Code Execution Tool

The Code Execution tool runs Python in an Anthropic-hosted sandbox as part of a model response. Use it when you need the model to actually compute, not just describe.

When to Use

• Data analysis and transformation (CSV, JSON, parquet)
• Chart and plot generation (matplotlib, plotly)
• Math verification — let the model check its own work
• Running unit tests the model just wrote
• Any task where "the answer is whatever the code prints"

Enabling