Show HN: Wn – find the files a bug touches, trained on 1.1M real fixes

Category: devtools

Tags: code-search, embeddings, git-history, cli, mcp, rust

Score: 7.8/10 (Innovation: 8, Technical: 8, Documentation: 8, Utility: 7)

where-next (wn) is a Rust CLI that uses a fine-tuned embedding model to answer 'where is X?' in a repo, ranking the top 3 files a bug fix would touch. It trains a per-repo adapter on your git history and ships as both a CLI and MCP server for AI coding agents.

Target audience: backend devs, AI coding agent users, devops

Repository: https://github.com/andreylukin/where-next · Rust · Apache-2.0 · 4 stars

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