Strands Agents

A Rust implementation of the Strands Agents SDK for building AI agents with model-driven orchestration.

Features

• Model-Driven Orchestration — Agents use LLM reasoning to plan, execute tools, and iterate
• Multi-Provider Support — AWS Bedrock, OpenAI, Anthropic, Ollama, and more
• Type-Safe Tools — Define tools with the #[tool] macro
• Multi-Agent Patterns — Graph and Swarm orchestration
• Async-First — Built on Tokio with streaming support
• OpenTelemetry Integration — Built-in tracing and metrics

Installation

[dependencies]
strands-agents = "0.1"
tokio = { version = "1", features = ["full"] }

Quick Start

use strands_agents::prelude::*;
use strands_agents::models::BedrockModel;

#[tokio::main]
async fn main() -> Result<(), Box<dyn std::error::Error>> {
    let mut agent = Agent::builder()
        .model(BedrockModel::new("anthropic.claude-3-sonnet-20240229-v1:0").await?)
        .system_prompt("You are a helpful assistant")
        .build()?;

    let result = agent.invoke_async("Hello!").await?;
    println!("{}", result);
    Ok(())
}

Tools

use strands_agents::{tool, Agent};
use strands_agents::models::BedrockModel;

#[tool]
/// Get current weather for a location.
async fn get_weather(location: String) -> String {
    format!("Weather in {location}: 72°F, Sunny")
}

#[tokio::main]
async fn main() -> Result<(), Box<dyn std::error::Error>> {
    let mut agent = Agent::builder()
        .model(BedrockModel::default().await?)
        .tool(GetWeatherTool::new())?
        .build()?;

    let result = agent.invoke_async("What's the weather in Seattle?").await?;
    println!("{}", result);
    Ok(())
}

Cargo Features

Modules

Testing

cargo test

License

Licensed under the MIT License.

Credits

Rust port of Strands Agents SDK by AWS.