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Update Docs (#3520)

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Deshraj Yadav
2025-09-30 08:41:36 -07:00
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docs/open-source/features/custom-update-memory-prompt.mdx
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Update memory prompt is a prompt used to determine the action to be performed on the memory.
By customizing this prompt, you can control how the memory is updated.
The update memory prompt is used to determine the action to be performed on the memory. By customizing this prompt, you can control how the memory is updated.
## Introduction
The Mem0 memory system compares newly retrieved facts with existing memory and determines the action to be performed. The types of actions are:
- **Add**: Add the newly retrieved facts to the memory.
- **Update**: Update the existing memory with the newly retrieved facts.
- **Delete**: Delete the existing memory.
- **No Change**: Do not make any changes to the memory.
## Introduction
Mem0 memory system compares the newly retrieved facts with the existing memory and determines the action to be performed on the memory.
The kinds of actions are:
- Add
- Add the newly retrieved facts to the memory.
- Update
- Update the existing memory with the newly retrieved facts.
- Delete
- Delete the existing memory.
- No Change
- Do not make any changes to the memory.
### Example
Example of a custom update memory prompt:
<CodeGroup>
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```
</CodeGroup>
## Output format
## Output Format
The prompt needs to guide the output to follow the structure as shown below:
<CodeGroup>
```json Add
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</CodeGroup>
## custom update memory prompt vs custom prompt
## Custom Update Memory Prompt vs Custom Prompt
| Feature | `custom_update_memory_prompt` | `custom_prompt` |
|---------|-------------------------------|-----------------|
| Use case | Determine the action to be performed on the memory | Extract the facts from messages |
| Use case | Determine the action to be performed on the memory | Extract facts from messages |
| Reference | Retrieved facts from messages and old memory | Messages |
| Output | Action to be performed on the memory | Extracted facts |