Developer Builds AI Agent Skill to Automate npm Dependency Upgrade Analysis

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A developer describes turning a tedious routine of reviewing dependency changelogs for breaking changes into an automated tool. The idea started as a web-based summarizer for article reading, which was adapted to compare two package versions and list breaking changes. Its main limitation was that it could not see the project's files, so it could not tell whether a given breaking change actually affected the codebase. Converting it into an AI agent skill integrated into the development environment solved this by reading versions from package.json and checking compatibility against project declarations. The skill later expanded to handle monorepos, where version requirements can differ across packages, leading to a semi-grouped report format.

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