---
title: "Update & Delete Memories"
description: "Safely update and delete memories with upsert patterns and idempotency"
icon: "delete"
---

Choose from direct updates, idempotent upserts, single deletions, and powerful bulk operations.

## Direct Updates

Update existing memories by their ID when you know the specific memory you want to modify. Changes trigger reprocessing through the full pipeline.

<CodeGroup>

```typescript Typescript
import Supermemory from 'supermemory';

const client = new Supermemory({
  apiKey: process.env.SUPERMEMORY_API_KEY!
});

// Update by memory ID
const updated = await client.memories.update('memory_id_123', {
  content: 'Updated content here',
  metadata: { version: 2, updated: true }
});

console.log(updated.status); // "queued" for reprocessing
console.log(updated.id); // "memory_id_123"
```

```python Python
from supermemory import Supermemory
import os

client = Supermemory(api_key=os.environ.get("SUPERMEMORY_API_KEY"))

# Update by memory ID
updated = client.memories.update(
    'memory_id_123',
    content='Updated content here',
    metadata={'version': 2, 'updated': True}
)

print(f"Status: {updated.status}")  # "queued" for reprocessing
print(f"ID: {updated.id}")  # "memory_id_123"
```

```bash cURL
curl -X PATCH "https://api.supermemory.ai/v3/documents/memory_id_123" \
  -H "Authorization: Bearer $SUPERMEMORY_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "content": "Updated content here",
    "metadata": {"version": 2, "updated": true}
  }'
```

</CodeGroup>

## Upserts Using customId

Use `customId` for idempotent operations where the same `customId` with `add()` will update existing memory instead of creating duplicates.

<CodeGroup>

```typescript Typescript
import Supermemory from 'supermemory';

const client = new Supermemory({
  apiKey: process.env.SUPERMEMORY_API_KEY!
});

const customId = 'user-note-001';

// First call creates memory
const created = await client.memories.add({
  content: 'Initial content',
  customId: customId,
  metadata: { version: 1 }
});

console.log('Created memory:', created.id);

// Second call with same customId updates existing
const updated = await client.memories.add({
  content: 'Updated content',
  customId: customId,         // Same customId = upsert
  metadata: { version: 2 }
});
```

```python Python
from supermemory import Supermemory
import os

client = Supermemory(api_key=os.environ.get("SUPERMEMORY_API_KEY"))

custom_id = 'user-note-001'

# First call creates memory
created = client.memories.add(
    content='Initial content',
    custom_id=custom_id,
    metadata={'version': 1}
)

print(f'Created memory: {created.id}')

# Second call with same customId updates existing
updated = client.memories.add(
    content='Updated content',
    custom_id=custom_id,     # Same customId = upsert
    metadata={'version': 2}
)

print(f'Updated memory: {updated.id}')
print(f'Same memory? {created.id == updated.id}')  # True
```

```bash cURL
# First call - creates memory
curl -X POST "https://api.supermemory.ai/v3/documents" \
  -H "Authorization: Bearer $SUPERMEMORY_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "content": "Initial content",
    "customId": "user-note-001",
    "metadata": {"version": 1}
  }'

# Response: {"id": "mem_abc123", "status": "queued", "customId": "user-note-001"}

# Second call - updates existing (same customId)
curl -X POST "https://api.supermemory.ai/v3/documents" \
  -H "Authorization: Bearer $SUPERMEMORY_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "content": "Updated content",
    "customId": "user-note-001",
    "metadata": {"version": 2}
  }'

# Response: {"id": "mem_abc123", "status": "queued", "customId": "user-note-001"}
# Note: Same ID returned - memory was updated, not created
```

</CodeGroup>

<Note>
The `customId` enables idempotency across all endpoints. The `memoryId` doesn't support idempotency, only the `customId` does.
</Note>

<Warning> 

The `customId` can have a maximum length of 100 characters.

</Warning>

## Single Delete

Delete individual memories by their ID. This is a permanent hard delete with no recovery mechanism.

<CodeGroup>

```typescript Typescript
// Hard delete - permanently removes memory
await client.memories.delete('memory_id_123');
console.log('Memory deleted successfully');
```

```python Python
# Hard delete - permanently removes memory
client.memories.delete('memory_id_123')
print('Memory deleted successfully')

# Error handling for single delete
try:
    client.memories.delete('memory_id_123')
    print('Delete successful')
except NotFoundError:
    print('Memory not found or already deleted')
except AuthenticationError:
    print('Authentication failed')
except Exception as e:
    print(f'Delete failed: {e}')
```

```bash cURL
curl -X DELETE "https://api.supermemory.ai/v3/documents/memory_id_123" \
  -H "Authorization: Bearer $SUPERMEMORY_API_KEY"

# Response: 204 No Content (success)
# Response: 404 Not Found (memory doesn't exist)
```

</CodeGroup>

## Bulk Delete by IDs

Delete multiple memories at once by providing an array of memory IDs. Maximum of 100 IDs per request.

