Optimize Long-Running Computations with Tool Time-Limit Awareness
Enable Claude to budget logic for long-running code cells.
Upgrade to the latest code execution tool version to allow Claude to self-correct and optimize scripts for defined 90-second execution limits.
The Scenario
You are using Claude's server-side code execution to process a large CSV file or perform a compute-heavy mathematical simulation.
Before & after
You might run an LLM-generated script that times out or hangs indefinitely because the model doesn't realize the environment's limitations, leading to repeated failures. Troubleshooting this manually can take 15–20 minutes.
By using the `code_execution_20260521` tool version, Claude automatically budgets its logic to fit within the 90-second cell limit. This takes 1–2 minutes to configure and run.
The updated code execution tool now explicitly includes the 90-second per-cell execution time limit in its system description. This allows the AI to 'budget' its code logic—for example, by optimizing a loop or breaking a task into smaller chunks—before it starts writing.
Source
Claude Platform - Claude API Docs"discloses the 90-second per-cell execution time limit in the tool description so Claude can budget long-running cells."