LoopBudget adds spend controls for Cursor and Claude Code AI coding sessions

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A new tool called LoopBudget has launched in invite-only early access to help developers monitor and control costs during AI-assisted coding sessions in Cursor and Claude Code. The platform introduces two policy modes: a soft warn that alerts users when a spending threshold is crossed while allowing the session to continue, and a hard stop that flags the breach, notifies the team, and marks the session as stopped. The developer behind the tool acknowledges that the hard stop does not yet forcibly terminate the underlying agent, as neither Cursor nor Claude Code currently exposes a reliable kill primitive to third parties. LoopBudget connects via a sidecar for Cursor and a stop-hook for Claude Code, feeding session data into a shared policy engine and dashboard. The stated design goal is to eventually gate the next tool call after a hard cap is reached, rather than interrupting an active edit mid-execution.

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