> ## 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.
# Code Execution
> Let agents write and run code
Enable agents to write and execute code to solve problems.
```mermaid theme={"theme":{"light":"vitesse-light","dark":"vitesse-dark"}}
graph LR
subgraph "Code Execution"
P[📋 Problem] --> A[🤖 Agent]
A --> C[💻 Code]
C --> R[▶️ Run]
R --> O[📤 Result]
end
classDef input fill:#6366F1,stroke:#7C90A0,color:#fff
classDef code fill:#F59E0B,stroke:#7C90A0,color:#fff
classDef output fill:#10B981,stroke:#7C90A0,color:#fff
class P input
class A,C,R code
class O output
```
## Quick Start
```rust theme={"theme":{"light":"vitesse-light","dark":"vitesse-dark"}}
use praisonai::{Agent, tool};
// Define a code execution tool
#[tool(description = "Execute Python code and return the result")]
async fn run_python(code: String) -> String {
// Execute code in sandbox
execute_python_sandboxed(&code).await
}
// Create agent with code execution tool
let agent = Agent::new()
.name("Coder")
.instructions("Write and execute code to solve problems. Use the run_python tool.")
.tool(run_python)
.build()?;
let response = agent.chat("Calculate the first 10 Fibonacci numbers").await?;
// Agent writes Python code and executes it via the tool
```
```rust theme={"theme":{"light":"vitesse-light","dark":"vitesse-dark"}}
use praisonai::tool;
#[tool(description = "Execute JavaScript code safely")]
async fn run_js(code: String) -> String {
// Use sandboxed environment with timeout
sandbox::execute_with_timeout(
&code,
std::time::Duration::from_secs(10)
).await
}
```
***
## Supported Languages
| Language | Runtime |
| ---------- | -------- |
| Python | Built-in |
| JavaScript | Node.js |
| Rust | Cargo |
***
## Security
> \[!CAUTION]
> Code execution allows running arbitrary code. Use in trusted environments only.
| Safety Feature | Description |
| --------------- | ------------------------------ |
| Sandbox | Isolated execution environment |
| Timeout | Max execution time |
| Resource limits | Memory and CPU caps |
***
## Related
Custom tools
Safety validation