> For the complete documentation index, see [llms.txt](https://tinyhumans.gitbook.io/openhuman/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://tinyhumans.gitbook.io/openhuman/features/native-tools/memory-tools.md).

# Memory Tools

The [Memory Tree](/openhuman/features/obsidian-wiki/memory-tree.md) is OpenHuman's knowledge base. The memory tools are how the agent talks to it during a conversation.

## Tools in the family

| Tool     | What it does                                                                                              |
| -------- | --------------------------------------------------------------------------------------------------------- |
| `recall` | Search the Memory Tree by query - source-scoped, topic-scoped, or global. Returns chunks with provenance. |
| `store`  | Write a new memory the agent decided is worth keeping (a fact, a preference, a piece of context).         |
| `forget` | Remove a memory by ID - used when something is wrong, stale, or the user explicitly asks to forget it.    |

There is also a tree-aware retrieval surface (drill down a topic, fetch the global digest for a day) - the agent picks the right one based on the question.

## Why these are tools, not implicit context

The Memory Tree is too big to dump into every conversation. The tools let the model *ask* - "what do I know about Alice?", "what happened yesterday?", "remind me of last week's Stripe webhook" - and the retrieval layer returns just the relevant chunks, with provenance back to the source file in your Obsidian vault.

## See also

* [Memory Tree](/openhuman/features/obsidian-wiki/memory-tree.md) - what these tools read from and write to.
* [Auto-fetch](/openhuman/features/obsidian-wiki/auto-fetch.md) - how the tree gets populated in the first place.