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A single scheduling flaw can double your API bill — here is how to choose between loops, skills, subagents, and workflows without burning budget.
A hidden bug in Claude Code’s scheduling layer is quietly re-firing single-run commands every time a background task wakes up. If that command performs a database write, opens a pull request, or triggers an expensive agentic search, it won’t just duplicate your work — it will bill you twice. Most guides treat /loop
, /goal
, and /schedule
as separate tricks, while filing skills versus subagents away as a completely unrelated architectural choice. They miss the core connection: a single design gap in ScheduleWakeup
links all of them together.
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Before you automate any prompt, you must answer one non-negotiable question: is this prompt idempotent to re-fire? In other words, if the scheduler re-executes your prompt halfway through the run, will the final state remain safe, clean, and financially sane?
In this article you’ll learn