XERJ is a high-performance, single-node search and memory engine for AI agents that speaks the Elasticsearch REST API.
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It uses automated, zero-config indexing to process local files—including code, documents, and logs—enabling agents to retrieve specific information without loading massive amounts of data into their context windows.
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Zero-config autoindexing of code, PDFs, logs, and structured data
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Elasticsearch 8.13 wire-protocol compatibility
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Hybrid keyword and semantic retrieval without external dependencies
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Isolated per-agent memory storage via the /_memory API
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AST-aware code indexing using tree-sitter
Freemium
Open-source single-node Community tier; Professional (HA) and Enterprise (Multi-region/Compliance) tiers are paid per-node or custom.
Best for
Reference coding, AI agent memory, security audits, and replacing heavy ELK stacks with a single lightweight binary.
Not ideal for
Use cases requiring massive horizontal sharding, distributed multi-node replication (in the community tier), or web crawling.
An exceptionally efficient engine for local AI development that significantly reduces context-window token waste by enabling precise retrieval over indexed local corpora.
Version v1.0.0-rc.95 released on 2026-10-12, adding OLE2 Office (.doc,.xls) support and versioning refinements.
As of
Is XERJ free?+
XERJ is Freemium. Open-source single-node Community tier; Professional (HA) and Enterprise (Multi-region/Compliance) tiers are paid per-node or custom. Check the official site for current plans.
Is XERJ open source?+
XERJ is not listed as open source on ai.dosa.dev - it is Freemium.
How much does XERJ cost?+
Open-source single-node Community tier; Professional (HA) and Enterprise (Multi-region/Compliance) tiers are paid per-node or custom. Pricing changes often - verify on the official site.
Who is XERJ best for?+
Reference coding, AI agent memory, security audits, and replacing heavy ELK stacks with a single lightweight binary.
Who is XERJ not ideal for?+
Use cases requiring massive horizontal sharding, distributed multi-node replication (in the community tier), or web crawling.
What are the best XERJ alternatives?+
The closest XERJ alternatives on ai.dosa.dev are Greptile, Fern, remio - all listed under AI Codebase Knowledge & Generation.
Who makes XERJ?+
XERJ is developed by XERJ. It is listed in the AI Codebase Knowledge & Generation category on ai.dosa.dev.
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