<CodeGroup>

```typescript Typescript
// Bulk delete by memory IDs
const result = await client.memories.bulkDelete({
  ids: [
    'memory_id_1',
    'memory_id_2',
    'memory_id_3',
    'non_existent_id'  // This will be reported in errors
  ]
});

console.log('Bulk delete result:', result);
// Output: {
//   success: true,
//   deletedCount: 3,
//   errors: [
//     { id: "non_existent_id", error: "Memory not found" }
//   ]
// }
```

```python Python
# Bulk delete by memory IDs
result = client.memories.bulk_delete(
    ids=[
        'memory_id_1',
        'memory_id_2',
        'memory_id_3',
        'non_existent_id'  # This will be reported in errors
    ]
)

print(f'Bulk delete result: {result}')
# Output: {
#   'success': True,
#   'deletedCount': 3,
#   'errors': [
#     {'id': 'non_existent_id', 'error': 'Memory not found'}
#   ]
# }
```

```bash cURL
curl -X DELETE "https://api.supermemory.ai/v3/documents/bulk" \
  -H "Authorization: Bearer $SUPERMEMORY_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "ids": [
      "memory_id_1",
      "memory_id_2",
      "memory_id_3",
      "non_existent_id"
    ]
  }'

# Response: {
#   "success": true,
#   "deletedCount": 3,
#   "errors": [
#     {"id": "non_existent_id", "error": "Memory not found"}
#   ]
# }
```

</CodeGroup>

## Bulk Delete by Container Tags

Delete all memories within specific container tags. This is useful for cleaning up entire projects or user data.

<CodeGroup>

```typescript Typescript
// Delete all memories in specific container tags
const result = await client.memories.bulkDelete({
  containerTags: ['user-123', 'project-old', 'archived-content']
});

console.log('Bulk delete by tags result:', result);
// Output: {
//   success: true,
//   deletedCount: 45,
//   containerTags: ["user-123", "project-old", "archived-content"]
// }
```

```python Python
# Delete all memories in specific container tags
result = client.memories.bulk_delete(
    container_tags=['user-123', 'project-old', 'archived-content']
)

print(f'Bulk delete by tags result: {result}')
# Output: {
#   'success': True,
#   'deletedCount': 45,
#   'containerTags': ['user-123', 'project-old', 'archived-content']
# }
```

```bash cURL
curl -X DELETE "https://api.supermemory.ai/v3/documents/bulk" \
  -H "Authorization: Bearer $SUPERMEMORY_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "containerTags": ["user-123", "project-old", "archived-content"]
  }'

# Response: {
#   "success": true,
#   "deletedCount": 45,
#   "containerTags": ["user-123", "project-old", "archived-content"]
# }
```

</CodeGroup>

## Advanced Patterns

### Soft Delete Implementation

For applications requiring audit trails or recovery mechanisms, implement soft delete patterns using metadata:

<CodeGroup>

```typescript Typescript
// Soft delete pattern using metadata
await client.memories.update('memory_id', {
  metadata: {
    deleted: true,
    deletedAt: new Date().toISOString(),
    deletedBy: 'user_123'
  }
});

// Filter out deleted memories in searches
const activeMemories = await client.memories.list({
  filters: JSON.stringify({
    AND: [
      { key: "deleted", value: "true", negate: true }
    ]
  })
});

console.log('Active memories:', activeMemories.results.length);
```

```python Python
from datetime import datetime
import json

# Soft delete pattern using metadata
client.memories.update('memory_id', {
    'metadata': {
        'deleted': True,
        'deletedAt': datetime.now().isoformat(),
        'deletedBy': 'user_123'
    }
})

# Filter out deleted memories
active_memories = client.memories.list(
    filters=json.dumps({
        "AND": [
            {"key": "deleted", "value": "true", "negate": True}
        ]
    })
)

print(f'Active memories: {len(active_memories.results)}')
```

```bash cURL
# Soft delete using metadata
curl -X PATCH "https://api.supermemory.ai/v3/documents/memory_id" \
  -H "Authorization: Bearer $SUPERMEMORY_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "metadata": {
      "deleted": true,
      "deletedAt": "2024-01-15T10:30:00Z",
      "deletedBy": "user_123"
    }
  }'

# Response: {"id": "memory_id", "status": "queued"}
```

