> ## Documentation Index
> Fetch the complete documentation index at: https://docs.dartantic.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# Anthropic Code Interpreter

> Execute Python code in Anthropic's sandbox environment.

Anthropic's code interpreter runs Python in a sandboxed environment. State
persists across turns, and generated files are automatically downloaded.

## Enable Code Interpreter

```dart theme={null}
final agent = Agent(
  'anthropic',
  chatModelOptions: const AnthropicChatOptions(
    serverSideTools: {AnthropicServerSideTool.codeInterpreter},
  ),
);
```

## Multi-Turn Execution

State persists across conversation turns:

```dart theme={null}
final history = <ChatMessage>[];

// Step 1: Calculate data
await for (final chunk in agent.sendStream(
  'Calculate the first 10 Fibonacci numbers and store them in a variable '
  'called "fib_sequence". Create a CSV file called "fibonacci.csv".',
)) {
  stdout.write(chunk.output);
  history.addAll(chunk.messages);
}

// Step 2: Use the data from step 1
await for (final chunk in agent.sendStream(
  'Using fib_sequence, create a plot showing the golden ratio convergence. '
  'Save it as "golden_ratio.png".',
  history: history,
)) {
  stdout.write(chunk.output);
  history.addAll(chunk.messages);
}
```

## Generated Files

Files created during code execution are attached as `DataPart` instances:

```dart theme={null}
for (final msg in history) {
  for (final part in msg.parts) {
    if (part is DataPart) {
      print('Generated: ${part.name} (${part.mimeType})');
      File('output/${part.name}').writeAsBytesSync(part.bytes);
    }
  }
}
```

Anthropic's code interpreter supports common Python libraries including
matplotlib for plotting, pandas for data manipulation, and reportlab for PDF
generation.

## Streaming Code Events

Code execution events stream through `metadata['code_interpreter']`:

```dart theme={null}
await for (final chunk in agent.sendStream(prompt)) {
  final events = chunk.metadata['code_interpreter'] as List?;
  if (events != null) {
    for (final event in events) {
      if (event['type'] == 'code_delta') {
        stdout.write(event['delta']);
      }
    }
  }
}
```

## Example

* [Anthropic Code Interpreter
  demo](https://github.com/csells/dartantic_ai/blob/main/packages/dartantic_ai/example/bin/server_side_tools_anthropic/server_side_code_interpreter.dart)

## Related Topics

* [Server-Side Tools](/server-side-tools)
* [Media Generation](/media-generation)
* [Anthropic Web Search](/server-side-tools/anthropic-web-search)