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I Replaced grep-Based Code Review with a Knowledge Graph + MCP. Here Are 3 Bugs Vector Search Missed.

This story is from 2026-08-30. It is preserved in the archive; the latest stories are on the live feed.

For about a year, my AI code review setup looked like this: AI gets a PR, AI greps for related code, AI reads way too many files, AI says "looks fine." It mostly worked. Until the bugs that didn't show up in grep started shipping. The problem wasn't the model. It was the retrieval. Vector search an…

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  1. 2026-08-30 06:41 · DEV Community — AI
    I Replaced grep-Based Code Review with a Knowledge Graph + MCP. Here Are 3 Bugs Vector Search Missed.

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