Critical impact
Claude Code regularly sends each background agent’s transcript to its model
What happened
Claude Code periodically (about every 30 seconds) sends the full transcript of each background agent to its model, which consumes a noticeable portion of tokens. A Bun preload script (no-agent-summary.js) can stop this timer without modifying the Claude Code binary.
Why it matters
Stopping the automatic transcript resend can reduce token usage, saving costs and improving efficiency.
Is this a big deal?
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