Home/ Part XIII — Expert Mode: Systems, Agents, and Automation/41. Advanced RAG (Beyond the Basics)/41.2 Metadata filtering and access control

41.2 Metadata filtering and access control

Overview and links for this section of the guide.

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Metadata Filtering

// Filter before or during vector search
const results = await vectorSearch({
  query: embeddedQuery,
  filter: {
    department: { $eq: 'engineering' },
    year: { $gte: 2023 },
    status: { $in: ['published', 'approved'] }
  },
  limit: 10
});

Access Control

// Access control at query time
async function searchWithACL(query: string, user: User) {
  const allowedDocs = user.permissions.flatMap(p => p.documentIds);
  
  return vectorSearch({
    query: embed(query),
    filter: {
      $or: [
        { visibility: 'public' },
        { id: { $in: allowedDocs } },
        { department: { $in: user.departments } }
      ]
    }
  });
}

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