Unverified50% confidenceFactExact time

Claude Code's Harness layer supports placing slow commands into a background thread for execution by adding the run_in_background=true parameter to the bash tool, and the main loop immediately returns a placeholder tool result in the format 'background task bg0001 has started'.

1

Sources

50%

Confidence

Medium-term (~90 days)

Relevance

10/15/2026

First Seen

Valid until: 1/13/2027

Sources

Claude Code Background Task Mechanism: How Slow Commands Avoid Blocking the Agent

Related Entities

Claude Codeproduct Harnessconcept run_in_backgroundconcept

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