Coordinate background agents using system progress reminders while continuing other work. Read their output files after completion signals, avoiding repeated status checks and full transcripts that consume tokens and crowd the main conversation.
Background Agent Pings
Review the instructions the agent will receive before you install.
Trust system reminders as agent progress notifications. Don't poll.
When you launch a background agent, continue working on other tasks. The system will notify you via reminders when:
Agent <id> progress: X new tools used, Y new tokens1. Task(run_in_background=true, prompt="... Output to: .claude/cache/agents/<type>/output.md")
2. Continue with next task immediately
3. When system reminder shows agent activity, check if output file exists
4. Read output file only when agent signals completion
# BAD: Polling wastes tokens and time
Task(run_in_background=true)
Bash("sleep 5 && ls ...") # polling
Bash("tail /tmp/claude/.../tasks/<id>.output") # polling
TaskOutput(task_id="...") # floods context
TaskOutput floods main context with full agent transcriptNo reviews yet. Tell others what you thought.
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