---
title: memory - Memory & Knowledge
description: Search and read long-term memory and knowledge base files
---

The memory tool contains two sub-tools: `memory_search` (search memory) and `memory_get` (read memory or knowledge files).

When the [knowledge base](/en/knowledge) feature is enabled, both tools also support accessing files under the `knowledge/` directory.

## Dependencies

No extra dependencies, available by default. Managed by the Agent Core memory system.

## memory_search

Search historical memory and knowledge base content with hybrid keyword and vector retrieval.

| Parameter | Type | Required | Description |
| --- | --- | --- | --- |
| `query` | string | Yes | Search query |

## memory_get

Read the content of a specific memory or knowledge file.

| Parameter | Type | Required | Description |
| --- | --- | --- | --- |
| `path` | string | Yes | Relative path to the file (e.g. `MEMORY.md`, `memory/2026-01-01.md`, `knowledge/concepts/rag.md`) |
| `start_line` | integer | No | Start line number |
| `end_line` | integer | No | End line number |

## How It Works

The Agent automatically invokes memory tools in these scenarios:

- When the user shares important information → stores to memory
- When historical context is needed → searches relevant memory
- When conversation reaches a certain length → extracts summary for storage
- When discussing domain knowledge → retrieves relevant pages from the knowledge base

<Note>
  When `knowledge` is set to `false` in config, the tool descriptions and search scope automatically adjust to include only memory files.
</Note>
