> ## Documentation Index
> Fetch the complete documentation index at: https://docs.agno.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Custom Memory Manager

> Configure MemoryManager with custom memory-capture instructions.

Pass `additional_instructions` to append rules to the default memory-manager prompt. Pass `system_message` to replace the prompt.

## Code

```python custom_memory_manager.py theme={null}
from agno.agent import Agent
from agno.db.postgres import PostgresDb
from agno.memory import MemoryManager
from agno.models.openai import OpenAIResponses
from rich.pretty import pprint

db_url = "postgresql+psycopg://ai:ai@localhost:5532/ai"

db = PostgresDb(db_url=db_url)

memory_manager = MemoryManager(
    model=OpenAIResponses(id="gpt-5.2"),
    additional_instructions="""
    IMPORTANT: Don't store any memories about the user's name. Just say "The User" instead of referencing the user's name.
    """,
    db=db,
)

john_doe_id = "john_doe@example.com"

agent = Agent(
    model=OpenAIResponses(id="gpt-5.2"),
    db=db,
    memory_manager=memory_manager,
    update_memory_on_run=True,
    user_id=john_doe_id,
)

agent.print_response(
    "My name is John Doe and I like to swim and play soccer.", stream=True
)

agent.print_response("I don't like to swim", stream=True)


memories = agent.get_user_memories(user_id=john_doe_id)

print("John Doe's memories:")
pprint(memories)
```

## Usage

<Steps>
  <Snippet file="create-venv-step.mdx" />

  <Step title="Set your API key">
    ```bash theme={null}
    export OPENAI_API_KEY=xxx
    ```
  </Step>

  <Step title="Install dependencies">
    ```bash theme={null}
    uv pip install -U agno openai sqlalchemy 'psycopg[binary]'
    ```
  </Step>

  <Step title="Run example">
    ```bash theme={null}
    python custom_memory_manager.py
    ```
  </Step>
</Steps>