dupehound

What it does

dupehound finds the duplicate code AI agents create when they rewrite logic that already exists under new names. It fingerprints function structure (tree-sitter + MOSS winnowing), so renamed copies still match. Offline, deterministic, no AI. scan, history, CI gate.

• SC
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  Hey HN! We (Stephan and Thomas) recently open-sourced Semble. We kept running into the same problem while using Claude Code on large codebases: when the agent can't find something directly, it falls back to grep, reading full files or launching subagents. This uses a lot of tokens, and often still misses the relevant code. There are existing tools for this, but they were either too slow to index on demand, needed API keys, or had poor retrieval quality. Semble is our solution for this. It combines static Model2Vec embeddings (using our latest static model: potion-code-16M) with BM25, fused…

• CT
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