only Diffs · ShortSingh