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Now Source Available: The Engine Powering MongoDB Search

January 15, 2026

What it is: 

mongot is the Lucene-based engine that powers MongoDB Search and Vector Search. The source code is now available licensed with the Server Side Public License (SSPL) in a public Github repository. This process manages text and vector indexes, executing $search, $searchMeta, and $vectorSearch stages to return metadata and relevant document ID hits for the core database to retrieve.

 

Who it’s for: 

This release is for engineering teams and developers who require a unified search experience across Atlas, on-premise, and hybrid environments. It also serves teams managing sensitive workloads that require source code inspection for deep auditability and debugging.

 

Why it matters: 

Source availability provides users with the flexibility to modify and build the search engine for specific environmental constraints while ensuring transparency into query execution. This allows teams to maintain consistent search capabilities and standardized implementations across any deployment environment.

 

How to get started: 

Users can access and explore the codebase through the public GitHub repository.

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Now Source Available: The Engine Powering MongoDB Search