> ## Documentation Index
> Fetch the complete documentation index at: https://praison.ai/docs/llms.txt
> Use this file to discover all available pages before exploring further.
# Knowledge Store Protocol • Rust AI Agent SDK
> KnowledgeStoreProtocol: Protocol for knowledge store backends.
# KnowledgeStoreProtocol
> Defined in the [**knowledge**](../modules/knowledge) module.
Rust AI Agent SDK
Protocol for knowledge store backends.
## Methods
### `search`
```rust theme={"theme":{"light":"vitesse-light","dark":"vitesse-dark"}}
async fn search(
&self,
query: &str,
user_id: Option<&str>,
agent_id: Option<&str>,
limit: usize,
) -> Result
```
Search for relevant content
**Parameters:**
| Name | Type |
| ---------- | -------------------- |
| `query` | `&str` |
| `user_id` | `Option<&str>` |
| `agent_id` | `Option<&str>` |
| `limit` | `usize` |
### `add`
```rust theme={"theme":{"light":"vitesse-light","dark":"vitesse-dark"}}
async fn add(
&mut self,
content: &str,
user_id: Option<&str>,
agent_id: Option<&str>,
metadata: Option>,
) -> Result
```
Add content to the store
**Parameters:**
| Name | Type |
| ---------- | ----------------------------- |
| `content` | `&str` |
| `user_id` | `Option<&str>` |
| `agent_id` | `Option<&str>` |
| `metadata` | `Option<HashMap<String` |
### `get`
```rust theme={"theme":{"light":"vitesse-light","dark":"vitesse-dark"}}
async fn get(&self, item_id: &str) -> Result>
```
Get item by ID
**Parameters:**
| Name | Type |
| --------- | ------ |
| `item_id` | `&str` |
### `get_all`
```rust theme={"theme":{"light":"vitesse-light","dark":"vitesse-dark"}}
async fn get_all(
&self,
user_id: Option<&str>,
agent_id: Option<&str>,
limit: usize,
) -> Result
```
Get all items
**Parameters:**
| Name | Type |
| ---------- | -------------------- |
| `user_id` | `Option<&str>` |
| `agent_id` | `Option<&str>` |
| `limit` | `usize` |
### `update`
```rust theme={"theme":{"light":"vitesse-light","dark":"vitesse-dark"}}
async fn update(&mut self, item_id: &str, content: &str) -> Result
```
Update an item
**Parameters:**
| Name | Type |
| --------- | ------ |
| `item_id` | `&str` |
| `content` | `&str` |
### `delete`
```rust theme={"theme":{"light":"vitesse-light","dark":"vitesse-dark"}}
async fn delete(&mut self, item_id: &str) -> Result
```
Delete an item
**Parameters:**
| Name | Type |
| --------- | ------ |
| `item_id` | `&str` |
### `delete_all`
```rust theme={"theme":{"light":"vitesse-light","dark":"vitesse-dark"}}
async fn delete_all(&mut self, user_id: Option<&str>, agent_id: Option<&str>) -> Result
```
Delete all items
**Parameters:**
| Name | Type |
| ---------- | -------------------- |
| `user_id` | `Option<&str>` |
| `agent_id` | `Option<&str>` |
## Source
`praisonai/src/knowledge/mod.rs` at line 0
***
## Related Documentation