Launched an open source preflight billing guard for AI agents 3 days ago. 560 downloads and counting. [apparently I'm not the only one who got burned.]

Reddit r/artificial / 5/7/2026

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Key Points

The author reports that monthly budget caps often fail for AI agents because a misconfigured loop can burn through the budget within hours.
They argue that the more effective control is a per-request ceiling that blocks requests before any compute is performed.
The post announces an open-source “preflight billing guard” intended to enforce this before compute starts.
Early adoption is indicated by “560 downloads and counting,” with interest in what other teams are using for agent spend control.

The pattern I kept seeing: monthly caps are useless for agents. One misconfigured loop can exhaust a monthly budget in hours. A per-request ceiling that blocks BEFORE compute starts is the actual fix.

Comment "Repo" to get a free access.

Curious what others are using for agent spend control.

submitted by /u/EveningMindless3357
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