> ## 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 • Rust AI Agent SDK > Knowledge: Main knowledge manager. # Knowledge > Defined in the [**knowledge**](../modules/knowledge) module. Rust AI Agent SDK Main knowledge manager. ## Fields | Name | Type | Description | | ----------- | --------------------- | ---------------- | | `config` | `KnowledgeConfig` | Configuration | | `documents` | `Vec<Document>` | Documents | | `chunking` | `Chunking` | Chunking utility | ## Methods ### `new` ```rust theme={"theme":{"light":"vitesse-light","dark":"vitesse-dark"}} fn new() -> KnowledgeBuilder ``` Create a new knowledge builder ### `add` ```rust theme={"theme":{"light":"vitesse-light","dark":"vitesse-dark"}} fn add(&mut self, content: &str, metadata: Option>) -> Result ``` Add content to knowledge base **Parameters:** | Name | Type | | ---------- | ----------------------------- | | `content` | `&str` | | `metadata` | `Option<HashMap<String` | ### `add_document` ```rust theme={"theme":{"light":"vitesse-light","dark":"vitesse-dark"}} fn add_document(&mut self, document: Document) -> Result ``` Add a document **Parameters:** | Name | Type | | ---------- | ---------- | | `document` | `Document` | ### `search` ```rust theme={"theme":{"light":"vitesse-light","dark":"vitesse-dark"}} fn search(&self, query: &str, limit: usize) -> Result ``` Search knowledge base (placeholder - would use embeddings in real impl) **Parameters:** | Name | Type | | ------- | ------- | | `query` | `&str` | | `limit` | `usize` | ### `get` ```rust theme={"theme":{"light":"vitesse-light","dark":"vitesse-dark"}} fn get(&self, id: &str) -> Option<&Document> ``` Get document by ID **Parameters:** | Name | Type | | ---- | ------ | | `id` | `&str` | ### `delete` ```rust theme={"theme":{"light":"vitesse-light","dark":"vitesse-dark"}} fn delete(&mut self, id: &str) -> bool ``` Delete document by ID **Parameters:** | Name | Type | | ---- | ------ | | `id` | `&str` | ### `clear` ```rust theme={"theme":{"light":"vitesse-light","dark":"vitesse-dark"}} fn clear(&mut self) -> () ``` Clear all documents ### `len` ```rust theme={"theme":{"light":"vitesse-light","dark":"vitesse-dark"}} fn len(&self) -> usize ``` Get document count ### `is_empty` ```rust theme={"theme":{"light":"vitesse-light","dark":"vitesse-dark"}} fn is_empty(&self) -> bool ``` Check if empty ### `chunk` ```rust theme={"theme":{"light":"vitesse-light","dark":"vitesse-dark"}} fn chunk(&self, text: &str) -> Vec ``` Chunk text using configured strategy **Parameters:** | Name | Type | | ------ | ------ | | `text` | `&str` | ## Source `praisonai/src/knowledge/mod.rs` at line 756 *** ## Related Documentation