Coding agents waste too much context before they understand a repo. They grep around the codebase, read large chunks, and make guesses. SIFS gives them fast local search. It runs as a CLI or MCP server. The default mode is hybrid search: BM25/semantic retrieval. Current benchmark: 63 large repos 19 languages 1,251 annotated search tasks index: 6.5 ms search: 0.376 ms SIFS is ahead of any comparable tool on this benchmark. Very open to feedback and issues/PRs! Let me know if you try it.