</CodeGroup>

### Batch Processing for Large Operations

<CodeGroup>

```typescript Typescript
// Batch delete large numbers of memories safely
async function batchDeleteMemories(memoryIds: string[], batchSize = 100) {
  const results = [];

  for (let i = 0; i < memoryIds.length; i += batchSize) {
    const batch = memoryIds.slice(i, i + batchSize);

    console.log(`Processing batch ${Math.floor(i/batchSize) + 1} of ${Math.ceil(memoryIds.length/batchSize)}`);

    try {
      const result = await client.memories.bulkDelete({ ids: batch });
      results.push(result);

      // Brief delay between batches to avoid rate limiting
      if (i + batchSize < memoryIds.length) {
        await new Promise(resolve => setTimeout(resolve, 1000));
      }
    } catch (error) {
      console.error(`Batch ${Math.floor(i/batchSize) + 1} failed:`, error);
      results.push({ success: false, error: error.message, batch });
    }
  }

  // Aggregate results
  const totalDeleted = results
    .filter(r => r.success)
    .reduce((sum, r) => sum + (r.deletedCount || 0), 0);

  console.log(`Total deleted: ${totalDeleted} out of ${memoryIds.length}`);
  return { totalDeleted, results };
}
```

```python Python
import time
import math

def batch_delete_memories(memory_ids, batch_size=100):
    """Batch delete large numbers of memories safely"""
    results = []

    for i in range(0, len(memory_ids), batch_size):
        batch = memory_ids[i:i + batch_size]
        batch_num = i // batch_size + 1
        total_batches = math.ceil(len(memory_ids) / batch_size)

        print(f'Processing batch {batch_num} of {total_batches}')

        try:
            result = client.memories.bulk_delete(ids=batch)
            results.append(result)

            # Brief delay between batches to avoid rate limiting
            if i + batch_size < len(memory_ids):
                time.sleep(1)
        except Exception as error:
            print(f'Batch {batch_num} failed: {error}')
            results.append({'success': False, 'error': str(error), 'batch': batch})

    # Aggregate results
    total_deleted = sum(
        r.get('deletedCount', 0) for r in results if r.get('success')
    )

    print(f'Total deleted: {total_deleted} out of {len(memory_ids)}')
    return {'totalDeleted': total_deleted, 'results': results}
```

```bash cURL
# Batch processing script example
#!/bin/bash

MEMORY_IDS=("id1" "id2" "id3")  # Your memory IDs array
BATCH_SIZE=100
TOTAL_DELETED=0

# Process in batches
for ((i=0; i<${#MEMORY_IDS[@]}; i+=BATCH_SIZE)); do
    batch=("${MEMORY_IDS[@]:i:BATCH_SIZE}")
    batch_json=$(printf '%s\n' "${batch[@]}" | jq -R . | jq -s .)

    echo "Processing batch $((i/BATCH_SIZE + 1))"

    response=$(curl -s -X DELETE \
      "https://api.supermemory.ai/v3/documents/bulk" \
      -H "Authorization: Bearer $SUPERMEMORY_API_KEY" \
      -H "Content-Type: application/json" \
      -d "{\"ids\": $batch_json}")

    deleted_count=$(echo "$response" | jq -r '.deletedCount // 0')
    TOTAL_DELETED=$((TOTAL_DELETED + deleted_count))

    echo "Batch deleted: $deleted_count memories"
    sleep 1  # Rate limiting protection
done

echo "Total deleted: $TOTAL_DELETED memories"
```

</CodeGroup>

## Best Practices

### Update Operations

1. **Use customId for idempotent updates** - Prevents duplicate memories and enables safe retries
2. **Monitor processing status** - Updates trigger full reprocessing pipeline
3. **Handle metadata carefully** - Updates replace specified metadata keys
4. **Implement proper error handling** - Memory may be deleted between operations

### Delete Operations

1. **Hard delete is permanent** - No recovery mechanism exists
2. **Use bulk operations efficiently** - Maximum 100 IDs per bulk delete request
3. **Consider soft delete patterns** - Use metadata flags for recoverable deletion
4. **Batch large operations** - Avoid rate limits with proper batching
5. **Clean up application state** - Update your UI/cache after deletions