> ## 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. # Specialized Agents • Rust AI Agent SDK > Specialized agents for PraisonAI # specialized\_agents Rust AI Agent SDK Specialized agents for PraisonAI This module provides specialized agent types matching the Python SDK: * `PromptExpanderAgent`: Expands short prompts into detailed, comprehensive prompts * `QueryRewriterAgent`: Transforms queries to improve retrieval quality in RAG # Example ```rust,ignore theme={"theme":{"light":"vitesse-light","dark":"vitesse-dark"}} use praisonai::specialized_agents::{PromptExpanderAgent, ExpandStrategy}; let expander = PromptExpanderAgent::new() .model("gpt-4o-mini") .build(); let result = expander.expand("Write a blog post", ExpandStrategy::Detailed, None).await?; println!("Expanded: {}", result.expanded_prompt); ``` ## Import ```rust theme={"theme":{"light":"vitesse-light","dark":"vitesse-dark"}} use praisonai::specialized_agents::*; ``` ## Classes Result of prompt expansion Prompt expansion prompts for each strategy Configuration for PromptExpanderAgent Builder for PromptExpanderAgent Agent for expanding prompts Result of query rewriting Query rewriting prompts for each strategy Configuration for QueryRewriterAgent Builder for QueryRewriterAgent Agent for rewriting queries Expansion strategy for prompts Rewriting strategy for queries *** ## Related Documentation