#92 · Primary category: Knowledge Base & RAG

xerj

ai-search ai-search-algorithms ai-search-engine ai-search-free ai-search-module ai-search-optimization ai-searchengine bm25-search elastic-search elasticsearch elasticstack graph-search graph-semantic-search hybrid-search hybrid-semantic-search search-api search-engine semantic-search vector-database vector-search

One-command autoindexing search engine for AI agents, Elasticsearch-compatible, using 40x fewer tokens than grep.

Project last updated:08/29/26

GitHub Stars

1.7K

Forks

241

Contributors

13

License

Apache-2.0

Why we included this project

Teams building AI agents against their own repositories often find the real bottleneck is turning scattered files into something an LLM can query without exhausting the context window. XERJ handles that step directly: run its autoindexer against a folder and it identifies each file type, runs source through tree-sitter so symbols and line numbers are preserved, and creates a search index per dataset it finds. Because the server speaks the Elasticsearch API, existing dashboards and client libraries work without modification, and the same index serves keyword, vector, and hybrid retrieval for RAG pipelines or long-lived agent memory. The whole thing is one static binary with no JVM or runtime dependencies, which keeps a self-hosted deployment simple. For teams that would rather have an agent ask questions about their data than feed it entire files, this is a practical fit.

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