Reference · Glossary

Metadata filter (vector search)

Last updated Jul 17, 2026

Restrict similarity search to chunks matching **tags** — tenant, date, doc type — before ranking vectors.

#When to use

Multi-tenant RAG, “search only HR policies,” versioned doc sets.

When metadata is wrong or missing — filters hide the right chunks silently.

`filter: { department: "legal" }` then embed similarity on the subset.