Open-source proxy stops agent loops, caps budget, and blocks risky tool calls
Electrical-War-549 · reddit · 2026-07-28
The author built a local open-source proxy for agents that prevents runaway costs and unsafe actions.
It sits in front of an agent and can:
- enforce a hard budget cap and stop mid-stream,
- detect repeated identical prompts and break loops before another API call is made,
- block forbidden tool calls such as delete before they reach application code.
The post asks whether budget blowups are a common pain point for other builders, and how they defend against them.
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