Never Use TaskOutput

TaskOutput floods the main context window with agent transcripts (70k+ tokens).

Rule

NEVER use TaskOutput tool. Use Task tool with synchronous mode instead.

Why

• TaskOutput reads full agent transcript into context
• This causes mid-conversation compaction
• Defeats the purpose of agent context isolation

Pattern

# WRONG - floods context
Task(run_in_background=true)
TaskOutput(task_id="...")  // 70k tokens dumped

# RIGHT - isolated context, returns summary
Task(run_in_background=false)  // Agent runs, returns summary

Source

• Session where TaskOutput caused context overflow