Filter memories using container tags and metadata. The filtering system uses SQL query construction, so you need to structure your filters like database queries.

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Filter by Container Tags

Container tags use exact array matching - memories must have the exact same tags in the same order. 
// Single tag - matches memories with exactly ["user_123"]
const userMemories = await client.memories.list({
  containerTags: ["user_123"]
});

// Multiple tags - matches memories with exactly ["user_123", "project_ai"]
const projectMemories = await client.memories.list({
  containerTags: ["user_123", "project_ai"]
});

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Metadata Filtering with SQL Logic

The filters parameter allows filtering by metadata fields using SQL-like query structures. Since we use SQL query construction in the backend, you need to structure your filters like database queries with explicit AND/OR logic.

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Why This Structure?

In SQL databases, AND has higher precedence than OR. Without explicit grouping, a query like: 
category = 'programming' OR framework = 'react' AND difficulty = 'advanced'
Is interpreted as: 
category = 'programming' OR (framework = 'react' AND difficulty = 'advanced')
The JSON structure forces explicit grouping to prevent unexpected results.
Filter Structure Rules:
  • Always wrap conditions in AND or OR arrays (even single conditions)
  • Use JSON.stringify() to convert the filter object to a string
  • Each condition needs key, value, and negate properties
  • negate: false for normal matching, negate: true for exclusion

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Simple Metadata Filter

// Filter by single metadata field
const programmingMemories = await client.memories.list({
  filters: JSON.stringify({
    AND: [
      { key: "category", value: "programming", negate: false }
    ]
  })
});

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Multiple Conditions (AND Logic)

// All conditions must match
const reactTutorials = await client.memories.list({
  filters: JSON.stringify({
    AND: [
      { key: "category", value: "tutorial", negate: false },
      { key: "framework", value: "react", negate: false },
      { key: "difficulty", value: "beginner", negate: false }
    ]
  })
});

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Alternative Conditions (OR Logic)

// Any condition can match
const frontendMemories = await client.memories.list({
  filters: JSON.stringify({
    OR: [
      { key: "framework", value: "react", negate: false },
      { key: "framework", value: "vue", negate: false },
      { key: "framework", value: "angular", negate: false }
    ]
  })
});

​
Complex Nested Logic

// Complex logic: programming AND (react OR advanced difficulty)
const advancedContent = await client.memories.list({
  filters: JSON.stringify({
    AND: [
      { key: "category", value: "programming", negate: false },
      {
        OR: [
          { key: "framework", value: "react", negate: false },
          { key: "difficulty", value: "advanced", negate: false }
        ]
      }
    ]
  })
});

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Array Contains Filtering

Filter memories that contain specific values in array fields like participants, tags, or team members.

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Basic Array Contains

// Find memories where john.doe participated
const meetingMemories = await client.memories.list({
  filters: JSON.stringify({
    AND: [
      {
        key: "participants",
        value: "john.doe",
        filterType: "array_contains",
        negate: false
      }
    ]
  })
});

​
Array Contains with Exclusion

// Find memories that don't include a specific team member
const filteredMemories = await client.memories.list({
  filters: JSON.stringify({
    AND: [
      {
        key: "reviewers",
        value: "external.consultant",
        filterType: "array_contains",
        negate: true  // Exclude memories with external consultants
      },
      {
        key: "project_tags",
        value: "internal-only",
        filterType: "array_contains",
        negate: false
      }
    ]
  })
});

​
Multiple Array Contains (OR Logic)

// Find memories involving any of several team leads
const leadershipMemories = await client.memories.list({
  filters: JSON.stringify({
    OR: [
      {
        key: "attendees",
        value: "engineering.lead",
        filterType: "array_contains"
      },
      {
        key: "attendees",
        value: "product.lead",
        filterType: "array_contains"
      },
      {
        key: "attendees",
        value: "design.lead",
        filterType: "array_contains"
      }
    ]
  }),
  sort: "updatedAt",
  order: "desc"
});

​
Combined Container Tags + Metadata Filtering

const filteredMemories = await client.memories.list({
  containerTags: ["user_123"],
  filters: JSON.stringify({
    AND: [
      { key: "category", value: "tutorial", negate: false },
      { key: "framework", value: "react", negate: false }
    ]
  }),
  sort: "updatedAt",
  order: "desc",
  limit: 50
});
Common Mistakes:
  • Using bare condition objects: {"key": "category", "value": "programming"}
  • Forgetting JSON.stringify: passing objects instead of strings
  • Missing negate property: always include "negate": false or "negate": true
Container Tags vs Metadata Filtering:
  • Container tags: Exact array matching for organizational grouping
  • Metadata filters: SQL-like queries on custom metadata fields with complex logic
  • Both can be combined for powerful filtering capabilities